Uninterruptible power supply question?

Question

Hi, Im looking for a Uninterruptible power supply, but I dont understand the watts part that each of them have. Some say 300, 500, or 1000 ect. I dont want to buy one that wont work with the desktop. Any recommendations and info you could give me? I heard something also about if you use more than the watts it says it will overload or something like that.

Thanks, Mike.

Answer 1

UPS are good way to protect you machine from power failure.
The higher the watts (VA) the longer the UPS will keep you computer powered after a power failure.

Get a UPS that is rated in VA not Watts if possible.

Watts = current (I) or AMPS x Volts.

So if you PC draws ONE amp at 240v then it is rated at 240Watts. which almost the same as VA, don't worry about the difference.

The thing is that a UPS main function is to power a device long enough so that it can be power down in a controlled manner, most if not all UPS have a connection either by USB or serial cable via some software to do this.

So for a Desktop computer a 300VA UPS will do, if you use the software to power down automatically after a power failure.

On the other hand, if you are using a UPS to power a mission critical server, use a very large UPS 2000VA this will hopefully power a single server for about 3- 5 hours and hopefully power is restored by then. Most large companies use very large UPS 10000VA and a generator to solve this problem.

Answer 2

I got two UPS one each for my desktop PCs. I only use 500 VA as they are reasonable in price for a home setting. The runtime is about 2 minutes from the cut in supply just enough time to shut down the pc. It will auto save your documents for a graceful shutdown (tested it out). If you're running a business, then you should get a huge one. I know those APC UPS brands that are sold are not what I want from a UPS because the peripherals cost too much, you need special mains cables to connect to the rear of the UPS and also to your equipment and it cost too much. A good brand I am using is Powerware by Eaton. They're excellent and good value for money. Have had these two for more than 2 years without battery replacement. Also, they come with the software that shuts the PC down if the current is interrupted. The only big problem with my Powerware 5100 is that I can't switch users in the windows interface as it tends to crash the PC. It's the software part of the UPS but apart from that, everything works a charm.

Answer 3

united stateshas inner batteries, while the skill is on, it may furnish the direct AC cutting-edge on your gadget, say on your case a workstation. as a results of fact the powe is going down, it does not holiday and switches insantly to the Battery mode, now making AC cutting-edge from the DC skill drawn from the batteries interior. This swap is rather rapid and it does not enable your gadget to shutdown or carry, now while the skill comes back the united statesagain grants AC cutting-edge on your gadget on an identical time as charging the batteries on the comparable time. particular united stateshas indoors recharbale battery, some united stateshave the function of including exterior batteries for longer volume of time. NO united statesdoes not constantly furnish skill from battery, while the AC cutting-edge is on it may furnish the AC cutting-edge particular it has surge safety and voltage regulation in-built, if there's a significant fluctuation it may cope with it or swap to batteries till ultimately the time the fluctuation is over. particular united statesis could be a replace of workstation battery, you may make it however yet then this is going to likely be as reliable as a private workstation

Answer 4

The numbers normally correspond to the length of 'uptime', any UPS will work, the more expensive ones with have direct link to the PC so where theres a power failure, it will shutdown Windows for you to prevent data lost.

Answer 5

If you want to buy UPS product for your requirement, then 1st you decide what your requirement. 300, 500, or 1000 W is only the UPS power capacity of UPS products & no any problem to use it.

Riello UPS