AC network insulation monitor ISOMETER® IR123P

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. Features Insulation monitoring for unearthed AC systems (IT systems) 100…300 V Automatic adaptation to the existing system leakage capacitance Optimised measurement technique for low-frequency control processes Electrically isolated PWM output for the kΩ measuring value Optocoupler output for signalling the device status Automatic device self test Certonal coating Permanently set response value for the insulation resistance 23/46 kΩ Second response range 40/80 kΩ selectable via a jumper Applications Monitoring of unearthed AC systems (IT systems) in mobile generators