shows the per-phase equivalent circuit of an induction motor referred to stator side. where, r1 = Stator resistance per phase in Ω X1 = Stator leakage reactance per phase in Ω I1 = Stator current per phase in A Rc = Shunt branch resistance in Ω Xm = Magnetizing reactance in Ω Ie = Per-phase no-load current in A I2 = Rotor current per phase in A I2’ = Rotor Current per phase referred to stator in A X2’ =Standstill rotor reactance per phase refe to stator in Ω r2’ = rotor resistance per phase referred to stator in Ω V1 = Stator voltage per phase in V E1 = Stator induced emf per phase in V s = slip