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Thread ID: 90803 2008-06-16 23:20:00 UPS's Thebananamonkey (7741) Press F1
Post ID Timestamp Content User
679069 2008-06-17 21:30:00 Remember One thing - when a UPS is running normally, its actually running off the mains power, The battery only kicks in when there is a power problem, So if you have a brownout (power Drop) the battery kicks in for a few seconds, or as long as the brown out is occurring.



As he said. Also there is another type of UPS but will cost more a AC > DC > AC version. This way the power is being filtered before your PC and spikes , sages and surges should not be as much of a problem..
paulw (1826)
679070 2008-06-17 21:49:00 Sages have never been an issue for me. :p

So if there's no brownout/power cut, is it possible for my comp to still get the full 620W while connected to the UPS? And it only goes down to 500W when there's actually a problem?

If that's the case, then I don't think I actually have a problem.
Thebananamonkey (7741)
679071 2008-06-18 05:57:00 Remember One thing - when a UPS is running normally, its actually running off the mains power, The battery only kicks in when there is a power problem, So if you have a brownout (power Drop) the battery kicks in for a few seconds, or as long as the brown out is occurring.

In a power cut, apart from the obvious, that the lights have gone out :) the battery is not meant to keep the PC / Equipment going indefinitely, only long enough to save any work, and shut the PC down in a safe manner instead of a sudden crash, a standard PC on a Liebert Powersure Assistant 650 UPS, which is the ones I use lasts around 30-45 minutes easily with the PC doing nothing (if you can put up with the no power alarm beeping) Obviously you cant carry on as if nothing has happened.

While a surge protector will stop a power surge, in a power drop / outage it wont do any thing at all, the PC will suddenly crash due to no power.

Not if you're running an on-line or 'true' UPS: you'll be running off the battery all the time... But most UPS designed for home use are either offline or line-interactive
Agent_24 (57)
679072 2008-06-18 06:15:00 the 620W rating is the OUTPUT power of the 3.3,5 and 12 volts combined, the input power is usually and generally alot less so any reasonable UPS should operate the supply williamF (115)
679073 2008-06-18 08:45:00 Sages have never been an issue for me. :p

So if there's no brownout/power cut, is it possible for my comp to still get the full 620W while connected to the UPS? And it only goes down to 500W when there's actually a problem?

If that's the case, then I don't think I actually have a problem.
with the BASIC ups thats basicly right, but if your monitor is off when there is a power cut you may not be able to get to turn on. also pc may have problems if you do something very intensive.

pc will certainly run at less wattage most of the time, but not all the time.
tweak'e (69)
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