Blown SF6 Breaker
By - chrispl57
Hey guys. Think you could have this back in an hour or 2?
SF6 as in sulfur hexafluoride?
Yes, it does some piddling stuff with insulation and arc quenching, but what's *actually* important here is that [it makes your voice deeper.](https://www.youtube.com/watch?v=d-XbjFn3aqE)
How often do y'all see SF6 breaker failures like this? Did it fail during operation?
Failed while in service I know of 4 that have failed like this. IIRC the few that failed like that where due to slow relays / bad settings. And they where always an animal contact.
Thanks for the info!
Sounds like your relay application engineers need some serious training.
Yeaaaaa that’s one of the many reasons I left that company
Hot damn! Looks like Spider-Man kept that pole from taking off
Fault on opening or what?
Bushing went bye-bye
"Density, schmensity, there's still some gas in there just open the damn thing!"
Was gonna say.
Can's don't look long enough for 66kv
Really? is it a feeder breaker?
Bus tie between 26kv lines
I saw that you said it failed while in service. Was there a transformer out and this thing just failed outta nowhere?
It was a temp flow through station just tiring a few lines together with no transformers. Failure was due to an animal contact.
I may be wrong but I bet it’s rated for 72.5kV…. Just looking at those bushings
Have had 3-4 fail over the years, but all entirely internal. Had one that was catastrophic, but it was taken out by a Willie Wonka bundle of Mylar balloons. Breaker didn't have a chance.