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Article #5239Re: UPS (Uninterruptable Power Supplies)... kinda long.
From: Matt Crawford
Date: Tue, 24 Jul 1990 21:11
Date: Tue, 24 Jul 1990 21:11
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1594 bytes
I'd like to leap in here with a related question. What ratings make for a good surge suppressor? I have a Sparcstation at home and I live in a lightning-rich part of the country. My whole system draws less than 15 amps. I see claims like "clamps surges at 325 volts within 5 ns" "provides 10-40 dB EMI/RFI noise attentuation" "provides 300 joules differential plus 225 joules common mode protection" "tough enough to absorb 2 million watts of power in one nanosecond" Given that I understand all the terms, and my physics hasn't rusted so badly that I can't see that the last statement is bupkus, what are the minimum acceptable figures to assure a great reduction in the chance of damage? ________________________________________________________ Matt Crawford matt@oddjob.uchicago.edu
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!swrinde!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!cica!iuvax!ux1.cso.uiuc.edu!midway!oddjob!mattReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!swrinde!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!cica!iuvax!ux1.cso.uiuc.edu!midway!oddjob!matt From: matt@oddjob.uchicago.edu (Matt Crawford) Newsgroups: sci.electronics,sci.physics Subject: Re: UPS (Uninterruptable Power Supplies)... kinda long. Message-ID: <1990Jul24.211157.24653@midway.uchicago.edu> Date: 24 Jul 90 21:11:57 GMT References: <1990Jul21.195257.9277@cunixf.cc.columbia.edu> <1990Jul22.171116.2062@bellcore-2.bellcore.com> Sender: news@midway.uchicago.edu (News Administrator) Reply-To: matt@oddjob.uchicago.edu (Matt Crawford) Followup-To: sci.electronics Organization: Morse Science High School Lines: 24 In-Reply-To: karn@thumper..bellcore.com (Phil R. Karn)