Static Earth Leakage Relay

Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT
/ ZCT) are used to detect the leakage current in an Electrical Power System. Static Earth
Leakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCB
CONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electrical
power system. Static earth leakage relay (ELR) and core balance current transformer (CBCT /
ZCT) have been widely used and accepted because these have field adaptability and are
economic.

• Frame Leakage protection for L.T. Control Panels and switch boards.
• Earth Leakage protection for Feeders / Motors / Generators / Transformers / Mobile Operating Equipments.
• Protection for hazardous sensitive environments like Oil Refineries/ Cement Plant/Steel Plant /Chemical Platforms/Pulp industries and General Electrical Distribution.
• Protection for Mining & Control Engineering