diff --git a/matpower/matpower-converter/src/main/java/com/powsybl/matpower/converter/MatpowerImporter.java b/matpower/matpower-converter/src/main/java/com/powsybl/matpower/converter/MatpowerImporter.java
index ab9da3340bf..31f5bbbd2a3 100644
--- a/matpower/matpower-converter/src/main/java/com/powsybl/matpower/converter/MatpowerImporter.java
+++ b/matpower/matpower-converter/src/main/java/com/powsybl/matpower/converter/MatpowerImporter.java
@@ -119,6 +119,9 @@ private static void createBuses(MatpowerModel model, ContainersMapping container
                 context.getSlackBuses().add(bus);
             }
 
+            // create voltage limits
+            createVoltageLimits(mBus, voltageLevel);
+
             // create load
             createLoad(mBus, voltageLevel);
 
@@ -130,6 +133,22 @@ private static void createBuses(MatpowerModel model, ContainersMapping container
         }
     }
 
+    private static void createVoltageLimits(MBus mBus, VoltageLevel voltageLevel) {
+        // as in IIDM, we only have one min and one max voltage level by voltage level we keep only the most severe ones
+        if (mBus.getMinimumVoltageMagnitude() != 0) {
+            double lowVoltageLimit = mBus.getMinimumVoltageMagnitude() * voltageLevel.getNominalV();
+            if (Double.isNaN(voltageLevel.getLowVoltageLimit()) || lowVoltageLimit > voltageLevel.getLowVoltageLimit()) {
+                voltageLevel.setLowVoltageLimit(lowVoltageLimit);
+            }
+        }
+        if (mBus.getMaximumVoltageMagnitude() != 0) {
+            double highVoltageLimit = mBus.getMaximumVoltageMagnitude() * voltageLevel.getNominalV();
+            if (Double.isNaN(voltageLevel.getHighVoltageLimit()) || highVoltageLimit < voltageLevel.getHighVoltageLimit()) {
+                voltageLevel.setHighVoltageLimit(highVoltageLimit);
+            }
+        }
+    }
+
     private static void createGenerators(MatpowerModel model, MBus mBus, VoltageLevel voltageLevel) {
         for (MGen mGen : model.getGeneratorsByBusNum(mBus.getNumber())) {
             String busId = getId(BUS_PREFIX, mGen.getNumber());
diff --git a/matpower/matpower-converter/src/test/resources/ieee118.xiidm b/matpower/matpower-converter/src/test/resources/ieee118.xiidm
index 0644f846bf5..d3296d33b9d 100644
--- a/matpower/matpower-converter/src/test/resources/ieee118.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee118.xiidm
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee118" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-105">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="0.955" angle="10.67"/>
             </iidm:busBreakerTopology>
@@ -12,7 +12,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-106">
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="0.971" angle="11.22"/>
             </iidm:busBreakerTopology>
@@ -20,7 +20,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-107">
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="0.968" angle="11.56"/>
             </iidm:busBreakerTopology>
@@ -28,7 +28,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-108">
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="0.998" angle="15.28"/>
             </iidm:busBreakerTopology>
@@ -39,7 +39,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-92">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="1.002" angle="15.73"/>
             </iidm:busBreakerTopology>
@@ -47,7 +47,7 @@
                 <iidm:shuntLinearModel bPerSection="-40.0" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.015" angle="20.77"/>
             </iidm:busBreakerTopology>
@@ -59,7 +59,7 @@
         <iidm:twoWindingsTransformer id="TWT-8-5" r="0.0" x="2.6700000000000004E-4" g="0.0" b="0.0" ratedU1="0.985" ratedU2="1.0" bus1="BUS-8" connectableBus1="BUS-8" voltageLevelId1="VL-8" bus2="BUS-5" connectableBus2="BUS-5" voltageLevelId2="VL-5"/>
     </iidm:substation>
     <iidm:substation id="SUB-109">
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="0.99" angle="13.0"/>
             </iidm:busBreakerTopology>
@@ -70,7 +70,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-90">
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="0.989" angle="12.56"/>
             </iidm:busBreakerTopology>
@@ -78,14 +78,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-94">
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="1.043" angle="28.02"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-29">
-        <iidm:voltageLevel id="VL-10" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-10" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-10" v="1.05" angle="35.61"/>
             </iidm:busBreakerTopology>
@@ -95,7 +95,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-27">
-        <iidm:voltageLevel id="VL-11" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-11" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-11" v="0.985" angle="12.72"/>
             </iidm:busBreakerTopology>
@@ -103,7 +103,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-26">
-        <iidm:voltageLevel id="VL-12" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-12" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-12" v="0.99" angle="12.2"/>
             </iidm:busBreakerTopology>
@@ -114,7 +114,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-25">
-        <iidm:voltageLevel id="VL-13" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-13" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-13" v="0.968" angle="11.35"/>
             </iidm:busBreakerTopology>
@@ -122,7 +122,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-24">
-        <iidm:voltageLevel id="VL-14" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-14" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-14" v="0.984" angle="11.5"/>
             </iidm:busBreakerTopology>
@@ -130,7 +130,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-23">
-        <iidm:voltageLevel id="VL-15" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-15" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-15" v="0.97" angle="11.23"/>
             </iidm:busBreakerTopology>
@@ -141,7 +141,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-22">
-        <iidm:voltageLevel id="VL-16" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-16" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-16" v="0.984" angle="11.91"/>
             </iidm:busBreakerTopology>
@@ -149,13 +149,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-17" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-17" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-17" v="0.995" angle="13.74"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-17" loadType="UNDEFINED" p0="11.0" q0="3.0" bus="BUS-17" connectableBus="BUS-17"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-30" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-30" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-30" v="0.968" angle="18.79"/>
             </iidm:busBreakerTopology>
@@ -163,7 +163,7 @@
         <iidm:twoWindingsTransformer id="TWT-30-17" r="0.0" x="3.88E-4" g="0.0" b="0.0" ratedU1="0.96" ratedU2="1.0" bus1="BUS-30" connectableBus1="BUS-30" voltageLevelId1="VL-30" bus2="BUS-17" connectableBus2="BUS-17" voltageLevelId2="VL-17"/>
     </iidm:substation>
     <iidm:substation id="SUB-21">
-        <iidm:voltageLevel id="VL-18" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-18" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-18" v="0.973" angle="11.53"/>
             </iidm:busBreakerTopology>
@@ -174,7 +174,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-20">
-        <iidm:voltageLevel id="VL-19" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-19" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-19" v="0.963" angle="11.05"/>
             </iidm:busBreakerTopology>
@@ -185,7 +185,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-57">
-        <iidm:voltageLevel id="VL-20" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-20" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-20" v="0.958" angle="11.93"/>
             </iidm:busBreakerTopology>
@@ -193,7 +193,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-56">
-        <iidm:voltageLevel id="VL-21" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-21" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-21" v="0.959" angle="13.52"/>
             </iidm:busBreakerTopology>
@@ -201,7 +201,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-55">
-        <iidm:voltageLevel id="VL-22" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-22" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-22" v="0.97" angle="16.08"/>
             </iidm:busBreakerTopology>
@@ -209,7 +209,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-53">
-        <iidm:voltageLevel id="VL-23" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-23" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-23" v="1.0" angle="21.0"/>
             </iidm:busBreakerTopology>
@@ -217,7 +217,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-51">
-        <iidm:voltageLevel id="VL-24" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-24" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-24" v="0.992" angle="20.89"/>
             </iidm:busBreakerTopology>
@@ -228,7 +228,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-48">
-        <iidm:voltageLevel id="VL-25" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-25" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-25" v="1.05" angle="27.93"/>
             </iidm:busBreakerTopology>
@@ -236,7 +236,7 @@
                 <iidm:minMaxReactiveLimits minQ="-47.0" maxQ="140.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-26" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-26" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-26" v="1.015" angle="29.71"/>
             </iidm:busBreakerTopology>
@@ -247,7 +247,7 @@
         <iidm:twoWindingsTransformer id="TWT-26-25" r="0.0" x="3.8199999999999996E-4" g="0.0" b="0.0" ratedU1="0.96" ratedU2="1.0" bus1="BUS-26" connectableBus1="BUS-26" voltageLevelId1="VL-26" bus2="BUS-25" connectableBus2="BUS-25" voltageLevelId2="VL-25"/>
     </iidm:substation>
     <iidm:substation id="SUB-47">
-        <iidm:voltageLevel id="VL-27" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-27" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-27" v="0.968" angle="15.35"/>
             </iidm:busBreakerTopology>
@@ -258,7 +258,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-46">
-        <iidm:voltageLevel id="VL-28" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-28" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-28" v="0.962" angle="13.62"/>
             </iidm:busBreakerTopology>
@@ -266,7 +266,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-45">
-        <iidm:voltageLevel id="VL-29" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-29" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-29" v="0.963" angle="12.63"/>
             </iidm:busBreakerTopology>
@@ -274,7 +274,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-31" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-31" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-31" v="0.967" angle="12.75"/>
             </iidm:busBreakerTopology>
@@ -285,7 +285,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-32" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-32" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-32" v="0.964" angle="14.8"/>
             </iidm:busBreakerTopology>
@@ -296,7 +296,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-33" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-33" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-33" v="0.972" angle="10.63"/>
             </iidm:busBreakerTopology>
@@ -304,7 +304,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-34" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-34" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-34" v="0.986" angle="11.3"/>
             </iidm:busBreakerTopology>
@@ -318,7 +318,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-35" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-35" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-35" v="0.981" angle="10.87"/>
             </iidm:busBreakerTopology>
@@ -326,7 +326,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-36" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-36" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-36" v="0.98" angle="10.87"/>
             </iidm:busBreakerTopology>
@@ -337,7 +337,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-37" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-37" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-37" v="0.992" angle="11.77"/>
             </iidm:busBreakerTopology>
@@ -345,7 +345,7 @@
                 <iidm:shuntLinearModel bPerSection="-25.0" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-38" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-38" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-38" v="0.962" angle="16.91"/>
             </iidm:busBreakerTopology>
@@ -353,7 +353,7 @@
         <iidm:twoWindingsTransformer id="TWT-38-37" r="0.0" x="3.75E-4" g="0.0" b="0.0" ratedU1="0.935" ratedU2="1.0" bus1="BUS-38" connectableBus1="BUS-38" voltageLevelId1="VL-38" bus2="BUS-37" connectableBus2="BUS-37" voltageLevelId2="VL-37"/>
     </iidm:substation>
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-39" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-39" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-39" v="0.97" angle="8.41"/>
             </iidm:busBreakerTopology>
@@ -361,7 +361,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-19">
-        <iidm:voltageLevel id="VL-40" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-40" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-40" v="0.97" angle="7.35"/>
             </iidm:busBreakerTopology>
@@ -372,7 +372,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-18">
-        <iidm:voltageLevel id="VL-41" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-41" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-41" v="0.967" angle="6.92"/>
             </iidm:busBreakerTopology>
@@ -380,7 +380,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-17">
-        <iidm:voltageLevel id="VL-42" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-42" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-42" v="0.985" angle="8.53"/>
             </iidm:busBreakerTopology>
@@ -391,7 +391,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-16">
-        <iidm:voltageLevel id="VL-43" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-43" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-43" v="0.978" angle="11.28"/>
             </iidm:busBreakerTopology>
@@ -399,7 +399,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-15">
-        <iidm:voltageLevel id="VL-44" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-44" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-44" v="0.985" angle="13.82"/>
             </iidm:busBreakerTopology>
@@ -410,7 +410,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-14">
-        <iidm:voltageLevel id="VL-45" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-45" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-45" v="0.987" angle="15.67"/>
             </iidm:busBreakerTopology>
@@ -421,7 +421,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-13">
-        <iidm:voltageLevel id="VL-46" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-46" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-46" v="1.005" angle="18.49"/>
             </iidm:busBreakerTopology>
@@ -435,7 +435,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-12">
-        <iidm:voltageLevel id="VL-47" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-47" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-47" v="1.017" angle="20.73"/>
             </iidm:busBreakerTopology>
@@ -443,7 +443,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-11">
-        <iidm:voltageLevel id="VL-48" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-48" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-48" v="1.021" angle="19.93"/>
             </iidm:busBreakerTopology>
@@ -454,7 +454,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-10">
-        <iidm:voltageLevel id="VL-49" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-49" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-49" v="1.025" angle="20.94"/>
             </iidm:busBreakerTopology>
@@ -465,7 +465,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-98">
-        <iidm:voltageLevel id="VL-50" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-50" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-50" v="1.001" angle="18.9"/>
             </iidm:busBreakerTopology>
@@ -473,7 +473,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-97">
-        <iidm:voltageLevel id="VL-51" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-51" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-51" v="0.967" angle="16.28"/>
             </iidm:busBreakerTopology>
@@ -481,7 +481,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-96">
-        <iidm:voltageLevel id="VL-52" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-52" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-52" v="0.957" angle="15.32"/>
             </iidm:busBreakerTopology>
@@ -489,7 +489,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-95">
-        <iidm:voltageLevel id="VL-53" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-53" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-53" v="0.946" angle="14.35"/>
             </iidm:busBreakerTopology>
@@ -497,7 +497,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-93">
-        <iidm:voltageLevel id="VL-54" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-54" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-54" v="0.955" angle="15.26"/>
             </iidm:busBreakerTopology>
@@ -508,7 +508,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-91">
-        <iidm:voltageLevel id="VL-55" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-55" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-55" v="0.952" angle="14.97"/>
             </iidm:busBreakerTopology>
@@ -519,7 +519,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-89">
-        <iidm:voltageLevel id="VL-56" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-56" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-56" v="0.954" angle="15.16"/>
             </iidm:busBreakerTopology>
@@ -530,7 +530,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-88">
-        <iidm:voltageLevel id="VL-57" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-57" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-57" v="0.971" angle="16.36"/>
             </iidm:busBreakerTopology>
@@ -538,7 +538,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-87">
-        <iidm:voltageLevel id="VL-58" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-58" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-58" v="0.959" angle="15.51"/>
             </iidm:busBreakerTopology>
@@ -546,7 +546,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-86">
-        <iidm:voltageLevel id="VL-59" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-59" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-59" v="0.985" angle="19.37"/>
             </iidm:busBreakerTopology>
@@ -555,7 +555,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-59" loadType="UNDEFINED" p0="277.0" q0="113.0" bus="BUS-59" connectableBus="BUS-59"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-63" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-63" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-63" v="0.969" angle="22.75"/>
             </iidm:busBreakerTopology>
@@ -563,7 +563,7 @@
         <iidm:twoWindingsTransformer id="TWT-63-59" r="0.0" x="3.8600000000000006E-4" g="0.0" b="0.0" ratedU1="0.96" ratedU2="1.0" bus1="BUS-63" connectableBus1="BUS-63" voltageLevelId1="VL-63" bus2="BUS-59" connectableBus2="BUS-59" voltageLevelId2="VL-59"/>
     </iidm:substation>
     <iidm:substation id="SUB-104">
-        <iidm:voltageLevel id="VL-60" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-60" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-60" v="0.993" angle="23.15"/>
             </iidm:busBreakerTopology>
@@ -571,7 +571,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-102">
-        <iidm:voltageLevel id="VL-61" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-61" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-61" v="0.995" angle="24.04"/>
             </iidm:busBreakerTopology>
@@ -579,7 +579,7 @@
                 <iidm:minMaxReactiveLimits minQ="-100.0" maxQ="300.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-64" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-64" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-64" v="0.984" angle="24.52"/>
             </iidm:busBreakerTopology>
@@ -587,7 +587,7 @@
         <iidm:twoWindingsTransformer id="TWT-64-61" r="0.0" x="2.68E-4" g="0.0" b="0.0" ratedU1="0.985" ratedU2="1.0" bus1="BUS-64" connectableBus1="BUS-64" voltageLevelId1="VL-64" bus2="BUS-61" connectableBus2="BUS-61" voltageLevelId2="VL-61"/>
     </iidm:substation>
     <iidm:substation id="SUB-103">
-        <iidm:voltageLevel id="VL-62" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-62" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-62" v="0.998" angle="23.43"/>
             </iidm:busBreakerTopology>
@@ -598,7 +598,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-101">
-        <iidm:voltageLevel id="VL-65" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-65" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-65" v="1.005" angle="27.65"/>
             </iidm:busBreakerTopology>
@@ -606,7 +606,7 @@
                 <iidm:minMaxReactiveLimits minQ="-67.0" maxQ="200.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-66" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-66" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-66" v="1.05" angle="27.48"/>
             </iidm:busBreakerTopology>
@@ -618,7 +618,7 @@
         <iidm:twoWindingsTransformer id="TWT-65-66" r="0.0" x="3.7E-4" g="0.0" b="0.0" ratedU1="0.935" ratedU2="1.0" bus1="BUS-65" connectableBus1="BUS-65" voltageLevelId1="VL-65" bus2="BUS-66" connectableBus2="BUS-66" voltageLevelId2="VL-66"/>
     </iidm:substation>
     <iidm:substation id="SUB-100">
-        <iidm:voltageLevel id="VL-67" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-67" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-67" v="1.02" angle="24.84"/>
             </iidm:busBreakerTopology>
@@ -626,12 +626,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-99">
-        <iidm:voltageLevel id="VL-68" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-68" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-68" v="1.003" angle="27.55"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-69" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-69" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-69" v="1.035" angle="30.0"/>
             </iidm:busBreakerTopology>
@@ -642,7 +642,7 @@
         <iidm:twoWindingsTransformer id="TWT-68-69" r="0.0" x="3.7E-4" g="0.0" b="0.0" ratedU1="0.935" ratedU2="1.0" bus1="BUS-68" connectableBus1="BUS-68" voltageLevelId1="VL-68" bus2="BUS-69" connectableBus2="BUS-69" voltageLevelId2="VL-69"/>
     </iidm:substation>
     <iidm:substation id="SUB-76">
-        <iidm:voltageLevel id="VL-70" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-70" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-70" v="0.984" angle="22.58"/>
             </iidm:busBreakerTopology>
@@ -653,14 +653,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-75">
-        <iidm:voltageLevel id="VL-71" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-71" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-71" v="0.987" angle="22.15"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-74">
-        <iidm:voltageLevel id="VL-72" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-72" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-72" v="0.98" angle="20.98"/>
             </iidm:busBreakerTopology>
@@ -671,7 +671,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-73">
-        <iidm:voltageLevel id="VL-73" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-73" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-73" v="0.991" angle="21.94"/>
             </iidm:busBreakerTopology>
@@ -682,7 +682,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-72">
-        <iidm:voltageLevel id="VL-74" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-74" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-74" v="0.958" angle="21.64"/>
             </iidm:busBreakerTopology>
@@ -696,7 +696,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-71">
-        <iidm:voltageLevel id="VL-75" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-75" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-75" v="0.967" angle="22.91"/>
             </iidm:busBreakerTopology>
@@ -704,7 +704,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-70">
-        <iidm:voltageLevel id="VL-76" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-76" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-76" v="0.943" angle="21.77"/>
             </iidm:busBreakerTopology>
@@ -715,7 +715,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-69">
-        <iidm:voltageLevel id="VL-77" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-77" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-77" v="1.006" angle="26.72"/>
             </iidm:busBreakerTopology>
@@ -726,7 +726,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-68">
-        <iidm:voltageLevel id="VL-78" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-78" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-78" v="1.003" angle="26.42"/>
             </iidm:busBreakerTopology>
@@ -734,7 +734,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-67">
-        <iidm:voltageLevel id="VL-79" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-79" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-79" v="1.009" angle="26.72"/>
             </iidm:busBreakerTopology>
@@ -745,7 +745,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-85">
-        <iidm:voltageLevel id="VL-80" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-80" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-80" v="1.04" angle="28.96"/>
             </iidm:busBreakerTopology>
@@ -754,7 +754,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-80" loadType="UNDEFINED" p0="130.0" q0="26.0" bus="BUS-80" connectableBus="BUS-80"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-81" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-81" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-81" v="0.997" angle="28.1"/>
             </iidm:busBreakerTopology>
@@ -762,7 +762,7 @@
         <iidm:twoWindingsTransformer id="TWT-81-80" r="0.0" x="3.7E-4" g="0.0" b="0.0" ratedU1="0.935" ratedU2="1.0" bus1="BUS-81" connectableBus1="BUS-81" voltageLevelId1="VL-81" bus2="BUS-80" connectableBus2="BUS-80" voltageLevelId2="VL-80"/>
     </iidm:substation>
     <iidm:substation id="SUB-84">
-        <iidm:voltageLevel id="VL-82" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-82" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-82" v="0.989" angle="27.24"/>
             </iidm:busBreakerTopology>
@@ -773,7 +773,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-83">
-        <iidm:voltageLevel id="VL-83" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-83" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-83" v="0.985" angle="28.42"/>
             </iidm:busBreakerTopology>
@@ -784,7 +784,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-82">
-        <iidm:voltageLevel id="VL-84" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-84" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-84" v="0.98" angle="30.95"/>
             </iidm:busBreakerTopology>
@@ -792,7 +792,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-81">
-        <iidm:voltageLevel id="VL-85" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-85" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-85" v="0.985" angle="32.51"/>
             </iidm:busBreakerTopology>
@@ -803,7 +803,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-80">
-        <iidm:voltageLevel id="VL-86" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-86" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-86" v="0.987" angle="31.14"/>
             </iidm:busBreakerTopology>
@@ -811,7 +811,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-79">
-        <iidm:voltageLevel id="VL-87" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-87" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-87" v="1.015" angle="31.4"/>
             </iidm:busBreakerTopology>
@@ -821,7 +821,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-78">
-        <iidm:voltageLevel id="VL-88" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-88" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-88" v="0.987" angle="35.64"/>
             </iidm:busBreakerTopology>
@@ -829,7 +829,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-77">
-        <iidm:voltageLevel id="VL-89" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-89" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-89" v="1.005" angle="39.69"/>
             </iidm:busBreakerTopology>
@@ -839,7 +839,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-38">
-        <iidm:voltageLevel id="VL-90" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-90" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-90" v="0.985" angle="33.29"/>
             </iidm:busBreakerTopology>
@@ -850,7 +850,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-37">
-        <iidm:voltageLevel id="VL-91" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-91" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-91" v="0.98" angle="33.31"/>
             </iidm:busBreakerTopology>
@@ -861,7 +861,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-36">
-        <iidm:voltageLevel id="VL-92" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-92" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-92" v="0.993" angle="33.8"/>
             </iidm:busBreakerTopology>
@@ -872,7 +872,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-35">
-        <iidm:voltageLevel id="VL-93" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-93" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-93" v="0.987" angle="30.79"/>
             </iidm:busBreakerTopology>
@@ -880,7 +880,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-34">
-        <iidm:voltageLevel id="VL-94" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-94" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-94" v="0.991" angle="28.64"/>
             </iidm:busBreakerTopology>
@@ -888,7 +888,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-33">
-        <iidm:voltageLevel id="VL-95" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-95" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-95" v="0.981" angle="27.67"/>
             </iidm:busBreakerTopology>
@@ -896,7 +896,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-32">
-        <iidm:voltageLevel id="VL-96" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-96" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-96" v="0.993" angle="27.51"/>
             </iidm:busBreakerTopology>
@@ -904,7 +904,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-31">
-        <iidm:voltageLevel id="VL-97" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-97" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-97" v="1.011" angle="27.88"/>
             </iidm:busBreakerTopology>
@@ -912,7 +912,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-30">
-        <iidm:voltageLevel id="VL-98" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-98" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-98" v="1.024" angle="27.4"/>
             </iidm:busBreakerTopology>
@@ -920,7 +920,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-28">
-        <iidm:voltageLevel id="VL-99" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-99" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-99" v="1.01" angle="27.04"/>
             </iidm:busBreakerTopology>
@@ -931,7 +931,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-43">
-        <iidm:voltageLevel id="VL-100" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-100" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-100" v="1.017" angle="28.03"/>
             </iidm:busBreakerTopology>
@@ -942,7 +942,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-44">
-        <iidm:voltageLevel id="VL-101" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-101" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-101" v="0.993" angle="29.61"/>
             </iidm:busBreakerTopology>
@@ -950,7 +950,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-39">
-        <iidm:voltageLevel id="VL-102" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-102" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-102" v="0.991" angle="32.3"/>
             </iidm:busBreakerTopology>
@@ -958,7 +958,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-40">
-        <iidm:voltageLevel id="VL-103" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-103" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-103" v="1.001" angle="24.44"/>
             </iidm:busBreakerTopology>
@@ -969,7 +969,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-41">
-        <iidm:voltageLevel id="VL-104" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-104" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-104" v="0.971" angle="21.69"/>
             </iidm:busBreakerTopology>
@@ -980,7 +980,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-42">
-        <iidm:voltageLevel id="VL-105" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-105" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-105" v="0.965" angle="20.57"/>
             </iidm:busBreakerTopology>
@@ -994,7 +994,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-49">
-        <iidm:voltageLevel id="VL-106" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-106" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-106" v="0.962" angle="20.32"/>
             </iidm:busBreakerTopology>
@@ -1002,7 +1002,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-50">
-        <iidm:voltageLevel id="VL-107" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-107" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-107" v="0.952" angle="17.53"/>
             </iidm:busBreakerTopology>
@@ -1016,7 +1016,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-52">
-        <iidm:voltageLevel id="VL-108" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-108" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-108" v="0.967" angle="19.38"/>
             </iidm:busBreakerTopology>
@@ -1024,7 +1024,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-54">
-        <iidm:voltageLevel id="VL-109" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-109" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-109" v="0.967" angle="18.93"/>
             </iidm:busBreakerTopology>
@@ -1032,7 +1032,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-62">
-        <iidm:voltageLevel id="VL-110" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-110" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-110" v="0.973" angle="18.09"/>
             </iidm:busBreakerTopology>
@@ -1046,7 +1046,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-63">
-        <iidm:voltageLevel id="VL-111" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-111" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-111" v="0.98" angle="19.74"/>
             </iidm:busBreakerTopology>
@@ -1056,7 +1056,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-64">
-        <iidm:voltageLevel id="VL-112" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-112" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-112" v="0.975" angle="14.99"/>
             </iidm:busBreakerTopology>
@@ -1067,7 +1067,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-58">
-        <iidm:voltageLevel id="VL-113" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-113" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-113" v="0.993" angle="13.74"/>
             </iidm:busBreakerTopology>
@@ -1078,7 +1078,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-59">
-        <iidm:voltageLevel id="VL-114" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-114" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-114" v="0.96" angle="14.46"/>
             </iidm:busBreakerTopology>
@@ -1086,7 +1086,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-60">
-        <iidm:voltageLevel id="VL-115" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-115" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-115" v="0.96" angle="14.46"/>
             </iidm:busBreakerTopology>
@@ -1094,7 +1094,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-61">
-        <iidm:voltageLevel id="VL-116" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-116" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-116" v="1.005" angle="27.12"/>
             </iidm:busBreakerTopology>
@@ -1105,7 +1105,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-65">
-        <iidm:voltageLevel id="VL-117" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-117" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-117" v="0.974" angle="10.67"/>
             </iidm:busBreakerTopology>
@@ -1113,7 +1113,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-66">
-        <iidm:voltageLevel id="VL-118" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-118" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-118" v="0.949" angle="21.92"/>
             </iidm:busBreakerTopology>
diff --git a/matpower/matpower-converter/src/test/resources/ieee14-phase-shifter.xiidm b/matpower/matpower-converter/src/test/resources/ieee14-phase-shifter.xiidm
index bb7c5c9b186..feed8a8655e 100644
--- a/matpower/matpower-converter/src/test/resources/ieee14-phase-shifter.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee14-phase-shifter.xiidm
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee14-phase-shifter" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="1.06" angle="0.0"/>
             </iidm:busBreakerTopology>
@@ -11,7 +11,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="1.0449999999999997" angle="-5.000328510465844"/>
             </iidm:busBreakerTopology>
@@ -22,7 +22,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-10">
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="1.01" angle="-12.78892335601888"/>
             </iidm:busBreakerTopology>
@@ -33,18 +33,18 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="1.0173494845822744" angle="-10.412306262257337"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-4" loadType="UNDEFINED" p0="47.8" q0="-3.9" bus="BUS-4" connectableBus="BUS-4"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="1.061731342223832" angle="-10.185085117783457"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="1.0582629220284285" angle="-12.65099581261227"/>
             </iidm:busBreakerTopology>
@@ -61,13 +61,13 @@
         <iidm:twoWindingsTransformer id="TWT-4-9" r="0.0" x="0.0055618" g="0.0" b="0.0" ratedU1="0.969" ratedU2="1.0" bus1="BUS-4" connectableBus1="BUS-4" voltageLevelId1="VL-4" bus2="BUS-9" connectableBus2="BUS-9" voltageLevelId2="VL-9"/>
     </iidm:substation>
     <iidm:substation id="SUB-11">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="1.0200789534978287" angle="-8.724093100611777"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-5" loadType="UNDEFINED" p0="7.6" q0="1.6" bus="BUS-5" connectableBus="BUS-5"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="1.07" angle="-13.22467775771849"/>
             </iidm:busBreakerTopology>
@@ -79,7 +79,7 @@
         <iidm:twoWindingsTransformer id="TWT-5-6" r="0.0" x="0.0025202000000000002" g="0.0" b="0.0" ratedU1="0.932" ratedU2="1.0" bus1="BUS-5" connectableBus1="BUS-5" voltageLevelId1="VL-5" bus2="BUS-6" connectableBus2="BUS-6" voltageLevelId2="VL-6"/>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.09" angle="-10.185085117783467"/>
             </iidm:busBreakerTopology>
@@ -89,7 +89,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-10" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-10" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-10" v="1.0531461836881817" angle="-13.035710471997398"/>
             </iidm:busBreakerTopology>
@@ -97,7 +97,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-11" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-11" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-11" v="1.0582558695370825" angle="-13.25292235374066"/>
             </iidm:busBreakerTopology>
@@ -105,7 +105,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-12" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-12" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-12" v="1.0551462766263606" angle="-13.988186540628082"/>
             </iidm:busBreakerTopology>
@@ -113,7 +113,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-13" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-13" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-13" v="1.0509495051495474" angle="-13.97721516091526"/>
             </iidm:busBreakerTopology>
@@ -121,7 +121,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-14" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-14" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-14" v="1.037140277380203" angle="-14.223902738389041"/>
             </iidm:busBreakerTopology>
diff --git a/matpower/matpower-converter/src/test/resources/ieee14.xiidm b/matpower/matpower-converter/src/test/resources/ieee14.xiidm
index 77617ecc014..aa0e075f7dc 100644
--- a/matpower/matpower-converter/src/test/resources/ieee14.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee14.xiidm
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee14" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="1.06" angle="0.0"/>
             </iidm:busBreakerTopology>
@@ -11,7 +11,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="1.045" angle="-4.98"/>
             </iidm:busBreakerTopology>
@@ -22,7 +22,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-10">
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="1.01" angle="-12.72"/>
             </iidm:busBreakerTopology>
@@ -33,18 +33,18 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="1.019" angle="-10.33"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-4" loadType="UNDEFINED" p0="47.8" q0="-3.9" bus="BUS-4" connectableBus="BUS-4"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="1.062" angle="-13.37"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="1.056" angle="-14.94"/>
             </iidm:busBreakerTopology>
@@ -57,13 +57,13 @@
         <iidm:twoWindingsTransformer id="TWT-4-9" r="0.0" x="0.0055618" g="0.0" b="0.0" ratedU1="0.969" ratedU2="1.0" bus1="BUS-4" connectableBus1="BUS-4" voltageLevelId1="VL-4" bus2="BUS-9" connectableBus2="BUS-9" voltageLevelId2="VL-9"/>
     </iidm:substation>
     <iidm:substation id="SUB-11">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="1.02" angle="-8.78"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-5" loadType="UNDEFINED" p0="7.6" q0="1.6" bus="BUS-5" connectableBus="BUS-5"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="1.07" angle="-14.22"/>
             </iidm:busBreakerTopology>
@@ -75,7 +75,7 @@
         <iidm:twoWindingsTransformer id="TWT-5-6" r="0.0" x="0.0025202000000000002" g="0.0" b="0.0" ratedU1="0.932" ratedU2="1.0" bus1="BUS-5" connectableBus1="BUS-5" voltageLevelId1="VL-5" bus2="BUS-6" connectableBus2="BUS-6" voltageLevelId2="VL-6"/>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.09" angle="-13.36"/>
             </iidm:busBreakerTopology>
@@ -85,7 +85,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-10" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-10" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-10" v="1.051" angle="-15.1"/>
             </iidm:busBreakerTopology>
@@ -93,7 +93,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-11" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-11" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-11" v="1.057" angle="-14.79"/>
             </iidm:busBreakerTopology>
@@ -101,7 +101,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-12" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-12" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-12" v="1.055" angle="-15.07"/>
             </iidm:busBreakerTopology>
@@ -109,7 +109,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-13" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-13" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-13" v="1.05" angle="-15.16"/>
             </iidm:busBreakerTopology>
@@ -117,7 +117,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-14" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-14" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-14" v="1.036" angle="-16.04"/>
             </iidm:busBreakerTopology>
diff --git a/matpower/matpower-converter/src/test/resources/ieee30.xiidm b/matpower/matpower-converter/src/test/resources/ieee30.xiidm
index f438d52a3fc..7ca24e8853d 100644
--- a/matpower/matpower-converter/src/test/resources/ieee30.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee30.xiidm
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee30" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-23">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="1.06" angle="0.0"/>
             </iidm:busBreakerTopology>
@@ -11,7 +11,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-24">
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="1.043" angle="-5.48"/>
             </iidm:busBreakerTopology>
@@ -22,7 +22,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-25">
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="1.021" angle="-7.96"/>
             </iidm:busBreakerTopology>
@@ -30,13 +30,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="1.012" angle="-9.62"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-4" loadType="UNDEFINED" p0="7.6" q0="1.6" bus="BUS-4" connectableBus="BUS-4"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-12" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-12" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-12" v="1.057" angle="-15.24"/>
             </iidm:busBreakerTopology>
@@ -45,7 +45,7 @@
         <iidm:twoWindingsTransformer id="TWT-4-12" r="0.0" x="0.00256" g="0.0" b="0.0" ratedU1="0.932" ratedU2="1.0" bus1="BUS-4" connectableBus1="BUS-4" voltageLevelId1="VL-4" bus2="BUS-12" connectableBus2="BUS-12" voltageLevelId2="VL-12"/>
     </iidm:substation>
     <iidm:substation id="SUB-26">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="1.01" angle="-14.37"/>
             </iidm:busBreakerTopology>
@@ -56,17 +56,17 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-12">
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="1.01" angle="-11.34"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="1.051" angle="-14.38"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-10" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-10" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-10" v="1.045" angle="-15.97"/>
             </iidm:busBreakerTopology>
@@ -79,7 +79,7 @@
         <iidm:twoWindingsTransformer id="TWT-6-10" r="0.0" x="0.005560000000000001" g="0.0" b="0.0" ratedU1="0.969" ratedU2="1.0" bus1="BUS-6" connectableBus1="BUS-6" voltageLevelId1="VL-6" bus2="BUS-10" connectableBus2="BUS-10" voltageLevelId2="VL-10"/>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="1.002" angle="-13.12"/>
             </iidm:busBreakerTopology>
@@ -87,7 +87,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-11">
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.01" angle="-12.1"/>
             </iidm:busBreakerTopology>
@@ -98,7 +98,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-10">
-        <iidm:voltageLevel id="VL-11" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-11" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-11" v="1.082" angle="-14.39"/>
             </iidm:busBreakerTopology>
@@ -108,7 +108,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-13" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-13" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-13" v="1.071" angle="-15.24"/>
             </iidm:busBreakerTopology>
@@ -118,7 +118,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-14" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-14" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-14" v="1.042" angle="-16.13"/>
             </iidm:busBreakerTopology>
@@ -126,7 +126,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-15" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-15" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-15" v="1.038" angle="-16.22"/>
             </iidm:busBreakerTopology>
@@ -134,7 +134,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-16" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-16" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-16" v="1.045" angle="-15.83"/>
             </iidm:busBreakerTopology>
@@ -142,7 +142,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-17" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-17" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-17" v="1.04" angle="-16.14"/>
             </iidm:busBreakerTopology>
@@ -150,7 +150,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-18" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-18" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-18" v="1.028" angle="-16.82"/>
             </iidm:busBreakerTopology>
@@ -158,7 +158,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-19" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-19" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-19" v="1.026" angle="-17.0"/>
             </iidm:busBreakerTopology>
@@ -166,7 +166,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-22">
-        <iidm:voltageLevel id="VL-20" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-20" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-20" v="1.03" angle="-16.8"/>
             </iidm:busBreakerTopology>
@@ -174,7 +174,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-21">
-        <iidm:voltageLevel id="VL-21" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-21" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-21" v="1.033" angle="-16.42"/>
             </iidm:busBreakerTopology>
@@ -182,14 +182,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-20">
-        <iidm:voltageLevel id="VL-22" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-22" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-22" v="1.033" angle="-16.41"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-19">
-        <iidm:voltageLevel id="VL-23" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-23" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-23" v="1.027" angle="-16.61"/>
             </iidm:busBreakerTopology>
@@ -197,7 +197,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-18">
-        <iidm:voltageLevel id="VL-24" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-24" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-24" v="1.021" angle="-16.78"/>
             </iidm:busBreakerTopology>
@@ -208,14 +208,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-17">
-        <iidm:voltageLevel id="VL-25" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-25" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-25" v="1.017" angle="-16.35"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-16">
-        <iidm:voltageLevel id="VL-26" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-26" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-26" v="1.0" angle="-16.77"/>
             </iidm:busBreakerTopology>
@@ -223,12 +223,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-15">
-        <iidm:voltageLevel id="VL-27" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-27" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-27" v="1.023" angle="-15.82"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-28" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-28" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-28" v="1.007" angle="-11.97"/>
             </iidm:busBreakerTopology>
@@ -236,7 +236,7 @@
         <iidm:twoWindingsTransformer id="TWT-28-27" r="0.0" x="0.00396" g="0.0" b="0.0" ratedU1="0.968" ratedU2="1.0" bus1="BUS-28" connectableBus1="BUS-28" voltageLevelId1="VL-28" bus2="BUS-27" connectableBus2="BUS-27" voltageLevelId2="VL-27"/>
     </iidm:substation>
     <iidm:substation id="SUB-14">
-        <iidm:voltageLevel id="VL-29" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-29" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-29" v="1.003" angle="-17.06"/>
             </iidm:busBreakerTopology>
@@ -244,7 +244,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-13">
-        <iidm:voltageLevel id="VL-30" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-30" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-30" v="0.992" angle="-17.94"/>
             </iidm:busBreakerTopology>
diff --git a/matpower/matpower-converter/src/test/resources/ieee300.xiidm b/matpower/matpower-converter/src/test/resources/ieee300.xiidm
index 022a6838927..ba6ce19d110 100644
--- a/matpower/matpower-converter/src/test/resources/ieee300.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee300.xiidm
@@ -1,30 +1,30 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee300" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-78">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="1.0284" angle="5.95"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-1" loadType="UNDEFINED" p0="90.0" q0="49.0" bus="BUS-1" connectableBus="BUS-1"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="1.0354" angle="7.74"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-2" loadType="UNDEFINED" p0="56.0" q0="15.0" bus="BUS-2" connectableBus="BUS-2"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="0.9971" angle="6.64"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-3" loadType="UNDEFINED" p0="20.0" q0="0.0" bus="BUS-3" connectableBus="BUS-3"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="1.0308" angle="4.71"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7001" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7001" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7001" v="1.0507" angle="10.79"/>
             </iidm:busBreakerTopology>
@@ -32,7 +32,7 @@
                 <iidm:minMaxReactiveLimits minQ="-210.0" maxQ="210.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7002" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7002" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7002" v="1.0507" angle="12.48"/>
             </iidm:busBreakerTopology>
@@ -40,7 +40,7 @@
                 <iidm:minMaxReactiveLimits minQ="-280.0" maxQ="280.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7003" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7003" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7003" v="1.0323" angle="13.76"/>
             </iidm:busBreakerTopology>
@@ -56,19 +56,19 @@
         <iidm:twoWindingsTransformer id="TWT-7003-3" r="0.0" x="1.0540000000000001E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-7003" connectableBus1="BUS-7003" voltageLevelId1="VL-7003" bus2="BUS-3" connectableBus2="BUS-3" voltageLevelId2="VL-3"/>
     </iidm:substation>
     <iidm:substation id="SUB-75">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="1.0191" angle="4.68"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-5" loadType="UNDEFINED" p0="353.0" q0="130.0" bus="BUS-5" connectableBus="BUS-5"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="1.0312" angle="6.99"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-6" loadType="UNDEFINED" p0="120.0" q0="41.0" bus="BUS-6" connectableBus="BUS-6"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="0.9934" angle="6.19"/>
             </iidm:busBreakerTopology>
@@ -77,7 +77,7 @@
         <iidm:twoWindingsTransformer id="TWT-7-6" r="0.0" x="3.9E-4" g="0.0" b="0.0" ratedU1="0.959" ratedU2="1.0" bus1="BUS-7" connectableBus1="BUS-7" voltageLevelId1="VL-7" bus2="BUS-6" connectableBus2="BUS-6" voltageLevelId2="VL-6"/>
     </iidm:substation>
     <iidm:substation id="SUB-76">
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.0153" angle="2.4"/>
             </iidm:busBreakerTopology>
@@ -88,7 +88,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-77">
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="1.0034" angle="2.85"/>
             </iidm:busBreakerTopology>
@@ -96,7 +96,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-42">
-        <iidm:voltageLevel id="VL-10" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-10" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-10" v="1.0205" angle="1.35"/>
             </iidm:busBreakerTopology>
@@ -105,18 +105,18 @@
             </iidm:generator>
             <iidm:load id="LOAD-10" loadType="UNDEFINED" p0="153.0" q0="33.0" bus="BUS-10" connectableBus="BUS-10"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-11" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-11" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-11" v="1.0057" angle="2.46"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-11" loadType="UNDEFINED" p0="83.0" q0="21.0" bus="BUS-11" connectableBus="BUS-11"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-12" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-12" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-12" v="0.9974" angle="5.21"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7011" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7011" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7011" v="1.0145" angle="4.99"/>
             </iidm:busBreakerTopology>
@@ -124,7 +124,7 @@
                 <iidm:minMaxReactiveLimits minQ="-100.0" maxQ="100.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7012" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7012" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7012" v="1.0507" angle="11.57"/>
             </iidm:busBreakerTopology>
@@ -138,7 +138,7 @@
         <iidm:twoWindingsTransformer id="TWT-7012-12" r="0.0" x="3.12E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-7012" connectableBus1="BUS-7012" voltageLevelId1="VL-7012" bus2="BUS-12" connectableBus2="BUS-12" voltageLevelId2="VL-12"/>
     </iidm:substation>
     <iidm:substation id="SUB-41">
-        <iidm:voltageLevel id="VL-13" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-13" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-13" v="0.9977" angle="-0.55"/>
             </iidm:busBreakerTopology>
@@ -146,7 +146,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-40">
-        <iidm:voltageLevel id="VL-14" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-14" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-14" v="0.9991" angle="-4.81"/>
             </iidm:busBreakerTopology>
@@ -154,24 +154,24 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-39">
-        <iidm:voltageLevel id="VL-15" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-15" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-15" v="1.0343" angle="-8.59"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-15" loadType="UNDEFINED" p0="126.7" q0="23.0" bus="BUS-15" connectableBus="BUS-15"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-16" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-16" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-16" v="1.0315" angle="-2.65"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-17" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-17" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-17" v="1.0649" angle="-13.1"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-17" loadType="UNDEFINED" p0="561.0" q0="220.0" bus="BUS-17" connectableBus="BUS-17"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7017" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7017" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7017" v="1.0507" angle="-10.47"/>
             </iidm:busBreakerTopology>
@@ -184,14 +184,14 @@
         <iidm:twoWindingsTransformer id="TWT-7017-17" r="0.0" x="1.6539999999999998E-4" g="0.0" b="0.0" ratedU1="0.942" ratedU2="1.0" bus1="BUS-7017" connectableBus1="BUS-7017" voltageLevelId1="VL-7017" bus2="BUS-17" connectableBus2="BUS-17" voltageLevelId2="VL-17"/>
     </iidm:substation>
     <iidm:substation id="SUB-38">
-        <iidm:voltageLevel id="VL-19" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-19" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-19" v="0.982" angle="1.08"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-58">
-        <iidm:voltageLevel id="VL-20" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-20" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-20" v="1.001" angle="-2.46"/>
             </iidm:busBreakerTopology>
@@ -200,7 +200,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-20" loadType="UNDEFINED" p0="605.0" q0="120.0" bus="BUS-20" connectableBus="BUS-20"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-21" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-21" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-21" v="0.9752" angle="1.62"/>
             </iidm:busBreakerTopology>
@@ -209,7 +209,7 @@
         <iidm:twoWindingsTransformer id="TWT-21-20" r="0.0" x="1.4000000000000001E-4" g="0.0" b="0.0" ratedU1="0.952" ratedU2="1.0" bus1="BUS-21" connectableBus1="BUS-21" voltageLevelId1="VL-21" bus2="BUS-20" connectableBus2="BUS-20" voltageLevelId2="VL-20"/>
     </iidm:substation>
     <iidm:substation id="SUB-56">
-        <iidm:voltageLevel id="VL-22" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-22" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-22" v="0.9963" angle="-1.97"/>
             </iidm:busBreakerTopology>
@@ -217,18 +217,18 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-23" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-23" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-23" v="1.0501" angle="3.94"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-23" loadType="UNDEFINED" p0="21.0" q0="7.0" bus="BUS-23" connectableBus="BUS-23"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-24" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-24" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-24" v="1.0057" angle="6.02"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7023" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7023" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7023" v="1.0507" angle="6.15"/>
             </iidm:busBreakerTopology>
@@ -236,7 +236,7 @@
                 <iidm:minMaxReactiveLimits minQ="0.0" maxQ="120.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7024" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7024" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7024" v="1.029" angle="12.6"/>
             </iidm:busBreakerTopology>
@@ -249,7 +249,7 @@
         <iidm:twoWindingsTransformer id="TWT-7024-24" r="0.0" x="2.89E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-7024" connectableBus1="BUS-7024" voltageLevelId1="VL-7024" bus2="BUS-24" connectableBus2="BUS-24" voltageLevelId2="VL-24"/>
     </iidm:substation>
     <iidm:substation id="SUB-55">
-        <iidm:voltageLevel id="VL-25" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-25" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-25" v="1.0234" angle="1.44"/>
             </iidm:busBreakerTopology>
@@ -257,7 +257,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-54">
-        <iidm:voltageLevel id="VL-26" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-26" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-26" v="0.9986" angle="-1.73"/>
             </iidm:busBreakerTopology>
@@ -265,7 +265,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-53">
-        <iidm:voltageLevel id="VL-27" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-27" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-27" v="0.975" angle="-4.9"/>
             </iidm:busBreakerTopology>
@@ -273,7 +273,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-33" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-33" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-33" v="1.0244" angle="-12.02"/>
             </iidm:busBreakerTopology>
@@ -281,19 +281,19 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-34" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-34" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-34" v="1.0414" angle="-7.94"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-35" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-35" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-35" v="0.9757" angle="-25.72"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-36" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-36" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-36" v="1.0011" angle="-22.59"/>
             </iidm:busBreakerTopology>
@@ -301,23 +301,23 @@
         <iidm:twoWindingsTransformer id="TWT-36-35" r="0.0" x="4.7E-4" g="0.0" b="0.0" ratedU1="1.01" ratedU2="1.0" bus1="BUS-36" connectableBus1="BUS-36" voltageLevelId1="VL-36" bus2="BUS-35" connectableBus2="BUS-35" voltageLevelId2="VL-35"/>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-37" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-37" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-37" v="1.0201" angle="-11.23"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-37" loadType="UNDEFINED" p0="85.0" q0="32.0" bus="BUS-37" connectableBus="BUS-37"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9001" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9001" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9001" v="1.0117" angle="-11.25"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9006" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9006" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9006" v="1.0029" angle="-17.42"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9012" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9012" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9012" v="1.0023" angle="-17.27"/>
             </iidm:busBreakerTopology>
@@ -327,7 +327,7 @@
         <iidm:twoWindingsTransformer id="TWT-9001-9012" r="3.624E-4" x="0.0064898" g="0.0" b="0.0" ratedU1="0.9796" ratedU2="1.0" bus1="BUS-9001" connectableBus1="BUS-9001" voltageLevelId1="VL-9001" bus2="BUS-9012" connectableBus2="BUS-9012" voltageLevelId2="VL-9012"/>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-38" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-38" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-38" v="1.0202" angle="-12.56"/>
             </iidm:busBreakerTopology>
@@ -335,12 +335,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-39" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-39" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-39" v="1.0535" angle="-5.81"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7039" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7039" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7039" v="1.05" angle="2.11"/>
             </iidm:busBreakerTopology>
@@ -351,7 +351,7 @@
         <iidm:twoWindingsTransformer id="TWT-7039-39" r="0.0" x="3.159E-4" g="0.0" b="0.0" ratedU1="0.965" ratedU2="1.0" bus1="BUS-7039" connectableBus1="BUS-7039" voltageLevelId1="VL-7039" bus2="BUS-39" connectableBus2="BUS-39" voltageLevelId2="VL-39"/>
     </iidm:substation>
     <iidm:substation id="SUB-26">
-        <iidm:voltageLevel id="VL-40" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-40" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-40" v="1.0216" angle="-12.78"/>
             </iidm:busBreakerTopology>
@@ -359,7 +359,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-25">
-        <iidm:voltageLevel id="VL-41" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-41" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-41" v="1.0292" angle="-10.45"/>
             </iidm:busBreakerTopology>
@@ -367,14 +367,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-24">
-        <iidm:voltageLevel id="VL-42" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-42" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-42" v="1.0448" angle="-7.44"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-23">
-        <iidm:voltageLevel id="VL-43" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-43" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-43" v="1.0006" angle="-16.79"/>
             </iidm:busBreakerTopology>
@@ -382,23 +382,23 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-22">
-        <iidm:voltageLevel id="VL-44" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-44" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-44" v="1.0086" angle="-17.47"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-44" loadType="UNDEFINED" p0="195.0" q0="29.0" bus="BUS-44" connectableBus="BUS-44"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-45" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-45" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-45" v="1.0215" angle="-14.74"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-46" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-46" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-46" v="1.0344" angle="-11.75"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7044" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7044" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7044" v="1.0145" angle="-13.92"/>
             </iidm:busBreakerTopology>
@@ -411,7 +411,7 @@
         <iidm:twoWindingsTransformer id="TWT-45-46" r="0.0" x="2.1E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-45" connectableBus1="BUS-45" voltageLevelId1="VL-45" bus2="BUS-46" connectableBus2="BUS-46" voltageLevelId2="VL-46"/>
     </iidm:substation>
     <iidm:substation id="SUB-21">
-        <iidm:voltageLevel id="VL-47" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-47" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-47" v="0.9777" angle="-23.17"/>
             </iidm:busBreakerTopology>
@@ -419,7 +419,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-20">
-        <iidm:voltageLevel id="VL-48" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-48" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-48" v="1.0019" angle="-16.09"/>
             </iidm:busBreakerTopology>
@@ -427,13 +427,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-19">
-        <iidm:voltageLevel id="VL-49" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-49" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-49" v="1.0475" angle="-2.95"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-49" loadType="UNDEFINED" p0="92.0" q0="26.0" bus="BUS-49" connectableBus="BUS-49"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7049" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7049" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7049" v="1.0507" angle="0.0"/>
             </iidm:busBreakerTopology>
@@ -444,7 +444,7 @@
         <iidm:twoWindingsTransformer id="TWT-7049-49" r="0.0" x="1.24E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-7049" connectableBus1="BUS-7049" voltageLevelId1="VL-7049" bus2="BUS-49" connectableBus2="BUS-49" voltageLevelId2="VL-49"/>
     </iidm:substation>
     <iidm:substation id="SUB-182">
-        <iidm:voltageLevel id="VL-51" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-51" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-51" v="1.0253" angle="-8.15"/>
             </iidm:busBreakerTopology>
@@ -452,7 +452,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-181">
-        <iidm:voltageLevel id="VL-52" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-52" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-52" v="0.9979" angle="-11.86"/>
             </iidm:busBreakerTopology>
@@ -460,7 +460,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-180">
-        <iidm:voltageLevel id="VL-53" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-53" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-53" v="0.9959" angle="-17.6"/>
             </iidm:busBreakerTopology>
@@ -468,7 +468,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-179">
-        <iidm:voltageLevel id="VL-54" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-54" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-54" v="1.005" angle="-16.25"/>
             </iidm:busBreakerTopology>
@@ -476,13 +476,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-59">
-        <iidm:voltageLevel id="VL-55" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-55" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-55" v="1.015" angle="-12.21"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-55" loadType="UNDEFINED" p0="22.0" q0="10.0" bus="BUS-55" connectableBus="BUS-55"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7055" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7055" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7055" v="0.9967" angle="-7.5"/>
             </iidm:busBreakerTopology>
@@ -493,13 +493,13 @@
         <iidm:twoWindingsTransformer id="TWT-7055-55" r="0.0" x="0.0019607" g="0.0" b="0.0" ratedU1="0.942" ratedU2="1.0" bus1="BUS-7055" connectableBus1="BUS-7055" voltageLevelId1="VL-7055" bus2="BUS-55" connectableBus2="BUS-55" voltageLevelId2="VL-55"/>
     </iidm:substation>
     <iidm:substation id="SUB-60">
-        <iidm:voltageLevel id="VL-57" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-57" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-57" v="1.0335" angle="-8.0"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-57" loadType="UNDEFINED" p0="98.0" q0="20.0" bus="BUS-57" connectableBus="BUS-57"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7057" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7057" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7057" v="1.0212" angle="-3.44"/>
             </iidm:busBreakerTopology>
@@ -510,7 +510,7 @@
         <iidm:twoWindingsTransformer id="TWT-7057-57" r="0.0" x="5.346999999999999E-4" g="0.0" b="0.0" ratedU1="0.95" ratedU2="1.0" bus1="BUS-7057" connectableBus1="BUS-7057" voltageLevelId1="VL-7057" bus2="BUS-57" connectableBus2="BUS-57" voltageLevelId2="VL-57"/>
     </iidm:substation>
     <iidm:substation id="SUB-178">
-        <iidm:voltageLevel id="VL-58" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-58" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-58" v="0.9918" angle="-5.99"/>
             </iidm:busBreakerTopology>
@@ -518,7 +518,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-177">
-        <iidm:voltageLevel id="VL-59" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-59" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-59" v="0.9789" angle="-5.29"/>
             </iidm:busBreakerTopology>
@@ -526,25 +526,25 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-191">
-        <iidm:voltageLevel id="VL-60" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-60" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-60" v="1.0246" angle="-9.56"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-150">
-        <iidm:voltageLevel id="VL-61" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-61" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-61" v="0.9906" angle="-3.47"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-61" loadType="UNDEFINED" p0="227.0" q0="110.0" bus="BUS-61" connectableBus="BUS-61"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-62" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-62" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-62" v="1.016" angle="-1.1"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7061" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7061" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7061" v="1.0145" angle="1.97"/>
             </iidm:busBreakerTopology>
@@ -552,7 +552,7 @@
                 <iidm:minMaxReactiveLimits minQ="-150.0" maxQ="150.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7062" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7062" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7062" v="1.0017" angle="5.8"/>
             </iidm:busBreakerTopology>
@@ -565,7 +565,7 @@
         <iidm:twoWindingsTransformer id="TWT-7062-62" r="0.0" x="3.214E-4" g="0.0" b="0.0" ratedU1="0.95" ratedU2="1.0" bus1="BUS-7062" connectableBus1="BUS-7062" voltageLevelId1="VL-7062" bus2="BUS-62" connectableBus2="BUS-62" voltageLevelId2="VL-62"/>
     </iidm:substation>
     <iidm:substation id="SUB-190">
-        <iidm:voltageLevel id="VL-63" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-63" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-63" v="0.9583" angle="-17.62"/>
             </iidm:busBreakerTopology>
@@ -574,7 +574,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-63" loadType="UNDEFINED" p0="70.0" q0="30.0" bus="BUS-63" connectableBus="BUS-63"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-64" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-64" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-64" v="0.948" angle="-12.97"/>
             </iidm:busBreakerTopology>
@@ -582,12 +582,12 @@
         <iidm:twoWindingsTransformer id="TWT-63-64" r="0.0" x="3.8E-4" g="0.0" b="0.0" ratedU1="1.017" ratedU2="1.0" bus1="BUS-63" connectableBus1="BUS-63" voltageLevelId1="VL-63" bus2="BUS-64" connectableBus2="BUS-64" voltageLevelId2="VL-64"/>
     </iidm:substation>
     <iidm:substation id="SUB-87">
-        <iidm:voltageLevel id="VL-69" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-69" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-69" v="0.963" angle="-25.66"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-201" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-201" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-201" v="0.9692" angle="-27.49"/>
             </iidm:busBreakerTopology>
@@ -596,7 +596,7 @@
         <iidm:twoWindingsTransformer id="TWT-201-69" r="0.0" x="9.8E-4" g="0.0" b="0.0" ratedU1="1.03" ratedU2="1.0" bus1="BUS-201" connectableBus1="BUS-201" voltageLevelId1="VL-201" bus2="BUS-69" connectableBus2="BUS-69" voltageLevelId2="VL-69"/>
     </iidm:substation>
     <iidm:substation id="SUB-149">
-        <iidm:voltageLevel id="VL-70" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-70" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-70" v="0.9513" angle="-35.16"/>
             </iidm:busBreakerTopology>
@@ -604,13 +604,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-148">
-        <iidm:voltageLevel id="VL-71" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-71" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-71" v="0.9793" angle="-29.88"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-71" loadType="UNDEFINED" p0="116.0" q0="38.0" bus="BUS-71" connectableBus="BUS-71"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7071" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7071" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7071" v="0.9893" angle="-25.35"/>
             </iidm:busBreakerTopology>
@@ -621,7 +621,7 @@
         <iidm:twoWindingsTransformer id="TWT-7071-71" r="0.0" x="6.896E-4" g="0.0" b="0.0" ratedU1="0.9565" ratedU2="1.0" bus1="BUS-7071" connectableBus1="BUS-7071" voltageLevelId1="VL-7071" bus2="BUS-71" connectableBus2="BUS-71" voltageLevelId2="VL-71"/>
     </iidm:substation>
     <iidm:substation id="SUB-146">
-        <iidm:voltageLevel id="VL-72" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-72" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-72" v="0.9696" angle="-27.48"/>
             </iidm:busBreakerTopology>
@@ -629,13 +629,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-144">
-        <iidm:voltageLevel id="VL-73" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-73" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-73" v="0.9775" angle="-25.77"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-73" loadType="UNDEFINED" p0="224.0" q0="71.0" bus="BUS-73" connectableBus="BUS-73"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-74" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-74" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-74" v="0.9964" angle="-22.0"/>
             </iidm:busBreakerTopology>
@@ -643,7 +643,7 @@
         <iidm:twoWindingsTransformer id="TWT-73-74" r="0.0" x="2.4400000000000002E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-73" connectableBus1="BUS-73" voltageLevelId1="VL-73" bus2="BUS-74" connectableBus2="BUS-74" voltageLevelId2="VL-74"/>
     </iidm:substation>
     <iidm:substation id="SUB-143">
-        <iidm:voltageLevel id="VL-76" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-76" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-76" v="0.9632" angle="-26.54"/>
             </iidm:busBreakerTopology>
@@ -654,7 +654,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-142">
-        <iidm:voltageLevel id="VL-77" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-77" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-77" v="0.9837" angle="-24.94"/>
             </iidm:busBreakerTopology>
@@ -662,14 +662,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-141">
-        <iidm:voltageLevel id="VL-78" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-78" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-78" v="0.99" angle="-24.05"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-140">
-        <iidm:voltageLevel id="VL-79" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-79" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-79" v="0.982" angle="-24.97"/>
             </iidm:busBreakerTopology>
@@ -677,7 +677,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-170">
-        <iidm:voltageLevel id="VL-80" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-80" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-80" v="0.9872" angle="-24.97"/>
             </iidm:busBreakerTopology>
@@ -685,12 +685,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-168">
-        <iidm:voltageLevel id="VL-81" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-81" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-81" v="1.034" angle="-18.89"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-88" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-88" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-88" v="1.0151" angle="-20.96"/>
             </iidm:busBreakerTopology>
@@ -698,7 +698,7 @@
         <iidm:twoWindingsTransformer id="TWT-81-88" r="0.0" x="2.0E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-81" connectableBus1="BUS-81" voltageLevelId1="VL-81" bus2="BUS-88" connectableBus2="BUS-88" voltageLevelId2="VL-88"/>
     </iidm:substation>
     <iidm:substation id="SUB-169">
-        <iidm:voltageLevel id="VL-84" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-84" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-84" v="1.025" angle="-17.16"/>
             </iidm:busBreakerTopology>
@@ -709,12 +709,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-104">
-        <iidm:voltageLevel id="VL-85" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-85" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-85" v="0.9872" angle="-17.68"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-99" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-99" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-99" v="0.9894" angle="-20.27"/>
             </iidm:busBreakerTopology>
@@ -723,12 +723,12 @@
         <iidm:twoWindingsTransformer id="TWT-85-99" r="0.0" x="4.8E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-85" connectableBus1="BUS-85" voltageLevelId1="VL-85" bus2="BUS-99" connectableBus2="BUS-99" voltageLevelId2="VL-99"/>
     </iidm:substation>
     <iidm:substation id="SUB-111">
-        <iidm:voltageLevel id="VL-86" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-86" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-86" v="0.9909" angle="-14.19"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-102" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-102" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-102" v="1.0008" angle="-15.23"/>
             </iidm:busBreakerTopology>
@@ -737,12 +737,12 @@
         <iidm:twoWindingsTransformer id="TWT-86-102" r="0.0" x="4.8E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-86" connectableBus1="BUS-86" voltageLevelId1="VL-86" bus2="BUS-102" connectableBus2="BUS-102" voltageLevelId2="VL-102"/>
     </iidm:substation>
     <iidm:substation id="SUB-107">
-        <iidm:voltageLevel id="VL-87" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-87" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-87" v="0.9921" angle="-7.77"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-94" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-94" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-94" v="0.993" angle="-9.42"/>
             </iidm:busBreakerTopology>
@@ -751,7 +751,7 @@
         <iidm:twoWindingsTransformer id="TWT-87-94" r="0.0" x="4.6E-4" g="0.0" b="0.0" ratedU1="1.015" ratedU2="1.0" bus1="BUS-87" connectableBus1="BUS-87" voltageLevelId1="VL-87" bus2="BUS-94" connectableBus2="BUS-94" voltageLevelId2="VL-94"/>
     </iidm:substation>
     <iidm:substation id="SUB-167">
-        <iidm:voltageLevel id="VL-89" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-89" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-89" v="1.0317" angle="-11.13"/>
             </iidm:busBreakerTopology>
@@ -759,7 +759,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-110">
-        <iidm:voltageLevel id="VL-90" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-90" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-90" v="1.0272" angle="-11.23"/>
             </iidm:busBreakerTopology>
@@ -767,7 +767,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-109">
-        <iidm:voltageLevel id="VL-91" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-91" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-91" v="1.052" angle="-9.4"/>
             </iidm:busBreakerTopology>
@@ -778,7 +778,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-108">
-        <iidm:voltageLevel id="VL-92" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-92" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-92" v="1.052" angle="-6.2"/>
             </iidm:busBreakerTopology>
@@ -789,7 +789,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-106">
-        <iidm:voltageLevel id="VL-97" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-97" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-97" v="1.0183" angle="-13.24"/>
             </iidm:busBreakerTopology>
@@ -797,7 +797,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-105">
-        <iidm:voltageLevel id="VL-98" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-98" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-98" v="1.0" angle="-14.6"/>
             </iidm:busBreakerTopology>
@@ -808,14 +808,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-119">
-        <iidm:voltageLevel id="VL-100" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-100" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-100" v="1.006" angle="-14.45"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-113">
-        <iidm:voltageLevel id="VL-103" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-103" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-103" v="1.0288" angle="-12.06"/>
             </iidm:busBreakerTopology>
@@ -823,7 +823,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-114">
-        <iidm:voltageLevel id="VL-104" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-104" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-104" v="0.9958" angle="-17.33"/>
             </iidm:busBreakerTopology>
@@ -831,7 +831,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-116">
-        <iidm:voltageLevel id="VL-105" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-105" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-105" v="1.0223" angle="-12.94"/>
             </iidm:busBreakerTopology>
@@ -839,7 +839,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-123">
-        <iidm:voltageLevel id="VL-107" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-107" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-107" v="1.0095" angle="-16.03"/>
             </iidm:busBreakerTopology>
@@ -847,7 +847,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-125">
-        <iidm:voltageLevel id="VL-108" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-108" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-108" v="0.99" angle="-20.26"/>
             </iidm:busBreakerTopology>
@@ -858,7 +858,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-127">
-        <iidm:voltageLevel id="VL-109" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-109" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-109" v="0.9749" angle="-26.06"/>
             </iidm:busBreakerTopology>
@@ -866,7 +866,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-133">
-        <iidm:voltageLevel id="VL-110" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-110" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-110" v="0.973" angle="-24.72"/>
             </iidm:busBreakerTopology>
@@ -874,7 +874,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-135">
-        <iidm:voltageLevel id="VL-112" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-112" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-112" v="0.9725" angle="-28.69"/>
             </iidm:busBreakerTopology>
@@ -882,7 +882,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-129">
-        <iidm:voltageLevel id="VL-113" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-113" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-113" v="0.97" angle="-25.38"/>
             </iidm:busBreakerTopology>
@@ -890,13 +890,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-97">
-        <iidm:voltageLevel id="VL-114" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-114" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-114" v="0.9747" angle="-28.59"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-114" loadType="UNDEFINED" p0="18.2" q0="0.0" bus="BUS-114" connectableBus="BUS-114"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-207" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-207" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-207" v="1.0137" angle="-27.44"/>
             </iidm:busBreakerTopology>
@@ -905,12 +905,12 @@
         <iidm:twoWindingsTransformer id="TWT-114-207" r="0.0" x="0.00149" g="0.0" b="0.0" ratedU1="0.967" ratedU2="1.0" bus1="BUS-114" connectableBus1="BUS-114" voltageLevelId1="VL-114" bus2="BUS-207" connectableBus2="BUS-207" voltageLevelId2="VL-207"/>
     </iidm:substation>
     <iidm:substation id="SUB-132">
-        <iidm:voltageLevel id="VL-115" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-115" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-115" v="0.9603" angle="-13.57"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-121" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-121" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-121" v="0.9871" angle="-12.64"/>
             </iidm:busBreakerTopology>
@@ -919,12 +919,12 @@
         <iidm:twoWindingsTransformer id="TWT-121-115" r="0.0" x="2.8000000000000003E-4" g="0.0" b="0.0" ratedU1="1.05" ratedU2="1.0" bus1="BUS-121" connectableBus1="BUS-121" voltageLevelId1="VL-121" bus2="BUS-115" connectableBus2="BUS-115" voltageLevelId2="VL-115"/>
     </iidm:substation>
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-116" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-116" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-116" v="1.0249" angle="-12.69"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-124" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-124" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-124" v="1.0233" angle="-13.49"/>
             </iidm:busBreakerTopology>
@@ -933,7 +933,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-124" loadType="UNDEFINED" p0="276.4" q0="59.3" bus="BUS-124" connectableBus="BUS-124"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-160" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-160" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-160" v="0.9998" angle="-12.55"/>
             </iidm:busBreakerTopology>
@@ -942,7 +942,7 @@
         <iidm:twoWindingsTransformer id="TWT-160-124" r="1.1999999999999999E-5" x="3.9600000000000003E-4" g="0.0" b="0.0" ratedU1="0.975" ratedU2="1.0" bus1="BUS-160" connectableBus1="BUS-160" voltageLevelId1="VL-160" bus2="BUS-124" connectableBus2="BUS-124" voltageLevelId2="VL-124"/>
     </iidm:substation>
     <iidm:substation id="SUB-137">
-        <iidm:voltageLevel id="VL-117" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-117" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-117" v="0.9348" angle="-4.72"/>
             </iidm:busBreakerTopology>
@@ -950,7 +950,7 @@
                 <iidm:shuntLinearModel bPerSection="325.0" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-159" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-159" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-159" v="0.9867" angle="-9.82"/>
             </iidm:busBreakerTopology>
@@ -959,7 +959,7 @@
         <iidm:twoWindingsTransformer id="TWT-159-117" r="0.0" x="1.6E-4" g="0.0" b="0.0" ratedU1="1.0506" ratedU2="1.0" bus1="BUS-159" connectableBus1="BUS-159" voltageLevelId1="VL-159" bus2="BUS-117" connectableBus2="BUS-117" voltageLevelId2="VL-117"/>
     </iidm:substation>
     <iidm:substation id="SUB-139">
-        <iidm:voltageLevel id="VL-118" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-118" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-118" v="0.9298" angle="-4.12"/>
             </iidm:busBreakerTopology>
@@ -967,7 +967,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-67">
-        <iidm:voltageLevel id="VL-119" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-119" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-119" v="1.0435" angle="5.17"/>
             </iidm:busBreakerTopology>
@@ -975,7 +975,7 @@
                 <iidm:minMaxReactiveLimits minQ="-500.0" maxQ="1500.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-1190" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1190" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1190" v="1.0128" angle="3.9"/>
             </iidm:busBreakerTopology>
@@ -984,7 +984,7 @@
         <iidm:twoWindingsTransformer id="TWT-119-1190" r="1.0E-5" x="2.3E-4" g="0.0" b="0.0" ratedU1="1.0223" ratedU2="1.0" bus1="BUS-119" connectableBus1="BUS-119" voltageLevelId1="VL-119" bus2="BUS-1190" connectableBus2="BUS-1190" voltageLevelId2="VL-1190"/>
     </iidm:substation>
     <iidm:substation id="SUB-84">
-        <iidm:voltageLevel id="VL-120" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-120" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-120" v="0.9584" angle="-8.77"/>
             </iidm:busBreakerTopology>
@@ -993,7 +993,7 @@
                 <iidm:shuntLinearModel bPerSection="55.0" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-1200" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1200" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1200" v="1.0244" angle="-7.52"/>
             </iidm:busBreakerTopology>
@@ -1002,13 +1002,13 @@
         <iidm:twoWindingsTransformer id="TWT-120-1200" r="0.0" x="2.3E-4" g="0.0" b="0.0" ratedU1="0.9284" ratedU2="1.0" bus1="BUS-120" connectableBus1="BUS-120" voltageLevelId1="VL-120" bus2="BUS-1200" connectableBus2="BUS-1200" voltageLevelId2="VL-1200"/>
     </iidm:substation>
     <iidm:substation id="SUB-160">
-        <iidm:voltageLevel id="VL-122" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-122" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-122" v="0.9728" angle="-14.36"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-122" loadType="UNDEFINED" p0="229.1" q0="11.8" bus="BUS-122" connectableBus="BUS-122"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-157" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-157" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-157" v="0.9845" angle="-11.93"/>
             </iidm:busBreakerTopology>
@@ -1017,7 +1017,7 @@
         <iidm:twoWindingsTransformer id="TWT-122-157" r="5.0E-6" x="1.95E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-122" connectableBus1="BUS-122" voltageLevelId1="VL-122" bus2="BUS-157" connectableBus2="BUS-157" voltageLevelId2="VL-157"/>
     </iidm:substation>
     <iidm:substation id="SUB-162">
-        <iidm:voltageLevel id="VL-123" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-123" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-123" v="1.0006" angle="-17.64"/>
             </iidm:busBreakerTopology>
@@ -1025,7 +1025,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-154">
-        <iidm:voltageLevel id="VL-125" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-125" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-125" v="1.0103" angle="-18.43"/>
             </iidm:busBreakerTopology>
@@ -1036,7 +1036,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-156">
-        <iidm:voltageLevel id="VL-126" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-126" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-126" v="0.9978" angle="-12.86"/>
             </iidm:busBreakerTopology>
@@ -1044,7 +1044,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-158">
-        <iidm:voltageLevel id="VL-127" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-127" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-127" v="1.0001" angle="-10.52"/>
             </iidm:busBreakerTopology>
@@ -1052,36 +1052,36 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-164">
-        <iidm:voltageLevel id="VL-128" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-128" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-128" v="1.0024" angle="-4.78"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-166">
-        <iidm:voltageLevel id="VL-129" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-129" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-129" v="1.0028" angle="-4.4"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-80">
-        <iidm:voltageLevel id="VL-130" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-130" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-130" v="1.0191" angle="5.56"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-131" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-131" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-131" v="0.9861" angle="6.06"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-150" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-150" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-150" v="0.9869" angle="6.34"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7130" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7130" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7130" v="1.0507" angle="19.02"/>
             </iidm:busBreakerTopology>
@@ -1094,17 +1094,17 @@
         <iidm:twoWindingsTransformer id="TWT-7130-130" r="0.0" x="1.9300000000000003E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-7130" connectableBus1="BUS-7130" voltageLevelId1="VL-7130" bus2="BUS-130" connectableBus2="BUS-130" voltageLevelId2="VL-130"/>
     </iidm:substation>
     <iidm:substation id="SUB-32">
-        <iidm:voltageLevel id="VL-132" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-132" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-132" v="1.0045" angle="3.04"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-151" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-151" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-151" v="1.0048" angle="4.13"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-170" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-170" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-170" v="0.929" angle="0.09"/>
             </iidm:busBreakerTopology>
@@ -1117,21 +1117,21 @@
         <iidm:twoWindingsTransformer id="TWT-151-170" r="1.0E-5" x="3.92E-4" g="0.0" b="0.0" ratedU1="1.05" ratedU2="1.0" bus1="BUS-151" connectableBus1="BUS-151" voltageLevelId1="VL-151" bus2="BUS-170" connectableBus2="BUS-170" voltageLevelId2="VL-170"/>
     </iidm:substation>
     <iidm:substation id="SUB-175">
-        <iidm:voltageLevel id="VL-133" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-133" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-133" v="1.002" angle="-5.46"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-176">
-        <iidm:voltageLevel id="VL-134" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-134" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-134" v="1.022" angle="-8.04"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-172">
-        <iidm:voltageLevel id="VL-135" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-135" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-135" v="1.0193" angle="-6.76"/>
             </iidm:busBreakerTopology>
@@ -1139,7 +1139,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-173">
-        <iidm:voltageLevel id="VL-136" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-136" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-136" v="1.0476" angle="1.54"/>
             </iidm:busBreakerTopology>
@@ -1147,13 +1147,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-12">
-        <iidm:voltageLevel id="VL-137" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-137" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-137" v="1.0471" angle="-1.45"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-137" loadType="UNDEFINED" p0="273.6" q0="99.8" bus="BUS-137" connectableBus="BUS-137"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-163" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-163" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-163" v="1.041" angle="2.91"/>
             </iidm:busBreakerTopology>
@@ -1162,7 +1162,7 @@
         <iidm:twoWindingsTransformer id="TWT-163-137" r="1.3E-5" x="3.8399999999999996E-4" g="0.0" b="-5.7" ratedU1="0.98" ratedU2="1.0" bus1="BUS-163" connectableBus1="BUS-163" voltageLevelId1="VL-163" bus2="BUS-137" connectableBus2="BUS-137" voltageLevelId2="VL-137"/>
     </iidm:substation>
     <iidm:substation id="SUB-174">
-        <iidm:voltageLevel id="VL-138" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-138" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-138" v="1.055" angle="-6.35"/>
             </iidm:busBreakerTopology>
@@ -1173,19 +1173,19 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-43">
-        <iidm:voltageLevel id="VL-139" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-139" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-139" v="1.0117" angle="-3.57"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-139" loadType="UNDEFINED" p0="595.0" q0="83.3" bus="BUS-139" connectableBus="BUS-139"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-182" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-182" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-182" v="1.0447" angle="-4.19"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-182" loadType="UNDEFINED" p0="240.7" q0="89.0" bus="BUS-182" connectableBus="BUS-182"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7139" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7139" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7139" v="1.0507" angle="2.75"/>
             </iidm:busBreakerTopology>
@@ -1197,7 +1197,7 @@
         <iidm:twoWindingsTransformer id="TWT-7139-139" r="0.0" x="1.67E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-7139" connectableBus1="BUS-7139" voltageLevelId1="VL-7139" bus2="BUS-139" connectableBus2="BUS-139" voltageLevelId2="VL-139"/>
     </iidm:substation>
     <iidm:substation id="SUB-185">
-        <iidm:voltageLevel id="VL-140" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-140" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-140" v="1.043" angle="-3.44"/>
             </iidm:busBreakerTopology>
@@ -1205,7 +1205,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-31">
-        <iidm:voltageLevel id="VL-141" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-141" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-141" v="1.051" angle="0.05"/>
             </iidm:busBreakerTopology>
@@ -1214,7 +1214,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-141" loadType="UNDEFINED" p0="145.0" q0="58.0" bus="BUS-141" connectableBus="BUS-141"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-174" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-174" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-174" v="1.0622" angle="-2.69"/>
             </iidm:busBreakerTopology>
@@ -1222,13 +1222,13 @@
         <iidm:twoWindingsTransformer id="TWT-141-174" r="2.3999999999999997E-5" x="6.03E-4" g="0.0" b="0.0" ratedU1="0.975" ratedU2="1.0" bus1="BUS-141" connectableBus1="BUS-141" voltageLevelId1="VL-141" bus2="BUS-174" connectableBus2="BUS-174" voltageLevelId2="VL-174"/>
     </iidm:substation>
     <iidm:substation id="SUB-34">
-        <iidm:voltageLevel id="VL-142" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-142" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-142" v="1.0155" angle="-2.77"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-142" loadType="UNDEFINED" p0="56.5" q0="24.5" bus="BUS-142" connectableBus="BUS-142"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-175" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-175" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-175" v="0.973" angle="-7.21"/>
             </iidm:busBreakerTopology>
@@ -1237,7 +1237,7 @@
         <iidm:twoWindingsTransformer id="TWT-142-175" r="2.3999999999999997E-5" x="4.98E-4" g="0.0" b="-8.7" ratedU1="1.0" ratedU2="1.0" bus1="BUS-142" connectableBus1="BUS-142" voltageLevelId1="VL-142" bus2="BUS-175" connectableBus2="BUS-175" voltageLevelId2="VL-175"/>
     </iidm:substation>
     <iidm:substation id="SUB-188">
-        <iidm:voltageLevel id="VL-143" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-143" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-143" v="1.0435" angle="4.03"/>
             </iidm:busBreakerTopology>
@@ -1246,12 +1246,12 @@
             </iidm:generator>
             <iidm:load id="LOAD-143" loadType="UNDEFINED" p0="89.5" q0="35.5" bus="BUS-143" connectableBus="BUS-143"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-144" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-144" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-144" v="1.016" angle="-0.7"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-148" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-148" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-148" v="1.0577" angle="0.28"/>
             </iidm:busBreakerTopology>
@@ -1261,13 +1261,13 @@
         <iidm:twoWindingsTransformer id="TWT-143-148" r="1.3E-5" x="3.71E-4" g="0.0" b="0.0" ratedU1="0.9565" ratedU2="1.0" bus1="BUS-143" connectableBus1="BUS-143" voltageLevelId1="VL-143" bus2="BUS-148" connectableBus2="BUS-148" voltageLevelId2="VL-148"/>
     </iidm:substation>
     <iidm:substation id="SUB-47">
-        <iidm:voltageLevel id="VL-145" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-145" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-145" v="1.0081" angle="-0.16"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-145" loadType="UNDEFINED" p0="24.0" q0="14.0" bus="BUS-145" connectableBus="BUS-145"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-180" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-180" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-180" v="0.9793" angle="-3.09"/>
             </iidm:busBreakerTopology>
@@ -1276,7 +1276,7 @@
         <iidm:twoWindingsTransformer id="TWT-145-180" r="5.0E-6" x="1.82E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-145" connectableBus1="BUS-145" voltageLevelId1="VL-145" bus2="BUS-180" connectableBus2="BUS-180" voltageLevelId2="VL-180"/>
     </iidm:substation>
     <iidm:substation id="SUB-186">
-        <iidm:voltageLevel id="VL-146" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-146" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-146" v="1.0528" angle="4.32"/>
             </iidm:busBreakerTopology>
@@ -1286,7 +1286,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-187">
-        <iidm:voltageLevel id="VL-147" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-147" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-147" v="1.0528" angle="8.36"/>
             </iidm:busBreakerTopology>
@@ -1296,7 +1296,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-189">
-        <iidm:voltageLevel id="VL-149" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-149" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-149" v="1.0735" angle="5.23"/>
             </iidm:busBreakerTopology>
@@ -1306,7 +1306,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-192">
-        <iidm:voltageLevel id="VL-152" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-152" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-152" v="1.0535" angle="9.24"/>
             </iidm:busBreakerTopology>
@@ -1317,7 +1317,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-44">
-        <iidm:voltageLevel id="VL-153" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-153" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-153" v="1.0435" angle="10.46"/>
             </iidm:busBreakerTopology>
@@ -1325,7 +1325,7 @@
                 <iidm:minMaxReactiveLimits minQ="-50.0" maxQ="90.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-183" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-183" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-183" v="0.9717" angle="7.12"/>
             </iidm:busBreakerTopology>
@@ -1334,7 +1334,7 @@
         <iidm:twoWindingsTransformer id="TWT-153-183" r="2.7000000000000002E-5" x="6.39E-4" g="0.0" b="0.0" ratedU1="1.073" ratedU2="1.0" bus1="BUS-153" connectableBus1="BUS-153" voltageLevelId1="VL-153" bus2="BUS-183" connectableBus2="BUS-183" voltageLevelId2="VL-183"/>
     </iidm:substation>
     <iidm:substation id="SUB-194">
-        <iidm:voltageLevel id="VL-154" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-154" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-154" v="0.9663" angle="-1.8"/>
             </iidm:busBreakerTopology>
@@ -1345,13 +1345,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-15">
-        <iidm:voltageLevel id="VL-155" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-155" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-155" v="1.0177" angle="6.75"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-155" loadType="UNDEFINED" p0="200.0" q0="50.0" bus="BUS-155" connectableBus="BUS-155"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-156" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-156" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-156" v="0.963" angle="5.15"/>
             </iidm:busBreakerTopology>
@@ -1360,7 +1360,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-156" loadType="UNDEFINED" p0="75.0" q0="50.0" bus="BUS-156" connectableBus="BUS-156"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-164" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-164" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-164" v="0.9839" angle="9.66"/>
             </iidm:busBreakerTopology>
@@ -1372,14 +1372,14 @@
         <iidm:twoWindingsTransformer id="TWT-164-155" r="9.0E-6" x="2.31E-4" g="0.0" b="-3.3000000000000003" ratedU1="0.956" ratedU2="1.0" bus1="BUS-164" connectableBus1="BUS-164" voltageLevelId1="VL-164" bus2="BUS-155" connectableBus2="BUS-155" voltageLevelId2="VL-155"/>
     </iidm:substation>
     <iidm:substation id="SUB-193">
-        <iidm:voltageLevel id="VL-158" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-158" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-158" v="0.9987" angle="-11.4"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-10">
-        <iidm:voltageLevel id="VL-161" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-161" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-161" v="1.036" angle="8.85"/>
             </iidm:busBreakerTopology>
@@ -1387,7 +1387,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-11">
-        <iidm:voltageLevel id="VL-162" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-162" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-162" v="0.9918" angle="18.5"/>
             </iidm:busBreakerTopology>
@@ -1395,14 +1395,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-16">
-        <iidm:voltageLevel id="VL-165" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-165" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-165" v="1.0002" angle="26.31"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-17">
-        <iidm:voltageLevel id="VL-166" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-166" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-166" v="0.9973" angle="30.22"/>
             </iidm:busBreakerTopology>
@@ -1410,7 +1410,7 @@
                 <iidm:shuntLinearModel bPerSection="-103.0" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-7166" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7166" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7166" v="1.0145" angle="35.05"/>
             </iidm:busBreakerTopology>
@@ -1421,7 +1421,7 @@
         <iidm:twoWindingsTransformer id="TWT-7166-166" r="0.0" x="1.54E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-7166" connectableBus1="BUS-7166" voltageLevelId1="VL-7166" bus2="BUS-166" connectableBus2="BUS-166" voltageLevelId2="VL-166"/>
     </iidm:substation>
     <iidm:substation id="SUB-18">
-        <iidm:voltageLevel id="VL-167" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-167" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-167" v="0.9715" angle="-6.91"/>
             </iidm:busBreakerTopology>
@@ -1429,21 +1429,21 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-13">
-        <iidm:voltageLevel id="VL-168" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-168" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-168" v="1.0024" angle="-4.8"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-14">
-        <iidm:voltageLevel id="VL-169" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-169" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-169" v="0.9879" angle="-6.68"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-28">
-        <iidm:voltageLevel id="VL-171" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-171" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-171" v="0.9829" angle="-9.94"/>
             </iidm:busBreakerTopology>
@@ -1454,7 +1454,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-29">
-        <iidm:voltageLevel id="VL-172" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-172" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-172" v="1.0244" angle="-6.22"/>
             </iidm:busBreakerTopology>
@@ -1462,7 +1462,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-30">
-        <iidm:voltageLevel id="VL-173" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-173" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-173" v="0.9837" angle="-12.75"/>
             </iidm:busBreakerTopology>
@@ -1473,7 +1473,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-35">
-        <iidm:voltageLevel id="VL-176" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-176" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-176" v="1.0522" angle="4.67"/>
             </iidm:busBreakerTopology>
@@ -1484,7 +1484,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-36">
-        <iidm:voltageLevel id="VL-177" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-177" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-177" v="1.0077" angle="0.62"/>
             </iidm:busBreakerTopology>
@@ -1495,7 +1495,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-37">
-        <iidm:voltageLevel id="VL-178" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-178" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-178" v="0.9397" angle="-6.56"/>
             </iidm:busBreakerTopology>
@@ -1503,7 +1503,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-33">
-        <iidm:voltageLevel id="VL-179" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-179" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-179" v="0.9699" angle="-9.37"/>
             </iidm:busBreakerTopology>
@@ -1514,7 +1514,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-48">
-        <iidm:voltageLevel id="VL-181" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-181" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-181" v="1.0518" angle="-1.33"/>
             </iidm:busBreakerTopology>
@@ -1522,7 +1522,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-45">
-        <iidm:voltageLevel id="VL-184" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-184" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-184" v="1.0386" angle="-6.85"/>
             </iidm:busBreakerTopology>
@@ -1530,7 +1530,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-46">
-        <iidm:voltageLevel id="VL-185" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-185" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-185" v="1.0522" angle="-4.33"/>
             </iidm:busBreakerTopology>
@@ -1540,7 +1540,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-49">
-        <iidm:voltageLevel id="VL-186" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-186" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-186" v="1.065" angle="2.17"/>
             </iidm:busBreakerTopology>
@@ -1551,7 +1551,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-50">
-        <iidm:voltageLevel id="VL-187" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-187" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-187" v="1.065" angle="1.4"/>
             </iidm:busBreakerTopology>
@@ -1562,7 +1562,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-51">
-        <iidm:voltageLevel id="VL-188" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-188" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-188" v="1.0533" angle="-0.72"/>
             </iidm:busBreakerTopology>
@@ -1570,13 +1570,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-52">
-        <iidm:voltageLevel id="VL-189" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-189" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-189" v="0.9975" angle="-25.84"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-189" loadType="UNDEFINED" p0="7.0" q0="2.0" bus="BUS-189" connectableBus="BUS-189"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-210" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-210" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-210" v="0.9788" angle="-24.22"/>
             </iidm:busBreakerTopology>
@@ -1584,7 +1584,7 @@
         <iidm:twoWindingsTransformer id="TWT-189-210" r="0.0" x="0.00252" g="0.0" b="0.0" ratedU1="1.03" ratedU2="1.0" bus1="BUS-189" connectableBus1="BUS-189" voltageLevelId1="VL-189" bus2="BUS-210" connectableBus2="BUS-210" voltageLevelId2="VL-210"/>
     </iidm:substation>
     <iidm:substation id="SUB-64">
-        <iidm:voltageLevel id="VL-190" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-190" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-190" v="1.0551" angle="-20.62"/>
             </iidm:busBreakerTopology>
@@ -1597,7 +1597,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-65">
-        <iidm:voltageLevel id="VL-191" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-191" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-191" v="1.0435" angle="12.25"/>
             </iidm:busBreakerTopology>
@@ -1608,7 +1608,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-66">
-        <iidm:voltageLevel id="VL-192" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-192" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-192" v="0.9374" angle="-11.18"/>
             </iidm:busBreakerTopology>
@@ -1616,12 +1616,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-61">
-        <iidm:voltageLevel id="VL-193" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-193" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-193" v="0.9897" angle="-26.09"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-196" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-196" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-196" v="0.9695" angle="-25.32"/>
             </iidm:busBreakerTopology>
@@ -1630,31 +1630,31 @@
         <iidm:twoWindingsTransformer id="TWT-193-196" r="0.0" x="0.00237" g="0.0" b="0.0" ratedU1="1.03" ratedU2="1.0" bus1="BUS-193" connectableBus1="BUS-193" voltageLevelId1="VL-193" bus2="BUS-196" connectableBus2="BUS-196" voltageLevelId2="VL-196"/>
     </iidm:substation>
     <iidm:substation id="SUB-62">
-        <iidm:voltageLevel id="VL-194" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-194" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-194" v="1.0489" angle="-19.21"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-63">
-        <iidm:voltageLevel id="VL-195" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-195" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-195" v="1.0357" angle="-20.79"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-202" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-202" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-202" v="0.9908" angle="-25.33"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-202" loadType="UNDEFINED" p0="38.0" q0="13.0" bus="BUS-202" connectableBus="BUS-202"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-211" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-211" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-211" v="1.0017" angle="-23.31"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-211" loadType="UNDEFINED" p0="96.0" q0="7.0" bus="BUS-211" connectableBus="BUS-211"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-212" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-212" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-212" v="1.0132" angle="-22.51"/>
             </iidm:busBreakerTopology>
@@ -1664,7 +1664,7 @@
         <iidm:twoWindingsTransformer id="TWT-211-212" r="3.0E-5" x="1.2200000000000001E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-211" connectableBus1="BUS-211" voltageLevelId1="VL-211" bus2="BUS-212" connectableBus2="BUS-212" voltageLevelId2="VL-212"/>
     </iidm:substation>
     <iidm:substation id="SUB-68">
-        <iidm:voltageLevel id="VL-197" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-197" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-197" v="0.9907" angle="-23.72"/>
             </iidm:busBreakerTopology>
@@ -1672,7 +1672,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-69">
-        <iidm:voltageLevel id="VL-198" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-198" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-198" v="1.015" angle="-20.58"/>
             </iidm:busBreakerTopology>
@@ -1681,7 +1681,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-198" loadType="UNDEFINED" p0="64.0" q0="21.0" bus="BUS-198" connectableBus="BUS-198"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-209" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-209" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-209" v="0.9999" angle="-25.66"/>
             </iidm:busBreakerTopology>
@@ -1690,7 +1690,7 @@
         <iidm:twoWindingsTransformer id="TWT-209-198" r="2.6E-4" x="0.00211" g="0.0" b="0.0" ratedU1="1.03" ratedU2="1.0" bus1="BUS-209" connectableBus1="BUS-209" voltageLevelId1="VL-209" bus2="BUS-198" connectableBus2="BUS-198" voltageLevelId2="VL-198"/>
     </iidm:substation>
     <iidm:substation id="SUB-70">
-        <iidm:voltageLevel id="VL-199" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-199" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-199" v="0.9528" angle="-26.05"/>
             </iidm:busBreakerTopology>
@@ -1698,13 +1698,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-93">
-        <iidm:voltageLevel id="VL-200" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-200" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-200" v="0.955" angle="-25.93"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-200" loadType="UNDEFINED" p0="27.0" q0="12.0" bus="BUS-200" connectableBus="BUS-200"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-248" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-248" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-248" v="0.976" angle="-25.23"/>
             </iidm:busBreakerTopology>
@@ -1716,7 +1716,7 @@
         <iidm:twoWindingsTransformer id="TWT-200-248" r="0.0" x="0.0022" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-200" connectableBus1="BUS-200" voltageLevelId1="VL-200" bus2="BUS-248" connectableBus2="BUS-248" voltageLevelId2="VL-248"/>
     </iidm:substation>
     <iidm:substation id="SUB-90">
-        <iidm:voltageLevel id="VL-203" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-203" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-203" v="1.0033" angle="-22.35"/>
             </iidm:busBreakerTopology>
@@ -1724,13 +1724,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-57">
-        <iidm:voltageLevel id="VL-204" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-204" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-204" v="0.9718" angle="-25.7"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-204" loadType="UNDEFINED" p0="72.0" q0="24.0" bus="BUS-204" connectableBus="BUS-204"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-2040" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2040" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2040" v="0.9653" angle="-14.94"/>
             </iidm:busBreakerTopology>
@@ -1738,7 +1738,7 @@
         <iidm:twoWindingsTransformer id="TWT-204-2040" r="2.0E-4" x="0.0020399999999999997" g="0.0" b="-1.2" ratedU1="1.05" ratedU2="1.0" bus1="BUS-204" connectableBus1="BUS-204" voltageLevelId1="VL-204" bus2="BUS-2040" connectableBus2="BUS-2040" voltageLevelId2="VL-2040"/>
     </iidm:substation>
     <iidm:substation id="SUB-95">
-        <iidm:voltageLevel id="VL-205" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-205" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-205" v="0.9838" angle="-26.07"/>
             </iidm:busBreakerTopology>
@@ -1746,7 +1746,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-96">
-        <iidm:voltageLevel id="VL-206" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-206" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-206" v="0.9992" angle="-27.41"/>
             </iidm:busBreakerTopology>
@@ -1754,7 +1754,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-98">
-        <iidm:voltageLevel id="VL-208" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-208" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-208" v="0.9929" angle="-26.28"/>
             </iidm:busBreakerTopology>
@@ -1762,7 +1762,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-99">
-        <iidm:voltageLevel id="VL-213" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-213" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-213" v="1.01" angle="-11.67"/>
             </iidm:busBreakerTopology>
@@ -1770,7 +1770,7 @@
                 <iidm:minMaxReactiveLimits minQ="-150.0" maxQ="150.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-214" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-214" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-214" v="0.9919" angle="-17.53"/>
             </iidm:busBreakerTopology>
@@ -1779,7 +1779,7 @@
         <iidm:twoWindingsTransformer id="TWT-213-214" r="2.5E-5" x="3.8E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-213" connectableBus1="BUS-213" voltageLevelId1="VL-213" bus2="BUS-214" connectableBus2="BUS-214" voltageLevelId2="VL-214"/>
     </iidm:substation>
     <iidm:substation id="SUB-100">
-        <iidm:voltageLevel id="VL-215" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-215" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-215" v="0.9866" angle="-20.23"/>
             </iidm:busBreakerTopology>
@@ -1787,7 +1787,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-101">
-        <iidm:voltageLevel id="VL-216" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-216" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-216" v="0.9751" angle="-22.53"/>
             </iidm:busBreakerTopology>
@@ -1795,7 +1795,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-102">
-        <iidm:voltageLevel id="VL-217" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-217" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-217" v="1.0215" angle="-22.2"/>
             </iidm:busBreakerTopology>
@@ -1803,13 +1803,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-103">
-        <iidm:voltageLevel id="VL-218" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-218" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-218" v="1.0075" angle="-22.63"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-218" loadType="UNDEFINED" p0="131.0" q0="96.0" bus="BUS-218" connectableBus="BUS-218"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-219" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-219" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-219" v="1.0554" angle="-21.15"/>
             </iidm:busBreakerTopology>
@@ -1817,7 +1817,7 @@
         <iidm:twoWindingsTransformer id="TWT-218-219" r="1.0E-5" x="3.5400000000000004E-4" g="0.0" b="-1.0" ratedU1="0.97" ratedU2="1.0" bus1="BUS-218" connectableBus1="BUS-218" voltageLevelId1="VL-218" bus2="BUS-219" connectableBus2="BUS-219" voltageLevelId2="VL-219"/>
     </iidm:substation>
     <iidm:substation id="SUB-118">
-        <iidm:voltageLevel id="VL-220" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-220" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-220" v="1.008" angle="-21.73"/>
             </iidm:busBreakerTopology>
@@ -1828,7 +1828,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-120">
-        <iidm:voltageLevel id="VL-221" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-221" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-221" v="1.0" angle="-22.49"/>
             </iidm:busBreakerTopology>
@@ -1839,7 +1839,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-121">
-        <iidm:voltageLevel id="VL-222" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-222" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-222" v="1.05" angle="-23.17"/>
             </iidm:busBreakerTopology>
@@ -1848,12 +1848,12 @@
             </iidm:generator>
             <iidm:load id="LOAD-222" loadType="UNDEFINED" p0="328.0" q0="188.0" bus="BUS-222" connectableBus="BUS-222"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-237" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-237" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-237" v="1.0558" angle="-21.1"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-241" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-241" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-241" v="1.05" angle="-16.5"/>
             </iidm:busBreakerTopology>
@@ -1865,13 +1865,13 @@
         <iidm:twoWindingsTransformer id="TWT-241-237" r="5.0E-6" x="1.54E-4" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-241" connectableBus1="BUS-241" voltageLevelId1="VL-241" bus2="BUS-237" connectableBus2="BUS-237" voltageLevelId2="VL-237"/>
     </iidm:substation>
     <iidm:substation id="SUB-112">
-        <iidm:voltageLevel id="VL-223" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-223" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-223" v="0.9965" angle="-22.7"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-223" loadType="UNDEFINED" p0="428.0" q0="232.0" bus="BUS-223" connectableBus="BUS-223"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-224" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-224" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-224" v="1.0002" angle="-21.55"/>
             </iidm:busBreakerTopology>
@@ -1880,7 +1880,7 @@
         <iidm:twoWindingsTransformer id="TWT-223-224" r="1.1999999999999999E-5" x="1.95E-4" g="0.0" b="-36.4" ratedU1="1.0" ratedU2="1.0" bus1="BUS-223" connectableBus1="BUS-223" voltageLevelId1="VL-223" bus2="BUS-224" connectableBus2="BUS-224" voltageLevelId2="VL-224"/>
     </iidm:substation>
     <iidm:substation id="SUB-115">
-        <iidm:voltageLevel id="VL-225" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-225" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-225" v="0.9453" angle="-11.34"/>
             </iidm:busBreakerTopology>
@@ -1888,14 +1888,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-117">
-        <iidm:voltageLevel id="VL-226" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-226" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-226" v="1.018" angle="-21.61"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-122">
-        <iidm:voltageLevel id="VL-227" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-227" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-227" v="1.0" angle="-27.22"/>
             </iidm:busBreakerTopology>
@@ -1904,7 +1904,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-227" loadType="UNDEFINED" p0="538.0" q0="369.0" bus="BUS-227" connectableBus="BUS-227"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-231" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-231" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-231" v="1.0535" angle="-21.22"/>
             </iidm:busBreakerTopology>
@@ -1916,7 +1916,7 @@
         <iidm:twoWindingsTransformer id="TWT-227-231" r="9.0E-6" x="4.72E-4" g="0.0" b="18.599999999999998" ratedU1="1.0" ratedU2="1.0" bus1="BUS-227" connectableBus1="BUS-227" voltageLevelId1="VL-227" bus2="BUS-231" connectableBus2="BUS-231" voltageLevelId2="VL-231"/>
     </iidm:substation>
     <iidm:substation id="SUB-124">
-        <iidm:voltageLevel id="VL-228" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-228" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-228" v="1.0423" angle="-20.94"/>
             </iidm:busBreakerTopology>
@@ -1924,13 +1924,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-126">
-        <iidm:voltageLevel id="VL-229" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-229" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-229" v="1.0496" angle="-19.94"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-229" loadType="UNDEFINED" p0="96.0" q0="46.0" bus="BUS-229" connectableBus="BUS-229"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-230" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-230" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-230" v="1.04" angle="-13.82"/>
             </iidm:busBreakerTopology>
@@ -1941,7 +1941,7 @@
         <iidm:twoWindingsTransformer id="TWT-229-230" r="1.0E-5" x="3.32E-4" g="0.0" b="0.0" ratedU1="1.02" ratedU2="1.0" bus1="BUS-229" connectableBus1="BUS-229" voltageLevelId1="VL-229" bus2="BUS-230" connectableBus2="BUS-230" voltageLevelId2="VL-230"/>
     </iidm:substation>
     <iidm:substation id="SUB-134">
-        <iidm:voltageLevel id="VL-232" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-232" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-232" v="1.0414" angle="-23.19"/>
             </iidm:busBreakerTopology>
@@ -1949,7 +1949,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-136">
-        <iidm:voltageLevel id="VL-233" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-233" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-233" v="1.0" angle="-25.9"/>
             </iidm:busBreakerTopology>
@@ -1960,13 +1960,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-130">
-        <iidm:voltageLevel id="VL-234" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-234" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-234" v="1.0387" angle="-20.89"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-234" loadType="UNDEFINED" p0="572.0" q0="244.0" bus="BUS-234" connectableBus="BUS-234"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-236" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-236" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-236" v="1.0165" angle="-15.4"/>
             </iidm:busBreakerTopology>
@@ -1977,7 +1977,7 @@
         <iidm:twoWindingsTransformer id="TWT-234-236" r="5.0E-6" x="1.6E-4" g="0.0" b="0.0" ratedU1="1.07" ratedU2="1.0" bus1="BUS-234" connectableBus1="BUS-234" voltageLevelId1="VL-234" bus2="BUS-236" connectableBus2="BUS-236" voltageLevelId2="VL-236"/>
     </iidm:substation>
     <iidm:substation id="SUB-131">
-        <iidm:voltageLevel id="VL-235" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-235" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-235" v="1.0095" angle="-21.03"/>
             </iidm:busBreakerTopology>
@@ -1985,7 +1985,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-138">
-        <iidm:voltageLevel id="VL-238" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-238" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-238" v="1.01" angle="-20.94"/>
             </iidm:busBreakerTopology>
@@ -1997,7 +1997,7 @@
                 <iidm:shuntLinearModel bPerSection="-150.0" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-239" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-239" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-239" v="1.0" angle="-15.86"/>
             </iidm:busBreakerTopology>
@@ -2008,7 +2008,7 @@
         <iidm:twoWindingsTransformer id="TWT-238-239" r="5.0E-6" x="1.6E-4" g="0.0" b="0.0" ratedU1="1.02" ratedU2="1.0" bus1="BUS-238" connectableBus1="BUS-238" voltageLevelId1="VL-238" bus2="BUS-239" connectableBus2="BUS-239" voltageLevelId2="VL-239"/>
     </iidm:substation>
     <iidm:substation id="SUB-151">
-        <iidm:voltageLevel id="VL-240" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-240" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-240" v="1.0237" angle="-20.14"/>
             </iidm:busBreakerTopology>
@@ -2018,7 +2018,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-159">
-        <iidm:voltageLevel id="VL-242" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-242" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-242" v="0.993" angle="-17.53"/>
             </iidm:busBreakerTopology>
@@ -2028,7 +2028,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-161">
-        <iidm:voltageLevel id="VL-243" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-243" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-243" v="1.01" angle="-19.27"/>
             </iidm:busBreakerTopology>
@@ -2039,14 +2039,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-163">
-        <iidm:voltageLevel id="VL-244" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-244" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-244" v="0.9921" angle="-20.21"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-153">
-        <iidm:voltageLevel id="VL-245" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-245" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-245" v="0.9711" angle="-20.9"/>
             </iidm:busBreakerTopology>
@@ -2054,7 +2054,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-155">
-        <iidm:voltageLevel id="VL-246" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-246" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-246" v="0.9651" angle="-21.74"/>
             </iidm:busBreakerTopology>
@@ -2062,7 +2062,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-157">
-        <iidm:voltageLevel id="VL-247" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-247" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-247" v="0.9688" angle="-21.67"/>
             </iidm:busBreakerTopology>
@@ -2070,7 +2070,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-165">
-        <iidm:voltageLevel id="VL-249" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-249" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-249" v="0.9752" angle="-25.65"/>
             </iidm:busBreakerTopology>
@@ -2078,7 +2078,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-171">
-        <iidm:voltageLevel id="VL-250" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-250" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-250" v="1.0196" angle="-23.8"/>
             </iidm:busBreakerTopology>
@@ -2086,7 +2086,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-281" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-281" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-281" v="1.0251" angle="-20.06"/>
             </iidm:busBreakerTopology>
@@ -2094,7 +2094,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-82">
-        <iidm:voltageLevel id="VL-319" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-319" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-319" v="1.0152" angle="1.48"/>
             </iidm:busBreakerTopology>
@@ -2102,7 +2102,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-92">
-        <iidm:voltageLevel id="VL-320" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-320" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-320" v="1.0146" angle="-2.23"/>
             </iidm:busBreakerTopology>
@@ -2110,7 +2110,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-88">
-        <iidm:voltageLevel id="VL-322" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-322" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-322" v="1.0005" angle="-17.61"/>
             </iidm:busBreakerTopology>
@@ -2118,7 +2118,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-89">
-        <iidm:voltageLevel id="VL-323" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-323" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-323" v="0.981" angle="-13.69"/>
             </iidm:busBreakerTopology>
@@ -2126,7 +2126,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-91">
-        <iidm:voltageLevel id="VL-324" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-324" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-324" v="0.975" angle="-23.42"/>
             </iidm:busBreakerTopology>
@@ -2134,7 +2134,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-72">
-        <iidm:voltageLevel id="VL-526" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-526" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-526" v="0.9429" angle="-34.31"/>
             </iidm:busBreakerTopology>
@@ -2142,7 +2142,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-71">
-        <iidm:voltageLevel id="VL-528" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-528" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-528" v="0.9723" angle="-37.58"/>
             </iidm:busBreakerTopology>
@@ -2150,7 +2150,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-74">
-        <iidm:voltageLevel id="VL-531" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-531" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-531" v="0.9604" angle="-29.1"/>
             </iidm:busBreakerTopology>
@@ -2158,7 +2158,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-81">
-        <iidm:voltageLevel id="VL-552" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-552" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-552" v="1.0009" angle="-23.36"/>
             </iidm:busBreakerTopology>
@@ -2166,7 +2166,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-94">
-        <iidm:voltageLevel id="VL-562" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-562" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-562" v="0.9777" angle="-28.0"/>
             </iidm:busBreakerTopology>
@@ -2174,7 +2174,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-27">
-        <iidm:voltageLevel id="VL-609" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-609" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-609" v="0.9583" angle="-28.79"/>
             </iidm:busBreakerTopology>
@@ -2182,7 +2182,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-79">
-        <iidm:voltageLevel id="VL-664" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-664" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-664" v="1.0309" angle="-17.0"/>
             </iidm:busBreakerTopology>
@@ -2190,14 +2190,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-83">
-        <iidm:voltageLevel id="VL-1201" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1201" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1201" v="1.0122" angle="-15.18"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-145">
-        <iidm:voltageLevel id="VL-9002" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9002" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9002" v="0.9945" angle="-18.86"/>
             </iidm:busBreakerTopology>
@@ -2206,7 +2206,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-9002" loadType="UNDEFINED" p0="4.2" q0="0.0" bus="BUS-9002" connectableBus="BUS-9002"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9024" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9024" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9024" v="0.9706" angle="-21.43"/>
             </iidm:busBreakerTopology>
@@ -2215,7 +2215,7 @@
         <iidm:twoWindingsTransformer id="TWT-9002-9024" r="0.005074800000000001" x="0.032202" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-9002" connectableBus1="BUS-9002" voltageLevelId1="VL-9002" bus2="BUS-9024" connectableBus2="BUS-9024" voltageLevelId2="VL-9024"/>
     </iidm:substation>
     <iidm:substation id="SUB-147">
-        <iidm:voltageLevel id="VL-9003" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9003" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9003" v="0.9833" angle="-19.68"/>
             </iidm:busBreakerTopology>
@@ -2224,25 +2224,25 @@
                 <iidm:shuntLinearModel bPerSection="2.4" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9031" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9031" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9031" v="0.9318" angle="-25.03"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9031" loadType="UNDEFINED" p0="1.84" q0="0.64" bus="BUS-9031" connectableBus="BUS-9031"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9032" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9032" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9032" v="0.9441" angle="-23.84"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9032" loadType="UNDEFINED" p0="1.39" q0="0.48" bus="BUS-9032" connectableBus="BUS-9032"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9033" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9033" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9033" v="0.9286" angle="-25.33"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9033" loadType="UNDEFINED" p0="1.89" q0="0.65" bus="BUS-9033" connectableBus="BUS-9033"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9034" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9034" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9034" v="0.9973" angle="-21.1"/>
             </iidm:busBreakerTopology>
@@ -2251,25 +2251,25 @@
                 <iidm:shuntLinearModel bPerSection="1.72" maximumSectionCount="1"/>
             </iidm:shunt>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9035" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9035" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9035" v="0.9506" angle="-23.19"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9035" loadType="UNDEFINED" p0="1.66" q0="0.58" bus="BUS-9035" connectableBus="BUS-9035"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9036" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9036" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9036" v="0.9598" angle="-22.67"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9036" loadType="UNDEFINED" p0="3.03" q0="1.0" bus="BUS-9036" connectableBus="BUS-9036"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9037" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9037" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9037" v="0.957" angle="-22.58"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9037" loadType="UNDEFINED" p0="1.86" q0="0.64" bus="BUS-9037" connectableBus="BUS-9037"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9038" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9038" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9038" v="0.9391" angle="-24.41"/>
             </iidm:busBreakerTopology>
@@ -2285,25 +2285,25 @@
         <iidm:twoWindingsTransformer id="TWT-9003-9038" r="0.004412" x="0.029668" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-9003" connectableBus1="BUS-9003" voltageLevelId1="VL-9003" bus2="BUS-9038" connectableBus2="BUS-9038" voltageLevelId2="VL-9038"/>
     </iidm:substation>
     <iidm:substation id="SUB-85">
-        <iidm:voltageLevel id="VL-9004" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9004" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9004" v="0.9768" angle="-19.82"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9004" loadType="UNDEFINED" p0="0.86" q0="0.28" bus="BUS-9004" connectableBus="BUS-9004"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9041" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9041" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9041" v="0.9636" angle="-21.33"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9041" loadType="UNDEFINED" p0="1.01" q0="0.35" bus="BUS-9041" connectableBus="BUS-9041"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9042" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9042" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9042" v="0.9501" angle="-22.5"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9042" loadType="UNDEFINED" p0="0.81" q0="0.28" bus="BUS-9042" connectableBus="BUS-9042"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9043" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9043" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9043" v="0.9646" angle="-21.42"/>
             </iidm:busBreakerTopology>
@@ -2314,12 +2314,12 @@
         <iidm:twoWindingsTransformer id="TWT-9004-9043" r="0.001567" x="0.016994000000000002" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-9004" connectableBus1="BUS-9004" voltageLevelId1="VL-9004" bus2="BUS-9043" connectableBus2="BUS-9043" voltageLevelId2="VL-9043"/>
     </iidm:substation>
     <iidm:substation id="SUB-73">
-        <iidm:voltageLevel id="VL-9005" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9005" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9005" v="1.0117" angle="-11.32"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9051" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9051" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9051" v="1.0" angle="-19.4"/>
             </iidm:busBreakerTopology>
@@ -2328,13 +2328,13 @@
             </iidm:generator>
             <iidm:load id="LOAD-9051" loadType="UNDEFINED" p0="35.81" q0="0.0" bus="BUS-9051" connectableBus="BUS-9051"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9052" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9052" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9052" v="0.9786" angle="-17.25"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9052" loadType="UNDEFINED" p0="30.0" q0="23.0" bus="BUS-9052" connectableBus="BUS-9052"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9053" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9053" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9053" v="1.0" angle="-17.68"/>
             </iidm:busBreakerTopology>
@@ -2343,7 +2343,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-9053" loadType="UNDEFINED" p0="26.48" q0="0.0" bus="BUS-9053" connectableBus="BUS-9053"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9054" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9054" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9054" v="1.0" angle="-6.83"/>
             </iidm:busBreakerTopology>
@@ -2351,7 +2351,7 @@
                 <iidm:minMaxReactiveLimits minQ="-38.0" maxQ="38.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9055" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9055" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9055" v="1.0" angle="-7.54"/>
             </iidm:busBreakerTopology>
@@ -2359,7 +2359,7 @@
                 <iidm:minMaxReactiveLimits minQ="-6.0" maxQ="6.0"/>
             </iidm:generator>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9533" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9533" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9533" v="1.0402" angle="-18.24"/>
             </iidm:busBreakerTopology>
@@ -2373,18 +2373,18 @@
         <iidm:twoWindingsTransformer id="TWT-9053-9533" r="0.0" x="0.0075" g="0.0" b="0.0" ratedU1="0.9583" ratedU2="1.0" bus1="BUS-9053" connectableBus1="BUS-9053" voltageLevelId1="VL-9053" bus2="BUS-9533" connectableBus2="BUS-9533" voltageLevelId2="VL-9533"/>
     </iidm:substation>
     <iidm:substation id="SUB-128">
-        <iidm:voltageLevel id="VL-9007" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9007" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9007" v="0.9913" angle="-18.69"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9071" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9071" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9071" v="0.9752" angle="-20.48"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9071" loadType="UNDEFINED" p0="1.02" q0="0.35" bus="BUS-9071" connectableBus="BUS-9071"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9072" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9072" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9072" v="0.9803" angle="-19.92"/>
             </iidm:busBreakerTopology>
@@ -2394,13 +2394,13 @@
         <iidm:twoWindingsTransformer id="TWT-9007-9072" r="0.0030792000000000003" x="0.02057" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-9007" connectableBus1="BUS-9007" voltageLevelId1="VL-9007" bus2="BUS-9072" connectableBus2="BUS-9072" voltageLevelId2="VL-9072"/>
     </iidm:substation>
     <iidm:substation id="SUB-184">
-        <iidm:voltageLevel id="VL-9021" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9021" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9021" v="0.9887" angle="-19.09"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9021" loadType="UNDEFINED" p0="4.75" q0="1.56" bus="BUS-9021" connectableBus="BUS-9021"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9022" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9022" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9022" v="0.9648" angle="-21.67"/>
             </iidm:busBreakerTopology>
@@ -2409,18 +2409,18 @@
         <iidm:twoWindingsTransformer id="TWT-9021-9022" r="0.0044364" x="0.028152" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-9021" connectableBus1="BUS-9021" voltageLevelId1="VL-9021" bus2="BUS-9022" connectableBus2="BUS-9022" voltageLevelId2="VL-9022"/>
     </iidm:substation>
     <iidm:substation id="SUB-183">
-        <iidm:voltageLevel id="VL-9023" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9023" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9023" v="0.9747" angle="-19.41"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9025" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9025" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9025" v="0.9649" angle="-20.48"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-9025" loadType="UNDEFINED" p0="0.45" q0="0.16" bus="BUS-9025" connectableBus="BUS-9025"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-9026" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9026" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9026" v="0.9657" angle="-20.39"/>
             </iidm:busBreakerTopology>
@@ -2430,14 +2430,14 @@
         <iidm:twoWindingsTransformer id="TWT-9023-9026" r="0.0061129999999999995" x="0.036152000000000004" g="0.0" b="0.0" ratedU1="1.0" ratedU2="1.0" bus1="BUS-9023" connectableBus1="BUS-9023" voltageLevelId1="VL-9023" bus2="BUS-9026" connectableBus2="BUS-9026" voltageLevelId2="VL-9026"/>
     </iidm:substation>
     <iidm:substation id="SUB-86">
-        <iidm:voltageLevel id="VL-9044" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9044" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9044" v="0.979" angle="-19.78"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-152">
-        <iidm:voltageLevel id="VL-9121" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9121" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9121" v="0.9799" angle="-19.3"/>
             </iidm:busBreakerTopology>
diff --git a/matpower/matpower-converter/src/test/resources/ieee57.xiidm b/matpower/matpower-converter/src/test/resources/ieee57.xiidm
index 559869ee2b9..d8d58537d76 100644
--- a/matpower/matpower-converter/src/test/resources/ieee57.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee57.xiidm
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee57" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-39">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="1.04" angle="0.0"/>
             </iidm:busBreakerTopology>
@@ -12,7 +12,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-40">
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="1.01" angle="-1.18"/>
             </iidm:busBreakerTopology>
@@ -23,7 +23,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-41">
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="0.985" angle="-5.97"/>
             </iidm:busBreakerTopology>
@@ -34,12 +34,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-20">
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="0.981" angle="-7.32"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-18" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-18" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-18" v="1.001" angle="-11.71"/>
             </iidm:busBreakerTopology>
@@ -52,7 +52,7 @@
         <iidm:twoWindingsTransformer id="TWT-4-18#0" r="0.0" x="0.0043" g="0.0" b="0.0" ratedU1="0.978" ratedU2="1.0" bus1="BUS-4" connectableBus1="BUS-4" voltageLevelId1="VL-4" bus2="BUS-18" connectableBus2="BUS-18" voltageLevelId2="VL-18"/>
     </iidm:substation>
     <iidm:substation id="SUB-42">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="0.976" angle="-8.52"/>
             </iidm:busBreakerTopology>
@@ -60,7 +60,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-43">
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="0.98" angle="-8.65"/>
             </iidm:busBreakerTopology>
@@ -71,12 +71,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-24">
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="0.984" angle="-7.58"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-29" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-29" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-29" v="1.01" angle="-9.75"/>
             </iidm:busBreakerTopology>
@@ -85,7 +85,7 @@
         <iidm:twoWindingsTransformer id="TWT-7-29" r="0.0" x="6.48E-4" g="0.0" b="0.0" ratedU1="0.967" ratedU2="1.0" bus1="BUS-7" connectableBus1="BUS-7" voltageLevelId1="VL-7" bus2="BUS-29" connectableBus2="BUS-29" voltageLevelId2="VL-29"/>
     </iidm:substation>
     <iidm:substation id="SUB-26">
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.005" angle="-4.45"/>
             </iidm:busBreakerTopology>
@@ -96,7 +96,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-25">
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="0.98" angle="-9.56"/>
             </iidm:busBreakerTopology>
@@ -105,7 +105,7 @@
             </iidm:generator>
             <iidm:load id="LOAD-9" loadType="UNDEFINED" p0="121.0" q0="26.0" bus="BUS-9" connectableBus="BUS-9"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-55" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-55" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-55" v="1.031" angle="-10.78"/>
             </iidm:busBreakerTopology>
@@ -114,13 +114,13 @@
         <iidm:twoWindingsTransformer id="TWT-9-55" r="0.0" x="0.001205" g="0.0" b="0.0" ratedU1="0.94" ratedU2="1.0" bus1="BUS-9" connectableBus1="BUS-9" voltageLevelId1="VL-9" bus2="BUS-55" connectableBus2="BUS-55" voltageLevelId2="VL-55"/>
     </iidm:substation>
     <iidm:substation id="SUB-27">
-        <iidm:voltageLevel id="VL-10" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-10" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-10" v="0.986" angle="-11.43"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-10" loadType="UNDEFINED" p0="5.0" q0="2.0" bus="BUS-10" connectableBus="BUS-10"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-51" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-51" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-51" v="1.052" angle="-12.52"/>
             </iidm:busBreakerTopology>
@@ -129,18 +129,18 @@
         <iidm:twoWindingsTransformer id="TWT-10-51" r="0.0" x="7.12E-4" g="0.0" b="0.0" ratedU1="0.93" ratedU2="1.0" bus1="BUS-10" connectableBus1="BUS-10" voltageLevelId1="VL-10" bus2="BUS-51" connectableBus2="BUS-51" voltageLevelId2="VL-51"/>
     </iidm:substation>
     <iidm:substation id="SUB-16">
-        <iidm:voltageLevel id="VL-11" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-11" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-11" v="0.974" angle="-10.17"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-41" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-41" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-41" v="0.996" angle="-14.05"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-41" loadType="UNDEFINED" p0="6.3" q0="3.0" bus="BUS-41" connectableBus="BUS-41"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-43" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-43" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-43" v="1.01" angle="-11.33"/>
             </iidm:busBreakerTopology>
@@ -150,7 +150,7 @@
         <iidm:twoWindingsTransformer id="TWT-11-43" r="0.0" x="0.0015300000000000001" g="0.0" b="0.0" ratedU1="0.958" ratedU2="1.0" bus1="BUS-11" connectableBus1="BUS-11" voltageLevelId1="VL-11" bus2="BUS-43" connectableBus2="BUS-43" voltageLevelId2="VL-43"/>
     </iidm:substation>
     <iidm:substation id="SUB-23">
-        <iidm:voltageLevel id="VL-12" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-12" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-12" v="1.015" angle="-10.46"/>
             </iidm:busBreakerTopology>
@@ -161,13 +161,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-10">
-        <iidm:voltageLevel id="VL-13" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-13" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-13" v="0.979" angle="-9.79"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-13" loadType="UNDEFINED" p0="18.0" q0="2.3" bus="BUS-13" connectableBus="BUS-13"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-49" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-49" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-49" v="1.036" angle="-12.92"/>
             </iidm:busBreakerTopology>
@@ -176,13 +176,13 @@
         <iidm:twoWindingsTransformer id="TWT-13-49" r="0.0" x="0.00191" g="0.0" b="0.0" ratedU1="0.895" ratedU2="1.0" bus1="BUS-13" connectableBus1="BUS-13" voltageLevelId1="VL-13" bus2="BUS-49" connectableBus2="BUS-49" voltageLevelId2="VL-49"/>
     </iidm:substation>
     <iidm:substation id="SUB-13">
-        <iidm:voltageLevel id="VL-14" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-14" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-14" v="0.97" angle="-9.33"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-14" loadType="UNDEFINED" p0="10.5" q0="5.3" bus="BUS-14" connectableBus="BUS-14"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-46" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-46" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-46" v="1.05" angle="-11.89"/>
             </iidm:busBreakerTopology>
@@ -190,13 +190,13 @@
         <iidm:twoWindingsTransformer id="TWT-14-46" r="0.0" x="7.35E-4" g="0.0" b="0.0" ratedU1="0.9" ratedU2="1.0" bus1="BUS-14" connectableBus1="BUS-14" voltageLevelId1="VL-14" bus2="BUS-46" connectableBus2="BUS-46" voltageLevelId2="VL-46"/>
     </iidm:substation>
     <iidm:substation id="SUB-14">
-        <iidm:voltageLevel id="VL-15" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-15" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-15" v="0.988" angle="-7.18"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-15" loadType="UNDEFINED" p0="22.0" q0="5.0" bus="BUS-15" connectableBus="BUS-15"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-45" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-45" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-45" v="1.036" angle="-9.25"/>
             </iidm:busBreakerTopology>
@@ -204,7 +204,7 @@
         <iidm:twoWindingsTransformer id="TWT-15-45" r="0.0" x="0.001042" g="0.0" b="0.0" ratedU1="0.955" ratedU2="1.0" bus1="BUS-15" connectableBus1="BUS-15" voltageLevelId1="VL-15" bus2="BUS-45" connectableBus2="BUS-45" voltageLevelId2="VL-45"/>
     </iidm:substation>
     <iidm:substation id="SUB-22">
-        <iidm:voltageLevel id="VL-16" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-16" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-16" v="1.013" angle="-8.85"/>
             </iidm:busBreakerTopology>
@@ -212,7 +212,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-21">
-        <iidm:voltageLevel id="VL-17" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-17" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-17" v="1.017" angle="-5.39"/>
             </iidm:busBreakerTopology>
@@ -220,7 +220,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-19">
-        <iidm:voltageLevel id="VL-19" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-19" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-19" v="0.97" angle="-13.2"/>
             </iidm:busBreakerTopology>
@@ -228,13 +228,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-38">
-        <iidm:voltageLevel id="VL-20" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-20" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-20" v="0.964" angle="-13.41"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-20" loadType="UNDEFINED" p0="2.3" q0="1.0" bus="BUS-20" connectableBus="BUS-20"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-21" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-21" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-21" v="1.008" angle="-12.89"/>
             </iidm:busBreakerTopology>
@@ -242,14 +242,14 @@
         <iidm:twoWindingsTransformer id="TWT-21-20" r="0.0" x="0.007767" g="0.0" b="0.0" ratedU1="1.043" ratedU2="1.0" bus1="BUS-21" connectableBus1="BUS-21" voltageLevelId1="VL-21" bus2="BUS-20" connectableBus2="BUS-20" voltageLevelId2="VL-20"/>
     </iidm:substation>
     <iidm:substation id="SUB-37">
-        <iidm:voltageLevel id="VL-22" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-22" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-22" v="1.01" angle="-12.84"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-36">
-        <iidm:voltageLevel id="VL-23" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-23" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-23" v="1.008" angle="-12.91"/>
             </iidm:busBreakerTopology>
@@ -257,12 +257,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-34">
-        <iidm:voltageLevel id="VL-24" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-24" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-24" v="0.999" angle="-13.25"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-26" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-26" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-26" v="0.959" angle="-12.95"/>
             </iidm:busBreakerTopology>
@@ -270,7 +270,7 @@
         <iidm:twoWindingsTransformer id="TWT-24-26" r="0.0" x="4.73E-4" g="0.0" b="0.0" ratedU1="1.043" ratedU2="1.0" bus1="BUS-24" connectableBus1="BUS-24" voltageLevelId1="VL-24" bus2="BUS-26" connectableBus2="BUS-26" voltageLevelId2="VL-26"/>
     </iidm:substation>
     <iidm:substation id="SUB-35">
-        <iidm:voltageLevel id="VL-25" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-25" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-25" v="0.982" angle="-18.13"/>
             </iidm:busBreakerTopology>
@@ -281,7 +281,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-33">
-        <iidm:voltageLevel id="VL-27" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-27" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-27" v="0.982" angle="-11.48"/>
             </iidm:busBreakerTopology>
@@ -289,7 +289,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-32">
-        <iidm:voltageLevel id="VL-28" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-28" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-28" v="0.997" angle="-10.45"/>
             </iidm:busBreakerTopology>
@@ -297,7 +297,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-30" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-30" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-30" v="0.962" angle="-18.68"/>
             </iidm:busBreakerTopology>
@@ -305,7 +305,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-31" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-31" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-31" v="0.936" angle="-19.34"/>
             </iidm:busBreakerTopology>
@@ -313,13 +313,13 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-32" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-32" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-32" v="0.949" angle="-18.46"/>
             </iidm:busBreakerTopology>
             <iidm:load id="LOAD-32" loadType="UNDEFINED" p0="1.6" q0="0.8" bus="BUS-32" connectableBus="BUS-32"/>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-34" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-34" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-34" v="0.959" angle="-14.1"/>
             </iidm:busBreakerTopology>
@@ -327,7 +327,7 @@
         <iidm:twoWindingsTransformer id="TWT-34-32" r="0.0" x="0.00953" g="0.0" b="0.0" ratedU1="0.975" ratedU2="1.0" bus1="BUS-34" connectableBus1="BUS-34" voltageLevelId1="VL-34" bus2="BUS-32" connectableBus2="BUS-32" voltageLevelId2="VL-32"/>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-33" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-33" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-33" v="0.947" angle="-18.5"/>
             </iidm:busBreakerTopology>
@@ -335,7 +335,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-35" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-35" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-35" v="0.966" angle="-13.86"/>
             </iidm:busBreakerTopology>
@@ -343,21 +343,21 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-36" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-36" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-36" v="0.976" angle="-13.59"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-37" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-37" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-37" v="0.985" angle="-13.41"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-38" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-38" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-38" v="1.013" angle="-12.71"/>
             </iidm:busBreakerTopology>
@@ -365,12 +365,12 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-39" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-39" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-39" v="0.983" angle="-13.46"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-57" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-57" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-57" v="0.965" angle="-16.56"/>
             </iidm:busBreakerTopology>
@@ -379,12 +379,12 @@
         <iidm:twoWindingsTransformer id="TWT-39-57" r="0.0" x="0.01355" g="0.0" b="0.0" ratedU1="0.98" ratedU2="1.0" bus1="BUS-39" connectableBus1="BUS-39" voltageLevelId1="VL-39" bus2="BUS-57" connectableBus2="BUS-57" voltageLevelId2="VL-57"/>
     </iidm:substation>
     <iidm:substation id="SUB-18">
-        <iidm:voltageLevel id="VL-40" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-40" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-40" v="0.973" angle="-13.62"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
-        <iidm:voltageLevel id="VL-56" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-56" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-56" v="0.968" angle="-16.04"/>
             </iidm:busBreakerTopology>
@@ -393,7 +393,7 @@
         <iidm:twoWindingsTransformer id="TWT-40-56" r="0.0" x="0.01195" g="0.0" b="0.0" ratedU1="0.958" ratedU2="1.0" bus1="BUS-40" connectableBus1="BUS-40" voltageLevelId1="VL-40" bus2="BUS-56" connectableBus2="BUS-56" voltageLevelId2="VL-56"/>
     </iidm:substation>
     <iidm:substation id="SUB-17">
-        <iidm:voltageLevel id="VL-42" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-42" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-42" v="0.966" angle="-15.5"/>
             </iidm:busBreakerTopology>
@@ -401,7 +401,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-15">
-        <iidm:voltageLevel id="VL-44" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-44" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-44" v="1.017" angle="-11.86"/>
             </iidm:busBreakerTopology>
@@ -409,7 +409,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-12">
-        <iidm:voltageLevel id="VL-47" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-47" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-47" v="1.033" angle="-12.49"/>
             </iidm:busBreakerTopology>
@@ -417,14 +417,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-11">
-        <iidm:voltageLevel id="VL-48" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-48" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-48" v="1.027" angle="-12.59"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-31">
-        <iidm:voltageLevel id="VL-50" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-50" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-50" v="1.023" angle="-13.39"/>
             </iidm:busBreakerTopology>
@@ -432,7 +432,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-30">
-        <iidm:voltageLevel id="VL-52" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-52" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-52" v="0.98" angle="-11.47"/>
             </iidm:busBreakerTopology>
@@ -440,7 +440,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-29">
-        <iidm:voltageLevel id="VL-53" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-53" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-53" v="0.971" angle="-12.23"/>
             </iidm:busBreakerTopology>
@@ -451,7 +451,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-28">
-        <iidm:voltageLevel id="VL-54" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-54" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-54" v="0.996" angle="-11.69"/>
             </iidm:busBreakerTopology>
diff --git a/matpower/matpower-converter/src/test/resources/ieee9.xiidm b/matpower/matpower-converter/src/test/resources/ieee9.xiidm
index 76baf2dfc87..3fcdd465b2d 100644
--- a/matpower/matpower-converter/src/test/resources/ieee9.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee9.xiidm
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee9" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="1.04" angle="0.0"/>
             </iidm:busBreakerTopology>
@@ -11,7 +11,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="1.025" angle="9.28"/>
             </iidm:busBreakerTopology>
@@ -21,7 +21,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="1.025" angle="4.6647"/>
             </iidm:busBreakerTopology>
@@ -31,14 +31,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="1.025" angle="-2.216"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="0.995" angle="-3.988"/>
             </iidm:busBreakerTopology>
@@ -46,7 +46,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="1.012" angle="-3.687"/>
             </iidm:busBreakerTopology>
@@ -54,14 +54,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="1.025" angle="3.7197"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.015" angle="0.7275"/>
             </iidm:busBreakerTopology>
@@ -69,7 +69,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="1.032" angle="1.9667"/>
             </iidm:busBreakerTopology>
diff --git a/matpower/matpower-converter/src/test/resources/ieee9_limits.xiidm b/matpower/matpower-converter/src/test/resources/ieee9_limits.xiidm
index 47da0fd1dfd..4f6b990f69a 100644
--- a/matpower/matpower-converter/src/test/resources/ieee9_limits.xiidm
+++ b/matpower/matpower-converter/src/test/resources/ieee9_limits.xiidm
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_7" xmlns:slt="http://www.powsybl.org/schema/iidm/ext/slack_terminal/1_4" id="ieee9_limits" caseDate="2020-01-01T00:00:00.000Z" forecastDistance="0" sourceFormat="MATPOWER" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
     <iidm:substation id="SUB-1">
-        <iidm:voltageLevel id="VL-1" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-1" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-1" v="1.04" angle="0.0"/>
             </iidm:busBreakerTopology>
@@ -11,7 +11,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-2">
-        <iidm:voltageLevel id="VL-2" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-2" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-2" v="1.025" angle="9.28"/>
             </iidm:busBreakerTopology>
@@ -21,7 +21,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-3">
-        <iidm:voltageLevel id="VL-3" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-3" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-3" v="1.025" angle="4.6647"/>
             </iidm:busBreakerTopology>
@@ -31,14 +31,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-4">
-        <iidm:voltageLevel id="VL-4" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-4" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-4" v="1.025" angle="-2.216"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-5">
-        <iidm:voltageLevel id="VL-5" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-5" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-5" v="0.995" angle="-3.988"/>
             </iidm:busBreakerTopology>
@@ -46,7 +46,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-6">
-        <iidm:voltageLevel id="VL-6" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-6" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-6" v="1.012" angle="-3.687"/>
             </iidm:busBreakerTopology>
@@ -54,14 +54,14 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-7">
-        <iidm:voltageLevel id="VL-7" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-7" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-7" v="1.025" angle="3.7197"/>
             </iidm:busBreakerTopology>
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-8">
-        <iidm:voltageLevel id="VL-8" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-8" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-8" v="1.015" angle="0.7275"/>
             </iidm:busBreakerTopology>
@@ -69,7 +69,7 @@
         </iidm:voltageLevel>
     </iidm:substation>
     <iidm:substation id="SUB-9">
-        <iidm:voltageLevel id="VL-9" nominalV="1.0" topologyKind="BUS_BREAKER">
+        <iidm:voltageLevel id="VL-9" nominalV="1.0" lowVoltageLimit="0.94" highVoltageLimit="1.06" topologyKind="BUS_BREAKER">
             <iidm:busBreakerTopology>
                 <iidm:bus id="BUS-9" v="1.032" angle="1.9667"/>
             </iidm:busBreakerTopology>