• Insulation monitoring device for mobile generators
  • Protective separation with insulation monitoring and disconnection
  • According to IEC 60364-5-55 and IEC 61557-8
  • Optocoupler output for signalling the device status
  • Galvanically separated PWM output for the measuring value

The ISOMETER® IR123P monitors the insulation resistance RF of an unearthed AC system of 100…300 V against earth, that is supplied by a mobile generator according to DIN VDE 0100-551. The IR123 is suitable for AC systems with operating frequencies of 22…65 Hz as well as for AC systems including DC components. The maximum permissible system leakage capacitance Cemax is 5 μF.