Environmental constraints have limited expansion of transmission line networks. And with Power systems being operated close to their security limits, the likelihood of voltage collapses Occurring has increased [1]. In most industries, the induction motor forms about 50% of the total electric load and this call for a thorough analysis of their effects on the whole power system [2].After a disturbance, stalling can occur if the electrical torque does not overcome the mechanical load, causing further voltage drop and eventually voltage collapse [3]. An aggregate motor model is simulated in MATLAB-SIMULINK. If a three phase fault is not cleared in time, the motor will decelerate continuously and eventually stall.