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There are three simple methods:
Never overload your UPS.
Never connect any home electronic devices such as cooling fan to your UPS. This may cause malfunction of your UPS.
Discharge the battery in a consistent interval. The best way to do it is once a month or once two months. The simplest discharge way is to turn on the UPS without connecting the mains.

If your IT system is made up 4 computers, without a monitor, an approximate consumption of 300 VA per unit can be calculated, therefore, you must multiply the 4 computers by 300 VA each, whenever you do not have a monitor, a total consumption of 1200 VA is obtained. MUST recommend backup ups EK series 500-3000va. Very suitable with cheap price.

The Uninterruptible Power Supply Systems (UPS) are not, necessary, but rather basic. Security needs demand that we protect our systems exhaustively. More and more, information technology systems are an essential element of the company in all areas.

The functionality of a UPS consists in providing auxiliary power for the purpose of preserving precious data. With a laser printer, in the event of a mishap in the electrical supply, the printing tasks remain queued in the print spool and are naturally recovered once the mishap is gone.
Nevertheless, for large printing cycles involving publishing houses, graphics and copiers in general, it is best to protect the data in order to cushion the large data transmission time to the printer memory.

Every UPS will supply power to a load (such as a computer, telephone switch or medical equipment) when mains power fails, it may also condition the power and prevent spikes, brownouts, interference and other unwanted problems from reaching the supported equipment.

A UPS typically includes the battery and battery charger in one standalone unit. A UPS system also can have communication with the equipment that it is powering, letting the equipment know that it is operating on standby, giving it shutdown warning or communicating with the human in the loop. Inverters typically don’t have this capability.

An inverter simply converts DC (battery) power into AC power and then passes it along to connected equipment. An inverter/charger does the same thing, except that it is connected to an AC power source to continuously charge the attached batteries when AC utility power is available. In the case of a power outage, the inverter will automatically switch to battery power to provide power to connected equipment.

A resistive load does not require extra power upon startup, whereas an inductive load experiences an inrush current upon startup and requires more power during the first few seconds/cycles of startup.

Phases of a UPS, such as a single-phase UPS or a three-phase UPS, describe the number of electrical phases that a UPS receives and transmits.

Electrical utilities generate three-phase power because that is the most efficient way to transport electricity over long distances. And for larger power consumers, such as large data centers, industrial manufacturing and hospitals, the power stays as three-phase, requiring a three-phase UPS. For smaller power consumers, including residential or office buildings and most schools, the power is converted to single-phase power.

Some applications contain a mix of single-phase and three-phase equipment and require a UPS that can protect both.

The main advantages of using a modular UPS system is the ability to increase UPS power as and when required. The UPS power modules are hot swappable and can be added at any future time. Modular systems will normally accept one or more additional power modules to achieve their rated capacity, making them inherently “N+1″ providing redundancy.

Other advantages of modular UPS systems include efficiency and repair time. A UPS system operates at highest efficiency when it is near its maximum rated capacity. Repair can be achieved by replacing an entire power module rather than fault finding down to component level. A customer could keep a spare power module on site enabling site engineers to correct a faulty unit.

Small to medium UPS batteries generally have a 3-5 year design life, this can vary dependant on the number and depth of discharges together with the environmental conditions i.e. temperature.

For larger UPS systems batteries with an 5-10 year design life are generally used

We advise that the UPS batteries are checked/tested/discharged periodically to ensure that they still functioning correctly.

UPS battery back-up times can vary from 2 minutes, to many hours. It all depends on what you need.
The main question to ask before deciding on the UPS backup time is:

In the event of a long power outage “what do we want to do”?

Simply shut down the servers and wait until power is restored. In which case “how long does it take to shut down the critical equipment?”
Have a longer backup time in order to shut down a large database, or manually shut down certain applications. In which case “how long does it take?”
Keep key personnel, the telephone system or communications to remote sites operational. In this case a longer backup time will be required. “How long?”

Have a look at our products fits your business needs.