Servo voltage stabilizer is a closed loop control mechanism which serves to maintain balanced 3 or single phase voltage output in spite of fluctuations at the input owing to unbalanced conditions. Highly fluctuating AC mains supply is a very common phenomenon in India and difficulties caused by them are well
known. The stable Input supply is a basic necessity in the absence of which sophisticated equipment do not give optimal performance. Major industrial loads are inductive in nature (i.e .A.C. Motors) and they draw considerably high current at High & Low voltages resulting in higher losses which in turn increases the temperature of motors thereby reducing the motor life