Mains electrical Q: transformer sizing?
 

On Thu, 17 Jan 2008 22:27:35 GMT, James T.
wrote:

Because this is driving a purely resistive load, this doesn't help bring
the parameters within the transformer's rating, does it?

No, a purely resistive load is best case.

But since the transformer is (presumably) designed with a worst-case PF (or
at least some PF value greater than 1), can't it be re-rated (what's the
opposite of "derated"?) if used with a strictly resistive load?

In other words, a transformer rated at 10KVA for a load with PF = x, should
be able to handle a greater KVA if driving a PF = 1 load. Shouldn't it?

volts * amps = volt-amps regardless of power factor.