
Technical data isoCHA425HV
Insulation coordination acc. to IEC 60664-1/IEC 60664-3
Rated voltage.................................................................................240 V
Overvoltage category ..........................................................................III
Supply voltage
Supply voltage Us................................. AC 100…240 V/ DC 24…240 V
Tolerance of Us.................................................................−30…+15 %
Frequency range Us...............................................................47…63 Hz
Power consumption.........................................................≤ 3 W, ≤ 9 VA
Monitored IT system
Nominal system voltage Un with AGH..............................DC 0…1000 V
Tolerance of Un.............................................................................+10 %
Nominal system voltage Unwith AGH (UL 508) .................DC 0…600 V
Response values
Response value Ran1 ..........................................Ran2…600 kΩ (600 kΩ)*
Response value Ran2 ............................................. 5 kΩ…Ran1 (120 kΩ)*
Hysteresis Ran ......................................................................25 %, >1 kΩ
Undervoltage detection U<...................................... 10…1090 V (off)*
Overvoltage detection U>........................................ 11…1100 V (off)*
Overvoltage detection U>....................1200 V (cannot be switched off)
Hysteresis U............................................................................5 %, >5 V
Measuring
Measuring range..................................................................DC ±1200 V
Display range................................... 0 V…1.2 kV (Measuring trueRMS)
Operating uncertainty and relative uncertainty..............± 5 %, > ±5 V
Mode CCS (dc)
Permissible system leakage capacitance Ce.................................≤ 20 µF
Permissible system leakage capacitance Ce(UL 2231-1/-2)........≤ 10 µF
Measurement uncertainty RF/ relative uncertainty Ran
Ce≤ 5 μF...................................................................±15 %, ±2 kΩ
Ce≥5 μF und RF> 100 kΩ .............±(5 % × Ran / 100 kΩ + 10 %)
Measuring and display range Ce.........................................0…35 µF
Measurement uncertainty Ce
RF< 10 kΩ.............................................................no measurement
RF≥ 10 kΩ.............................................................. ±15 %, ±0.1 µF
Response time tan
Ran = 2.0 × RFand Ce= 1 µF acc. to IEC 61557-8...................≤ 10 s
Ran = 2.0 × RFand Ce≤ 5 μF or RF≤ 100 kΩ...........................≤ 10 s
Mode CHAdeMO (CHd and CHA)
System voltage Un.......................... Measuring mode from Un≥ DC 50 V
Permissible system leakage capacitance Ce.........per conductor ≤ 1.6 µF
One-pole fault RFU
Measuring and display range and RFU ............................1 kΩ ... 2 MΩ
Measurement uncertainty RFU / relative uncertainty Ran
Un≥ 100 V and RFU ≤ 200 kΩ....................................±15 %, ±2 kΩ
Un> 200 V................................................................±15 %, ±2 kΩ
Technische Daten isoCHA425HV
Isolationskoordination nach IEC 60664-1/IEC 60664-3
Bemessungsspannung ..................................................................240 V
Überspannungskategorie ....................................................................III
Versorgungsspannung
Versorgungsspannung Us.................... .AC 100…240 V/ DC 24…240 V
Toleranz von Us................................................................−30…+15 %
Frequenzbereich Us...............................................................47…63 Hz
Eigenverbrauch................................................................≤ 3 W, ≤ 9 VA
Überwachtes IT-System
Netznennspannung Un mit AGH.......................................DC 0…1000 V
Toleranz von Un............................................................................+10 %
Netznennspannung Unmit AGH (UL 508) ..........................DC 0…600 V
Ansprechwerte
Ansprechwert Ran1.............................................Ran2…600 kΩ (600 kΩ)*
Ansprechwert Ran2................................................ 5 kΩ…Ran1 (120 kΩ)*
Hysterese Ran ......................................................................25 %, >1 kΩ
Unterspannungserkennung U<................................ 10…1090 V (off)*
Überspannungserkennung U>................................. 11…1100 V (off)*
Überlasterkennung U>................................. 1200 V (nicht abschaltbar)
Hysterese U............................................................................5 %, >5 V
Messbereich
Messbereich.........................................................................DC ±1200 V
Anzeigebereich...................................0 V…1,2 kV (Messung trueRMS)
Mess- und Ansprechunsicherheit.....................................±5 %, > ±5 V
Modus CCS (dc)
Zulässige Netzableitkapazität Ce.................................................≤ 20 µF
Zulässige Netzableitkapazität Ce (UL 2231-1/-2).........................≤ 10 µF
Messunsicherheit RF/ Ansprechunsicherheit Ran
Ce≤ 5 μF...................................................................±15 %, ±2 kΩ
Ce≥5 μF und RF> 100 kΩ .............±(5 % × Ran / 100 kΩ + 10 %)
Mess- und Anzeigebereich Ce............................................. 0…35 µF
Messunsicherheit Ce
RF< 10 kΩ.................................................................keine Messung
RF≥ 10 kΩ.............................................................. ±15 %, ±0,1 µF
Ansprechzeit tan
Ran = 2,0 × RFund Ce= 1 µF nach IEC 61557-8......................≤ 10 s
Ran = 2,0 × RFund Ce≤ 5 μF oder RF≤ 100 kΩ ..........................≤ 10 s
Modus CHAdeMO (CHd und CHA)
Netzspannung Un...................................... Messbetrieb ab Un≥ DC 50 V
Zulässige Netzableitkapazität Ce..................................je Leiter ≤ 1,6 µF
Einpoliger Fehler RFU
Mess- und Anzeigebereich RFU .......................................1 kΩ ... 2 MΩ
Messunsicherheit RFU / Ansprechunsicherheit Ran
Un≥ 100 V und RFU ≤ 200 kΩ ...................................±15 %, ±2 kΩ
Un> 200 V................................................................±15 %, ±2 kΩ
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ISOMETER® isoCHA425HV + AGH420-1/AGH421-1