diff --git a/lib/HanReader/src/Kamstrup.h b/lib/HanReader/src/Kamstrup.h
index 7cb3470e..ef7db21b 100644
--- a/lib/HanReader/src/Kamstrup.h
+++ b/lib/HanReader/src/Kamstrup.h
@@ -5,10 +5,12 @@
 
 enum class Kamstrup
 {
+	List1PhaseShort = 0x11,
+	List1PhaseLong  = 0x1B,
 	List3PhaseShort = 0x19,
 	List3PhaseLong  = 0x23,
-	List1PhaseShort = 0x11,
-	List1PhaseLong  = 0x1B
+	List3PhaseITShort = 0x17,
+	List3PhaseITLong  = 0x21
 };
 
 enum class Kamstrup_List3Phase
@@ -83,5 +85,43 @@ enum class Kamstrup_List1Phase
 	CumulativeReactiveExportEnergy
 };
 
+enum class Kamstrup_List3PhaseIT
+{
+	ListSize,
+	ListVersionIdentifier,
+	MeterID_OBIS,
+	MeterID,
+	MeterType_OBIS,
+	MeterType,
+	ActiveImportPower_OBIS,
+	ActiveImportPower,
+	ActiveExportPower_OBIS,
+	ActiveExportPower,
+	ReactiveImportPower_OBIS,
+	ReactiveImportPower,
+	ReactiveExportPower_OBIS,
+	ReactiveExportPower,
+	CurrentL1_OBIS,
+	CurrentL1,
+	CurrentL3_OBIS,
+	CurrentL3,
+	VoltageL1_OBIS,
+	VoltageL1,
+	VoltageL2_OBIS,
+	VoltageL2,
+	VoltageL3_OBIS,
+	VoltageL3,
+	MeterClock_OBIS,
+	MeterClock,
+	CumulativeActiveImportEnergy_OBIS,
+	CumulativeActiveImportEnergy,
+	CumulativeActiveExportEnergy_OBIS,
+	CumulativeActiveExportEnergy,
+	CumulativeReactiveImportEnergy_OBIS,
+	CumulativeReactiveImportEnergy,
+	CumulativeReactiveExportEnergy_OBIS,
+	CumulativeReactiveExportEnergy
+};
+
 #endif
 
diff --git a/src/AmsData.cpp b/src/AmsData.cpp
index 7d6c6d47..4e209569 100644
--- a/src/AmsData.cpp
+++ b/src/AmsData.cpp
@@ -18,7 +18,7 @@ AmsData::AmsData(int meterType, bool substituteMissing, HanReader& hanReader) {
 			extractFromAidon(hanReader, listSize, substituteMissing);
             break;
 		case METER_TYPE_KAMSTRUP:
-			extractFromKamstrup(hanReader, listSize);
+			extractFromKamstrup(hanReader, listSize, substituteMissing);
             break;
 
     }
@@ -176,13 +176,15 @@ void AmsData::extractFromAidon(HanReader& hanReader, int listSize, bool substitu
     }
 }
 
-void AmsData::extractFromKamstrup(HanReader& hanReader, int listSize) {
+void AmsData::extractFromKamstrup(HanReader& hanReader, int listSize, bool substituteMissing) {
     switch(listSize) {
+        case (int)Kamstrup::List3PhaseITShort:
         case (int)Kamstrup::List3PhaseShort:
             threePhase = true;
         case (int)Kamstrup::List1PhaseShort:
             listType = 2;
             break;
+        case (int)Kamstrup::List3PhaseITLong:
         case (int)Kamstrup::List3PhaseLong:
             threePhase = true;
         case (int)Kamstrup::List1PhaseLong:
@@ -191,6 +193,23 @@ void AmsData::extractFromKamstrup(HanReader& hanReader, int listSize) {
     }
 
     switch(listSize) {
+        case (int)Kamstrup::List1PhaseLong:
+            meterTimestamp        = hanReader.getTime(         (int)Kamstrup_List1Phase::MeterClock);
+            activeImportCounter   = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeActiveImportEnergy)) / 100;
+            activeExportCounter   = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeActiveExportEnergy)) / 100;
+            reactiveImportCounter = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeReactiveImportEnergy)) / 100;
+            reactiveExportCounter = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeReactiveExportEnergy)) / 100;
+        case (int)Kamstrup::List1PhaseShort:
+            listId                = hanReader.getString(       (int)Kamstrup_List1Phase::ListVersionIdentifier);
+            meterId               = hanReader.getString(       (int)Kamstrup_List1Phase::MeterID);
+            meterType             = hanReader.getString(       (int)Kamstrup_List1Phase::MeterType);
+            activeImportPower     = hanReader.getInt(          (int)Kamstrup_List1Phase::ActiveImportPower);
+            reactiveImportPower   = hanReader.getInt(          (int)Kamstrup_List1Phase::ReactiveImportPower);
+            activeExportPower     = hanReader.getInt(          (int)Kamstrup_List1Phase::ActiveExportPower);
+            reactiveExportPower   = hanReader.getInt(          (int)Kamstrup_List1Phase::ReactiveExportPower);
+            l1current             = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CurrentL1)) / 100;
+            l1voltage             = hanReader.getInt(          (int)Kamstrup_List1Phase::VoltageL1);
+            break;
         case (int)Kamstrup::List3PhaseLong:
             meterTimestamp        = hanReader.getTime(         (int)Kamstrup_List3Phase::MeterClock);
             activeImportCounter   = ((double) hanReader.getInt((int)Kamstrup_List3Phase::CumulativeActiveImportEnergy)) / 100;
@@ -212,22 +231,29 @@ void AmsData::extractFromKamstrup(HanReader& hanReader, int listSize) {
             l2voltage             = hanReader.getInt(          (int)Kamstrup_List3Phase::VoltageL2);
             l3voltage             = hanReader.getInt(          (int)Kamstrup_List3Phase::VoltageL3);
             break;
-        case (int)Kamstrup::List1PhaseLong:
-            meterTimestamp        = hanReader.getTime(         (int)Kamstrup_List1Phase::MeterClock);
-            activeImportCounter   = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeActiveImportEnergy)) / 100;
-            activeExportCounter   = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeActiveExportEnergy)) / 100;
-            reactiveImportCounter = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeReactiveImportEnergy)) / 100;
-            reactiveExportCounter = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CumulativeReactiveExportEnergy)) / 100;
-        case (int)Kamstrup::List1PhaseShort:
-            listId                = hanReader.getString(       (int)Kamstrup_List1Phase::ListVersionIdentifier);
-            meterId               = hanReader.getString(       (int)Kamstrup_List1Phase::MeterID);
-            meterType             = hanReader.getString(       (int)Kamstrup_List1Phase::MeterType);
-            activeImportPower     = hanReader.getInt(          (int)Kamstrup_List1Phase::ActiveImportPower);
-            reactiveImportPower   = hanReader.getInt(          (int)Kamstrup_List1Phase::ReactiveImportPower);
-            activeExportPower     = hanReader.getInt(          (int)Kamstrup_List1Phase::ActiveExportPower);
-            reactiveExportPower   = hanReader.getInt(          (int)Kamstrup_List1Phase::ReactiveExportPower);
-            l1current             = ((double) hanReader.getInt((int)Kamstrup_List1Phase::CurrentL1)) / 100;
-            l1voltage             = hanReader.getInt(          (int)Kamstrup_List1Phase::VoltageL1);
+        case (int)Kamstrup::List3PhaseITLong:
+            meterTimestamp        = hanReader.getTime(         (int)Kamstrup_List3Phase::MeterClock);
+            activeImportCounter   = ((double) hanReader.getInt((int)Kamstrup_List3Phase::CumulativeActiveImportEnergy)) / 100;
+            activeExportCounter   = ((double) hanReader.getInt((int)Kamstrup_List3Phase::CumulativeActiveExportEnergy)) / 100;
+            reactiveImportCounter = ((double) hanReader.getInt((int)Kamstrup_List3Phase::CumulativeReactiveImportEnergy)) / 100;
+            reactiveExportCounter = ((double) hanReader.getInt((int)Kamstrup_List3Phase::CumulativeReactiveExportEnergy)) / 100;
+        case (int)Kamstrup::List3PhaseITShort:
+            listId                = hanReader.getString(       (int)Kamstrup_List3Phase::ListVersionIdentifier);
+            meterId               = hanReader.getString(       (int)Kamstrup_List3Phase::MeterID);
+            meterType             = hanReader.getString(       (int)Kamstrup_List3Phase::MeterType);
+            activeImportPower     = hanReader.getInt(          (int)Kamstrup_List3Phase::ActiveImportPower);
+            reactiveImportPower   = hanReader.getInt(          (int)Kamstrup_List3Phase::ReactiveImportPower);
+            activeExportPower     = hanReader.getInt(          (int)Kamstrup_List3Phase::ActiveExportPower);
+            reactiveExportPower   = hanReader.getInt(          (int)Kamstrup_List3Phase::ReactiveExportPower);
+            l1current             = ((double) hanReader.getInt((int)Kamstrup_List3Phase::CurrentL1)) / 100;
+            l2current             = 0;
+            l3current             = ((double) hanReader.getInt((int)Kamstrup_List3Phase::CurrentL3)) / 100;
+            l1voltage             = hanReader.getInt(          (int)Kamstrup_List3Phase::VoltageL1);
+            l2voltage             = hanReader.getInt(          (int)Kamstrup_List3Phase::VoltageL2);
+            l3voltage             = hanReader.getInt(          (int)Kamstrup_List3Phase::VoltageL3);
+            if(substituteMissing) {
+                l2current         = ((activeImportPower * sqrt(3)) - (l1voltage * l1current) - (l3voltage * l3current)) / l2voltage;
+            }
             break;
     }
 }
diff --git a/src/AmsData.h b/src/AmsData.h
index 1e078d8d..409cd2f2 100644
--- a/src/AmsData.h
+++ b/src/AmsData.h
@@ -61,7 +61,7 @@ class AmsData {
 
     void extractFromKaifa(HanReader& hanReader, int listSize);
     void extractFromAidon(HanReader& hanReader, int listSize, bool substituteMissing);
-    void extractFromKamstrup(HanReader& hanReader, int listSize);
+    void extractFromKamstrup(HanReader& hanReader, int listSize, bool substituteMissing);
 };
 
 #endif
diff --git a/web/application.js b/web/application.js
index 4cbf4133..89eefe18 100644
--- a/web/application.js
+++ b/web/application.js
@@ -59,7 +59,7 @@ $(function() {
     // For config-meter
     $('.subtitute-dependent').on('change', function() {
         console.log("test");
-        if($('#meterType').val() == 2 && $('#distributionSystem').val() == 1) {
+        if(($('#meterType').val() == 2 || $('#meterType').val() == 3) && $('#distributionSystem').val() == 1) {
             $('#substitute').show();
         } else {
             $('#substitute').hide();