I assume you mean "33KVA", right?Thanks,Rich

Hi Rich,eBay usually has plenty of transformers, there are some good deals if you're patient and have good timing - search on "75 kva transformer" and you should get some hits. I'm guessing what you have is 120/208 VAC service, and you want to go to a 480 VAC delta for the motor. 480 delta to 208 Y seem to be the most common stepdown transformers offered there. Usual disclaimers, YMMV, I never said any of this, not a PE although I'd be willing to play one on TV. Be conservative and allow yourself plenty of headroom.Best regards,Ralph in NH

Rich Grise posted to A transformer would have been smaller and lighter.

Re: 220V 3 phase => 60 HP, how many amps?

Oct 18, 2007 22 Replies

Rate this thread:

JosephKK 18 years ago

Rich Grise snipped-for-privacy@example.net posted to sci.electronics.design:

A transformer would have been smaller and lighter.

Vote

Rich Grise 18 years ago

The motor is DC, which is what the MG is for.

Thanks! Rich

Vote

YD 18 years ago

Late at night, by candle light, Rich Grise penned this immortal opus:

MGs are sooo 40s. Chuck it and get a solid state DC drive. You can feed it directly from your existing supply so the cost of the drive compensates the expense on the xfmr. Sell off the MG and you may even end up ahead a few bucks.

- YD.

Remove HAT if replying by mail.

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required