Automatic Voltage Stabilizers

While, frequent exposure of Electrical Equipment / appliance to High or Low Voltages may lead to,

• Permanent damage to the equipment
• Malfunctioning or reduced performance of the equipment
• Reduced speed of motors, hence, requiring longer periods of continuous operation
• Frequent tripping
• Computational errors
• Reduction in the life of the appliances.

Voltage stability and accuracy decide the correct operation of the equipment. Automatic Voltage Stabilizers therefore ensure that the voltage fluctuations at the incoming power supply end does not affect the load or electrical appliance.
In this type of voltage Stabilizers, voltage regulation is accomplished by switching the relays so as to connect one of a number of tappings of the Transformers to the load, whether it is for boosting or bucking operation.
The electronic circuit compares the output voltage with the value provided by built-in reference voltage source. Whenever the voltage rises or falls beyond reference value, the control circuit switches the corresponding relay to connect a desired tapping to the output.
Voltage Stabilizers should be preferred for costly and sensitive electrical equipments / appliances to protect them from harmful low/high voltage fluctuations. Some of these equipments are air conditioners, offset printing machines, laboratory equipments, industrial machines, and wide range of lab testing equipments and medical apparatus.