COMPLETE VICTORY over the transformer!

Ignoramus17720 · 2012-01-03T21:06:32+00:00

I spent a whole day messing around with the transformer. The first disappointment was that even at the lowest count of turnstap, the transformer would put out 511 volts, which is way too much. After some frustrated thinking, I realized that I could pull out theouter winding a bit and tap into it with a split bolt. After a little bit of work with a calculator, pulling the aluminumwinding a little bit, trip to McMaster Carr, putting everythingtogether and applying Noalox, I ended up with a transformer with amore suitable turns ratio on the secondary.The output from the transformer is 476 volts, which is pretty good. After a little bit of tidying up, I took a picture. now have a nice 45 kVA transformer, with a nice 60A disconnect onthe output side, a nice "hi quality" input cable etc. I am SO FUCKING HAPPY, like someone else would be with a Mercedes Benzcar. I immediately went on and tested the 460 volt 3 ton coffing hoist,which, no surprises, worked great like it is supposed to.i

Jan 03, 2012 22 Replies

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PrecisionmachinisT 14 years ago

Oh well...

--just shows that I didn't waste as much time watching that kind of crap as certain others might have.

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jk 14 years ago

Stuff in steel boxes goes "poof" ALL the time jk

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jk 14 years ago

A ground detection device does not need to be a GFi. Traditionally it was a "3 light system" (usually done with neons). You wire the 3 bulbs in Wye, ground the center point, and connect one of the remaining wires to each leg of the delta. When you get a ground on a phase, that light goes out, or gets dim, and you know you have a problem. Also provides a system ground reference that eliminates "charge pumping". jk

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