Date: Wed, 11 Aug 2010 10:51:56 -0500 From: Ryan Coleman <ryan.coleman@cwis.biz> To: User Questions <freebsd-questions@freebsd.org> Subject: UPS question Message-ID: <E1B44814-1433-4FBE-902B-BCC1944FBFCD@cwis.biz>
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I know that APC's website states this load on this unit results in this = runtime. However I do not trust these figures, typically, when coming from = smaller manufacturers than APC. I am looking at a 1400VA / 980W UPS to run a single server with a = usually not on monitor, a DSL modem and a simple switch. The server = should generate about 330W in power consumption, the monitor another = 50-100, the modem about 10 and the switch about another 10 watts. So: UPS: 1400VA Server: 400W (liberal estimate) Modem: 10W Switch: 10W Monitor: 75W Total: 495W According to a calculator if I enter all that information: http://www.csgnetwork.com/upssizecalc.html It says that it will use 693VA. Enter that into http://www.csgnetwork.com/batterylifecalc.html It requires Amps... 495W / 120 voltage =3D 4.125 amps... doesn't seem = right but... 192 hours... that's not right, right? -- Ryan=
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