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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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3ph Transformer again, wiring question
I got the transformer hooked up and working thanks to you guys. Now
there's a new problem, I lost 1 leg of the 460v output side. It fired up OK this morning and I hooked up the hydraulics to test them for rotation, all was fine so I released the contactor for the hydraulics. When I tried to start the pump up again it wouldn't go so I started checking everything. 1 leg of the 3 phase was gone. I traced it back to the transformer and then checked the input 208, it's fine. All that's different on the hookup here from the building we came from is the old building was 230 delta the new one is 208 wye. I jumped the taps on the coils up to get the lost juice back and the only other thing I can think of is that the neutral wire is not connected to the input side of the transformer. It wasn't at the other building though so I didn't use it here either. Could that be a part of the problem. Stymied again JohnF |
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