AARGEE EQUIPMENTS PVT.LTD

	What is a UPS? An UPS (Uninterruptible Power Supply) is an electronic equipment being installed between the mains power and the load (load may be Computers or other equipments). This UPS extend a clean quality power to the load besides supplying power continuously for the equipments connected, even when the mains power supply fails.	TOP
	How do you pronounce "UPS"? Most of the literature seems to favor "you pee ess"	TOP
	How can it help me? A UPS has internal electronic control circuits to give a clean power as output. Clean power means a stable frequency without any harmonic distortion. Advantages: Computers will not stop because of power failure. Sensitive equipments will continue to work even though the mains power is erratic. No rebooting and no data loss. No stop of work even if power fails.	TOP
	What sort of stuff does a UPS do? A UPS traditionally can perform the following functions: Absorb relatively small power surges. Smooth out noisy power sources. Continue to provide power to equipment during line sags. Provide power for some time after a blackout has occurred. In addition, some UPS or UPS/software combinations provide the following functions: Automatic shutdown of equipment during long power outages. Monitoring and logging of the status of the power supply. Display the Voltage/Current draw of the equipment. Restart equipment after a long power outage. Display the voltage currently on the line. Provide alarms on certain error conditions. Provide short circuit protection.	TOP
	How long can equipment on a UPS keep running after the power goes? How big a UPS do you have and what kind of equipment does it protect? For most typical computer workstations, one might have a UPS that was rated to keep the machine alive through a 15 minute power loss. If you need a machine to survive hours without power should probably look at a more robust power backup solution. Even if a UPS has a very small load, it must still operate it's DC (battery) to AC converter, which costs power.	TOP
	Given the same vendor claims, how can I tell a "good" quality UPS from a "poor" quality UPS? Some properties you might look for are: Sinusoidal power output. In general, the closer the AC output of the UPS is to a sine wave, the better it is for your equipment. Many UPS units, especially the cheaper ones, deviate a great deal from a sinusoidal output. Some of them generate square waves. Does the UPS have a manual bypass switch? If the UPS is broken or is being serviced, can you pass power through it to your equipment? The last thing you want is for a broken UPS to be the cause of extra downtime. The more information about a UPS's operation you can get from watching the unit itself, the better. How much power (or percentage load) the equipment is drawing, how much battery life is left and indications of the input power quality are all very useful. Some newer UPS's can communicate with their monitoring software via network connection and SNMP! This is wonderful if your network is on a UPS! Also, beware, I have heard of dealers advertising "Network UPS" monitoring where the network is the normal serial connection (no SLIP or PPP). Does the UPS vendor offer support/maintenance contracts. If don't even offer them, I would suspect the quality of the equipment. If you do have a UPS that does not output a sinusoidal waveform, some manufacturers strongly urge you to not put a surge protector between the UPS and the computer. The surge protector might mistake the non-sine waveform as a power surge and try to send it to ground. This could be bad for your UPS.	TOP
	If the power is out for a long time, I would like to have my computer automatically shut itself down gracefully before the UPS batteries die. Can I do this? Yes. Most UPS manufacturers support software that will do this for some UPS's on at least some platforms. Ask your Aargee UPS vendor (ups@aargee.net) for details.	TOP