UNSYMMETRICAL FAULT CALCULATIONS – PART – 29 – LINE-TO-LINE FAULT (Zn & Zf)

UNSYMMETRICAL FAULT CALCULATIONS – PART – 29 – LINE-TO-LINE FAULT (Zn & Zf)

Consider a three-phase circuit diagram of an unloaded generator, the neutral is connected through impedance Zn and fault impedance is Zf. If a line-to-line fault between Y and B phases derive the fault current and per phase voltages.