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Thu Jul 27 10:49:08 2017
Thu Jul 27 10:49:08 2017
ISOMETER® isoRW425

ISOMETER® isoRW425

  • Insulation monitoring device for AC and DC IT systems
  • Application control circuits in railway vehicles according to EN 50155
  • Insulation impedance measurement (Z mode) for 50 Hz or 60 Hz
  • Automatic adaptation to the system leakage capacitance up to 300 μF
  • Measurement of the nominal system voltage (RMS) with undervoltage and overvoltage detection

The ISOMETER® isoRW425 monitors the insulation resistance of unearthed AC, AC/DC and DC Systems (IT systems) for railway applications up to AC/DC 0…400 V. DC components existing in AC/DC systems do not influence the operating characteristics. An external supply voltage allows de-energised systems to be monitored too.

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  • Insulation monitoring for unearthed systems AC/DC 0…400 V
  • Measurement of the nominal system voltage with undervoltage and overvoltage detection
  • Measurement of the voltages system to earth (L+/PE and L-/PE)
  • Measurement of the system leakage capacitance
  • BMS interface
  • Information about the point of fault L+/L- via display and relay contacts
  • Automatic adaptation to the system leakage capacitance up to 300 μF
  • Supply voltage range DC 24…240 V/AC 100…240 V
  • Self monitoring with automatic alarm message
  • Mains/earth connection monitoring
  • LEDs: Power On, Alarm 1, Alarm 2
  • Internal and external test/reset button
  • Two alarm relays with single pole (one N/O contact each)
  • N/O or N/C operation selectable
  • Fault memory, selectable
  • Multi-functional LC display
  • Adjustable response delay
  • Compact two-module enclosure (36 mm)
  • Quick wiring by push-wire terminals
  • Adjustable response value for Re and Ze
  • AC control circuits in industry, mechanical engineering, power stations, elevators, automation systems and railway systems in accordance with EN 50155
  • AC control and auxiliary circuits in accordance with DIN EN 60204-1 “Electrical equipment of machines”, IEC 60204-1, EN 60204-1
  • AC auxiliary circuits in accordance with DIN VDE 0100-725
  • Smaller AC IT systems such as lighting systems, mobile generators

 

Optional accessories for ISOMETER® isoRW425


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

Variants of ISOMETER® isoRW425


TypeNominal system voltage* UnSupply voltage* USArt. No.**
isoRW425-D4W-4DC/AC 0…400 V, 10…460 HzDC 24…240 V / AC 100…240 V, 47…63 HzB71037000W
B91037000W
* Absolute values
*(B7… = push-wire terminal / B9… = screw-type terminal)

Downloads for ISOMETER® isoRW425

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