Flyer Insulation monitor LK 5895 / LK 58960 pages

VARIMETER IMD
Insulation Monitor LK 5895 / LK 5896
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With the new Insulation Monitors LK 5895 and LK 5896 from the VARIMETER IMD

family, DOLD offers a convincing solution for insulation monitoring of non-earthed AC, AC/
DC, and DC power supplies (IT systems). The devices increase the availability of plants and
are used for preventive maintenance and repair. Faults are detected even during operation
and costly plant standstills are prevented. The insulation monitors were specially designed
for use in modern power supplies that often include rectifiers, converters, thyristor controllers or directly connected DC components. EMC interference suppression with its leakage
capacitances against earth plays an important role in this matter. The two insulation monitors meet these requirements.
Besides a faster fault localisation by selective earth fault detection and optimised measuring times, the insulation monitors can deal with system leakage capacitances of up to
3000 µF. They are also universally applicable in non-earthed DC/AC and mixed networks
from 0 V to 1000 V nominal voltage. The maximum voltage is up to DC 1500 V and
AC 1100 V without additional adaption device. An additional measurement circuit allows
simultaneous monitoring of an AC network which is galvanically isolated from the main
measurement circuit. Universal analogue outputs for the insulation resistance output
complete the device's functionality.

Advantages and customer benefit
t Preventive fire and plant protection
t Early insulation fault detection during operation
t No additional adaption device needed
t Fast error localisation via selective earth fault detection to L+ and Lt Suitable for universal application in non-earthed DC/AC and mixed networks
t Suitable for large-scale system leakage capacitances up to 3000 μF
t Simple adjustment via latching rotary switches
t Reliable monitoring, also in voltage-free network
t LK 5896 with additional measurement circuit

Our experience.Your safety.