Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!spool.mu.edu!usenet.eel.ufl.edu!bofh.dot!arclight.uoregon.edu!news.uoregon.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!newsfeed.internetmci.com!in2.uu.net!news.shadow.net!usenet From: shagpage@shadow.net (Buddy Donnelly) Newsgroups: comp.infosystems.www.servers.misc,comp.os.linux.misc,comp.os.os2.networking.misc,comp.unix.bsd.freebsd.misc,comp.unix.misc Subject: Re: need comments on Uninteruptable Power Supply Date: 26 May 1996 06:07:39 GMT Organization: Shadow Information Services, Inc. Lines: 59 Message-ID: <4o8sfb$slr@viper.shadow.net> References: <Pine.HPP.3.91.960519000056.20746A-100000@bluejay.creighton.edu> <Drn7JM.IxD@ritz.mordor.com><Pine.HPP.3.91.960519000056.20746A-100000@bluejay.creighton.edu> <Drn7JM.IxD@ritz.mordor.com> <Pine.HPP.3.93.960522022708.8039C-100000@bluejay.creighton.edu> <4o3me3$op7@nadine.teleport.com><Pine.HPP.3.91.960519000056.20746A-100000@bluejay.creighton.edu> <Drn7JM.IxD@ritz.mordor.com><Pine.HPP.3.91.960519000056.20746A-100000@bluejay.creighton.edu> <Drn7JM.IxD@ritz.mordor.com> <Pine.HPP.3.93.960522022708.8 039C-100000@bluejay.creighton.edu> <4o3me3$op7@nadine.teleport.com> <31A61E66.2781E494@uvi.edu> NNTP-Posting-Host: ppp-tam-20.shadow.net X-Newsreader: NeoLogic News for OS/2 [version: 4.5c 999] Xref: euryale.cc.adfa.oz.au comp.infosystems.www.servers.misc:4027 comp.os.linux.misc:105992 comp.os.os2.networking.misc:14439 comp.unix.bsd.freebsd.misc:20087 comp.unix.misc:23048 In message <31A61E66.2781E494@uvi.edu> - John Lucas <jlucas@uvi.edu>Fri, 24 May 1996 20:39:02 GMT writes: :> :>Rob Saker wrote: :>> :>> In message <Pine.HPP.3.93.960522022708.8039C-100000@bluejay.creighton.edu> - :>> Psycho Bob <honge@creighton.edu> writes: :>> :>> :>Of course, it's the price that's attractive. I'm thinking of buying :>> :>several. One of the personal replies I got said the unit is indeed good, :>> :>but he's not too well conversed in UPS to know what kind sine wave it :>> :>produces -- he just quoted me the items in manual. I have looked for UPS :>> :>from both APC and Tripp Lite, but couldn't recall about sine distortion in :>> :>> Here's a bit more $0.02 worth to cloud the issue. I've had a handfull of APC's :>> (SmartUPS 600, 1200, 2000) for over 3 years now and they're still running :>> fine..... :>> :>> On the other hand, I understand that these (and the TrippLite's) have clamp on :>> protection versus the UPS's from Best, which have the AC running through the :>> power converter at all times for an absolutle clean signal. :>> :> :>I missed the start of this thread, but I would like to endorse the Best "Ferrups" :>UPSes. Here in the islands, the power is truly atrocious and a real test of UPS :>reliability. After hurricane Hugo (1989) we had a Best 5KVA unit that sat out in :>the *rain* for two years (building partially blown away) and except for a battery :>replacement (unit was trapped by debris surrounding the building it lived in). :>Another time this same unit had it's main logic board zapped by our crack physical :>plant personel *arc welding* on the input circuit (really), but the equipment it :>was protecting suffered no hurt. After hurricane Marilyn (1995), the entire :>University operated off a diesel generator for 2 months (try that sometime). The :>ferroresonant technology employed by Best acts as a line conditioner/voltage :>regulator even if the battery is dead. Frequency shifts (ferroresonant's Achilles :>heel) are normally handled by going over to inverter, no worries about voltage :>spikes/sags there. :> :>Before moving to St. Thomas I worked at Oregon State University for 8 years and in :>that time we had one power outage. In St. Thomas we have experienced outages as :>frequent as 30/month (it is better these days). There have been spikes that would :>curl your hair, and brownouts are also common. In these conditions, you separate :>the lambs from the goats when it comes to UPSes. I bet on Best units for anything :>larger than 400VA. At GSA prices they cost about $1/VA; cheap when you consider :>what the power company and/or mother nature can do to your equipment. :> :>Clean power is for wimps :-} :> :>-- :>| John Lucas jlucas@uvi.edu | :>| Information Technology NIC Handle: JL423 | :>| University of the Virgin Islands (809) 693-1216 | :>| St. Thomas, VI 00802 http://www.uvi.edu/jlucas.html | John, with a little more work you could turn that outline into a publishable novel. I for one would like to read the next few chapters you get done. Buddy