True, but when you only have single phase available...? A fire pump that runs for ten minutes a week if being tested properly (a good bet that it's not getting proper IT&M if experience is any kind of teacher) and for a somewhat longer period quarterly, and when and if there's a fire is certainly cheaper than installing new power lines from who knows how far away.
On Wed, Aug 26, 2009 at 10:52 AM, Van pellicom Giedo<[email protected]> wrote: > ...power companies have been OK with it... > > Of course thy are ok with it, this small engine EAT ELECTRIC POWER like a > big one... They like to sell more electricity... > A 3 phase engine with the same power output will use (if you use correct > capacitive compensators) about 50 to 75 % of the power that the small engine > will use. > > Giedo > Belgium friend :-) > > > -----Oorspronkelijk bericht----- > Van: [email protected] > [mailto:[email protected]] Namens Todd Williams > Verzonden: 2009-08-26 19:34 > Aan: [email protected] > Onderwerp: RE: 3 from 1 > > The biggest single phase fire pump available has a 15 hp motor. Have > done 3 of them and the power companies have been OK with it. > > > At 12:33 PM 8/26/2009, you wrote: >>Most utility companies have a maximum Hp they allow for single Ph power, >>locally it is max 10 Hp. Not much advantage to a phase converter if your >>only allowed 10Hp of single phase to supply it. I don't think a converter >>can give you "soft start" capability. >> >>Thom McMahon, SET >>Firetech, Inc. >>2560 Copper Ridge Dr >>P.O. Box 882136 >>Steamboat Springs, CO 80488 >>Tel: 970-879-7952 >>Fax: 970-879-7926 >> >> >> >>-----Original Message----- >>From: [email protected] >>[mailto:[email protected]] On Behalf Of >>[email protected] >>Sent: Wednesday, August 26, 2009 10:30 AM >>To: [email protected] >>Subject: Re: 3 from 1 >> >> >>Also, the 2010 edition of NFPA 20 will explicitly state that you cannot >>convert from single to three phase. (according to an NFSA bulletin the >>committee has already agreed on this). >> >> >> >>Forest Wilson >> >>Cherokee Fire >> >> >>-----Original Message----- >>From: Ron Greenman <[email protected]> >>To: [email protected] >>Sent: Wed, Aug 26, 2009 12:26 pm >>Subject: Re: 3 from 1 >> >> >> >> >>Todd, >> >>20-A.9.2.2 in the 2007 edition. Not prohibited but not recommended. >> >>On Wed, Aug 26, 2009 at 9:12 AM, Todd Williams<[email protected]> wrote: >> > You may need to have an electrical engineer review the installation. >> > I did a single phase pump a few years ago and ran into electrical >> > problems (for which I was blamed). Hired an EE and he went through and >> > found the electrician messed up the installation from the service >> > right through to the pump as well as the generator feed and >> > connection. Didn't have a converter, but did have two transformers >> > because the electrician told us the wrong voltage (208 v. 240 - for >> > which I was also blamed). >> > >> > BTW, what section of the Code says Phase Converters are not allowed? >> > I couldn't find that at the time, but had rejected the idea anyway. >> > >> > >> > >> > >> > At 11:58 AM 8/26/2009, you wrote: >> >>I need some education of Phase Converters. >> >> >> >> >> >> >> >>A 300 gpm Fire Pump (Tank fed), is supplied by one of these things. >> >>Single phase only is available, so one of these has been installed to > make >>it work. >> >>Installed in '06-07ish, just replaced main board in controller. I was >> >>there to do test following part replace. 240vac, dropped to 106-108 >> >>across the 3 as indicated on panel. Middle leg showed 422vac in event > log, >>as high peak. >> >>When started, pump shaft (vertical) jumped up and down repeatedly. We >> >>red tagged it and are waiting on word from electricians. Pump Motor >> >>checked out fine. I know they are not allowed, but it was approved, so., > I >>just test it. >> >> >> >> >> >> >> >>R/ >> >> >> >>Matt >> >> >> >> >> >> >> >>Matthew J. Willis, CET >> >> >> >>Automatic Fire Sprinklers >> >> >> >>Norred Fire Systems L.L.C. >> >> >> >>318-387-1134 Voice >> >> >> >>318-387-1163 Facsimile >> >> >> >>[email protected] >> >> >> >> >> >> >> >>_______________________________________________ >> >>Sprinklerforum mailing list >> >>[email protected] >> >>http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> > >> > Todd G. Williams, PE >> > Fire Protection Design/Consulting >> > Stonington, Connecticut >> > www.fpdc.com >> > 860.535.2080 >> > ______________________ >>_________________________ >> > Sprinklerforum mailing list >> > [email protected] >> > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> > >> >> >> >>-- >>Ron Greenman >>Instructor >>Fire Protection Engineering >>Bates Technical College >>Tacoma, WA >> >>Member: >>SFPE, ASCET, NFPA, AFSA, NFSA AFAA >>_______________________________________________ >>Sprinklerforum mailing list >>[email protected] >>http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> >>_______________________________________________ >>Sprinklerforum mailing list >>[email protected] >>http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> >>_______________________________________________ >>Sprinklerforum mailing list >>[email protected] >>http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > Todd G. Williams, PE > Fire Protection Design/Consulting > Stonington, Connecticut > www.fpdc.com > 860.535.2080 > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- Ron Greenman Instructor Fire Protection Engineering Bates Technical College Tacoma, WA Member: SFPE, ASCET, NFPA, AFSA, NFSA AFAA _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
