Know the difference between Servo Voltage Stabilizer and UPS.

Power-based equipment like servo stabilizers and UPS are more commonly used nowadays to fulfill necessary industrial, commercial, and residential power applications. Though both of them ensure better power supply to the concerned equipment, there are certain key differences.

Actually speaking, both of them are very much distinctive on their own and can’t be compared to the other. However, with misinterpretations, we get carried away and do not make the right choice during purchase. So, get ready to know the difference between them to make yourself aware of the suitability of these power solutions.

Servo voltage stabilizers and UPS – Essential Power-Based Devices

Power supply for industries, residential buildings, or any other places is the only source for operating any appliances, equipment, or machinery. Either simple, sensitive, larger, or complex appliances work only if substantial levels of power are supplied to them.

Through the use of certain power-based devices like servo voltage stabilizers and UPS, it is possible to ensure better performance of various types of equipment. Therefore, they are considered essential power-based devices to manage enough power supply.

Here is a brief note on these two specific devices that makes one keenly understand the discrete features and differences between them.

Servo Voltage Stabilizers

Everybody knows that stabilizers are the devices that stabilize the voltage levels and supply the substantial voltage output to the end-use equipment. There are many kinds of stabilizers and servo voltage stabilizers are the popular ones used ubiquitously.  

The main function of servo voltage stabilizers is to stabilize the voltage. Often, higher or lower voltage levels arise in the input power supply. This may damage the equipment. So, in order to ensure that required substantial voltage levels are supplied to the appliances, servo voltage stabilizers are used. They increase or decrease the voltage based on the voltage from the power source.

This is, however, possible with the help of servo motors. These are the principle mechanical units of servo voltage stabilizers. A servo motor moves a shaft attached to it in a clockwise or anticlockwise direction to increase or decrease the voltage levels. With the help of another autotransformer or buck-boost transformer, the servo voltage stabilizer regulates the power voltage.

Specialized applications like elevators, electrical equipment, medical equipment, motor lab equipment, IT applications, industrial machinery, metal processing equipment, and so on definitely need considerable voltage limits. Servo voltage stabilizers successfully fulfill these demands.

Different kinds of air-cooled and oil-cooled three-phase servo voltage stabilizers are available in the market today.

The other specialized device called UPS is meant for supply and not for stabilization.


Uninterrupted Power Supply (UPS) systems are the devices that continuously provide the power supply to any equipment. They are most helpful during power cuts. Many industrial operations, data organization activities, software developments, etc. get disturbed with power interruptions. So, it is mandatory for such firms to inculcate UPS systems.

UPS systems have a static bypass, rectifier, and a battery. The static bypass is intended for power supply – upon the failure of the power system, this closes and allows current to pass through a rectifier, battery, and the inverter. The rectifier helps to charge the battery system and it also converts the incoming A/C power to D/C. The battery of the UPS systems is mainly responsible for providing power supply in case of power interruptions or power cuts.

Different modes of operations are seen in UPS systems – offline and online UPS systems. While some are used for simpler appliances some others are used for greater industrial applications.

So, the ultimate use of UPS systems is to ensure a continuous power supply avoiding operational and financial losses. However, nowadays, with advanced technological inclusions, they are modulated with specific components so that they can even avoid negative effects of spikes, surges, sags, etc.

The Ultimate Inference

A servo voltage stabilizer is for voltage regulation – increase or decrease of voltage levels.

UPS is for continuous power supply and attenuation of power-interruption defects.

There is a wide disparity in their function, components, features, and applications. However, based on the prevailing conditions and situations, one should choose either a servo stabilizer or a UPS.

Servo voltage stabilizers are perfect for use when there are frequent fluctuations in the power supply. Whereas, UPS is feasible when there is regular power-cut. However, if both the conditions do occur, then it is necessary to successfully purchase and install the two specialized power-devices.

Servomax Limited is an eminent manufacturer and supplier of servo voltage stabilizers and UPS systems in India. It offers various capacities of units with customized designs and sizes. Get aware of your power consumption demands, power variation and interruption basis, and other considerable elements to purchase the right servo stabilizers and UPS systems.

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