Insulation Monitoring Relay
EKRA-IMS-IMR-02

IMR-02 is used to monitor the level of insulation resistance of DC networks with voltages of 220, 110 V.

Features of IMR-02:

Front view

IMR-02 relay is manufactured in a metal enclosure with wires connection from the back side.

Front panel of the IMR-02 relay contains:

Connection scheme for IMR-02 relay

Patent for invention

Insulation monitoring relay is protected by a patent for invention of the Russian Federation No.2381513

No maloperation of relay protection devices

Do not cause maloperation of relay protection devices due to the low level of voltage imbalance

Universal use and convenience

Detection of asymmetrical and symmetrical reduction in insulation. All measurements are carried out without disconnecting consumers from the network

Compatibility

Compatible with equivalent standard T-bridge insulation resistance monitoring circuit

Specification	Value
Rated DC power supply voltage, V	24
Rated voltage of monitored DC network, V	220	110
Operating range of voltages for monitored DC network of measurement circuits, V	175 – 245	85 – 125
Maximum capacity of monitored network relative to ground, µF, max.	200
Number of settings for insulation resistance of network poles relative to ground	2
Range of settings for insulation resistance of network poles relative to ground, kOhm	10 – 500	5 – 250
Maximum internal resistance between terminals of each pole of insulation resistance monitoring relay and “ground”, kOhm	30
Error of operation setting, %, max.	±10
Readiness time, s, max.	10

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Insulation Monitoring RelayEKRA-IMS-IMR-02