Produkte

Innovative technologies for safe handling of electrical power to achieve high availability

We offer you first-class quality and safety combined with global service and every support in resolving your monitoring problems.

  • Electrical safety for unearthed power supplies (IT systems)
  • Insulation monitoring equipment, insulation fault location systems
  • Power supplies for medical applications
  • Measuring and monitoring relays
  • Electrical safety for earthed power supplies (TN systems)
  • Using renewable energies efficiently: wind power, photovoltaics
  • Test systems for electrical equipment and medical technology
ISOMETER® IRDH575

ISOMETER® IRDH575

  • Insulation monitoring device for AC and DC IT systems
  • Application main circuits with connected frequency converters
  • Isometer disconnecting relay for the operation of several ISOMETER®s in interconnected IT systems
  • Display and control function for EDS insulation fault location systems
  • Can be extended to operate as equipment for insulation fault location

- This device series is in the discontinuation phase. -
Deliverable according to availability until 31.12.2023.

Features

  • Universal application in 3(N)AC, AC/DC and DC IT systems 20…575 V/340…760 V
  • Response range 1 kΩ…10 MΩ
  • Info button for the indication of various parameters and the system leakage capacitance
  • Comprehensive self-monitoring function including system fault alarm relay
  • Internal/external test and reset button
  • Two separate alarm relays, N/C or N/O operation selectable
  • Backlit plain text display 4 x 16 characters
  • RS-485 interface
  • Data memory, disconnection from supply and 0/4…20 mA current output
  • Can be extended to an insulation fault location system for max.1080 circuits
  • Adjustable locating current for insulation fault location
  • Appropriate for EDS4… insulation fault location systems
  • AMP measurement method

Applications

  • Insulation resistance monitoring in IT systems
  • Localisation of insulation faults with additional insulation fault locators EDS4…

Downloads for ISOMETER® IRDH575

CategoryNameSizeLanguageTimestampD-/B-Number
Handbücher IRDH575 1.1 MB ES13.05.2019 10:31:54D00089
Handbücher IRDH575 2.0 MB FR13.05.2019 10:31:54D00089
Handbücher IRDH575 5.4 MB DE09.06.2022 10:46:19D00089
Handbücher IRDH575 5.1 MB EN09.06.2022 10:48:10D00089

Optional accessories for ISOMETER® IRDH575

Protection against dust and moisture

TypeDimensionsArt. No.
Panel sealing, degree of protection IP42144 x 96 mmB98060006
Transparent cover, degree of protection IP65144 x 96 mmB98060007


Adaptor for rail mounting

TypeArt. No.
Adaptor for rail mountingB98060010

The adaptor allows fast mounting of the IRDH575 on a DIN rail according to IEC 60715.


Measuring instruments

TypeMeasuring rangeDimensionsArt. No.
9620-14210…20 mA96 x 96 mmB986841
9620S-14210…20 mA96 x 96 mmB986842

ISOMETER® IRDH575 Variants

TypeNominal system voltage UnSupply voltage USArt. No.
IRDH575B1-427AC / DC 20…575 VDC 19.2…72 VB91065502
IRDH575B1-4353(N)AC / DC 20…575 V*AC 88…264 V / DC 77…286 V*B91065500
IRDH575B1-4227**3(N)AC / DC 20…150 V*DC 19.2…72 V*B91065505
IRDH575B1-4235AC / DC 20…150 VAC 88…264 V / DC 77…286 VB91065504
IRDH575B2-4273(N)AC 340…760 V / DC 340…575V*DC 19.2…72 VB91065506
IRDH575B2-4353(N)AC 340…760 V / DC 340…575 V*AC 88…264 V / DC 77…286 V*B91065503

* Absolute values
** Measuring voltage Um 10 V