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Joined: Oct 2000
Posts: 3,682 Likes: 3
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Joined: Feb 2002
Posts: 840
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There could be a slight problem with that.
Peter
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Joined: Feb 2003
Posts: 939
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Ahh good catch there. i am suprised that it did not trip the OCPD yet Merci, Marc
Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)
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Joined: Dec 2005
Posts: 869 Likes: 4
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Good call to shut it down.
Looks like a loose connection in that jumper, overheated and arced away the flat tab of the lug and terminal of the TX.
Cheers
Raymond
The product of rotation, excitation and flux produces electricty.
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Joined: Oct 2004
Posts: 806
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Dennis W:
A question: Can you describe the "funny noise"? I have a theatre with a similar Tx that makes a peculiar high-pitched buzz/whine..didn't notice any burning smells but it sure is loud!
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Joined: Feb 2003
Posts: 288
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Good call. I'd say that transformer would be pretty noisy anyway, what with the hard-piped connections. I'd guess the funny noise would be something other than 60Hz plus harmonics, no?
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Joined: Apr 2002
Posts: 7,382 Likes: 7
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For a 300KVA xfr, the secondary conductors seem a little on the wimpy side??
300KVA is usually 800 amp secondary MOCP @ 208 volt, 3 phase.
Oversized xfr?? Not that it matters now, but I'm curious. John
John
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Joined: May 2003
Posts: 2,876
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Ah, I have seen this before - the "Melti-tap" transformer.
When I was younger and far stupider than I am today. I did a service call for mixed voltages at a supermarket, and went all over trying to find the place that had a neutral - all the way back to the transformer and pulled the cover off (LIVE - DUMB) to find a glimering molten pool of Aluminum. Do ya know that feeling like you're looking at a nest of angry hornets close up? "I'll just put this cover back on with 2 screws, and get away from this fast..."
Mark Heller "Well - I oughta....." -Jackie Gleason
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Posts: 57
Joined: August 2003
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