Reactor circuit breaker specification
Reactor circuit breaker specification
(OP)
Is a reactor circuit breaker specified in the same way as that of a Transformer or a line? If not what special features make a different? Please help me.I have lost now two 66kV circuit breakers on the reactor even when the breaking current was far much higher and fault level was considered.






RE: Reactor circuit breaker specification
Switching shunt reactors are associated often with current chopping that could create severe transient voltage across the Reactor and Circuit Breakers.
Current chopping is circuit breaker dependent. Typical chopping number is as follow:
- SF6 Breaker…………..15 to 25x104
- Minimum Oil Bkr……….7 to10x104
- Air Blast Breaker………15-25x104
Suggested strategies for reduction of the switching overvoltage and stresses are:
a- Implement synchronous switching operation.
b- Limit the TRV with parallel surge arrester with SIPL & SIWL margin >32%.
c- Avoid breaker re-ignitions during opening operation.
Good luck.
RE: Reactor circuit breaker specification