General > General Technical Chat
HV Transformer dude almost terminating himself and the house cat!
MT:
jpyeron:
Sigh
BlownUpCapacitor:
He's really damn lucky to be still alive today. If a transformer gets excessively hot, something isn't right.
And the video in that video where he shows a piece of sheet metal stuck in the ceiling... he was that close...
All in all, glad he's fine.
Berni:
I had no idea a potted transformer could explode THIS violently.
Then again that is a LOT of potting around it. So guess it was strong enough to contain the vaporized gas coming off the burning enamel insulation up to a incredibly high pressure, then cracking and letting it all out. Looks like the iron laminations might have been helping hold it together too.
These are the worst dangers where you don't even realize something so bad could happen.
PartialDischarge:
I'd like to see the rating of this transformer, probably its a 100V measuring type which is typical for PLCs and he applied 240V. In any case this transformers should be installed with fuses.
As for people talking about voids inside, maybe, but a production test for this transformers is a partial discharge test which would detect that defect easily.
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