ISOMETER® isoEV425 with AGH420

ISOMETER® isoEV425 with AGH420

  • Insulation monitoring device for AC 690 V and DC 1000 V IT systems
  • Monitoring of DC charging stations for electric and hybrid vehicles
  • Settings in accordance with IEC 61851-23
  • Parameter settings by the customer not required

The ISOMETER® of the isoEV425 series monitor the insulation resistance of unearthed DC-charging stations for electric vehicles (IT systems) DC 0…1100 V DC from the charging station to the motor (AC 0…793 V).

Due to a separate supply voltage de-energised systems can also be monitored.

  • Features
  • Applications
  • Accessories
  • Ordering information
  • Downloads
  • Insulation monitoring for DC charging stations (mode 4 according to IEC 61851-1/CD 61851-12) for charging of electric vehicles
  • Nominal system voltage DC 0…1100 V and AC 0…793 V
  • Two factory-set response values
  • Leakage capacitance ≤ 5 μF
  • Continuous monitoring of system/earth connections
  • LEDs: Power On, Alarm 1, Alarm 2
  • Internal test/reset button
  • Two alarm relays with common root (one N/O contact each)
  • N/O or N/C operation, selectable
  • Fault memory behaviour, selectable
  • Self monitoring with automatic alarm
  • Multi-functional LC display
  • RS-485 interface
  • Compact two-module enclosure (36 mm) plus coupling in two-module enclosure
  • Quick wiring by push-wire terminals
  • DC charging stations for electric vehicles according to CD IEC 61851-23


Optional accessories for ISOMETER® isoEV425 with AGH420

TypeArt. No.
Mounting clip for screw mounting (1 piece per device)B98060008

Variants of ISOMETER® isoEV425 with AGH420

TypeSupply voltage USSystem leakage capacitance CeArt. No.*
isoEV425-D4 with AGH420AC 100…240 V, 47…63 Hz / DC 24…240 V≤ 5 μFB71036401
isoEV425HC-D4 with AGH420AC 100…240 V, 47…63 Hz / DC 24…240 V≤ 20 μFB71036397
*(B7… = push-wire terminal / B9… = screw-type terminal)

Downloads for ISOMETER® isoEV425 with AGH420



Category Product Language Date Size Download