9 Best Stabilizers in India 2021 – Reviews & Buying Guide

A developing country like India where power supply is still a major issue suffers from voltage fluctuations, power outages, blackouts, load shedding etc. All such voltage jerks and shocks can cause irrevocable damage to the electrical appliances that may be functioning or even connected to the circuit. . Voltage fluctuations over a certain margin can damage the electrical appliances permanently. Such costly appliances may get damaged due to this and may become unusable or maybe consume thousands of rupees in repairs. Voltage fluctuations may occur due to variety of reasons and is not always the fault of the supply from the electrical grid.

Every electrical appliance comes with their own voltage rating that is required as input between which the appliance will work normally. Any voltage rating out of that range can cause damage to the internal circuitry of the appliance. Although modern electrical appliances come with a good voltage range that covers most of the voltage fluctuations that may occur naturally but anything out of the ordinary may hamper the normal functioning of the device and the device may be exposed to some amount of danger. 

Electrical circuits can also get damaged due to massive voltage fluctuations which can cause circuit failure across the house. Voltage up and down both can be dangerous for the appliances connected in the circuit. To protect and safe guard these electrical appliances voltage stabilizers can be used. These stabilizers take the input voltage and do the necessary corrections required and supply the standard voltage as output that is required as the input for most of the devices and appliances connected across the house.

Calculation to understand how much do stabilizers consume: 

Like every electrical appliance even stabilizers only work with an efficiency of 95 to 98%. The rest is consumed from the load power as loss in terms of heating due to the presence of many components in the circuit board. To understand how much power will a typical electrical stabilizer will consume let us look at the following example. 

Example: Let us assume we are operating a 1.5kWA stabilizer which is 98% efficient. So the loss in the operating power will be 2% of 1.5kW. This is equal to 30 W. this is during the peak load.
Now assuming that the stabilizer is operated for 12 hours in a day so the amount of units that it will consume during the working is as follows: 

Units Consumed = 30*10^-3 kW * 12 hours = 0.36 units

In total a 1.5kWA rated stabilizer used for about 12 hours a day will consume 0.36 units of electricity. 

Depending upon the total consumption during its lifetime usage the user should do some quick calculations whether to buy a separate stabilizer for each equipment or go for one common one which will be connected in the mains. Whichever seems beneficial should be the decision to go with. 

9 Best Stabilizers in India 2020

Based on the factors that goes into the selection of voltage stabilizers and the personal usage requirement we have curated a list of stabilizers that may help in making the buying process a bit easy for all of you. The list goes as below: 

V Guard VG 400 for 1.5 ton AC

V Guard VG 400 for 1.5 ton AC

V Guard is one of the leading players in the electrical equipment manufacturing in India. It was founded in 1977 and has been selling various electrical appliances all over the country. They are specifically known for their voltage stabilizers and have been consistently manufacturing high quality and reliable products over many decades. 

The stabilizer is made up of durable ABS (Acrylonitrile butadiene styrene) material that gives the stabilizer a long life. Because this stabilizer is specifically designed for ACs it comes with a mounting facility so that it can be directly fixed on the wall itself. Because of its simple and clean design it will go with the overall aesthetics of the room. 

This V Guard VG 400 is specifically designed for an air conditioner which has an output of 1.5 ton. The air conditioner will rescue the users from the heat of the summers but what protects the air conditioners, the answer V Guard stabilizer. VG 400 is a smart and intelligent voltage stabilizer which is built with superior IC technology to protect the appliances from the power surges and dips.

When it comes to air conditioners frequent voltage fluctuations can cause the compressor to malfunction. The stabilizer comes with Intelligent Time delay response that protects or isolates the compressor from the external voltage fluctuations and provides proper time to work efficiently and properly. 

Apart from this the stabilizer has Low and High voltage cut off protection which will help in protecting the appliance and elongate their life. The air conditioner connected with the stabilizer increases the working range of the voltage from 170 V to 270 V. this is a very healthy range to use the AC comfortably without much worry. 

In case of a major voltage surge that may cause a burnout scare the stabilizer comes with a thermal overload cut off which adds another layer of safety for the appliance. 

The VG 400 comes with an input and output LED indicators that makes it easy for the users to gauge the working of the stabilizer.

Pros
  • ABS durable material
  • Time delay mechanism
  • Thermal overload protection
  • Intelligent voltage stabilization
  • Input and output LED indicator
Cons
  • Range is small and regular fluctuations may cause excessive time delay

V Guard TV Stabilizer Crystal Plus Smart

V Guard TV Stabilizer Crystal Plus Smart

This product is another quality offering from the V Guard brand but this one is specifically skewed towards television.

The V Guard Crystal Plus Smart stabilizer is well built and is sturdy. This compact stabilizer is made out of virgin ABS material and also comes with an option for wall mounting. The overall design and colour will blend in with the television set and the overall décor of the room so that the stabilizer does not stand out. 

Voltage fluctuations over a period of time damages the internal circuits and also decreases the life of the electronic appliances. The stabilizer is rated to increase the voltage working range from 90 V to 290 V to ensure the optimum efficiency for the appliance connected with it. The stabilizer is rated for 3 A television output which will be okay for 43 inch TV sets as well as home theatres for an uninterrupted care free usage. Due to high range and rating the stabilizer is capable of handling the entire entertainment system including the TV, set top box, home theatre, DVD or Blu-ray players and gaming console. 

This stabilizer is digitally micro controlled to perform the voltage correction quickly without any delay, which means more reliable and faster outputs. 

Apart from this the stabilizer comes with safety nets such as low and high voltage cut off, built in thermal overload protection which completely ensure that the costly appliance does not face any harm due to voltage fluctuations. 

The stabilizer has a 7 segment LED display which means that the person can monitor the input and output voltage by the display readings. This will also give an idea whether the voltage is in the normal range or not. 

Pros
  • Sturdy built with ABS durable material
  • Thermal overload protection
  • 7 segment LED display to monitor the voltages
  • Low and high voltage cut off
  • Quick voltage correction
Cons
  • Step up of voltage range is around 30 V

V Guard Stabilizer VGSD 50 smart

V Guard Stabilizer VGSD 50 smart

From the brand which is an expert in making stabilizers this one is inclined towards refrigerators for smooth operation without any hassle. 

This stabilizer is rated for operating with a single or double door refrigerator with an approximate volume of 300 L. The stabilizer is rated for 2 A. with the stabilizer the working range of the appliance gets from 130 V to 290 V.

The stabilizer is compact and durable. It is made from virgin ABS which gives it a good finish and makes it durable for all types of environment. In terms of look it comes in red colour which makes it blend right with the refrigerator and walls of the home without standing out to the eyes.

The stabilizer is micro controlled which makes the voltage buck and boost operation quickly and steadily with high precision.

The stabilizer comes with time delay mechanism which delays the start and stop of the fridge so as to not put a lot of load on the compressor of the refrigerator. The time delay makes sure that the health of the appliance is not affected and it stays in great shape for years to come. 

The stabilizer comes with a nice 7 digit LED display which shows the voltage rating so as the user knows the exact voltage output at all times. 

In terms of safety mechanisms the stabilizer comes with cut off and thermal overload protection so as to safeguard the appliance from malfunctioning. 

Pros
  • ABS durable material
  • Time delay mechanism
  • Thermal overload protection
  • LED indicator
Cons
  • Range is small and regular fluctuations may cause excessive time delay
  • No copper windings

Monitor 4-KVA for AC up to 1.5 tons

Monitor 4-KVA for AC up to 1.5 tons

Monitor Voltage stabilizers has set itself as one of the leading stabilizers manufacturing companies in the country. The company was set up in 1981 and has been known all these years for their durable and dependable quality stabilizer. 

This stabilizer comes with copper windings which makes it even more durable and dependable. The product is made from the best materials and has most of the safety features that one can expect from a good stabilizer. 

The stabilizer is 4 KVA is affordable and provides a complete functionality with superior copper windings that can withstand and protect the appliance from voltage dips and overload. The overall performance of this stabilizer can handle an air conditioner up to 1.5 tonnes capacity.

The stabilizer is handy and can be easily mounted on the wall near the air conditioner and can also be kept on the floor. 

The stabilizer is capable of handling 1.5 tonne of AC and not more. The stabilizer comes with 100% copper windings which is superior and safer than aluminium windings. The copper windings means that it saves power over conventional stabilizers that come without copper windings.

Copper also is better conductor over aluminium and the high price will be recuperated over the years in terms of saving in electricity bill. 

The voltage handling range of the stabilizer is from 170 V to 270 V. anything outside this range means that the stabilizer will cut off and save the appliance from malfunctioning.

The stabilizer comes with 1 year of warranty if it is registered with the company with all the details within 10 days of purchase or bill date it will be extended for 4 more years. The stabilizer also comes with 5 years of free replacement service.

Pros
  • 4 years warranty
  • Thermal cut off
  • Copper windings which is durable
  • Saves power and is safer
Cons
  • No LED Display
  • Higher cost due to copper windings

Monitor Voltage Stabilizer for LED TV upto 65 inch

Monitor Voltage Stabilizer for LED TV upto 65 inch

Another great product offering from the brand Monitor. This stabilizer is skewed specially towards televisions. The stabilizer can be operated safely for television which can carry loads up to 3A.

This will cover most of the television sets till 65 inch including LED, LCD, plasma along with the entire entertainment system including gaming console, set top box, DVD or Blu-ray players. 

This stabilizer also utilizes 100% copper windings which is great in terms of better conductivity and is safer due to withstanding thermal conditions. Copper due to their better conductivity also consumes less power during operation which means more efficiency and better savings in the electricity bill. 

The working range of the stabilizer is from 140 V to 290 V which is quite high compared to a conventional stabilizer. This also provides quite some room to all the appliances connected in the entertainment system to function normally and without any abnormality.

Copper produces less heat due to less resistance than aluminium. This translates to less heating, less power loss, better power factor and better efficiency of the stabilizer and the appliance connected in series with it.

The built of the stabilizer is very sturdy and durable. The outer body is made of metal which can withstand environmental abuse and easy to maintain and clean. The stabilizer can be kept on the ground or can be mounted on the wall which will blend right with the entire entertainment system.

The stabilizer also comes with 5 year warranty which will provide a peace to the user’s mind in terms of long duration usage and value for money. 

The stabilizer comes with high voltage cut off to safeguard the appliance. 
It does not have 7 LED Display but comes with LED indicator to show case the working of the stabilizer. 

Pros
  • Metal body which makes it durable
  • Thermal cut off
  • Copper windings
  • LED indicator
  • 5 year warranty
Cons
  • No 7 LED Display
  • Costlier than other stabilizer with similar functionality

V Guard Mini Crystal Voltage Stabilizer for TV

V Guard Mini Crystal Voltage Stabilizer for TV

Mini Crystal Voltage Stabilizer is another quality option for televisions from the brand V Guard. 

The stabilizer is compatible with 32 inch television which is capable to handle 1.3 A with 240 V output. The stabilizer is not capable to handle the entire entertainment system but can handle a television with a set top box. It can be placed on the floor or may be mounted on wall.

The stabilizer comes with an operational range from 90 V to 290 V and anything outside this range will cause it to cut off. 

The stabilizer comes with many safety net to protect the appliances connected with it. It comes with line noise and voltage spike protection. The stabilizer comes with voltage overload cut off which isolates the appliance from the mains. It also has thermal overload protection.

The stabilizer comes with time delay mechanism to ensure delay while turning the appliance on and off quickly to protect it from the voltage dips and surges. 

The stabilizer comes with 3 year warranty on the appliance.

Pros
  • Time delay mechanism
  • Thermal overload protection
  • LED indicator
  • 3 year warranty
  • Voltage range from 90 V to 290 V
  • Line noise and voltage spike protection
Cons
  • No copper windings

Syspro Commander Voltage Stabilizer for LED TV 42 inch with copper coil

Syspro Commander Voltage Stabilizer for LED TV 42 inch with copper coil

Syspro is an integrated company that manufactures electrical appliances. It was established in 1990 and they have been operating for the last 3 decades by producing high quality products that are safe, durable and value for money. 

The stabilizer is compact, durable and long lasting. It comes with smart voltage correction technology that quickly corrects the voltage and supplies the ideal required voltage to the appliance so as to avoid them from malfunctioning.

The voltage range of the stabilizer is from 180 V to 280 V. This range is optimum for handling the entire TV and the entertainment system. The stabilizer can be placed on the floor or can be mounted on the wall. 

The stabilizer has many safety mechanisms to safe guard the appliances. It comes with low and high voltage cut off to avoid malfunctioning of the appliance connected with it.

There is also thermal overload protection to isolate the appliance from the mains. It also comes with spike protection and short circuit protection. It is also compatible with generators which is beneficial for the customers. 

The stabilizer comes with copper windings and not the usual aluminium wires which makes it safer, better, cheaper in terms of usage as there is lesser loss of power. 

The electronic circuit of the stabilizer provides time delay mechanism to elongate the delay from start and stop of the appliance from the mains.

The device comes with 5 year warranty that is beneficial for the customers.

Pros
  • Time delay mechanism
  • Thermal overload protection
  • Copper windings
  • Spike protection
  • Affordable
Cons

    Spartan Microtek Digital Voltage Stabilizer for AC 1.5 ton

    Spartan Microtek Em4130+ Digital Voltage

    Microtek has been in the business for over 30 years manufacturing electrical appliances which is directed towards the customers. They are one of the known brands in the country. Their quality products range from stabilizers to solar technology. 

    Microtek stabilizers are made up of metal which gives makes it durable and sturdy. The stabilizer can be placed on the floor or mounted on the wall. 

    The stabilizer is for air conditioners with a capacity of 1.5 ton. The voltage range of the stabilizer within which it can operate normally is from 150 V to 290 V. 

    The Microtek stabilizers come with a safety net with various features starting from low and high voltage cut off. The stabilizer comes with thermal overload protection. It is a relay stabilizer which makes it give optimum performance.

    The stabilizer automatically bucks or boost the voltage of the input depending upon the requirement. 

    The stabilizer comes with 7 digit LED display which shows the input and output voltage in and from the stabilizer. 

    The stabilizer have aluminium windings and not copper which makes it affordable but comparatively higher in power consumption and high heat loss. 

    The stabilizer comes with 3 years warranty. This is lower than the industry standards.

    Pros
    • Thermal overload protection
    • 7 LED display
    • Low and high voltage cut off
    Cons
    • No copper windings

    Microtek EM4160+ Automatic Voltage Stabilizer for AC 1.5 ton

    Microtek EM4160+ Automatic Voltage Stabilizer for AC 1.5 ton

    This is another quality offering from the brand Microtek. This stabilizer is directed solely towards air conditioners which is 1.5 ton capacity. The normal operating voltage range is from 160 V to 285 V. 

    It is made up of metal which makes it stable and durable. 

    The stabilizer comes with a lot of safety features. This includes protection from thermal overload. It also protects from low and high voltage spikes and safe guards the appliances.

    The stabilizer can be put on the ground or can be mounted on the wall near the appliance itself. 
    The stabilizer comes with their proprietary energy saving technology which they call ‘Save Power Technology’.

    The stabilizer has 7 digit LED display that show cases the input and output voltage of the stabilizer. 

    Pros
    • Metal body, thermal overload protection
    • 7 LED display
    • Spike and dip voltage protection
    Cons
    • No copper windings

    Buying Guide for Stabilizers in India 2020

    There are many different technologies and many products associated with each of these technologies are available in the market. To understand every aspect associated with purchase of stabilizers refer to the following list of factors: 

    Power supply in the area 

    The user should know about the voltage drops in his or her area and locality. The amount of correction that may be required. For instance if the voltage fluctuation is on the very low side then probably no external stabilizer will be required. The internal tolerance of the appliance will be able to withstand the same. If the fluctuation is + 5 percent and non-recurring then any simple low cost stabilizer will be enough. 
    That is why it is very important to have the idea regarding the voltage fluctuations in the surrounding area and how frequently it happens. 
    Also, this will give you an idea whether to go for individual stabilizers for some appliances or go for a single stabilizer that will be connected with the main supply circuit of the home. 

    Current rating of the equipment

    The user needs to understand the power rating of the appliance before selecting and deciding on a stabilizer. The stabilizer output should be compatible with the input of the appliance also, the input of the stabilizer should be compatible with the mains as well. The KW and the ampere rating should match otherwise the stabilizer and the appliance will be at a huge risk. 

    Calculation

    Stabilizer consumes power as well. The user needs to know the power consumption when it is connected with the appliances is provides the input with in series. 
    Just like every electrical appliance and machine even stabilizers are not 100% efficient. Typically an average stabilizers are 95% to 98% efficient. They consume 2% to 5% load while running and producing a steady output. 

    Phase

    There are stabilizers which are useful for single phase or 3 phase setup. Depending upon the usage requirement the user can eliminate and make a purchase decision. 

    Time Delay System

    This is a safety feature that is built in the stabilizer to provide enough time so as to balance the current flow when the power is cut. 

    Protection Mechanisms

    The stabilizer also comes with additional safety features like overload or short circuit protection to keep the appliances safe. In case of overload or short circuit the stabilizer can protect the appliances by cutting off the power all together. This is a great way to protect and isolate the appliances from the mains and provides them an additional blanket protection.

    Warranty

    The stabilizers are something which lasts for years and users do not keep changing or upgrading it. So it is always better to look at the warranty period, longer the better. Also it makes sense to have a long warranty period helps with minimizing the maintenance cost and maintain the efficiency for years to come.

    Indication Reading

    The stabilizers should have indication and meters to read the output voltage so to know exactly what is the output voltage and the voltage being fed in the appliance. There are many models that come with LED indicators for better monitoring. 

    Why are stabilizers important?

    Most of the households across our country do not receive steady electrical supply due to which most of the home appliances stay exposed to voltage fluctuations. The main function of a voltage stabilizer is to maintain a steady output irrespective of the fluctuations in the input voltage from the main supply. The stabilizer output ensures that the voltage has no unusual fluctuations or oscillations. 

    Most of the electrical appliances are resistant to a certain standard voltage fluctuation but that range is not exactly very large. Any fluctuation out of this range will damage the circuit or the overall appliance. Just to understand the importance of stabilizers in home let us look at the following appliances which are commonly found in every house and how most of them are vulnerable to voltage fluctuations. This will showcase the importance and the vulnerabilities that lie hidden during the voltage fluctuation. 

    Heating Coils

    Appliances that come with heating coils and rely mainly on generating at its core are often failing due to voltage spikes in the circuit. This happens due to the breakage between the electricity terminal and heating terminal. Examples of devices with heating coils at its core are Toasters, Electric Iron, Filament Lamps, Hair dryers, electric geysers, etc.

    Appliances which are connected to the electric grid 24 hours: Electrical appliances such as Television, refrigerators, Computers, etc. are mostly connected and never disconnected from the mainline. Although most these appliances come with internal voltage rating that can withstand fluctuations to a good degree but not overall. 

    Motors

    Any equipment that come with AC or DC motors convert the electrical energy to mechanical energy. The overall motor coils have a good resistant to voltage fluctuations and most of them will work fine on low voltages. But the life span of the motors go down drastically if they are continuously operated during voltage fluctuation situations. 

    Compressors

    Appliances that use compressors for cooling are at potential risk when it comes to voltage fluctuations. Appliances like refrigerators and air conditioners need to have stabilizers to maintain a steady voltage input into the appliance or else they may malfunction or in worse condition may even breakdown.

    How do Stabilizers work? 

    The basic principle on which voltage stabilizer operates is performing buck and boost operation to maintain a steady voltage output over a varying input voltages.

    Depending upon the surge and dip in the input voltage the stabilizer performs a correction to increase or decrease voltage so as to maintain a steady balanced input voltage to an external electrical appliance. The stabilizers available today can be used either with single phase or multiple phases depending upon the requirement of the house. 

    The stabilizer uses a transformer at its core to perform the correction on the input voltages depending on the situation. Depending on the voltage which needs to be increased or decreased the transformer will either step up or step down the input voltage using difference with switching relay circuit or using windings to perform a range of corrections required in the voltage. 

    Based on this principle there are different types of voltage stabilizers which are explained in detail below: 

    Relay Type Voltage Stabilizers

    This type of voltage stabilizer utilizes the relays available by switching among them by connecting to the number of tapping in a transformer to perform the step up or step down operation as required depending on the input voltage. The circuit of such a type of stabilizer uses electrical components like rectifier, amplifier and microcontroller. 
    The circuit compares the output voltage with reference to the built-in input voltage and performs the necessary steps required by the circuit. If the voltage surges or dips in accordance to this reference voltage the relays switch and taps into the desired output. 
    These types of stabilizers are capable of performing low level corrections of voltages typically in the range of +15 percent and have an overall accuracy of + 5 percent. Due to their low correction capability they are mostly used for low rating electrical appliances in the residential space. They are small in size, handy, light weight. Due to their smaller capability the trade-off needs to be made of slow speed, low correction capacity, less durable and less reliable as they are not capable to handle massive voltage swings in either direction. 

    Servo Controlled Voltage Stabilizers

    They get the name of servo controlled due to the fact that they utilize servo mechanism for the correction in the voltage. The stabilizer is equipped with servo motor which enables them to do massive voltage corrections to the range of + 50 percent. The circuit of these stabilizers include servo motor, auto transformer, motor drivers and control circuits which uses micro controllers or microprocessors. 

    • The circuit is fed with the input voltage from the mains which is then referenced with the desired built-in input voltage. According to this reference the servo motor becomes active and arms the transformer. This enabling of the transformer depending upon the need of correction performs the boost or buck operation as per the requirement. Due to the presence of micro controllers in the circuit these stabilizers are capable of quick corrections and are more reliable. 
    • These stabilizers are armed with quick correction speeds and higher reliability with good precision outputs. But the trade-off involved with them is that a good amount of maintenance is involved with such stabilizers due to the presence of mechanical parts such as the motors and are prone to more checks than any other type of stabilizer. 


    Static Voltage Stabilizers

    As the word, Static, in the name suggests that there are no moving parts in this stabilizer. It employs a power electronic circuit to perform the voltage correction rather than focusing on moving parts such as relays or servo motors. The stabilizer has components like Insulated gate Bipolar transistor (IGBT) power converter, microprocessor and transformer. The IGBT power converter is controlled by the microprocessor to produce the required amount of voltage which is required as per the input voltage. This voltage is then sent to the transformer to produce a correct and steady output. This technique can generate an output with higher reliability and accuracy which is typically in the range of + 1 percent.

    • In simple terms the microprocessor detects the amount of drop in the voltage and sends that value to the IGBT converter to generate a voltage which is equal to the shortfall in the input voltage. This addition of the voltage is supplied by the IGBT converter and corrected voltage is then sent through the secondary and into the load. Similarly when the input voltage is higher than the required amount the microprocessor will send the excess number to the IGBT converter. The IGBT will then produce a voltage equal to the excess but this voltage will be in 180 degree out of phase with respect to the input voltage. The transformer will subtract this voltage from the input and will supply the corrected voltage into the mains. 
    • This makes these stabilizers very prominent among residential owners as they are more accurate, faster, more reliable, compact and durable all the more with reduced maintenance due to the elimination of moving parts in the appliance. 

    Frequently Asked Questions

    What does a stabilizer do?

    The basic principle on which voltage stabilizer operates is performing buck and boost operation to maintain a steady voltage output over a varying input voltages.

    Can stabilizer increase voltage?

    Stabilizers have transformers in them which can boost the voltage required by a particular level.

    Should I go for mainline or individual stabilizers?

    Mainline stabilizers control the voltage for the entire home but that makes it boost the electric bill. But individual stabilizers is for the appliances which are vulnerable to voltage ups and downs.

    If there are not many appliances that are on the verge of collapse to voltage fluctuations then one should go for individual stabilizers. As each stabilizers consumes electricity because they consume energy due to heat loss just like every other machine. 

    What is a mainline stabilizer?

    Mainline stabilizer is connected with the mains and protects all the appliances from the voltage fluctuations. 

    Does stabilizer reduce electricity bill?

    No, it only protects the appliances from the voltage fluctuations but like every other machine it consumes energy due to heat loss.

    Is copper windings better or aluminium in stabilizers?

    Copper is a better conductor then aluminium which saves energy due to less heat loss and power loss.

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