IMD100 Insulation Monitoring Device

  • Insulation monitoring according to IEC 61557-8
  • Selectable charging modes – CCS or CHAdeMO
  • Compliant with UL 2231-1 and UL 2231-2
  • Suitable for network voltages up to 1000VDC
  • Maximum system leakage capacitance – 25µF
  • Adjustable insulation resistance thresholds – Factory defaults: Alarm 500 kΩ; Fault 100 kΩ
  • Isolated MODBUS RTU connection
  • UL certified

The IMD100 is an insulation monitoring device (IMD) designed to continuously monitor insulation resistance in unearthed (IT) electrical systems, particularly within DC applications such as electric vehicle (EV) fast charging infrastructure using CCS and CHAdeMO standards. By providing early detection of insulation deterioration and earth faults, the IMD100 enables proactive maintenance, reduces unplanned downtime, and enhances system safety. Compliant with IEC 61557-8 and suitable for use in high-voltage DC systems up to 1000V, it plays a critical role in ensuring reliable operation and protection of both equipment and personnel.

  • Monitoring function: Insulation resistance
  • Max. network voltage: 1000VDC
  • Max. system leakage capacitance: 25µF
  • Aux. supply voltage: 12 – 24VDC (Order code: 99-7015)
  • Output: 2 x SPNO – 5A @250V (AC1)
  • Dimensions (mm): W:71.4 x H:90.2 x D:57.4
  • Product standards: IEC 61851-1/BS EN 61851-1, IEC 61557-8/BS EN 61557-8, IEC 61851-23, UL 2231-1, UL 2231-2, IEC 61326-2-4/BS EN 61326-2-4,
Distributors Stock Code Link
Farnell 4825128 Go to product

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IMD125 Insulation Monitoring Device
  • Insulation monitoring according to IEC 61557-8
  • Selectable charging modes – CCS or CHAdeMO
  • Compliant with UL 2231-1 and UL 2231-2
  • Suitable for network voltages up to 1250VDC
  • Maximum system leakage capacitance – 25µF
  • Adjustable insulation resistance thresholds – Fault 125kΩ, Warning 625kΩ
  • Isolated MODBUS RTU or Canbus connection options
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IMD125 Insulation Monitoring Device
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