UNSYMMETRICAL FAULT CALCULATIONS – PART – 30 – LINE-TO-LINE FAULT - PROBLEM

A 25 MVA, 11 kV, three-phase, 50Hz generator has Z1 = j0.25 p,u., Z2 = j0.35 p,u., Z0 = j0.1 p.u. and Zn = 0.3 ohms. If a line to line fault occurs on Y and B phases. Calculate the fault current and per phase voltages.