AC network insulation monitor VARIMETER IMD | RN 5897/020

DCAC/DCDIN rail

The insulation monitor RN 5897/020 of the VARIMETER IMD family provides best and up to date insulation monitoring of modern IT systems in an optimum and state of the art way fulfilling the relevant standards. The device can be used in the most flexible way for AC, DC and AC/DC systems. Mains areas of applications are non-earthed DC charging stations for electric vehicles with mains voltages up to DC 1000 V. The adjustment of the setting values is simple and user friendly done on 2 rotary switches on the front of the device. Via display and LEDs the measured value, device parameters and device status are indicated easy to read. With a sealable transparent cover the device is protectet against manipulation. Features • 2 separate adjustable response thresholds (using e.g. for pre-alarm and Alarm) • Setting range of 1st response value (Pre-alarm): 20 kΩ … 500 kΩ • Setting range of 2nd response value (alarm): 1 kΩ … 100 kΩ • 1 changeover contacts each for insulation failures-Pre-alarm and -alarm • Energized or de-energized on trip can be selected for indicator relay • Display for indication of measured value, device parameters and device status • Automatic and manual device self-test • Alarm storage selectable • Protection against manipulation by sealable transparent cover • External control input for combined test- / reset-button with additional Stop of the measuring function • 3 wide voltage input for auxiliary voltage • Width 52.5 mm Advantages / Customer benefit • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23 • Insulation monitoring according to IEC/EN 61557-8 • With connection facility of an external coupling device RL 5898