FAQ
Digital UPS
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1. What is a Digital UPS? How does it differ from a normal Inverter?

Digital UPS is nothing but a combination of UPS and Inverter. In a normal inverter you can connect only your electrical loads like Lightings, Fans etc. If you are trying to connect your computer in an inverter, during the power failure the computer may get rebooted. And there will not be any voltage protections in the case of an inverter. But in the case of a Home UPS you can have two provisions (a) normal mode and (b) UPS mode, selectable by an external switch. By selecting the UPS mode you will gat an extremely safe change over with a safe range of voltage protections and your computer even never blink. So, you can run your computer safely along with your lighting loads.

2. How should I select the right size inverter?

For selecting your inverter size, you have to list out all the equipments you want to get supported with your Home UPS. Add up the power rating of all these equipments and select the next size inverter.

For example, you required to connect 4 Tube lights 2Fans and 1 TV with your inverter.

Here , the expected watt consumption of the items will be,

Tube light = Appxt. 40W
CFL = Appxt 15 W
Fan = 80W Max.
TV = 100W Max.

Summing up the wattage of all these equipments will come around 420 W and it can be safely supported by a 600 VA Home UPS which is the very next size of inverter (ie 70 % of the Given VA ). V-Guard Provides you a flexible range of 600 to 1400 VA UPS which can serve a wide range of your needs.

3. Anything will happen if I overloaded my Digital UPS?

Nothing!! V-Guard Digital UPS is completely protected against the variations in the load level. If you are trying to overload the unit more than its capacity, it will try for 5 times restarting so that you can reduce the load in between. If the load remains the same after 5 restarts, then the unit will shutdown automatically. In case of ay short circuit your home UPS will sense it immediately and the unit wills enter in to immediate shutdown.

4. Can all my appliances and electrical goods work 100% correctly on your home UPS units?

Yes, V-Guard owns the latest DSP technology based Home UPSs which ensures you continuous power as long as the unit is with in the specific units capabilities.

5. What are the major differences between Sine wave and Square wave Inverters?

The Square wave and Sine wave is related to the shape of the output provided by an inverter. Our Normal Electrical power supply will always provide a Sine wave Supply, which is recommended for all types of Electrical appliances. A sine wave inverter will provide a pure sine wave output similar to our electricity board supply. But this type of inverter will be little costly than Square wave since the circuits and components used for such type will be some more critical.

A square wave Inverter will be much cheaper when compared to a Sine wave one. The out put wave form will be not a pure sine wave because of this reason , some devices may not work smoothly when connecting it with a square wave UPS.

Now, along with its Sine Wave Home UPSs, V-Guard brings you the latest technology in Square wave UPS to make it a Pseudo Sine wave which will have a reduced rate of interference in its output.

6. Can I use the Digital UPS for ay medical instruments?

V-Guard Digital UPS s is not designed for any medical equipment and we don’t guarantee that they will work to save your life. For such applications pls find inverters that are rated and tested for such applications.

7. Is there any idea about the draw backs of a square wave Inverter?

A modified square wave UPS will have much harmonic interference when compared to a Sine wave UPS. This might not be compatible with a certain kind of Electrical Equipments. For example in some fans if you are connecting it with a square wave inverter, it will produce some humming voice while sine wave Inverter will perform silently.

Most of the home equipments like Computers, Motor Driven appliances, Refrigerators, Printers TVs , Most of the stereos etc will work with out any problem with a square wave inverter. But appliances like digital clocks, some battery chargers, light dimmers etc will not be compatible with this type of inverters.

8. How vital the role of battery in selecting a Home UPS?

Battery comes as the heart of an inverter. No matter how efficient your inverter, a wrong selection in the battery quality will spoil the entire performance. A good quality battery with proper Ah capacity will provide you an uninterrupted power flow for a long period of time. Since the thirty percentage of your investment belongs to battery, a vigilant selection In this cadre is a must.

9. What maintenance my Home UPS required to have?

V-Guard home UPS doesn’t requires any maintenance for its working. The unit automatically recharges the batteries when power is restored via an inbuilt intelligent charger circuit. Our high quality deep cycle batteries are ready for a long run with out ay problem. But for proper working of the batteries you are requested to top up the battery water in correct period of time.

10. How long can I run the inverter on my batteries?

The backup time of the inverter is purely depends up on the Ah of the battery and the load connected to it. For example, 600 VA inverter with 150 Ah battery will run for approximately 2 Hrs with its full load while it will run for 2 days with out any problem if the load is only 15W.

11. How important is the charging current of the inverter for the life of the batteries?

Charging current is the prime factor which decides the life of a battery. After a long discharge the battery should be charged fully with proper voltage and current for the healthy and long life. For proper charging of the batteries, the recommended charging current must be 10% of the Ah of the battery and in the case of deep discharge; it should be 15% of the battery capacity (Ah).

V-Guard inverter provides you an intelligent charging circuit which senses the battery condition and pumps the required current for keeping the battery healthy. It gives an optional range of 8 – 16 A so that it can be connected to a wide range of batteries with out any problem.

12. Can I use the square wave UPS for computers and LCD TV`s?

Yes, V-Guard square wave UPS is designed to support computers and LCD TV`s. Your Computers and LCD TVs will run with out ay problem in our Square wave Home UPS.

13. Will the power go back to line at backup time?

No the power will never go back to line at backup time. The V-GUARD UPS has a protection to block the output power to return back to the mains at backup mode.

14. Which type of battery can I use with the inverter?

The inverter batteries are supposed to withstand a deep discharge cycles during its usage. So we recommend using Tubular batteries with V-Guard Home UPS. You can opt a wide range of capacities with optimum quality which V-Guard provides with your inverter.

15. What do you mean by a dedicated wiring for inverter? Is it mandatory to have a separate wiring for inverter line?

Your inverter is not supposed to connect to the mainline of your home. Instead it is recommended to have a separate line for the devices which is connected through the inverter. In this dedicated line pls avoid the connections of power equipments like AC which is larger than your inverter capacity. We recommend the dedicated wiring for your inverter to ensure the complaint free working and for the break free power feeding for your valuable equipments.

16. What I have to do when ever I met with a complaint in my Inverter?

Pls refer your user manual/warranty card for knowing the status of your inverter. Our intelligent audio and visual indication will help you out to know the status of your inverter as it is described in the manual. Some of the trouble can be get solved by yourself and is described in the warranty card. You can tell the status of your inverter easily to our engineers by referring the user instructions so the rest will be ensured.

For any complaints our efficient service network is ready to serve you over a phone call. V-Guard brings you the largest service network all over the country to keep you smiling always.