Which circuit breaker is preferred to be installed in extra high voltage AC system?
A)Bulk oil type circuit breaker
B)Air blast circuit breaker
C)SF6 circuit breaker
D)Vacuum circuit breaker

Question

Quizplus · Accepted Answer

SF6 circuit breaker is preferred for extra high voltage AC systems due to its superior arc quenching properties and its ability to interrupt high voltage currents with minimal space requirements and maintenance.

Which Circuit Breaker Is Preferred to Be Installed in Extra