I just moved my mill from my house to my shop. It was running here at the house on a phase converter, at the shop I have 3-phase installed. Since moving it, I haven't been able to get the drive system activated, the rest of the system comes up. I've diagnosed it to a point, but I'm stuck, can anyone tell me where to go from here:
My 3-phase input power is a WYE configuraiton with 220 between each leg, and 127 from each leg to neutral. My mill is configured for 230V operation.
I have 220 comming into T1 and T2, 120 going out of T1, and 120 out of part of the secondary on T2, but 173 volts on the terminals (211/212) that should have 90 volts.
Does this mean the transformer is gone bad or is this a 3-phase problem?
One other problem I've found is that the 24 volt supply is putting out
36volts, and has popped the fuse between 38 and 40.
I thought transformers usually either go open (dead) or work??
Thanks,
Granville Barker