Hi Roy, The FullRiver DC400-6 AGM battery can issue 2000 amps for 5 seconds so he should be fine.
Larry On Jul 2, 2014, at 12:35 PM, Roy Butler <[email protected]> wrote: I haven't seen anyone mention the battery bank. If I understand correctly, there's a single string of sealed L16 batteries on this inverter. I have my doubts as to whether or not that bank can provide the high current the inverter needs to start this load. Roy Butler NABCEP Certified Solar PV Installer® NYSERDA eligible PV & wind installer IREC Certified Master Trainer™ for Small Wind Installer Four Winds Renewable Energy, LLC 8902 Route 46, Arkport, NY 14807 607-324-9747 www.four-winds-energy.com Join us at the 10th Annual Small Wind Conference A Gathering of Installers, Manufacturers, Dealers, & Distributors June 17 and 18, 2014 in Stevens Point, Wisconsin www.smallwindconference.com Although no trees were killed in the sending of this message, a large number of electrons were terribly inconvenienced. On 7/2/2014 2:10 PM, Jason Szumlanski wrote: > To further qualify my statements, the inverter will start the pump without > issue, but I should echo the warnings by others that if there are other loads > present, especially other motor loads that could start concurrently, you may > experience issues. As long as your customer understands the limitations and > possibilities, you may be just fine. > > > Jason Szumlanski > Fafco Solar > > > > On Wed, Jul 2, 2014 at 11:00 AM, Jason Szumlanski <[email protected]> > wrote: > For what it's worth, I've run a single speed 1.5HP pool pump with a MS4448PAE > in a mobile application on a 38.4kWh battery bank (sixteen Rolls S-530's). I > have also run a 2.5HP Hayward EcoStar Variable Speed pool pump at full RPM, > but that startup current is likely less than you well pump. > > I'm going to guess your 3/4HP well pump will be a breeze to start with this > inverter. > > > Jason Szumlanski > Fafco Solar > > > On Wed, Jul 2, 2014 at 10:47 AM, Allan Sindelar <[email protected]> > wrote: > Drake, > As a normal CYA, I'll always gently let a customer know that this (or any) > particular combination of inverter and load sometimes proves incompatible, > just in case the unexpected happens. (We once had a MS4448 that would not > reliably start and run a condensing boiler; a switch to a different boiler > resolved the issue.) > > Having said that note of caution, I wouldn't give it any concern. 3/4 HP and > 1 HP well pumps have never been an issue; I would expect 1.5 HP to be easy to > run. At 2 HP I'd be asking these questions here. > > You might check that it's a 3-wire, capacitor-start motor, but nowadays > nearly all are. Two-wire pumps (with no control box) can add 50% to the surge. > > The Magnum has a fairly poor voltage regulation response. Sometimes the AC > voltage can drop to ~80 VAC momentarily. So you might also caution your > customer that the lights may flicker when the pump starts. In our home we > know whenever our Kenmore fridge turns on. > > Allan > > Allan Sindelar > [email protected] > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > 505 780-2738 cell > > > > On 7/2/2014 8:17 AM, Drake wrote: >> Hello Wrenches, >> >> We are hoping to use a Magnum PAE 4448 to back up a household that includes >> a 3/4 HP deep well pump. There is about 120 feet of vertical rise and about >> 1000 feet of horizontal distance. >> >> I have been told that there is a correlation between the locked rotor >> current of a pump and the predictable ability of a specified inverter to >> power that pump. >> >> The plumber who installed the pump left no paperwork and retained no records >> of what pump he put in the hole last year. He could only say it was a 3/4 HP >> pump. We are therefore unable to obtain the manufacturer's nameplate >> specifications. >> >> The Magnum PAE 4448 has a 1 mS surge of 70 A (at 240 V) and a 100 MS surge >> of 40 A. According to the NEC Table 430.251(A), a 3/4 HP motor has a locked >> rotor current of 41.4 amps at 230 V. >> >> This inverter can surge at 35.4 A for 5 seconds. The specified battery bank >> will be 8 Full River L-16 AGMs. Can anyone say if: >> Is there enough information to know if this setup will handle the pump, and >> if so, will it? >> How can an inverter's ability to power a motor or pump be calculated by >> knowing its locked rotor current? Which surge periods should be compared to >> the locked rotor current? >> Does the surge current need to equal locked rotor. How long must the >> inverter meet its required maximum surge? >> From experience with Magnums and pumps, does this seem like a good >> combination? >> >> Thank you, >> >> Drake >> >> Drake Chamberlin >> Athens Electric LLC >> OH License 44810 >> CO License 3773 >> NABCEP Certified Solar PV >> 740-448-7328 >> http://athens-electric.com/ > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
_______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
