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Servo Voltage Stabilizer

1101 products

Servo voltage stabilizers are reliable, durable & make appliances energy efficient. Check price, types, specifications, and trusted manufact
...show more
Servo voltage stabilizers are reliable, durable & make appliances energy efficient. Check price, types, specifications, and trusted manufacturers, suppliers & dealers in India. Buy the best quality servo voltage stabilizers online from Tradeindia.

Sampark Power Controls

Single Phase Voltage Stabilizer

28000 INR (Approx.)

MOQ- 1 Unit/Units



Servo Voltage Stabilizer

150000 INR (Approx.)

MOQ - 1 , Piece/Pieces



Servo Voltage Stabilizer Capacity: 20-125Kva

11500.00 - 100000.00 INR (Approx.)

MOQ - 1 Unit/Units



Auto Voltage Regulator

600000-1500000 INR (Approx.)

MOQ - 1 Piece/Pieces


Selvon Instruments Private Limited

Commercial Voltage Stabilizer

128000.00 - 995000.00 INR (Approx.)

MOQ - 1 Piece/Pieces



Servo Voltage Stabilizer

33000 INR (Approx.)

MOQ - 1 Piece/Pieces


ABC Transformers Pvt. Ltd.

Servo Voltage Stabilizer Ac To Dc

50000 Onwards INR (Approx.)

MOQ - 1 Unit/Units,



Three Phase Oil Cooled Servo Stabilizer

15000.00 - 150000.00 INR (Approx.)

MOQ - 1 Piece/Pieces



Linear Servo Voltage Stabilizer

30000 INR (Approx.)

MOQ - 1 Set/Sets

New Delhi


Servo Voltage Stabilizer Ac

50000.00 INR (Approx.)

MOQ - 1 Unit/Units


What is Servo Voltage Stabilizer? 

A Servo Stabilizer is a stabilization system controlled by a servo motor that uses a Buck-Boost transformer booster to catch input voltage changes and adjust current according to the desired output.

The output voltage of an AC synchronous motor is controlled by components such as a control card, dimmer, comparator, transistors, and mocs, among others.

This sort of stabilizer is helpful for ensuring a precise output voltage. When the input voltage changes by up to ±50%, it outputs a voltage of ±1%. This kind can handle loads up to 5000 KVA and beyond.

Servo Stabilizers are a popular substitute for low-high rating appliances that give unmatched voltage supply to protect your delicate equipment in commercial and domestic settings, residences, and businesses.

How Does A Voltage Stabilizer Work?

A Voltage Stabilizer's primary job is to perform two essential tasks: Buck and Boost. Buck and Boost functions are more than a means to maintain a consistent voltage in high or low voltage conditions.

Let us break it down into parts to make it easier to understand.

 1. Buck Function- (Method- Applied Voltage to the load = Primary Coil Voltage - Secondary Coil Voltage)

A switching circuit is built into the Voltage Stabilizer. Switches/ Relays are used to manually or automatically switch the Load connection to the 'Buck' mode configuration when the primary supply detects an overvoltage.

2. Boost Function- (Method- Applied Voltage to the load = Primary Coil Voltage + Secondary Coil Voltage)

Primary and secondary coil voltages are added together and applied to the load when using the boost function of a transformer's secondary coil.

A two-stage voltage stabilizer uses Relay 1 and Relay 2 to offer Buck and Boost configurations when the voltage is fluctuating, i.e. For example, if the AC input voltage is 230 volts AC and the output voltage is also 230 volts AC, then the output voltage must be 230 volts AC as well.

Types of Voltage Stabilizers

Stabilizers with power electronic control circuits, continuous voltage correction stabilizers, and switchable voltage stabilizers may all be classified into one of three categories:

  1. a. Servo Controlled Voltage stabilizers
  2. b. Relay-type Voltage Stabilizers
  3. c. Static Voltage Stabilizers 

Let’s understand it more deeply:

1. Servo Controlled Voltage Stabilizers

Voltage stabilizers operated by a servo motor are also known as servo stabilizers. Essential components of these stabilizers include a servo motor and buck-boost transformer, an autotransformer, control circuitry, and a motor driver.

If a voltage fluctuation is detected, an electronic control circuit moves an arm on a transformer to correct it.

With this, you can ensure that voltage across the secondary of your buck-boost transformer is exactly what you want.

2. Relay-Type Voltage Stabilizers 

There are a lot of electromagnetic relays in a relay-type voltage stabilizer linked to the transformer tap. They turned on one at a time to keep the output voltage stable. Accurate voltage stabilization is not achievable with relay-type stabilizers.

3. Static Voltage Stabilizers 

When it comes to servo stabilizers, a static voltage stabilizer does not contain any moving parts, as its name suggests. Using these Static Voltage Stabilizers, the voltage correction may be made to within 1% of its original value. This static voltage stabilizer includes a 'Buck & Boost Transformer', a Microcontroller, a Microprocessor, and other vital components.

Technical Guide To Select Servo Voltage Stabilizer

1. Single Phase or Three Phases

Selecting a single phrase or three-phase servo stabilizer is your first step. Your connection to the electrical grid may aid this selection. Choose a 1-phase voltage controller if you have a 1-phase grid connection, whereas a 3-phase voltage stabilizer is the best option if your grid is 3-phase.

2. Input Voltage Range

These servo stabilizers must operate within specific input voltage ranges, as here is where the real magic happens. Standard voltage ranges are 340 – 480 V AC, 300 – 460 V AC, 240 – 480 V AC, and 190 – 480 V AC, for example. 

3. Mounting

Make sure the stabilizer you're considering can be wall-mounted before moving on to the following stage. Because it is powered by electricity, the equipment is more susceptible to harm if it is left out in the rain or snow.

4. KVA Rating of Servo Stabilizer

Determine the size of the servo voltage stabilizer that you need. After you have turned on your entire load, you may measure your overall amp draw.

5. The Output Voltage

If you have any questions, please don't hesitate to ask a professional. The voltage needs of your equipment should be examined before making a stabilizer selection. Some devices require 380 volts, while others call for 400 or 415 volts.

Top 10 Benefits and Usage of Servo Voltage Stabilizer

1. Protects Industries from Damages

A servo voltage stabilizer is an essential tool for any company that uses a wide range of electrical appliances and equipment. So even a slight change in voltage may significantly impact all of the gadgets and, thus, human life.

2. Less Power Consumption

When it comes to conveying power, it does so at an appropriate level rather than causing damage by overloading the device with too much power.

3. Prevents Equipment Breakdown:

This device failure might cost you twice as much. However, using a Servo voltage stabilizer might help to avoid this situation.

4.The Savior of the House

Electrical equipment is utilized in the household as well as in the workplace. Security precautions must be taken at home for the safety of family members. It not only safeguards your loved ones from the dangers of voltage, but it also saves you money in the long run.

5. Low Maintenance Cost

A Servo voltage stabilizer features a strong motor that requires less maintenance, allowing you to save money on your electricity bill. Not only does it save money on additional costs, but it also assures a smooth manufacturing process that increases profits.

6. Reduction in Power Bill

Servo voltage stabilizer gadgets control the power supply to the devices, resulting in a lower power bill due to this controlled supply. Indeed, it's a smart strategy to use in your own house.

7. Highly Resistant

Even in the worst-case scenario, a Servo voltage stabilizer can function similarly. Such sturdiness considerably reduces the risk of voltage variations and the accompanying risks.

8. Intuitive Machine Operation

When using a servo voltage stabilizer, it is pretty simple to shift the stabilizer mechanism at any moment. A lot of necessary time is saved by industries as a result of this.

9. Exceptionally Well-Informed

Using a servo voltage stabilizer, whether at home or in the workplace, is very clever since it saves a lot of money in the long run, including the cost of new equipment, the cost of repairs, the cost of electricity, and so on.

10. Customization is a Breeze

Servo voltage stabilizers come in various strengths and voltage rates, which may be easily customized. Furthermore, its motor can be simply replaced if it malfunctions or fails.

Client Testimonials & Reviews

Balajee Impex

Member Since - 7 years

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Delhi, Delhi


Member Since - 2 years

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Kolkata, West Bengal

Voltsafe Engineering Corporation

Member Since - 7 years

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V. Tyagi

Noida, Uttar Pradesh

FAQs Related to Servo Voltage Stabilizer

What is a Servo Voltage Stabilizer?

A Servo Stabilizer is a stabilization system controlled by a servo motor that uses a Buck-Boost transformer booster to regulate the input voltage and adjust the current to the desired output.

How does a Voltage Stabilizer work?

The voltage stabilizer performs two main tasks: Buck and Boost. The Buck function reduces the voltage in case of over-voltage, while the Boost function increases the voltage in case of under-voltage.

What are the types of Voltage Stabilizers?

There are three types of voltage stabilizers: Servo Controlled Voltage Stabilizers, Relay-type Voltage Stabilizers, and Static Voltage Stabilizers.

What is a Relay-type Voltage Stabilizer?

It is a voltage stabilizer that uses electromagnetic relays linked to the transformer tap to maintain stable output voltage.

What is a Static Voltage Stabilizer?

It is a voltage stabilizer that does not have any moving parts and uses components such as a buck & boost transformer, microcontroller, microprocessor, etc. to maintain stable output voltage.

What should be considered while selecting a Servo Voltage Stabilizer?

Consider factors such as Single Phase or Three Phases, Input Voltage Range, Mounting, KVA Rating, and Output Voltage.

What are the benefits and usage of Servo Voltage Stabilizer?

Servo Voltage Stabilizer protects industries from damages, provides stable voltage, improves equipment performance, saves energy, and extends equipment life, among others.

What are the phases of servo voltage stabilizers?

The phases of servo voltage stabilizers are single phase, three phase & more.

What are the advantages of servo voltage stabilizers?


a) These stabilizers readily overcome with the problem of high voltage.

b) Servo Voltage Stabilizerworks in an efficient manner and give instant output of as high as 95%.

c) They are less energy consuming that helps to save the electricity up to a large extent.

d) These stabilizers reduces the heating of equipments that increase their service life.

e) The servo stabilizers are used in various industries, i.e. railway, communication & broadcasting industry, pharmaceutical industry, paper mills, hospitals, colleges, etc.

How is servo voltage stabilizer controlled and operated?

The servo voltage stabilizer is controlled and operated by using microprocessor based controlled that is a computerized way of controlling and managing all settings. It reduces costs and increases application flexibility. 

What are the disadvantages of using a servo voltage stabilizer?


There are a few disadvantages to using a servo voltage stabilizer. Servo Voltage stabilizer can add noise to the servo system.  - Another disadvantage is that the stabilizer may not work as well in high-vibration environments.

Does Voltage Stabilizer Increase Electricity Bill?


Stabilizers of voltage use electricity. It is difficult to pin down exactly how much electricity they use. It's the cheaper model you'll have problems with, of course. They will jack up your utility bills. It's more efficient to get a more expensive model. At the most, they'll use up 5% of the total capacity. It consumes more energy as you use it more. Equipment that requires a particular voltage supply is intended to function correctly.

Why Should You Purchase a Servo Voltage Stabilizer?


Voltage fluctuations are controlled by Servo Voltage Stabilizers, an integral element of an electrical supply system that protects against damage and electrical risks. Huge loads and quick fluctuations in electrical current delivered directly from power plants, hydroelectric stations, and step-down transformers are common. The installation of a Servo Stabilizer ensures that the expensive machinery used in manufacturing is protected from voltage fluctuations.

How do Servo Voltage Stabilizers Ensure the Safety of Appliances?

The accuracy of the output voltage of the servo stabilizer is dependent on the stability of the input power supply's voltage, which can fluctuate significantly. Protection from high- and low-voltage issues is a major benefit of using this system. A stable electricity supply also extends the life of the equipment and improves machine output, reducing waste and damage to raw materials.

Where Is Servo Voltage Stabilizer Used?

If you work in the printing business, you must have Servo Stabilizers. These devices are essential for the printing industry and machinery like flexographic machines and offset lithography. Even the tiniest shift in voltage can ruin printing material. These machines, such as MRIs and CT scans, digital X-ray machines, and so on, are vulnerable to voltage fluctuations, spikes, and other issues.