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  1. VarmaPinnamaraju

    Earthing Transformer ( ZigZag wound ) sizing calculation basis and formulae

    Hi, Please advise and provide for the Sizing calculation kVA of a Earthing Transformer (ZigZag wound). Inputs : Earthing Transformer is for connecting to 22kV, 3 phase 3 wire, 1250 Amp, Isc-25kA. 22kV bus Upstream is connected to 40MVA 230/22kV YNd1 Transformer. Maximum line...
  2. VarmaPinnamaraju

    Earthing Transformer ( zigzag wound ) sizing claculation method

    Hi, Please advice for the ZigZag wound Earthing Transformer sizing calculation basis and formulaes. Earthing Trafo to be connected to : 22kV, 3 phase, 3 wire, 1250Amp, Isc 25kA bus. (22kV bus upstream is connected to YNd1 40MVA 230/22kv Transformer )...

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