mbrooke
Batteries Included
- Location
- United States
- Occupation
- Technician
Does anyone have a concern or see a problem with this?
Tripping on low low SF6 breaker
- Thread starter mbrooke
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zog
Senior Member
- Location
- Charlotte, NC
Yes! There are typically a couple stages of worry. The first should be a low pressure warning light, the next stage is a auto trip on low pressure meaning you are getting to the point where the breaker can no longer safely interrupt current. Maaaybe you have a bad pressure switch but more likely you have a leak.
big john
Senior Member
- Location
- Portland, ME
Eh? You know that's a problem! What's the score?
Rare to see SF6 breakers without pressure gauges, I'd definitely double-check that against your density switch to see if maybe this was a control fault.
Rare to see SF6 breakers without pressure gauges, I'd definitely double-check that against your density switch to see if maybe this was a control fault.
mbrooke
Batteries Included
- Location
- United States
- Occupation
- Technician
These breakers that auto trip, are they configured that way standard from the manufacturer?
Sorry for being vague. :ashamed1: Its being debated whether or not to trip breakers on low low rather than locking them out. The breakers in question are dead tank 15, 38, 123 and 362kv 3 phase breakers.
Tony S
Senior Member
- Location
- Resting under the Major Oak UK
Not if the trip threshold is just above the minimum safe operating level, below minimum then the breaker must be regarded as inoperative. Loss of SF6 spells other troubles especially if the breaker is in a switchroom.
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