Earth Leakage Relay - Manufacturer, Bangalore, India

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Product Code : 01

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Product Specification

This relay is used on AC systems and is a sensitive electronic protective device. Its operation on Earth fault is independent of the system voltage imbalance. This relay can detect Earth fault currents as low as 1 amp. Which is 0.25% in a 400 amps feeder system. This can be used on a single phase or on a three-phase network.

Principle of operation This relay operates on the 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 equate 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 event the relay that is generally connected to circuit breaker operates thus tripping the main circuit.

Specifications

Leakage Current Setting : From 15mA upwards as desired.
Core balance C.T. : Toroidal core, bar primary
Auxiliary supply : 230V AC or 110AC, 50 Hz, 1 Phase
Built-in relay contact : 5 amps (resistive) 415 V AC or 220 V DC
Number of contacts : One N/O and One N/C.

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Phase Earth Leakage Relays	Phase Failure Relay	Type PFV Phase Failure Relay	Electronic Earth Leakage Relays	Type ELR Relay	AC Earth Leakage Relays

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