The paper considers the formation process of mathematical model of induction motor in electric drives of hazardous production facilities in phase failure emergency mode considering direct and reverse sequence fields that allows considering the impact of the elliptic field in phase failure emergency modes. The switching process into emergency two-phase operation was made using motor failure matrix. The paper introduces the results of transient modeling at loss of motor stator phase. The timing charts of speed and current obtained experimentally were compared using an automated test bench and a simulation model in the Matlab Simulink. Adequacy of the proposed mathematical model which allows investigating the induction motor in emergency two-phase operation of three-phase motor is proved.