maintained supply for switchboard auxiliary supply
maintained supply for switchboard auxiliary supply
(OP)
Why are UPS or battery supplies used for switchboard circuit breaker tripping closing and opening coils.
I read a spec that says that UPS should be used for circuit breaker:-
1. Tripping coils (and protection relays)
2. Closing motor operator
3. Opening motor operator
Is it a requirement?
I read a spec that says that UPS should be used for circuit breaker:-
1. Tripping coils (and protection relays)
2. Closing motor operator
3. Opening motor operator
Is it a requirement?






RE: maintained supply for switchboard auxiliary supply