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I am determining the size of a utility transformer in KVA for an AC 1500hp drive. Any help is appreciated. Thanks

Thanks for the help so far. I will let you know after I see the drive this week.

When my AB 1336 AC drive runs it causes instrumentation problems with my dc drive analog output current. The output current raises 30% whenever the AC drive operates. As soon as the drive turns off the DC current immediately drops to its 'correct' level. We have tried the normal noise reduction...

Thanks for the reply jghrist. I need to think your numbers. On a job today and tomorrow.

Yea, a typo either way it works out to 32 watts. Not much energy

1 cal/cm2 equals ~4 joules. So does that mean an 8 cal incident energy equals the effect of a 32 cal incandescent light bulb? Doesn't seem like much heat.

Thanks for trying but no answers; just generalizations. Can someone give a circuit based description why using a delta wye versus a wye delta is different?

Tell me why I cannot swap a 1000kva wye delta with a 1000kva delta wye (no neutral ground) transformer. Thanks for you help