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Re: [ccp4bb] X-ray generator uninterruptible power supply |
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CCP4bb navigationCCP4bb <-- 2007 <-- March 2007 <-- 22 March 2007Subject: Re: X-ray generator uninterruptible power supply From: Robert Sweet sweet {- at -} BNL {- dot -} GOV Date: 2007-03-22 http://ce.eng.usf.edu/pharos/wonders/Modern/itaipu.html Yours, Bob On Thu, 22 Mar 2007, Matthew.Franklin@IMCLONE.COM wrote: > CCP4 bulletin board > PM: > >> Hi Citizens: >> >> Does anyone use an uninterruptible power supply for their X-ray >> generator? Here at UCDIY, the electricity supply is pretty sketchy, >> and it is hammering our X-ray generator every time someone forgets to >> feed the hamster or grease his wheel. If so, how much does such a >> thing cost, and how unpleasant is it to maintain (since at UCDIY, you >> get to do all your own maintenance)? >> >> Thanks in advance. >> >> Bill > > Hi Bill - > > I'm afraid a UPS for that kind of power load may be very expensive. My > 007HF needs a 20 amp, 200 VAC circuit, so let's say the UPS needs to be > able to deliver 4 kW of power (you could probably get away with less). If > you're talking about an older power hog like an RU-H3R, that wants an 85 > amp (!) 200 VAC circuit, so your UPS needs to handle 17 kW load. > > Let's assume that you're trying to ride out little glitches (seconds to > minutes), not long outages. So you don't need huge battery capacity, just > high wattage. > > Here's a couple of sites that might help you - they helped me when I was > looking for a UPS: > > http://www.powerware.com/UPS/selector/SolutionOverview.asp > http://www.apcc.com/template/size/apc/index.cfm? > http://www.advizia.com/tripplite/ > > You'll find that a UPS to run a low-power generator like the 007HF will > cost you $5000 - $10,000, while something that can handle an RU-H3R looks > like it'll cost $20k and up. I'm not even sure that all of these systems > will deliver 3-phase power like the generator needs. > > I never considered getting a UPS for my generator, even though our building > has no backup power and Con Ed also forgets to feed their hamsters > occasionally. What I did get was a UPS for my cryostream - I figured that > the data collection can always be restarted if the generator died in the > middle of the night, but once the crystal is gone, it's gone. I paid less > than $10k for a UPS that can run my Cryojet for over 15 hours, so even if > the power goes out in the middle of the night, I can come in and rescue the > crystal the next day. > > Email me if you want more info on my choice of UPS for my cryo. > > - Matt > > -- > Matthew Franklin , Ph.D. > Senior Scientist, ImClone Systems > 180 Varick Street, 6th floor > New York, NY 10014 > phone:(917)606-4116 fax:(212)645-2054 > > > Confidentiality Note: This e-mail, and any attachment to it, contains > privileged and confidential information intended only for the use of the > individual(s) or entity named on the e-mail. If the reader of this e-mail > is not the intended recipient, or the employee or agent responsible for > delivering it to the intended recipient, you are hereby notified that > reading it is strictly prohibited. If you have received this e-mail in > error, please immediately return it to the sender and delete it from your > system. Thank you. > -- ========================================================================= Robert M. Sweet E-Dress: sweet@bnl.gov Group Leader, PXRR: Macromolecular ^ (that's L Crystallography Research Resource at NSLS not 1) http://px.nsls.bnl.gov/ Biology Dept Brookhaven Nat'l Lab. Phones: Upton, NY 11973 631 344 3401 (Office) U.S.A. 631 344 2741 (Facsimile) ========================================================================= CCP4bb navigationCCP4bb <-- 2007 <-- March 2007 <-- 22 March 2007 |
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