Frequently Asked Questions


What are the types of Voltage Stabilizers?

The inigitial Voltage Stabilizers came in the market were manually operated/ selector switch operated . These type of stabilizers used electro-mechanical relays for selection of desired voltage. With advancement of technology, added electronic circuits came into existence and the Voltage Stabilizers became automatic. Then came the Servo based Voltage Stabilizer which is capable of stabilizing the voltage continuously, without any manual intervention. Now, IC/ Micro controller based Voltage Stabilizers are also available which can perform additional functions too. The Voltage Stabilizers can be broadly categorized into three types. They are:

Relay Type Voltage Stabilizers

In Relay type Voltage Stabilizers, the voltage is regulated by switching relays. The relays are used to connect the secondary transformer(s) in different configurations to achieve Buck & Boost function.

Servo based Voltage Stabilizers

In Servo based Voltage Stabilizers, the voltage regulation is done with the help of servo motor. They are also known as Servo Stabilizers. They are close loop systems.

Static Voltage Stabilizers

A Static Voltage Rectifier has no moving parts as in case of Servo based Voltage Stabilizers. It uses a Power Electronic Converter Circuit to stabilize the voltage. These Static Voltage Stabilizers have very high accuracy and the voltage stabilization is within ±1%.

A Static Voltage Stabilizer contains ‘Buck & Boost’ transformer, Insulated Gate Bipolar Transistor (IGBT) power converter, Microcontroller, Microprocessor and other essential components.

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