Breaker Failure Initiate
Breaker Failure Initiate
(OP)
Hi everyone,
Can anyone explain me how BREAKER FAILUR INITIATE works ?
I have a scheme having Bus bar with 3 outgoing feeder and 1 incoming feeder.
If outgoing 1 fails to trip, then Breaker failure relay at outgoing feeder 1 sends trip signal to trip outgoing feeder 2, outgoing feeder 3 and incoming feeder 1.
Then do Breaker failure relay need to send another breaker failure initiate signal to incoming feeder as well outgoing feeder 1 and outgoing feeder 2 ? and what is the purpose of that ?
Can anyone explain me how BREAKER FAILUR INITIATE works ?
I have a scheme having Bus bar with 3 outgoing feeder and 1 incoming feeder.
If outgoing 1 fails to trip, then Breaker failure relay at outgoing feeder 1 sends trip signal to trip outgoing feeder 2, outgoing feeder 3 and incoming feeder 1.
Then do Breaker failure relay need to send another breaker failure initiate signal to incoming feeder as well outgoing feeder 1 and outgoing feeder 2 ? and what is the purpose of that ?






RE: Breaker Failure Initiate
1- initiation relays
refers to protection relays that trips CB. They must start BF scheme.
2-temporizer relay (62BF)
this relay is energized by initiation relays and operate 86BF after a time that is supposed CB did not work.
3-reset relay (50BF)
If current of CB circuit vanish . means CB has opened, so this relay that block trip of 62BF.
4 block relay(86BF)
After energized by 62BF , trip and block all adjacent CBs of CB with failure.
RE: Breaker Failure Initiate
RE: Breaker Failure Initiate
the supply that goes to the feeders.