What is the Automatic Servo motor stabilizer?
A. This type of stabilizer uses an advance electronic controlled servo motor concept to govern a motorized variable transformer. Because of the motors involved, there is a small delay in voltage correction. However, output voltage accuracy is usually 1% with input voltage changes of up to 50%. This type of technology tends to be extremely effective when considering large three phase applications, as it is able to maintain its accuracy of all these phases, despite of input voltages balance and load balance at any power factor. They are also able to withstand large inrush currents, normally experienced with inductive loads. However, due to the mechanics of this type of stabilizer, periodic maintenance is required.