POWER - UPS

 

Uninterruptible Power Supply

 

 

 

 

 

 

 

 

 

In the event of a sustained power failure, the UPS will provide sufficient battery power for your files to be saved and for the whole system to be shut down in an orderly manner. If an alternative power source such as a generator is available, the battery will provide sufficient power to keep your system running until the secondary supply is brought online. Most UPS’s also filter the power supply entering your computer system, limiting the detrimental effect of “spikes”, “noise” and other electrical disturbances.

Types

• Single-Conversion Systems – More efficient than double-conversion devices, but offer less protection. A good fit for loads with a higher tolerance for failure. The UPS stays on battery power until the AC input returns to normal tolerances or the battery runs out of power, whichever happens first. Two of the most popular single-conversion designs are standby and line-interactive:

• Standby Power System (SPS) – Most commonly used to protect POS equipment and single work stations. Standby UPSs allow IT equipment to run off utility power until the UPS detects a problem, at which point it switches to battery power.

• Line Interactive – Most commonly used UPS system for network environments. Used for small networks all the way up to enterprise applications. These UPS systems regulate input voltage up or down as necessary before allowing it to pass through to protected equipment.

• Double Conversion On-line UPS – Less efficient, but provides the highest levels of protection and are usually the standard choice for protecting mission-critical systems. The double-conversion process isolates critical loads from raw utility power completely, ensuring that IT equipment receives only clean, reliable electricity. In normal operation, a double-conversion UPS continually processes power twice.

• Multi-Mode Systems – Although they may be more expensive than either single or double conversion systems, they are the best choice for companies looking to achieve an optimal blend of both efficiency and protection. These combine features of both single- and double-conversion technologies and provide substantial improvements in both efficiency and reliability.