Tag Archives: generators

On detection of a persistent phase imbalance between an AC generator connected to the main bus bars and other AC generators, the protection device that opens is/are the:

A: generator breaker.
B: generator breaker and the tie breaker(s).
C: tie breaker(s).
D: exciter control relay and the generator breaker.

 

 

 

 

 

 

 

 

Answer: C

Pulling the fire shutoff handle causes a number of devices to disconnect. In respect of the AC generator it can be said that the:

A: exciter control relay opens.
B: exciter control relay and the generator breaker open.
C: generator breaker opens.
D: exciter control relay, the generator breaker and the tie breaker open.

 

 

 

 

 

 

 

 

Answer: B