Question: A 2 0 MVA, 6 . 6 kV 3 - phase generator has a positive sequence impedance of j 1 . 5 , negative sequence

A 20MVA, 6.6kV 3-phase generator has a positive sequence impedance of j1.5, negative sequence impedance of j1.0 and zero sequence impedance of j0.5. and Zn =0(a) If a single phase to ground fault occurs on phase a find out the fault current. (b) If the fault is through an impedance of j2, what will be the fault current?

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