Transformer Sizing
Transformer Sizing
(OP)
Hi,
I need to size a transformer to power a variable speed drive which itself will drive a 1200 kW electric motor. Because the displacement power factor is not a really an issue, the transformer could be sized for a 1200 k VA load. How far will distorted power factor affect the transformer sizing ? The transformer ratio is 400/690 V.
Thanks for any input.
Guardiano
I need to size a transformer to power a variable speed drive which itself will drive a 1200 kW electric motor. Because the displacement power factor is not a really an issue, the transformer could be sized for a 1200 k VA load. How far will distorted power factor affect the transformer sizing ? The transformer ratio is 400/690 V.
Thanks for any input.
Guardiano





RE: Transformer Sizing
RE: Transformer Sizing
RE: Transformer Sizing
The motor PF won't be seen from the drive input, only the drive PF. Allowing for the harmonic loading on the transformer 1.5MVA likely isn't a bad estimate for size.
Why can't the drive vendor provide assistance with sizing?
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RE: Transformer Sizing
RE: Transformer Sizing
Bill
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