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Protective relays

A protective relay is a device designed to trip a circuit breaker when an electrical fault is detected. Protective relay comprises of Current Transformer for detecting Overload, Voltage ( Potential ) Transformer for detecting High / Low Line Voltage, and ELCB / RCCB CT for detecting Earth Leakage.

A protective relay is a device designed to trip a circuit breaker when an electrical fault is detected. Protective relay comprises of Current Transformer for detecting Overload, Voltage ( Potential ) Transformer for detecting High / Low Line Voltage, and ELCB / RCCB CT for detecting Earth Leakage.