Drawbacks of SF6 circuit breakers

Q.  What is the major drawback of using SF6 circuit breakers?
- Published on 17 Nov 15

a. Sealing problems of the gas.
b. Ingress of moisture in the gas system – dangerous.
c. Deterioration of SF6 gas with time.
d. Both (a) and (b)
e. None of these

ANSWER: Both (a) and (b)

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