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Y connected ? and transformer efficiency ? | 10 comments (10 topical, 0 editorial)

Re: Y connected ? and transformer efficiency ? (3.00 / 0) (#5)
by joestue on Sun Apr 27th, 2008 at 08:00:01 PM MST
(User Info)

Are these true sine wave inverters you speak of?
If not, then the manufacturer is forced to use better iron, because harmonics quickly dominate iron loss in square wave driven circuitry.

I have used a 450va rated transformers from an APC ups as a 600 watt oil cooled battery charger, it didn't burn up, also the no load current draw was 1 amp from a 12 volt lead acid, when operating as an inverter. now that I think of it, that is really good, considering the iron core weighed a few pounds. I would not be surprised if the iron is of a much better grade than it was 10 years ago.

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Y connected ? and transformer efficiency ? | 10 comments (10 topical, 0 editorial)

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