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UPS - Help choosing one - Page 3

post #21 of 23
Thank you for pointing that out, I was pretty tired when I linked that. **edit** I still didn't like my explanation. Let's try again.

There are three types, Offline, Line-interactive and Online. Offline being the cheapest and Online being the most expensive. In Offline and Line-interactive UPSs, the battery is bypassed until there is a drop or spike in voltage or current or if power completely cuts off. A relay is flipped and the battery then supplies power until the supplied AC reaches acceptable levels. The problem with these is that there is a delay between the supplied AC power and the switch to the battery supplying power. The delay should be within tolerances to not affect computer PSUs, but it isn't perfect. Line-interactive are slightly different in that it also has Active Voltage Regulation. This means that some spikes or dips and other interference that would cause an offline UPS to switch to battery power can be eliminated with this extra circuitry providing less breaks in power caused by the relay and less dependence on the battery. Line-interactives are usually a little more expensive than Offline but are a good idea to get. Online UPSs provide power through the battery circuit constantly, so that when the battery needs to take over it is already hooked up and there is not break in power. This is the best setup for reliable power, but it also costs much more and produces quite a bit more heat because of the use of the battery constantly which leads to shorter component life.

So when buying, any UPSs under say ~$400 are going to be either offline or line-interactive. The way to tell if it is an line-interactive is that AVR (active voltage regulation) will be mentioned somewhere in the specs.
Edited by shinji2k - 5/25/08 at 2:34pm
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post #22 of 23
Quote:
Originally Posted by jameskelsey View Post
I like this one, sufficient VA and is an Online type with line conditioning and a good price.

edit: Oh wait, gotta find one in Canada. Here is the F6B version: http://www.canadacomputers.com/index...085&cid=PS.643. Belkin's website is being stupid so I can't find the difference between the F6C and the F6C just yet.

edit2: F6C = Enterprise/Office, F6B = Enterprise/Office with broadband support so connections for coaxial cable.
Edited by shinji2k - 5/25/08 at 2:33pm
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post #23 of 23
Thread Starter 
Thanks a lot for all of the choices guys. It really helps!
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