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ASA Standard Transformer Phase Shift

ASA Standard Transformer Phase Shift

ASA Standard Transformer Phase Shift

(OP)
What is the ASA standard phase shift for Y-D or D-Y two winding transformer?

It is my understanding that ASA phase shift applies HV leads 30 deg by LV. Am I correct? Does it depend whether the high side is Y or D?

Anyone chime in!

RE: ASA Standard Transformer Phase Shift

HV leads LV by 30°.  It doesn't depend whether high or low side is delta.  By the way, ASA became ANSI a few decades ago.

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