ISOMETER® isoPV425 with AGH420

  • Ground-fault monitoring device for AC and DC IT systems
  • Application photovoltaic systems up to AC 690 V/DC 1000 V
  • Automatic adaptation to the system leakage capacitance up to 1000 μF
  • Measurement of the nominal system voltage (RMS) with undervoltage and overvoltage detection

The ISOMETER® of the isoPV425 series monitors the insulation resistance of unearthed AC/DC main circuits (IT systems) with nominal voltages of 3(N)AC, AC, AC/DC 0…690 V or DC 0…1000 V.

DC components existing in AC/DC systems do not influence the operating characteristics. A separate supply voltage allows deenergised systems to be monitored as well. The maximum permissible system leakage capacitance is 1000 µF.

Questions? Contact us!

ISOMETER® isoPV425
ISOMETER® isoPV425
  • Ground-fault monitoring device for AC and DC IT systems
  • Application photovoltaic systems up to AC 690 V/DC 1000 V
  • Automatic adaptation to the system leakage capacitance up to 1000 μF
  • Measurement of the nominal system voltage (RMS) with undervoltage and overvoltage detection

The ISOMETER® of the isoPV425 series monitors the insulation resistance of unearthed AC/DC main circuits (IT systems) with nominal voltages of 3(N)AC, AC, AC/DC 0…690 V or DC 0…1000 V.

DC components existing in AC/DC systems do not influence the operating characteristics. A separate supply voltage allows deenergised systems to be monitored as well. The maximum permissible system leakage capacitance is 1000 µF.

Questions? Contact us!

Features

  • Monitoring for unearthed AC and DC systems with galvanically connected rectifiers or inverters
  • Measurement of the nominal system voltage Un (True RMS) with undervoltage and overvoltage detection
  • Measurement of DC voltages system to earth (L+/PE and L-/PE)
  • Automatic adaptation to the system leakage capacitance up to 1000 μF
  • Automatic device self-test with connection monitoring
  • Selectable start-up delay, response delay and delay on release
  • Two separately adjustable response value ranges of 1…500 kΩ (Alarm 1, Alarm 2)
  • Alarm signalling via LEDs (AL1, AL2), a display and alarm relays (K1, K2)
  • N/C operation or N/O operation selectable
  • Measured value indication via multi-functional LCD
  • Fault memory can be activated
  • RS-485 (galvanically isolated) including the following protocols:
    – BMS interface (Bender measuring device interface) for data exchange with other Bender components
    – Modbus RTU
    – isoData (for continuous data output)
  • Password protection to prevent unauthorised parameter changes

Applications

  • AC, DC or AC/DC main circuits
  • Solar systems with directly connected inverters
  • Solar systems with high system leakage capacitances
  • Solar systems with high but slow voltage fluctuations
  • Systems including switched-mode power supplies

ISOMETER® isoPV425 with AGH420 Variant(s)

TypeNominal system voltage* UnSupply voltage* USArt. No.**
isoPV425-D4 with AGH420DC 0…1000 V, AC 0…690 VDC 24…240 V, AC 100…240 VB71036303
B91036303

* Absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)

Optional Accessories for ISOMETER® isoPV425 with AGH420

TypeArt. No.
Mounting clip for screw mounting (one piece per device)B98060008
Mounting frame XM420B990994 

Downloads for ISOMETER® isoPV425 with AGH420

NameCategorySizeLanguageTimestampD-/B-Number
UKCA - AGH Declarations of Conformity 122.7 KB 2023/11/2222.11.2023
AGH420 Manuals 1.5 MB DE2023/10/3131.10.2023D00029
AGH420 Manuals 1.5 MB EN2023/10/3131.10.2023D00029
Erneuerbare Energien: Photovoltaik Market Segment Brochures 2.0 MB DE2023/06/1616.06.2023
UKCA - isoxx425 Declarations of Conformity 142.1 KB 2023/06/1212.06.2023
Renewable energies: Photovoltaics Market Segment Brochures 2.0 MB EN2023/06/1616.06.2023
isoXX425 CE Declarations of Conformity 146.2 KB 2023/07/1414.07.2023
isoPV425 Quickstarts 1.0 MB EN2024/01/3030.01.2024D00028
isoPV425 with AGH420 Manuals 4.2 MB EN2023/08/1515.08.2023D00029
isoPV425 with AGH420 Datasheets 404.9 KB EN2023/05/2626.05.2023D00029
Modbus RTU - Monitor isoxx425 V2.2.2 setup Software 7.1 MB 2019/05/1313.05.2019