Help Needed Sizing Transformer & RPC Question
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    Default Help Needed Sizing Transformer & RPC Question

    I have a 5 hp, 480 volt, two speed constant torque motor that I would like to power using my existing 10 hp, 240 volt RPC. Motor plate lists amperages as 7.0 at 1800 rpm and 5.7 at 900 rpm. What is the minimum kVA rating that I need on a transformer?

    Also, I've seen some comments indicating that 2 speed motors may require a larger than normal converter - will my 10 hp RPC be large enough?

    Thanks.


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