Servo Stabilizer is machine which stabilizes the output voltage to the load irrespective of variation in the input voltage.

It is of two types:

1) Air Cooled Servo Stabilizer 

2) Oil Cooled Servo Stabilizer 

The main components are

Buck Boost Transformer
Auto Transformer
Control Circuit
Servo Motor

The control circuit detects the input voltage and provides the signal to the servo motor which is interlocked with the autotransformer.

Depending upon the input voltage, whether it is a voltage drop or voltage rise the control signal drives the motor reverse or forward respectively.

Thus the Drop or rise in voltage adjusted with the help of autotransformer.

The voltage from the autotransformer is added with that of fixed voltage arising from the buck boost transformer and together the voltage is provided to the load.

The Servo Stabilizer generally has a LCD display in the front panel which displays the input and Output Voltage, load current, Frequency, Phase to Phase Voltage.

The servo stabilizer is equipped with a protection circuit which trips the output voltage in case of any failure in the correction circuit/input or output voltage is beyond permissible limit/overload/input phase failure.

It is highly reliable and it is widely used for industrial and residential applications.

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