Transformer frequency
Transformer frequency
(OP)
We specified a 125KVA 440V/220V transformer at 60Hz. It has arrived however at 50 Hz. I know the change in frequency will alter the reactance therefore the impedance, with the net result being a change in current. Will this change the flux by to large a margin and harm the windings? Or can I use the transformer at 60Hz






RE: Transformer frequency
RE: Transformer frequency
Bill
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"Why not the best?"
Jimmy Carter
RE: Transformer frequency
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If we learn from our mistakes I'm getting a great education!
RE: Transformer frequency
Regards
Marmite
RE: Transformer frequency
Lower? Scotty, wan't to try that again?
:)
RE: Transformer frequency
Lower flux density = less core heating (smaller B-H loop)
Overall effect = no change (in a perfect world!)
Am I losing it or are you?
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If we learn from our mistakes I'm getting a great education!
RE: Transformer frequency
Keith Cress
kcress - http://www.flaminsystems.com
RE: Transformer frequency
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If we learn from our mistakes I'm getting a great education!
RE: Transformer frequency
In this case, the rated voltage at 50 Hz is the correct voltage for 60 Hz so the ratio will be 1/1. 440 at 50 Hz, 440 at 60 Hz. No derating. (And no increased capacity as there is no voltage change.)
Higher frequency means higher inductive reactance and less magnetizing current. I'll defer to Scotty on overall losses.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Transformer frequency
Keith Cress
kcress - http://www.flaminsystems.com
RE: Transformer frequency
JIM