To know about Servo Voltage Controlled Stabilizer.

As we discussed earlier, servo voltage stabilizers (also known as automatic voltage stabilizers) are used for high power applications where a stable voltage is required, in spite of input line voltage variations and change in load. Servo Voltage Controlled Stabilizer ensures a high long-term stability of the output voltage.

It operates on a closed loop control. An electronic control circuit in the equipment measures the output voltage and compares with a high-stable reference. Whenever the output voltage deviates from the reference for more than 1% (industry standard), the servo drive (a motor) is switched on until the output voltage has again reached the nominal value. This results in a booster voltage, to be added to or taken away from the line voltage, corresponding to the deviation.

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