An Emergency Rescue Device (ERD) is an electronic and electrical apparatus that provides emergency power to the elevators with 3-phase power supply, when the input power source or mains power fails. An ERD differs from an auxiliary or emergency power system or standby generator in that it will provide near-instantaneous protection from input power interruptions, by supplying energy stored in batteries through a dedicated Power Bank.


  • Smooth running during Power going off
  • Get off at any floor without any sudden jerk
  • No fear and Claustrophobia of people inside
  • Panel inside the lift to show the status of power and its back up
  • GSM card inside for live data of the back up system, prompt service
  • No damage of elevators for sudden stop or excess current at start
  • Complete peace of mind for Senior Citizens and Medical Patients

Benefits of ERD System

1. Prevents Damages : The on-Backup run-time of most Diesel Generator backup is relatively sluggish (from 90 seconds till 5 minutes or more) as mostly DG back up enabled lifts take time to switch over. And mostly ends up damaging the lift’s electronic mechanisms in the long run.

2. Saves from Disaster : An ERD provides a seamless and uninterruptible electronically controlled power supply to the lifts in all scenarios including natural disasters like fire and Grid Failure, specially for high risers in urban landscape. Lift has become one of the most important facility in any building. But In case of fire it is the first thing to be shut and strictly asked “Not to be used”. Survivors on the upper floors can come down even if there is No electricity.

3. Protects life : Another major crisis situation in emergency situations is when people are stuck in closed environs, especially elevators. This creates a fear psychosis through claustrophobia where people feel choked even if there is proper ventilation in the lift. American Journal of Psychology mentions that this can aggravate serious and life threatening situation for the occupants, especially kids, pregnant women, elderly and disabled people, and a small time lapse of 30 seconds can lead to unpleasant situations like fainting of people to a serious situation that can trigger cardiac failure.

An ERD enabled lift eliminates these horrifying situation while providing disaster resilience to the buildings, users and operators.

No Generator or existing ARD system can provide smooth operation of elevators like an ERD during power failure.

ERD – Zero switching Time Which reduces the down time of lift

Because of this feature the down time of the lift is 90% reduced. Most often lift hae the maintenance issues because of regular power cut. The moment power cut happens. ARD comes into the picture which creates most of the fault in the working of lifts.

In the ERD the switching time is almost zero so the lifts do not stop at any occasion and the generators are not required at all so whenever power goes the lifts work smoothly without any jerks and that keeps the lift electronics and electrical systems running without any break so the sudden on/ off of the power is not faced by the Lifts and since there is no break in the power the smooth functioning removes the chances of lifts failures. The power quality supplied by the ERD is better than the power supplied by the Electricity companies as it is pure sine wave power and the frequency is exact 50Hz. The voltage supplied has the high stability compared to the utility supplier. The power quality supplied by the generator cant be compared by the ERD as it has a very stable and clean power as it is only catering to the lift load only.

Power outages are common, especially in developing nations like India. Frequent power cuts without any backup system can severely hamper the normal workflow in houses and workplaces. Even the most successful businesses complain about the detrimental impact of regular power outages on their businesses.

One can imagine the chaos at the workplaces, educational institutions, hospitals, or factories when the building suddenly loses power. The light turns off, machines and equipment stop running, and lives at various places screech to a sudden halt. Students amid an important exam, patients on the ventilator fighting for their lives, or a businessman finalizing the terms with a sought-after investor— everyone gets interrupted due to power cuts.

In the case of India, it was only recently that the small and medium industries began to recover from the debilitating impact of the pandemic and the ever-changing geopolitical situation. But, sweltering heat waves and long power cuts can paralyze the industry once again.

To avoid losses due to painfully frequent power cuts, the general public and businesses rely on two temporary solutions: Generators and UPS/inverters. However, over recent years, UPS inverters are increasingly being preferred over generators. Let’s deliberate on the factors making generators less preferable before considering the benefits of UPS inverters, causing them to be more popular among the public.

What makes generators less suitable for people and businesses?

Generators have been used in the past in the workplaces and homes as a source of backup energy. But in recent days, their use has been considerably reduced. UPS/inverters have already taken over the demand for smaller generators. Now is the time to replace bigger generators with heavy-duty UPS/inverters.

Here are all the reasons promoting this shift.

Manual start causes delays and interruption

In most cases, generators require a manual start, which causes work delays and interruption. It is very annoying to suddenly lose electricity when you are in the middle of an important presentation or working hard to finish a consignment.

High running cost

Generators run on fossil fuels: oil (kerosene, petrol, and diesel) and natural gas. The skyrocketing fossil fuel prices these days increase its running cost, making it a less feasible option economically.

Pollute the environment

The smoke released from the generators also harms the health and well-being of the human beings working around them. Poisonous gases like carbon monoxide are lethal to health.

Noisy operation

Generators also produce noise pollution. The annoying harmful noises can be bothersome when using generators in apartments or workplaces. Their consistent ear-shattering noise can make the environment tense and frustrate the workers wanting to concentrate on their job.

Make the surroundings hot

Generators produce a lot of heat. The cooling system and the heat exhaust ensure that the unit remains cool. But in the process, the surroundings become hotter. This added heat becomes unbearable in a country like India, where summers are already scorching.

Need space for the storage of fuel

Generators work with fossil fuels; you must always have fuel onsite to maintain the optimal fuel tank level. Therefore, they need additional space to store fossil fuels. Fossil fuels are inflammable, so they always carry a fire hazard.

Expensive maintenance

Generators are run by smaller components that need regular maintenance. Running it on gas corrodes its parts, causing performance degradation. Therefore, you need to replace old worn-out parts frequently. Plus, recurrent malfunctioning and regular cleaning to keep the unit in the best running condition makes upkeep extremely expensive. Moreover, the moving parts in a generator restrict its life to a maximum of 10 years.

What is a UPS/inverter?

A UPS, short for Uninterrupted Power Supply, is a system that provides uninterrupted power to the houses and workplaces in case of a power outage.

A UPS can be a single-phase or 3-phase configuration. It could be a small black box protecting your personal computer from sudden power dips and surges to a mega 500KVA system powering buildings and workplaces.

With a UPS/inverter, the electrical circuit automatically receives the power supply as soon as there is a blackout from the main.

What makes it more suitable to use as a backup power?

Long power interruptions have caused people to look for alternative options. With continuous technological improvement over the years, UPS has presented itself as a much superior option to a generator. Read on to know why!

Cause no interruption— automatically supply power to the AC load

Under normal conditions, the AC current powers the operations. Simultaneously, it charges the batteries storing the energy in the form of DC current. In case of a power outage, a UPS draws DC current stored in batteries and converts it to AC power. When this happens, a static switch stops the battery from charging while the inverter starts supplying the stored battery power to the AC load. This swift supply of power to the main reduces interruptions and normal workflow.

In heavy UPS systems, the advanced static switches are so efficient and responsive that they reduce the switching time to a bare minimum. Hence, computers and other electrical appliances do not face sudden shutdown or data loss.

Use lithium-ion batteries

The new inverter/USP technology using lithium-ion batteries is revolutionizing the power backup industry due to these batteries’ impressive history of stability and cycle life. They are more efficient than lead-acid batteries.

Lithium-ion batteries take 2 to 3 hours to charge, whereas lead-acid batteries take 8 to 10 hours. So in case of frequent power cuts, the Lithium-ion battery is always ready to swiftly recharge and give you ample backup energy to withstand the energy cut compared to Lead Acid.

Unlike lead-acid batteries’ average cycle life of 300-400 cycles, lithium-ion batteries have an average life of 2500 to 5000 cycles with a life span of 8 to 10 years—a true game-changer.

Overall, lithium-ion batteries are much more efficient in storing and discharging energy. Contrary to fossil fuels, lithium-ion batteries have neither special infrastructure nor storage requirements.

Powered by solar panels

India receives approximately 2600 to 3200 hours of solar energy every year. Sunlight is abundant and free as long as you can harness its power and use it for your benefit. The new Heavy Duty UPS technology runs on solar energy with the help of MPPT charge controller circuitry.

UPS running on solar energy means these UPS/inverters don’t need electricity or fossil fuels to create the backup power. In case of power outages during the day, solar energy coupled with battery power increases the backup time. Solar energy reduces the running cost of the UPS by discounting the charging cost, making it almost a free-of-cost energy compared to the existing generators.

Avoid dips and surges in the power supply

Heavy-duty UPS are designed to maintain the health of the appliances by protecting them against oddities like surges and dips in power supply from the main. Using technologies like “Soft Start System” and the “Automatic Voltage Regulation” prevents sudden inrush of current to the electrical appliances. The gradual voltage supply to the sensitive devices prevents jerk voltage or spikes. Moreover, the switching time is so swift that the appliances won’t stop operating during power stoppage.

No pollution (noise, air)

Pollution levels are spiking in India. Population explosion coupled with heavy reliance on fossil fuels is adding fuel to the fire. Heavy-duty UPS is a greener alternative to pollution-causing generators. Heavy-duty UPS does not need any designated room for storing fuel (diesel, petrol, kerosene). Hence, they carry no fire hazard even when used on commercial premises. Furthermore, they create no noise or pollution due.

Low maintenance cost

Unlike generators, the life of a UPS is very long. They can run for as long as 50 years without any extensive maintenance. The lithium-ion battery bank needs a replacement every eight to 10 years. Plus, contrary to regular upkeep and malfunctioning of spare parts in a generator, heavy-duty UPS needs maintenance once a year by service engineers. So, the overall cost of using a UPS is considerably low.

Low running cost

Heavy-duty UPS runs on batteries powered by solar energy. Compared with the running cost of generators, the cost of a heavy-duty UPS is one-fourth approximately.

Portable and compact design

One of the biggest benefits of UPS/inverters is that they are compact and smaller than generators. Even heavy-duty inverters are not sore to the eyes.


With the small generator market already taken over by UPS, new tech heavy-duty UPS/inverter is the next big thing on the horizon. With the mounting fuel costs, now is the rigth time to renounce the bigger generators running in the offices, factories, apartment complexes, etc., and shift to heavy-duty UPS.

In most parts of the world, summers are scorching hot; the temperature crosses 50 ֯C. As for the winter, it experiences bouts of extreme weather spells, often touching the -40 degree Celsius mark in some parts of the world.

Year-round frequent power cuts urge industrial and household users to seek help in power backups. Often energy in these power backup technologies is stored in batteries— lead acid batteries primarily.

Extreme changes in the outside weather impact the health and performance of Lead-acid batteries, including Tubular Lead Acid and VRLA (Valve Regulated Lead Acid), also called SMF (Sealed Maintenance Free) batteries. That’s why you frequently hear people complaining about their batteries malfunctioning even when the inverter is running in mint condition.

Extreme weather conditions result in reduced battery life, frequent need for water input, reduced battery storage solution, improper battery charge, and high electricity bills. Therefore, your batteries demand your attention during hot summers and frigid winters if you intend to use them for longer.

With the skyrocketing inflation rates, battery costs and electricity tariffs are increasing. Hence, sub-optimal battery charging and reduced battery life are a matter of concern. And knowing how temperature changes encroach on your battery charge and discharge is essential.

Read on to know about it and the possible solution too.

How does high temperature affect the battery?

To reach the heart of the problem, you must look at the battery composition. Lead-acid batteries are lead metal (Pb) plates immersed in water and sulfuric acid electrolyte. The composition of the electrolyte makes it suitable for electricity conduction.

Electrolytes are liquid; therefore, like other liquids, they change state in extreme weather. A higher temperature expands the battery electrolytes, and a drop in temperature contracts them. Imagine the state of your Lead-Acid battery when the temperature drops to zero— electrolytes in the battery are still water, but they have changed their state entirely (ice at zero degrees Celsius).

When the outside temperature, called ambient temperature, increases, the electrolytes’ movement increases, and the battery charges in lesser time, also requiring a lesser charging current too. Quite the contrary is the situation when the temperature drops. The battery needs more charging time to provide the same backup as it would in higher ambient temperatures.

But your inverter does not sense outside temperature nor detect the change in the state of the electrolytes. It supplies the same current and voltage, assuming the outside temperature is the same throughout the year. As a result, the battery fails to provide optimal power backup.

Hence, the fact is that batteries dispense ideal performance only at a controlled temperature. So, often nothing is wrong with your battery; the inverter fails to provide an optimum current for charging the batteries perfectly.

Do extreme outside temperatures impact the charging of Lead-Acid batteries?

Standard inverters are fed the information to charge batteries, considering the ambient temperature is 25 ֯C. So, even if the ambient temperature crosses 40 ֯C, the batteries will be charged as they would at 25 ֯C ambient temperature.

At 25 degrees Celsius, a boost voltage of 14.4V is set in the inverters to charge the Lead-Acid batteries, implying that if your battery is 12V, it will stop charging only after reaching 14.4 volts.

However, in no place around the world the outside temperature remains at 25◦C throughout the year. Therefore, one thing that regular inverters ignore is the ambient temperature.

At high ambient temperature, an ordinary inverter overcharges the battery. However, in low-temperature conditions, the inverter does not increase the boost voltage to charge it for a longer time to provide us with a proper backup. Here is why it happens:

The battery does not need a boost voltage of 14.4V when the ambient temperature is 40 ֯C. Instead, its requirement reduces to 4.13V to be fully charged. But a standard inverter continues to feed the battery with a high boost voltage of 14.4V. The higher boost voltage overcharges the battery, increasing its internal battery temperature. Resultantly, your battery requires more water intake and sometimes releases toxic fumes, which are detrimental to your health.

Overcharging at a higher boost voltage reduces battery life and increases electricity bills. Scientifically speaking, every 8◦C rise in the optimum charging temperature reduces the battery life by half.

Extreme ambient temperature impacts VRLA batteries impact more due to their temperature-sensitive technology— When the temperature increases beyond 30 degree Celsius, its cycle life reduce drastically.

Battery charging in low temperature

When the ambient temperature drops to zero, the battery does not charge fully due to frozen electrolytes. Due to repeated undercharging, a time comes when the battery does not charge beyond a certain level, which is less than a full-charge level. As a result, the battery requires a higher boost voltage of 14.85V at zero degrees Celsius, which is beyond the abilities of a normal inverter. Hence it continues to deliver a low boost voltage of 14.4V even at this ambient temperature. The only solution to this battery charging problem is ATC. You will learn about this revolutionary technology in the section below.

How does ATC Technology battery charging issues? 

We at Su-Vastika have official patents for ATC (Automatic Temperature Compensation) technology and equip our inverters with it. ATC is a unique feature integrated into high-quality Lead Acid batteries. ATC technology allows the inverter to sense the ambient temperature and manage its charging accordingly.

When the outside temperature is 40 ֯C, it reduces the Boost voltage to 14.13V. Similarly, and at zero degrees Celsius, due to ATC, various types of Lead-Acid batteries charge at a higher boost voltage of 14.85V. These voltage changes happen due to ambient temperature sensors that inform the inverter about the outside temperature.

The processor inside the inverter undergoes complex calculations and charges the battery at the required Boost Voltage. So, technically, your inverter increases and decreases the Boost voltage with the help of integrated ATC technology and charges the batteries according to the outside temperature.

Benefits of ATC technology for various Lead Acid Batteries

Here are some prominent benefits of ATC technology for various Lead-acid batteries

Increase battery backup time

The battery backup time reduces significantly when the temperature goes below 20 degrees Celsius. The ordinary UPS/inverter with no ATC does nothing to increase the battery storage solution. The ATC technology increases the backup time of your batteries by optimally charging the batteries at the right Boost voltage.

Reduce water topping requirement

ATC helps tubular batteries reduce the need for frequent water topping as it does not let the battery temperature rise beyond the safe limits.

Increase life cycles

In the case of VRLA batteries, ATC increases the cycle life by 20 percent by regulating the internal temperature of these batteries.

Reduce electricity bills

By avoiding overcharging and undercharging of batteries, the ATC helps save electricity and significantly reduces power bills. Batteries attain their full charge, and the battery life of inverters increases by a minimum of 1 year.

ATC also important for the Solar Charge Controller:

The ATC feature is very important for the Solar Charge Controller which takes the power from sun and either gives DC output or it can be used in the PCU or solar inverters. If the solar controller is used for the Lead Acid battery than same feature and advantages are required by the solar charge controller as required by the Inverter/UPS charger. Now a days still in E scooters people are using VRLA batteries and using the chargers without any ATC and if they use the charger with ATC their life and back up both will increase.


ATC (Automatic Temperature Technology) is a breakthrough technology that keeps the battery safe from temperature variations in the ambient temperature. It neither lets your battery draw a higher current and overcharge nor undercharges it. The ATC integrated into Heavy-duty UPS offers you reliable power backup for a longer time, reducing your electricity bills simultaneously.

As the uninterrupted supply of power for household and commercial use is becoming more uncertain, the demand for energy backup technologies such as UPS and inverters is skyrocketing. But pervasive adoption of energy backup devices also requires the manufacturers to integrate more efficient technologies such as bi-directional technology to provide the users with better and more efficient energy backup options.

Let’s have a look at what bi-directional technology is, why it is essential for a UPS, and how it protects your appliances from malfunctioning.

What is bi-directional technology?

A bi-directional technology is a technology that allows for two-way charging due to its ability of two-way conversion—from AC to DC and from DC to AC.

A bi-directional technology uses the same PWM (Pulse Width Modulation) based, MOSFET (metal–oxide–semiconductor field-effect transistor) circuit to charge and discharge the battery.

In the presence of electricity supply from the grid, it pulls the AC power from the grid and converts it into DC to charge UPS/inverter batteries. When the power supply from the grid disconnects, it takes DC power from the battery and transforms it into AC using the same circuit earlier used for charging.

In India, Su-Vastika Solar is the only company using bi-directional technology in its UPS/inverter systems.

Bi-directional technology in UPS

Bidirectional technology is opening up new roles and possibilities for the currently employed UPS/inverter systems.

Normally, the main power flows from the utility supply through the UPS/inverter to the load. Similarly, power from the network charges the battery; if needed, any output is fed to the load. And the inverter performs one-way conversion only, which is to convert DC to AC and supply power to the appliances in the absence of energy from the main’s supply.

In the presence of a bidirectional technology, the MOSFET circuit converts AC from the power mains into DC to charge the battery. In the absence of current from the mains supply, the same MOSFET converts DC stored in the battery into AC used by the appliances in the house.

For charging the battery, the bi-directional technology provides pure DC. It uses pure sine-wave output for discharging, which ultimately increases battery life.

How is bidirectional technology of paramount importance in an inverter?

A bi-directional technology is important for an inverter as it improves the efficiency of the system.

A switch-mode DC-to-AC inverter using dc-to-dc technology capable of interfacing a battery bank to the AC grid has many benefits over the traditional inverters.

Let’s look at the benefits of using bi-directional technology in a UPS inverter.

Reduce harmonics

A bidirectional inverter provides pure sine-wave output during DC to AC conversion. This is the same power supplied by the grid when electricity from the main supply is available. Pure since-wave reduces harmonics (the audible noise you hear in fans and fluorescent lights, etc.), prevents resetting your computers, and weird printouts. As a result, your data remains safe.

Makes your inverter more efficient

Bi-directional technology makes your inverter system more efficient because MOSFET-based technology is far better than any other electronic component used in ordinary inverters. As a result, a bi-directional inverter’s conversion power is much superior to inverters without bidirectional technology.

Cost reduction

With bi-directional technology, an inverter uses the same circuit for charging and discharge. Whereas, in ordinary inverters, more components are used, which makes the UPS/inverter system more expensive.

Maintain the health of your appliances

Harmonics stresses the electrical network and causes unwanted current and overeating of the appliances. The bi-directional technology reduces power losses, avoids deterioration of voltage quality supplied to the devices, and saves your appliances from misoperation. Resultantly, your load runs faster, cooler, and quieter.


Bi-directional technology is an advanced technology used by Su-Vastika solar in their UPS inverter systems. The technology reduces harmonics, improves the system’s efficiency and provides clean power to your appliances.

Frequent power cuts can disrupt your work and life. However, you cannot let it happen for long. Therefore, using power backup technologies such as inverter/UPS is becoming widespread to ensure an uninterrupted power supply.

But the choice of the right inverter/UPS technology and the power quality you get through them is an important consideration. One of the factors that can impact the quality of power from inverter/UPS is their waveform.

How are pure Sine wave inverter/UPS superior to square wave inverter/UPS?

Traditionally, power backup sources have been offering square wave output to power devices in the absence of grid power. But inverter/UPS with this waveform provide fluctuating power which is not suitable for operating all kinds of devices in the domestic and commercial setup. People also complain about annoying buzzing sound and overheating of their appliances (refrigerator, ovens, washing machines, etc.) when connected with a square wave inverter/UPS.

On the contrary, pure sine wave technology provides a clean, smooth, and regulated power supply similar to or superior in quality to grid power.

Before looking at the benefits of pure sine wave technology, let’s look at the main difference between pure sine wave vs square wave inverter/UPS.

Differences between pure sine-wave and square wave technology

Three major differences exist between a pure sine wave and square wave technology.

  1. Inverter/UPS cost
  2. Efficiency in running the connected appliances
  3. Waveform

Inverter/UPS cost

Square wave inverters/UPS are based on older technology and are simpler to manufacture. Pure sine-wave inverter/UPS are based on new technology and have more components; therefore, they are a little expensive.


Square wave technology produces choppy power, whereas the power output of a pure sine wave inverter/UPS mimics the grid-power quality. Therefore, the efficiency of a pure sine wave inverter/UPS to run the appliances is much higher.


A square wave inverter/UPS waveform mimics a square. On the contrary, a pure sine save is a continuous wave with smooth repetitive oscillation.

The one-time cost of a pure sine wave inverter/UPS is indeed higher than other inverters/UPS types, but if you deliberate on its long-term benefits, a pure sine wave inverter/UPS is a much better choice.

Below we describe the benefits of pure sine wave technology and why it is a superior choice over square wave inverter/UPS.


Extended power backup

An inefficient power backup system such as a square wave inverter/UPS increases your electricity bill due to power losses and the need for frequent recharging. Devices plugged into a square wave inverter/UPS also run at less than full capacity and use approximately 30% more power.

Conversely, a pure sine wave inverter/UPS minimizes power losses. It efficiently converts stored DC power into AC power for your appliance. As a result, you can use the power backup for an extended time.

Reduces harmonic distortion

Another benefit of using a pure sine-wave inverter/UPS UPS system is that it reduces harmonic distortion by providing clean power to your appliances.

In fact, if your equipment, such as fans, audio amplifiers, etc., are noisy and provide below-par performance, you can optimize their performance and reduce the noises by connecting them to an inverter/UPS with pure sine-wave technology.

Whereas, if you have a square wave inverter/UPS, get ready to experience annoying buzzing and humming sounds from appliances such as fans, fluorescent lights, etc.

Saves sensitive appliances from damage

In the case of pure sine wave technology, the changeover is very smooth. The voltage rises from zero and reaches the peak point without any fluctuation. It drops gradually again and instantaneously changes the polarity and effortlessly crosses the zero voltage level. This smooth rise and fall in the voltage levels do not let anything happen to even the most sensitive appliances. In fact, some appliances such as laser and motor-driven printers and medical equipment run properly only when provided with power from a pure sine wave power source.

On the contrary, when you have a square wave inverter/UPS, the voltage fluctuations and the changeover or switching time is dangerously high. Therefore, you can’t save your appliances from malfunctioning.

Better performance

Connecting your appliances with a pure sine wave inverter/UPS helps them display better performance.

The inductive load such as motors runs faster and cooler; the microwave oven cooks food more rapidly; fans, fluorescent lights, and LEDs glow brighter; refrigerators, TV, fax, and answering machines do not produce weird electrical noise.

When the devices work faster, they get the job done in less time and save energy. Therefore, if you want to receive improved performance and reduce electricity bills, we recommend you buy a pure sine wave inverter/UPS.

On the contrary, when your appliances are connected to a square wave inverter/UPS, you may experience the following issue.

  • LED bulbs get fused frequently
  • Smoke comes out from your fans after running for a long time
  • Fire breaks out in your house wiring due to heat generation by unclean power coming from a square wave inverter/UPS
  • Appliances such as oxygen concentrators will not work
  • Refrigerators, washing machines, and other expensive appliances may stop working after working for more than 300 hours on Inverter/UPS on square wave/trapezoidal waveform

Provides high-quality grid-like power

As your appliances run on the AC supply from the grid efficiently, the backup source must also provide the same or better quality power output. Pure sine wave inverter/UPS provides you with high-quality clean power. It helps run your appliances according to the manufacturer’s specifications. But, the same cannot be said for square wave inverters/UPS due to their jerky and less efficient power output.

Quick charging

A pure sine-wave inverter/UPS charges much faster than other types of inverter/UPS. This feature is especially beneficial when you live in an area with more frequent and prolonged power cuts. Also, in the case of commercial use, faster recharge ensures that elevators and lifts always function at their full capacity, and lifesaving equipment in hospitals is always available for patients without interruption.

Extend the life of your appliances

With pure sine wave technology, your appliances get the right amount of power and do not face sudden changeovers or fluctuations in power supply; they work better and for an extended period.

But if your devices are connected with a square wave inverter/UPS, you cannot prevent your systems from sudden crashes and malfunctions.

So, for anyone using laptops, desktops, and other digital equipment, a square wave inverter/UPS is a death sentence for their expensive machines.


You might have gathered that investing in a pure sine wave inverter/UPS makes more sense regardless of its higher cost. Unlike a square wave inverter/UPS, it is more efficient and improves the working and lifespan of your appliances.

A square wave inverter/UPS is also less reliable and unsafe for the appliances. So, it is never wise to bring home a square wave inverter/UPS even if the initial low cost entices you. You will ultimately pay more by repairing and replacing burnt and malfunctioning appliances.

A pure sine wave inverter/UPS made by leading manufacturers such as the Su-Vastika guarantees you never experience the annoying harmonics from your appliances. Plus, you always receive clean and stable power that does not harm your delicate devices.

What’s more, Su-Vastika’s heavy-duty pure sine wave inverter/UPS systems are suitable for powering everything—from lights and fans to air conditioners, elevators, and lifts.

In most parts of the world, domestic and industrial users face severe power shortages. In that scenario, they have no other option but to seek help from power backup technologies such as UPS (Uninterrupted Power Supply) and inverters.

Over the years, inverter/UPS technology has undergone multiple development phases. What you find today is much more efficient and of higher quality than was available a few years ago. One such improvement is the addition of isolation transformers to the USP/inverters.

What is an isolation transformer?

Isolation also referred to as galvanic isolation, implies that no direct path exists for the current to flow from the source to the load. An isolation transformer provides isolation between the electrical devices and the source powering these devices. In other words, with an isolation transformer, the output power circuit is electrically and physically isolated from the input power circuit. As a result, the isolation transformer provides safety to the users and the appliances.

Apart from isolation transformers, other types of transformer include Inverter duty transformers, Instrument transformers, and Inverter transformers or electronic transformers. However, this article focuses on isolation transformers, their benefits, and why they should be used in a UPS.

Why should you be using an isolation transformer in a UPS/inverter system?

As a standard practice, it is essential to have the right power solutions to power your domestic appliances or perform industrial operations. In this regard, a UPS/inverter is gaining huge popularity due to its ability to provide efficient, high-quality, and safe power solutions under imperfect power situations. However, we can further improve the working of a UPS/inverter system by embedding it with an isolation transformer. Here is why it is essential to have ups with isolation transformer.

Protect the equipment

Like any other transformer, an isolation transformer can also be developed as a step up transformer or a step down transformer to spike up or down the voltage. The galvanic isolation protects the equipment from unnecessary damage by detaching them from the powering alternating current.

The safety mechanism of an isolation transformer becomes more pronounced when there are unpredictable altered voltage disturbances. In such a situation, an isolation transformer separates the load from the circuit, thereby saving the appliances your UPS/inverter supplies current to.  Thus, all the sensitive equipment in your office or home will continue working without any data, operational, or financial loss.

Bestows robustness

UPS/inverters systems having isolation transformers are more flexible, efficient, and robust. Several types of equipment and appliances, such as computers and sensitive instruments, work better when your UPS/inverter has an isolation transformer in it. This is why there is a greater demand for isolation transformers in UPS/inverter systems.

Faultless voltage conversions

USP/inverters are used to power various appliances and equipment, but not all devices have the same voltage requirement. So, it is possible for the output voltage to not align with the voltage requirements of an appliance.

When the output voltage is more or less than the required voltage, voltage conversion is needed. Here comes the need for an isolation transformer. It will increase or decrease the output voltage to match the appliance requirement.

Safety against shocks

UPS/inverter systems provide high-frequency power to the equipment. However, equipment often lacks ground safety potential, leading to shocks and electrocution. In the presence of an isolation transformer, such damages can be avoided with the isolated safety mechanism. Even the equipment without ground safety gets sufficient protection.

Ensure the safety of the sensitive instrument

An isolation transformer is indispensable for the UPS/inverter systems providing backup supply to sensitive equipment such as heart monitors and other equipment in the hospital that must be running all the time.

Safe and easier maintenance

Servicing and maintaining an isolation transformer-based UPS/inverter system is much safer and easier as it provides safety against electrocution. Hence, the technicians can work on and test them without the fear of getting an electric shock.

Reduce fault current supply

Fault current and power issues are a common occurrence. However, an isolation transformer can minimize its effects by using Faraday shields.  And you always get an adequate and perfect power supply from your UPS, thereby ensuring that all the appliances are working properly.

Harmonics management

Noises and harmonics variations are not unheard-of in power supply. When the UPS provides output current at various frequencies, facing noise disturbances is quite possible. As a result, the end use power quality is affected. Here you must note that noise disturbances refer to electric and magnetic field disturbances, not sound disturbances. These noise disturbances can significantly impact the reliability of sensitive equipment such as those used in the medical field. Using a UPS/System with an isolation transformer is hailed for its ability to reduce noise disturbances.

Isolated vs. non-isolated transformer

An isolated transformer separates the circuit from the AC line. It is earthed, housed at a safe location, and connected to a power supply through a short earthed connection. As a result, if the user comes in contact with any part of the electrical circuit, the current does not find any return path through the user, thereby reducing the electrocution hazard.

You can use the connected appliances in wet, damp, indoor, and outdoor situations without any risk of electrocution even when the connected tool or appliance is not earthed

The case of a non-isolated transformer is quite the opposite. The circuit is not shielded from the AC line; hence electrocution is possible.


An isolation transformer makes working with AC-powered equipment much safer. Embedding an isolation transformer in your UPS/inverter system makes it a more efficient and safer option for powering sensitive instruments in domestic and industrial settings. Now that you know the immense advantages of an isolation transformer-based UPS/inverter, always consider this technology and buy the UPS from a trusted isolation transformer manufacturer such as Su-Vastika Solar. The company has been developing reliable heavy-duty inverters/UPS with isolation transformers for various domestic and industrial applications.