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Relays

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Powerforce ERDPL Earth Leakage relay operates on core balance principle wherein the currents in the three phase of the system are summed by a core balance C.T. which for normal conditions equates to zero. In case of a leakage current to earth this balance is disturbed causing the electronic circuit to operate a relay within the unit. In this the relay that is generally connected to circuit breaker operates thus tripping the main circuit. The electro mechanical relay operates on fault. The Earth Leakage Relay is provided with a TEST push button for checking its operation and a RESET button to reset the relay. This helps in checking the proper functioning of the relay. External (remote) TEST and RESET connections is also be provided.

 

FEATURES

  • Microcontroller based design (Cortex M3 Microprocessor 72MHZ)

  • 16 character 2 line LCD display

  • Continuous displays of the set current and time delay and actual leakage current.

  • Real Time Monotoring.

  • Wide range of leakage setting from 30 mA to 8 Amps

  • Continuous monitoring of CBCT connection, TRIPS when disconnected

  • Test and Reset for checking functioning of relay

  • Remote TEST and RESET connectors provided

  • Current measurement using True RMS values

  • Easy and user friendly procedure of setting the Leakage current and time delay

  • Option of relay resetting only after pressing of RESET button (on rectification of fault)

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