Delta - Wye Power Transformers
Delta - Wye Power Transformers
(OP)
Could someone please explain why most power transformers in utility substations are Delta - Wye. Is it because of the imbalance on the load side(Wye) of the transformer. Also, is there a 30 degree phase shift across the transformer.






RE: Delta - Wye Power Transformers
Yes, there is a phase shift. For an ANSI transformer, the low side will always lag the high side by 30 degrees, regardless of the relative position of the delta and the wye windings.
RE: Delta - Wye Power Transformers
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