In the present context, there are many industries, mills, research and development centers, public and private sectors in different fields. For example steel sector, Oil sector, spinning mills, elevators, escalators, Trains etc. All of the industries and other various sectors employ Electrical motors and drives. Most of the electrical motors are designed for three phase, 50Hz (in India) supply. As compared to DC motors, these three phase motors are less expensive and can be started easily using D.O.L or Star/delta starters. Three phase induction motors are very sensitive and get damaged, whenever they are subjected to several abnormal conditions like Single-phasing oroverheating.In Industrial three phase loads, whenever any one of the phase of a balanced three phase supply fails to function, the remaining two phases act as a single phase source. Thus, a three phase load is driven by a single phase supply. This phenomenon is known as Single Phasing. It may cause due to line fuse blown off, terminal contacts broken due to ageing or line wire broken. This may cause possibility of fire, vibration in motors, fluctuation of speed, burning of motor winding.