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  1. Spy613

    Impedance of three 3ph transformers in parallel

    I am working on a short circuit calculation for three 3ph 75kVA transformers in parallel. All three are identical with 1.9%Z. The total bank rating is then 3x75kva = 225kVA. But I'm not sure on the equivalent impedance? Would it be 1/ZT = 1/z1 + 1/z2 + 1/z3 (Where z1/2/3 all equal 1.9%) which...

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