Zero Sequence Impedance of Transformers | Futurist Transhuman News Blog

hello, I am trying to do a model of a very old transformer and autotransformers using the Etap computer program and I need to know how to get the zero sequenze impedance to do some shortcircuit test. those are YYn transformer 7,5 MVa 67,56/0,575 Kv Z=7.5pu are there some Ieee book or som

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