12-8. Assume that a symmetrical three-phase fault occurs at the terminals of motor M1 on t...

12-8. Assume that a symmetrical three-phase fault occurs at the terminals of motor M₁ on the low-voltage side of transformer T₁ in the power system shown in Figure P12-3. Make the assumption that the power system is operating at rated voltage, and that it is initially unloaded. Calculate the subtransient, transient, and steady-state fault current on the high-voltage side of the transformer, the low-voltage side of the transformer, and in the motor.

Figure P12-3 One-line diagram of the power system in Problem 12-8.