Dan, Have you measured start up current? > On Dec 10, 2016, at 9:39 AM, Drake <drake.chamber...@redwoodalliance.org> > wrote: > > The usual wire I see running to most pumps is #10 UF cable. A 450 foot run > might create too much voltage drop. Maybe a buck boost transformer would > help. > > Drake > > At 12:11 PM 12/10/2016, you wrote: >> Hi Bob; I checked the connections for corrosion, and the wire size looks >> like "the usual" for up here in this area, it's only about 100 feet and the >> usual well depth around here is 350 ft. Running stouter wire might be an >> option to consider...but that's a lot of digging. I'm just hoping VSD might >> be a quick and dirty solution. >> >> Dan Fink >> Adjunct Professor of Solar Energy Technology, Ecotech Institute >> IREC Certified Instructor⢠for: >> ~ PV Installation Professional >> ~ Small Wind Installer >> Executive Director, Buckville Energy >> NABCEP Registered Continuing Education Providers >> 970.672.4342 <ttel:970.672.4342> >> >>  >> >> On Sat, Dec 10, 2016 at 9:53 AM, RE Ellison <reelli...@gmail.com >> <mailto:reelli...@gmail.com>> wrote: >> Don't know about the variable speed but are the wires feeding the pump large >> enough for the distance? >> Sounds like it might be voltage starved because of a high resistance / bad >> connection or a long wire run and the need for a larger wire ? >> >> Just a thought, >> Bob Ellison >> >> On Dec 10, 2016, at 11:39 AM, Dan Fink <danbo...@gmail.com >> <mailto:danbo...@gmail.com>> wrote: >> >>> Esteemed Wrenches; >>> >>> I have a client in a very remote mountain location who is having trouble >>> with his inverter starting his well pump when battery state of charge is >>> below 75%. 24v system, Magnum inverter. >>> >>> It's a 2-wire pump, unknown age, model, horsepower, or well depth. It has >>> always given him trouble, that's why he upgraded to 24v, and the situation >>> is better, but not ideal yet. I don't think adding a hard start capacitor >>> would help as there should be one inside the pump itself, though I suppose >>> it could be blown. >>> >>> Because of the distance and the rough road, it would be super expensive for >>> a well company to come up there, pull the old pump and set a new, modern >>> soft-start one. >>> >>> Has anyone here had any experience with retrofitting variable speed drive >>> units to an unknown pump? If so, what models have you tried and what do you >>> prefer? >>> >>> Thanks; >>> >>> Dan Fink >>> Adjunct Professor of Solar Energy Technology, Ecotech Institute >>> IREC Certified Instructor for: > > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > > This email has been checked for viruses by Avast antivirus software. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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