As an added benefit,  UPS Systems also protect against power surges and disruptive line noise some of the many advantages of UPS System to protect and support every computer and electronics application—standby, line-interactive and on-line models.

Uninterruptible power supply (UPS) devices provide a continuous supply of electricity to equipment that is connected. A uninterruptible power supply is placed between utility power and the devices that are to receive UPS power if the main utility power is interrupted.

Though UPS devices have been very expensive throughout history, they have become very affordable over the last couple of decades. Now, UPS units are commonplace in home offices, data centers and businesses everywhere.

You can buy an uninterrupted power supply for a single computer that isn’t even strong enough to power the monitor, or huge UPS devices to power entire data centers for large companies.

UPS units are designed to provide power to equipment in the event of loss of mains supply, and to iron out some of the sags and surges in voltage that can cause damage.   They sit between the mains and your equipment, and contain batteries that are kept charged by the mains supply.  In the event of loss of mains power, the UPS unit supplies power to the connected load from power stored in the batteries.  UPS units are available in rack mount or tower presentation.

There is a limit to the amount of power stored in the batteries, and there are two things which determine how long the power will last

• the current draw of equipment (wattage), and 
• the capacity of the batteries (va)

When choosing a UPS for Computer systems there are several additional things to take into account.  The cost of UPS units increases with their capacity.   A UPS unit is often chosen to provide the minimum run time that will allow an orderly shutdown of the equipment.  This is because the stored data is usually considered to be more important than continued access.  Losing or dropping power to the computer in the middle of processing can have catastrophic effects on data and hardware.  To help protect both computer and the stored information, Unitek UPS are supplied with software that allows the UPS to communicate with the computer or server using a cable or via a network and tell it to shut down applications and save data in a safe and controlled manner.

The North American Blackout of 2003 was probably the single most impressive event that more recently has helped many people to reconsider their need for an uninterrupted power supply for their offices. Everywhere people have sensitive information that they don’t want to loose due to a storm or power outage.

There are also many applications where UPS devices are put in place to safeguard lives. In hospitals and other medical care facilities, uninterrupted power supplies are waiting in back up to run life support machines and all sorts of devices and systems that are keeping animals, plants and people as alive and healthy as possible.