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  1. calmate

    PARALLELING TRANSFORMERS

    All, I have a "old 138kv" switch yard that has 2ea 10MVA transformers in series, the first connects from the utility 138/34.5 (141.5 tap D-Y) then connects to a 34.5/7200 (33.6 tap D-D). they installed another 138kv switchyard in late 1990's and it has a 10MVA 138/6.9 (138 tap...

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