Which of the following is demerit of SF6 circuit breaker?
A. sealing problem of gas
B. in flux of moisture in the gas system is dangerous
C. deterioration of quality of circuit breaker affects reliability of circuit breaker
D. all of the above.
Answer:D
Which of the following is demerit of SF6 circuit breaker?
A. sealing problem of gas B. in flux of moisture in the gas system is dangerous C. deterioration of quality of circuit breaker affects reliability of circuit breaker D. all of the above.