Protection Engineering Basics and Schemes Protection Engineering | Page 249

2. About 40 liter of patrol
3. Approximately 40 hours of delay in Other feeder’s
permanent and semi-permanent fault mitigation
4. Approximately 200+ units of energy loss, which
results in loss of min 45,000Rs
We can resolve such issue and save money by using a
autoreclosure relay, now a days this auto reclosure
feature is available in many intelligent electronic devices
or protection relays.
8.1 Operation:
Auto reclosure relay(ARC Relay) sense abnormal
condition and send signal to associated circuit breaker to
open circuit for certain duration, after that duration ARC
relay attempts to close circuit, but if ARC relay sense that
fault remains in system then again this open-close cycle
repeated.
pg. 249