I have had this question for a while. Can anyone answer it?
If I wanted to run a 600V 50HP motor with a line current of approx 50A on a 480V line. I would calculate that there is a 120V difference so the autotransformer would be 120V X 1.73 X 50A or just over 10 KVA.
This is a small transformer, with small windings and small connection lugs. It just does not seem right to be connect and run a motor of this size. Something tells me that it is inadequate in size.
Is this a correct calculation? Remove dashes "-----------" to e-mail.
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