On 4/5/13 9:26 AM, Mark X2 wrote:
don't see why it wouldn't work. The resistance difference could be something like one is wound with aluminum and the other copper, or with different gauge wire.Hi all, I've got two 6kV double pole PTs and I'd like to put the LV windings in series and the HV windings parallel, to get rid of the otherwise needed 230-110V transformer. The thing is that they're not identical. The old one's HV winding has 2,1 kOhm resistance and the newer one 2,6 kOhm. I'm not sure if I can get away with this or should take certain measures?
Easy to test.. hook up your 220V (or 110V) to the high voltage windings and measure the voltage on the low voltage windings. This is also a good way to check the phasing after you connect them together..
(although if it's marked with the usual X1/X2 and H1/H2, that's probably not needed)
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