running constant, the average cost for 1 hp per year was $400, in 2007 (according to Peerless Pump)
-----Original Message----- From: Van pellicom Giedo <[email protected]> To: [email protected] Sent: Wed, Aug 26, 2009 1:52 pm Subject: RE: 3 from 1 ...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 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
