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What is Overcurrent Relay Principles and Types about?

There are three main types of over current relays based on their time of operation: instantaneous, definite time, and inverse time. An over current relay works by using a current coil; when the current exceeds a pickup value, the magnetic force overcomes the restraining force and causes contact closure. Inverse time relays provide inverse time characteristics for faults by using induction discs or programming, operating faster for more severe faults. Inverse definite minimum time relays show inverse charact

Author

Eimi Eimite

Language

EN