Answer / iamdon

Yes.

A transformer designed for a particular voltage and
frequency rating can be used for different set of
mentioned ratings as long as ratio of voltage to the
frequency does not deviates from designed value.
By emposing this constraint, the core of the transformer
will not saturate.Since the winding is assumed capable of
sustaining overheat, so only deciding factor is V/f ratio.

i.e,(V/f)=fixed at rated value.
50 Hz at 500V
25 Hz at 250V
75 Hz at 750V and so on.

Author:arbelectbit@yahoo.com

Grounding. Dear all at one of my site we checked the amps at the earthing cable to the alternator it was found 125 to 130 A. at the neutal cable in same machine found 146A. in the same plant checked the earthing current on other alternator it was 52A, and neutral 116 A. we are facing problems with our controller and the card was damaged once. can that neutral/GND current be a reason? as there is common grounding for the Alternator,Brkr panel,Transformer?

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