3 PHASE 10KVA / 20KVA / 30KVA



3 PHASE 10KVA / 20KVA / 30KVA

Why use a heavy duty UPS?

UPS is short for Uninterruptible Power Supply, as it allows electrical load to keep running and provides power in the event of a power failure.

A UPS system utilizes DC power stored in the battery as its backup source. During normal operation, the power from AC mains is directly supplied to the output through a static transfer switch. At the same time, the AC is converted to DC to charge battery. When there is a power outage and primary supply breaks, the battery stops charging and the static switch transfers the output line to the inverter side very quickly. At the same time, the inverter starts drawing current from the battery which is then supplied to the AC load.

Su-vastika uses advanced static switches in its Heavy Duty UPS that reduces switching time to just 5ms, which is fast enough to keep a computer and majority of sensitive equipment from shutting down.

Because of its strong R&D and experience of its able Mentor, Su-vastika understands the power back up need of its customers across industries well.

It has designed a range of state-of-the-art Heavy-Duty UPS starting from 10KVA to 250KVA that provides

  • Protection to your machinery / appliances during power surges
  • High energy storage
  • Fast switching technology
  • Negligible maintenance cost
  • Lifelong usage with long lasting batteries

Fast switching technology allows switches
between the main power supply and battery
backup in just milliseconds!

Powerful enough to protect and support large commercial and industrial establishments the Heavy Duty UPS range is your go to powerback up option.

What to know before buying heavy duty UPS

Who can use a Heavy Duty UPS?

Anyone who needs to run High Capacity Loads where generators are being used can run the same load on the Heavy Duty UPS. There is a misconception that big Generators of 100 KW 3 Phase Loads or more can’t be replaced with the UPS.

However, our Heavy-Duty UPS range is being used in almost every industry imaginable. From the hospital industry, to the IT industry, anywhere power backup is required, our backup solutions are available from 20KW to 500KW range.

Some other industries that use Su-vastika’s Heavy Duty UPS are:

  • Schools/Education Facilities
  • Gyms and Health Clubs
  • Farm Houses
  • Multiple Floor Houses
  • Showrooms
  • Nursing Homes
  • Restaurants
  • Residential complexes,
  • Malls
  • Hospitals
  • Coffee Shops
  • Commercial Offices
  • Cyber Cafes
  • Design Houses


What is the difference between a Heavy-Duty UPS and a regular UPS?

A Heavy-Duty UPS runs loads from 10KVA to 250KVA usually in an industrial set up, whereas a Home UPS and Commercial UPS runs loads from 2KVA and 2.5 to 5KVA, respectively.

A Heavy-Duty UPS is designed to provide long backup times starting from 1 hour to 24 hours. This can be extended by using solar power as additional backup in conjunction. A regular UPS on the other hand provides short backup times of 15 to 45 minutes.

What is the life of the Heavy-Duty UPS compared to the Generator?

The Heavy-Duty UPS can work smoothly for 50 years with very little maintenance.

UPS requires maintenance every 3 months
Battery Bank is changed every 2 to 5 years depending on usage.

The Generator on the other hand has a life span of only 10 years and requires regular maintenance on an hourly basis because of its moving parts.

Is it necessary to keep an attendant on site?

Unlike a Generator where an attendant is mandatory to be on duty, for heavy duty UPS we don’t recommend having any attendant. However, we offer training in case you opt to keep an attendant.

Is the UPS system as noisy and polluting as the Generator?

Not at all. Generators are notorious for being noisy and causing a lot of pollution due to diesel usage, however our Heavy-Duty UPS works on batteries and has smooth noiseless operation and is completely pollution free.

Can I use this UPS with my existing Generator?

Yes, it is compatible with generators. It can be used with the Generator in several ways.

  • As a secondary power source for fail safe operations or if long back up is required. The Generator can be installed at the back of the Heavy-Duty UPS, with a custom feature, that automatically switches the generator on in case of low battery. This allows you to keep your devices running on the generator, while the Heavy-Duty UPS charges simultaneously.
  • As a power supply to charge batteries. Our Heavy-Duty UPS can withstand a generator’s uneven power supply and convert this power to a healthy, regulated power supply that charges your batteries.
  • As a temporary power backup source. In the rare case of a complete battery discharge during a power outage, our advanced feature (optional) will automatically put your load onto the generator with zero switch-over time, bypassing the inverter temporarily, and allowing your existing generator to act as an extra backup source. The bypass is so fast you won’t even notice!

How safe is the Heavy-Duty UPS compared to the Generator?

Storing fuel for Generators in commercial premises can be hazardous, as it can lead to fire in the premises, especially if the safety precautions taken are not adequate.
The Heavy-Duty UPS is safe and does not have any fire risk as it runs on batteries.

How cost-effective is the Heavy-Duty UPS compared to the Generator?

The initial investment on machinery for both Heavy Duty UPS and Generator is almost same, however there is a significant difference in running cost, maintenance cost & effort.

  • Running Cost: The Heavy-Duty UPS runs on batteries while the generator runs on diesel or petrol. If used for the same number of hours/day in a year, the cost of running the generator is almost six times more than the UPS!
  • Maintenance Cost: The Heavy-Duty UPS running on Sealed Maintenance Free batteries (SMF) requires almost no maintenance compared to generators which require maintenance every 300 running hours by trained technicians.
  • Manual Effort: Having trained technicians to carry out regular maintenance every 3000 hours increases the cost of running a generator further. The Heavy-Duty UPS on the other hand has mandatory checks by service engineers just once a year.

infrastructure and maintenance

What infrastructure is required?

Infrastructure required depends on the type of battery being used and capacity. Smaller backup load requirements will require smaller spaces.

Sufficient ventilation for heat dissipation is needed for Lead Acid Batteries.
There are no special requirements for Lithium and Sealed VRLA batteries.

The optimum temperature for all batteries is 40°C to 50°C. However, they can also withstand temperatures ranging from -10°C to 50°C.

What is maintenance required? Is servicing needed?

The Heavy Duty UPS is designed to require little to no maintenance. However, at Su-vastika, we provide services to keep your products in topnotch condition:

An AMC contract to service your UPS every 3 months, and battery upkeep is done regularly depending on the type of battery bank used. Our systems come with an online monitoring feature, and GSM and WIFI compatible applications that monitor the UPS and battery life. In case of any issues, alerts will be sent automatically, and the stored data can be checked on the display of the UPS.

Training a Certified Electrician at your site, for maintenance of the Heavy-Duty UPS.

What infrastructure is required?

Infrastructure required depends on the type of battery being used and capacity. Smaller backup load requirements will require smaller spaces.

Sufficient ventilation for heat dissipation is needed for Lead Acid Batteries.
There are no special requirements for Lithium and Sealed VRLA batteries.

The optimum temperature for all batteries is 40°C to 50°C. However, they can also withstand temperatures ranging from -10°C to 50°C.

I have sensitive devices. Will they be safe if I use Heavy-Duty UPS?

Yes. Absolutely. Our Heavy-Duty UPS will not just keep your sensitive appliances safe, but it will actively protect them as well. We have developed technologies like Soft Start System and Automatic Voltage Regulation specifically with your needs in mind.

Soft Start System: Unlike traditional inverters, that allow a sudden inrush of current, which can be harmful to your machinery, our Heavy-Duty UPS gives power when the appliances are started for the first time. It gives voltage gradually so that your sensitive devices don’t get any jerk voltage or spikes. Switching time is so quick that the equipment will not stop if the mains power is disconnected. The soft start system increases and maintains the life of the appliances.

Automatic Voltage Regulation: Voltage fluctuations are common occurrences. Whenever there is Low Supply voltage or High Supply voltage, and supply rises or drops below the Safe voltage range, our Heavy Duty UPS seamlessly switches to the battery power, keeping all your machinery and equipment safe.

Moreover, the power quality produced in Battery Mode is better than the power quality provided by the electricity distribution companies. THD is also always controlled by the Heavy Duty UPS on site and Neutral and Earth is also provided carefully at the time of installation so that no shock can be generated on any part of the system.

Getting started with your heavy - duty ups

Do I need to manually start the system to provide backup?

No, everything is automatic, designed with your ease and convenience in mind. Whether the power fails, voltage falls below the safety limit or voltage increases beyond safety limits, the Heavy Duty UPS works automatically without any manual intervention. It also records all logs in its system and on the remote monitoring system.

Does the UPS need power from mains to start working for the first time?

No, we have ensured that our Cold Start technology, can start the Heavy-Duty UPS in battery mode, in the case of failure of on site.

What is the difference in the models offered by Su-vastika?

Product differentiation is based on the amount of load the product is equipped to handle along with the backup time requirements. Model size and battery capacity is calculated by our experts based on customer requirements.

For example: A Lithium Battery Bank can be recommended to a customer who wants to save space and have fast charging. Experts from Su-vastika will recommend the right product for you depending on your power backup requirement.

technical safety

What happens in case of a technical issue with the UPS?

Technical glitches are not likely to occur, However, we are prepared for all types of situations. In case a glitch does happen:

Our Online monitoring solution will automatically be made aware of a failure, a customer call will be logged, and service engineer will be informed with automatic response system and will try to resolve the call ASAP.

The UPS has a switch, which when pressed manually, bypasses the inverter. Pressing this button would now connect your devices directly to mains electrical supply.

For sensitive industry needs, Su-vastika also offers custom solutions for fully automatic switch (Static Switch) based Heavy Duty UPS on request.

When industrial heavy equipment is running on 3 phase UPS, is it safe for the person operating it?

Yes absolutely. Our built-in Galvanic Isolation System protects against electric shock and suppresses any harmful electrical noise. Our UPS system also provides better power quality than what is received from the mains supply.

What is the maximum rush load the UPS can take?

The Heavy-Duty UPS has a high Crest Factor of 4:1, which means that it can take almost 4 times the more load for the High inrush current required by some heavy machinery or motors that take very high surge current when they are starting for the first time.

The largest UPS we have is a single Heavy-Duty UPS of 250 KVA. This can be further augmented depending upon the individual requirements. It can easily run 1MW load if 4 units are installed on site. Distributing the load to multiple UPS systems, we can ensure that the UPS generates required output voltage effectively and all your devices keep running in the event of a power failure.

An example of this is:
If you have A/Cs running in 3 separate rooms, you can have them run on three smaller UPS systems instead of one UPS system. This will ensure smooth operation. It is also safer in case of a technical issue in one UPS, as your other A/Cs will keep running on the other UPS systems.

Can I control the UPS wirelessly?

Yes. Our Heavy-Duty UPS systems have Wi-Fi and GSM connectivity. Our application will monitor your UPS and send regular reports to Su-vastika technicians. In case of any issues, an automatic alert will be sent, and a service call will be made.

battery backup-up infromation & care

What type of battery would I need?

Our Heavy-Duty UPS comes with 4 types of batteries which can be selected depending on your load back up time as well as battery life.

  • Sealed Maintenance Free VRLA Battery Bank (12V size Monoblock)
  • Lithium Battery Bank (can be designed for any voltage depending upon the DC size of Heavy-duty UPS range)
  • Tubular Lead Acid Battery bank
  • Tubular VRLA battery Bank (2 Volts for High back up operations)

Can we use battery in any size?

Yes, our Heavy-Duty UPS is equipped to control charging of types and sizes of batteries depending upon load & backup requirement of the user.

Different types of battery banks need different types of charging controls. Our Heavy-Duty UPS has advanced software and inbuilt algorithms that can set the charging current, and other parameters required by a particular battery bank type.

We can install batteries of any size depending on your load and backup requirements. Our experts at Su-vastika will recommend the right size for you

For the Lithium battery bank we need to set the charging as well as temperature based charging control so that we can save the battery from any wear and tear and maximum life can be gained from the battery bank.

What can I do if I need to increase backup time?

There are 2 primary factors that determine backup time: total load of the machines that require backup, and duration of the backup, or in other words- number of batteries to be installed.

To increase backup time:
  • More battery packs can be added and the battery bank can be designed in parallel
  • Solar generated power can be combined with the existing system



How often does the battery need replacing?

Battery life depends on its usage. In practical terms, the power failure in a particular area will define the battery life of the system. Depending on the battery type, if the power failure happens occasionally and the duration is also very less then:

Tubular battery bank and Lithium can last for more than 10 years
Other battery systems, if properly maintained, can last up to 5 years.

Our Heavy-Duty UPS is also equipped to prolong battery life and manage battery health:

  • In case of Tubular and SMF batteries our advanced Six Stage Charging technology charges the battery in 6 stages, which helps avoid over-heating and loss of water-topping.
  • The UPS prevents battery from being fully discharged, which extends battery life.
  • Our ATC technology keeps the battery safe from temperature variations happening around the system

Su-vastika will always provide you with information about battery upkeep and battery life, which other companies will not be able to.

Our Online monitoring System will keep a track of the Battery Bank usage and send an alert when the replacement of the battery bank is required.

Do I need to replace my UPS with the same brand of batteries?

No. It is not necessary to replace the batteries with the same brand. However, the entire battery bank will be replaced together when required. The BMS can also be used along with the VRLA and Tubular battery bank to enhance battery life.

Battery Management System is an advanced system that monitors and maintains battery health, making intelligent adjustments to enhance battery life

Do batteries get affected by extreme weather conditions and require special care?

No, our patented ATC technology can sense outside temperature and regulate battery charging, to protect your battery from overcharging or undercharging.

High temperatures and very low temperatures can affect the Lithium Battery Life. To prevent this we have written software in the Heavy- Duty UPS System which can control the Lithium Battery bank according to ambient temperature, which helps improve safety and prolong battery life of Lithium Battery Bank.

How long does a battery take to recharge after a power outage?

For short power outages batteries do not get discharged very quickly and will recharge extremely fast as well.

For power outages longer than 3 hours battery charging times depend on the battery type:

  • Lithium batteries charge fully in 4 hours and 50% of its charging can be done in 1 hour.
  • SMF and Tubular Lead Acid batteries take 8 to 10 hours to fully charge, and 3 to 4 hours to charge up to 50% capacity. If the Mains breakdown is small then the battery discharge is very less so that they get charged fast to give the 100 percent back up. Generally the low battery levels do not go to the lowest level and discharge of the battery is only up to 50 percent so the time required to refill the same is also very less and the top of charge take place within 1 to 3 hours to the full charge of battery bank.

The Heavy-Duty UPS is solar compatible.

Is charging batteries with solar power faster than charging with electricity?

Battery charging will depend on the size of the solar panels installed and the size of the solar charge controller. In this case the Heavy-Duty behaves like an Off Grid Solar UPS and it can cutoff the mains supply and run completely on solar and batteries. This

  • Saves the cost of electricity
  • Increases the backup time
  • Charges the batteries simultaneously
  • Has faster charging than electricity due to Pure DC charging

Therefore, a Lithium Battery which would take 4 to 5 hours to charge with mains power, would take only 3 hours to charge with solar power.




10KVA / 20KVA/ 30KVA







key features of the heavy duty UPS

Automatic Voltage Regulation

When there is Low Supply voltage or High Supply voltage, and supply rises or drops below the Safe voltage range, the Heavy Duty UPS, seamlessly switches to battery power, keeping all your machinery and equipment safe.

Soft Start System

This advanced technology gradually increases voltage to let your machinery ease-in. Preventing electrical and mechanical shocks to the sensitive and costly machinery in your facility.

Cold Start System

This specially designed feature starts the inverter in Battery Mode, in the absence of power from mains (grid power).

Automatic Temperature Compensation (ATC)

Designed for extreme weather conditions, the Heavy-Duty UPS has ambient sensor and antenna right on it. With its (ATC), built into the microprocessor, it senses the temperature around it and makes intelligent adjustments.

Automatic Voltage Regulation

The Heavy-Duty UPS is built to keep your battery healthy. It is designed for efficient charging and discharging , hence keeping the battery running longer with reduced upkeep.


The Heavy-Duty UPS can take up to 4 times its load capacity. You can rely on it to support your facility and machinery during a voltage spike. It also intelligently reminds you to turn off the extra machinery so the load is reduced.

Solar Compatible

The Heavy-Duty UPS system is solar compatible. Solar power can be used as a secondary power source or as a backup power source in case of battery discharge.

Generator Compatible

The Heavy-Duty UPS can normalise and adapt to voltage fluctuations and is compatible with your existing generator, and is the perfect option to pair with Domestic Generators.

Low Cost

The Heavy-Duty UPS is extremely cost efficient and has a low cost of set up and maintenance, compared to the generator.

No Pollution

Unlike generators, the Heavy-Duty UPS runs on batteries and is therefore completely non-polluting, no-fumes, no-noise and can be comfortably placed in any commercial facility.

Technical Specification

TYPE 3 Phase in - 3 Phase out
SERIES Pure Sine Wave Inverter
TECHNOLOGY DSP based PWM technology using IGBT
RATINGS 10kVA -20kVA - 25kVA - 30kVA
MODEL NO. CL3310K - CL3320K - CL3325K - CL3330K
INPUT SUPPLY 3 Phase 4 Wire
VOLTAGE REGULATION 230 V ± 2% (P-N), 400 V ± 2% (P-P)
TRANSIENT RESPONSE Recovery to ± 5% within 1.5 Cycles
OVERLOAD HANDLING CAPACITY 110% for 5 Mins, 150% for 15 Secs, 200% -for 4 Secs, 300% for 2 Secs
BATTERY CHARGING CURRENT 3A ± 0.5A to 20A ± 0.5A - 10A ± 0.5A to 150A ± 2.0A
OPERATING SYSTEM Windows 95/98/NT/2000/XP/2003 Server
RELATIVE HUMIDITY Max 95% non - condensing
INDICATIONS AND ALARMS Backlite 16 x 2 Lines LCD Screen with Indication, Alarms & Remedy