Operation of the SF6 Circuit Breaker with a gas leak
Operation of the SF6 Circuit Breaker with a gas leak
(OP)
Hi
I am trying to write up a procedure in a event of a SF6 gas leak. My understanding is the circuit breaker will still be able to operate.
Can anyone confirm if this is the case, and does the operation of the Circuit Breaker been affected at all with low or no SF6 gas present? Thanks
I am trying to write up a procedure in a event of a SF6 gas leak. My understanding is the circuit breaker will still be able to operate.
Can anyone confirm if this is the case, and does the operation of the Circuit Breaker been affected at all with low or no SF6 gas present? Thanks






RE: Operation of the SF6 Circuit Breaker with a gas leak
rasevskii
RE: Operation of the SF6 Circuit Breaker with a gas leak
Since Sf6 has a higher density than air, there will not likely be a case where all of it leaks out and depending on the breaker type / Manufacturer, the breakers can be operated (not for fault interruption) at 0 PSIG. My experience with dead tank SF6 breakers and GIS is that this holds true.
With no Gas present, the breaker should not be operated under any circumstances - energized or not. This is generally spelled out explicitly in the breaker manual.
RE: Operation of the SF6 Circuit Breaker with a gas leak
Regards
Marmite
RE: Operation of the SF6 Circuit Breaker with a gas leak
I would not relish the idea of finding out if my breaker is one that will successfully open and interrupt line charging or transformer excitation current, nor would i like to be the author of the procedure that is being reviewed after an accident.
old field guy
RE: Operation of the SF6 Circuit Breaker with a gas leak