Your expensive computer and the more important data in it could be rendered useless due to power surges, spikes and brownouts. This is exactly why itís best to have a UPS or Uninterruptible Power Supply(which comes with a built-in voltage stabilizer blocking energy surges that could damage your computer) that is designed to firewall you against such power disturbances and more importantly, power up your computer even when there is no electricity. Here are a few tips that should help you make a more informed UPS purchasing decision.
This is a more common solution to those that need a constant source of power to their equipments should the power go out. The two main types of UPS systems are Standby and Line Interactive:
Standby Power System (SPS)
Provides surge-protected power to your equipment. However, in the event of a power irregularity or failure, the Standby UPS will switch to battery backup.
Online UPS System
Enhanced power protection with Automatic Voltage Regulation (AVR). The AVR allows the UPS to handle a more diverse range of power irregularities without necessarily having to go to battery mode. The system will then go to battery backup in the event of a power outage.
If you are a home user, go for the relatively cheaper SPS. The price of an online UPS is three to five times that of a standby UPS with the same power rating.
When purchasing a UPS, make sure the power rating is right for your equipment. If you buy one that is rated too low, you might run out of juice before you can power down. Most UPS devices are designed to provide 10 minutes of power. When selecting a UPS, you need to look at the VA rating or amps multiplied by voltage (120v). The amp rating should be listed on your computer. Add up the VA ratings of everything you will connect to the UPS, then purchase a UPS with a VA rating 20-25% higher. If you are a home PC user, look for a UPS with a 500-700 VA rating.
Donít expect your UPS to keep your PC running all day. Most UPSes are engineered to provide you a backup time of around 10 to 20 minutes. What they essentially do is save your work when there is a power outage and avoid an abrupt shutdown that could mess up your computer settings. Choose the UPS that meets your backup time demands.
Other features of a UPS
When you are buying a UPS, ask the vendor about more features than just power. This will help you in finding the UPS which has that one additional option that will help you in your buying decision. Of course, the best feature is Automatic Voltage Regulation (AVR) which isolates your PC from voltage fluctuations that lead to computer disturbances. A UPS with AVR conditions the incoming power before being fed to the PCís Switch Mode Power Supply (SMPS). Most UPSes also automatically initiate a scheduled shutdown sequence when the power is lost, after saving your work, to prevent damage to the computer hardware.
Obtain a guarantee before buying a UPS. Undue delays in replacements can affect business. Some vendors offer onsite warranties, where they replace the batteries at your place. If you are planning to use the UPS at work, go for a longer warranty term.
Donít compare SMPS and UPS rating
Even if the SMPS carries a high rating, your UPS neednít be competitive. A 600 VA rating on a UPS should be fine for most systems. So donít go on a VA shopping frenzy. Relax.
The general rule is three years. But if you are experiencing low backup times more frequently, you could get the battery replaced immediately if itís under warranty. If you are facing no problems, expect your battery to work for three years. Its advisable to buy replacement battery cartridges while you are buying the UPS. These cartridges will breathe new life into UPS systems suffering from expired or weak internal batteries. They cost about $30.
Contrary to the myth, its perfectly fine to leave the main switch on even when you are no longer working and the computer is shut down. However, its best to pair your UPS with a voltage stabilizer for additional safety.
The software provided with the UPS is not always accurate with its reports. So donít listen to it when it says your battery needs to be replaced even though youíve never experienced low backup times. These faulty reports shouldnít worry you because they may be trying to get you to purchase the companyís product more frequently (a common problem with print cartridges.) The software is good at its essential function of shutting down the PC properly and saving your work, but you may be the best option to determine whether its time to change the battery.
USAGE TIPS AND TRICKS
Do not overload the UPS by, for example, connecting external devices like the printer, scanner and the fax machine. NEVER plug a printer into the battery backup system. To optimize the charge of your batteries, you should discharge them completely at least once a month. And lastly, make sure the UPS is properly grounded all the time to prevent any electrical disasters.
Standby UPSs are available in the range of 300VA to 500VA for office use, and up to 2KVA to 3KVA for workstations and large servers. Inexpensive standby UPSs ranging in price from $50 to $125 are used by millions of users of personal computers all over the world.
UPS is the easiest way to protect your hardware and data. Many people think a surge protector suffices (an electrical device which includes a fuse which does not allow a power surge to harm sensitive devices such as computers), but actually they only offer limited protection against power spikes. For a better and more thorough protection, you need a UPS. It isnít intended to power you through a blackout though. For that, you would need a generator. Rather, a UPS will let you save your work and power down safely.
UPS for homes is needed specially for computers and accessories in India.The best UPS are brands like APC,Intex,iBall,Microtek which are listed in this guide that also has information on price,reviews,models,features.
Written by: Saurabh Srivastava
Date Published: 04/19/2015
UPS is an important device to use critical appliances like computers. This article gives amazing tips if you are buying a UPS.