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  1. Power Engineer_BH

    Am I correct on how voltage control works on a step voltage regulators?

    If you have 13.09 kV on the low-side of the power transformer should you use a step regulator PT ratio of 60 to get a 126 V Base or a ratio of 63 to get 120 V base. The local utilities buy 13.09 kV transformers for 12.47 kV designed distribution circuit. Why not just buy a 12.47 kV transformer?

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