Determination of Network Constants of Polyphase Induction Motors [includes discussion]

This paper proposes the accurate determination of both leakage reactance and rotor resistance values for an exact T network for polyphase induction motor of normal design by use of slip-current power measurements without locked rotor test. By a suitable choice of variables, no interpolation is necessary. The method suggests also an accurate way of checking leakage reactance as calculated by designers.