diff --git a/network-area-diagram/src/test/java/com/powsybl/nad/AbstractTest.java b/network-area-diagram/src/test/java/com/powsybl/nad/AbstractTest.java
index 4a6f3025d..accb00cf9 100644
--- a/network-area-diagram/src/test/java/com/powsybl/nad/AbstractTest.java
+++ b/network-area-diagram/src/test/java/com/powsybl/nad/AbstractTest.java
@@ -32,7 +32,7 @@
  */
 public abstract class AbstractTest {
 
-    protected boolean debugSvg = false;
+    protected boolean debugSvg = true;
     protected boolean overrideTestReferences = false;
 
     private SvgParameters svgParameters;
diff --git a/single-line-diagram/single-line-diagram-core/src/main/java/com/powsybl/sld/svg/styles/iidm/HighlightLineStateStyleProvider.java b/single-line-diagram/single-line-diagram-core/src/main/java/com/powsybl/sld/svg/styles/iidm/HighlightLineStateStyleProvider.java
index 624d72085..bfe65914f 100644
--- a/single-line-diagram/single-line-diagram-core/src/main/java/com/powsybl/sld/svg/styles/iidm/HighlightLineStateStyleProvider.java
+++ b/single-line-diagram/single-line-diagram-core/src/main/java/com/powsybl/sld/svg/styles/iidm/HighlightLineStateStyleProvider.java
@@ -52,7 +52,8 @@ public List<String> getNodeStyles(VoltageLevelGraph graph, Node node, ComponentL
             return List.of(StyleClassConstants.BUS_DISCONNECTED);
         }
 
-        if (node instanceof EquipmentNode equipmentNode && equipmentNode.isOverloaded()) {
+//        if (node instanceof EquipmentNode equipmentNode && equipmentNode.isOverloaded()) {
+        if (node.isOverloaded()) {
             return List.of(StyleClassConstants.OVERLOAD_STYLE_CLASS);
         }
         return Collections.emptyList();
diff --git a/single-line-diagram/single-line-diagram-core/src/main/resources/animations.css b/single-line-diagram/single-line-diagram-core/src/main/resources/animations.css
index 40aa1643f..c1da64468 100644
--- a/single-line-diagram/single-line-diagram-core/src/main/resources/animations.css
+++ b/single-line-diagram/single-line-diagram-core/src/main/resources/animations.css
@@ -45,5 +45,5 @@
 }
 
 .sld-overload {
-  animation: sld-overload-blink 3s infinite;
+  animation: sld-overload-blink-animation 3s infinite;
 }
diff --git a/single-line-diagram/single-line-diagram-core/src/test/resources/Test3WTFeederInfoOverLoad.svg b/single-line-diagram/single-line-diagram-core/src/test/resources/Test3WTFeederInfoOverLoad.svg
index 55388c5f1..b7c8d5d0b 100644
--- a/single-line-diagram/single-line-diagram-core/src/test/resources/Test3WTFeederInfoOverLoad.svg
+++ b/single-line-diagram/single-line-diagram-core/src/test/resources/Test3WTFeederInfoOverLoad.svg
@@ -226,10 +226,10 @@
                 <polygon class="sld-arrow-in" points="0,0 10,0 5,10"/>
                 <text class="sld-label" x="15.0" y="5.0">-400</text>
             </g>
-            <g class="sld-bus-connection sld-fictitious sld-overload sld-vl120to180-0" id="idBUSCO_95_BUS_95_132_95_3WT" transform="translate(136.0,248.0)">
+            <g class="sld-bus-connection sld-fictitious sld-vl120to180-0 sld-overload" id="idBUSCO_95_BUS_95_132_95_3WT" transform="translate(136.0,248.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
-            <g class="sld-node sld-hidden-node sld-fictitious sld-overload sld-vl120to180-0" id="idINTERNAL_95_VL_95_132_95_BUSCO_95_BUS_95_132_95_3WT_45_3WT" transform="translate(136.0,218.0)">
+            <g class="sld-node sld-hidden-node sld-fictitious sld-vl120to180-0 sld-overload" id="idINTERNAL_95_VL_95_132_95_BUSCO_95_BUS_95_132_95_3WT_45_3WT" transform="translate(136.0,218.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
             <g class="sld-three-wt sld-fictitious sld-overload" id="id3WT" transform="translate(132.0,130.0)">
@@ -237,10 +237,10 @@
                 <circle class="sld-vl0to30-0 sld-winding" cx="11" cy="15" r="5"/>
                 <circle class="sld-vl120to180-0 sld-winding" cx="8" cy="19" r="5"/>
             </g>
-            <g class="sld-top-feeder sld-overload sld-vl120to180-0" id="id3WT_95_TWO" transform="translate(115.0,80.0)">
+            <g class="sld-top-feeder sld-vl120to180-0 sld-overload" id="id3WT_95_TWO" transform="translate(115.0,80.0)">
                 <text class="sld-label" id="3WT_TWO_N_LABEL" x="-5.0" y="-5.0">3WT</text>
             </g>
-            <g class="sld-top-feeder sld-overload sld-vl120to180-0" id="id3WT_95_THREE" transform="translate(165.0,80.0)">
+            <g class="sld-top-feeder sld-vl120to180-0 sld-overload" id="id3WT_95_THREE" transform="translate(165.0,80.0)">
                 <text class="sld-label" id="3WT_THREE_N_LABEL" x="-5.0" y="-5.0">3WT</text>
             </g>
         </g>
diff --git a/single-line-diagram/single-line-diagram-core/src/test/resources/TestAnimatedFeederInfos.svg b/single-line-diagram/single-line-diagram-core/src/test/resources/TestAnimatedFeederInfos.svg
index 3526cba81..a93c20a53 100644
--- a/single-line-diagram/single-line-diagram-core/src/test/resources/TestAnimatedFeederInfos.svg
+++ b/single-line-diagram/single-line-diagram-core/src/test/resources/TestAnimatedFeederInfos.svg
@@ -133,7 +133,7 @@
 }
 
 .sld-overload {
-  animation: sld-overload-blink 3s infinite;
+  animation: sld-overload-blink-animation 3s infinite;
 }
 /* ----------------------------------------------------------------------- */
 /* File : components.css ------------------------------------------------- */
diff --git a/single-line-diagram/single-line-diagram-core/src/test/resources/TestLineFeederInfoOverLoad.svg b/single-line-diagram/single-line-diagram-core/src/test/resources/TestLineFeederInfoOverLoad.svg
index 266333cb2..76e642602 100644
--- a/single-line-diagram/single-line-diagram-core/src/test/resources/TestLineFeederInfoOverLoad.svg
+++ b/single-line-diagram/single-line-diagram-core/src/test/resources/TestLineFeederInfoOverLoad.svg
@@ -177,13 +177,13 @@
                 <polygon class="sld-arrow-in" points="0,0 10,0 5,10"/>
                 <text class="sld-label" x="15.0" y="5.0">150</text>
             </g>
-            <g class="sld-bus-connection sld-fictitious sld-overload sld-vl300to500-0" id="idBUSCO_95_Bus1_95_Line_95_ONE" transform="translate(61.0,248.0)">
+            <g class="sld-bus-connection sld-fictitious sld-vl300to500-0 sld-overload" id="idBUSCO_95_Bus1_95_Line_95_ONE" transform="translate(61.0,248.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
             <g class="sld-node sld-hidden-node sld-fictitious sld-vl300to500-0" id="idINTERNAL_95_VoltageLevel1_95_BUSCO_95_Bus1_95_Line_95_ONE_45_Line_95_ONE" transform="translate(61.0,218.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
-            <g class="sld-node sld-hidden-node sld-fictitious sld-overload sld-vl300to500-0" id="idINTERNAL_95_VoltageLevel1_95_Line_95_ONE" transform="translate(61.0,138.0)">
+            <g class="sld-node sld-hidden-node sld-fictitious sld-vl300to500-0 sld-overload" id="idINTERNAL_95_VoltageLevel1_95_Line_95_ONE" transform="translate(61.0,138.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
             <g class="sld-top-feeder sld-overload" id="idLine_95_ONE" transform="translate(65.0,80.0)">
diff --git a/single-line-diagram/single-line-diagram-core/src/test/resources/TestTransformerFeederInfoOverLoad.svg b/single-line-diagram/single-line-diagram-core/src/test/resources/TestTransformerFeederInfoOverLoad.svg
index 09f3b3645..7ff3d8d88 100644
--- a/single-line-diagram/single-line-diagram-core/src/test/resources/TestTransformerFeederInfoOverLoad.svg
+++ b/single-line-diagram/single-line-diagram-core/src/test/resources/TestTransformerFeederInfoOverLoad.svg
@@ -177,13 +177,13 @@
                 <polygon class="sld-arrow-in" points="0,0 10,0 5,10"/>
                 <text class="sld-label" x="15.0" y="5.0">—</text>
             </g>
-            <g class="sld-bus-connection sld-fictitious sld-overload sld-vl300to500-0" id="idBUSCO_95_Bus1_95_Transformer_95_ONE" transform="translate(61.0,248.0)">
+            <g class="sld-bus-connection sld-fictitious sld-vl300to500-0 sld-overload" id="idBUSCO_95_Bus1_95_Transformer_95_ONE" transform="translate(61.0,248.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
             <g class="sld-node sld-hidden-node sld-fictitious sld-vl300to500-0" id="idINTERNAL_95_VoltageLevel1_95_BUSCO_95_Bus1_95_Transformer_95_ONE_45_Transformer_95_ONE" transform="translate(61.0,218.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
-            <g class="sld-node sld-hidden-node sld-fictitious sld-overload sld-vl300to500-0" id="idINTERNAL_95_VoltageLevel1_95_Transformer_95_ONE" transform="translate(61.0,138.0)">
+            <g class="sld-node sld-hidden-node sld-fictitious sld-vl300to500-0 sld-overload" id="idINTERNAL_95_VoltageLevel1_95_Transformer_95_ONE" transform="translate(61.0,138.0)">
                 <circle cx="4" cy="4" r="4"/>
             </g>
             <g class="sld-two-wt sld-top-feeder sld-overload" id="idTransformer_95_ONE" transform="translate(60.0,72.5)">