Can we use shunt trip coil instead of trip coil with protection relay for protection?
Answer Posted / Anupam Shukla
No, a shunt trip coil cannot replace a trip coil in a protection relay setup. They serve different purposes. A trip coil is used to mechanically operate the circuit breaker or switch in response to the protection relay's indication of a fault, while a shunt trip coil provides an additional safety feature by allowing the operator to manually trip the circuit breaker without going through the entire control system.
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