The 120 leg to leg, that is strange. Is it possible the Inverter has an output not split phase? perhaps 2 phase or 4 phase? giving the phase to neutral a normal value and the phase to phase a weird value? I do not think thy would build it this way.
--- On Sat, 8/1/09, Matt Tritt <solar...@charter.net> wrote: > From: Matt Tritt <solar...@charter.net> > Subject: Re: [RE-wrenches] Magnum inverters (not really a power factor issue) > To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> > Date: Saturday, August 1, 2009, 10:43 PM > > > > > > > The next time I'm up there I'll take another tech > with me, plenty of > meters and go through every DC and AC connection (they all > looked good > first time around) to try and get to the bottom of the > problem prior to > taking a harder look at Magnum. I have to say, though, that > I have > heard a couple of comments that tend to suggest that the > inverter might > turn out to be one logical place to look. I like these > inverters a lot, > and I really hope that we find some other issue. > > > > To replay the symptoms, there is no audible or visual (as > in motor > starter noises or dimming light) indication that the pump > is attempting > to do anything other than sit there when inverter voltage > is connected > to it. When the genny power is applied, there is a > discernable working > under a load sound from the engine, and the pump works. I > only had the > homeowner's lousy dime store anaglog meter to work > with, but the > voltage from the inverter was right on 120 volts per leg. > When I > checked phase to phase I also only got 120 - that's > kind of weird, but > it might simply be the meter. All the household loads run > flawlessly > (but this is a pretty fundamental cabin, so the TV and DVD > player are > the most exotic things plugged in. The run to the pump is > adequately > sized - - - - - in other words, it all seems run of the > mill, except > that the pump only ran successfully one time and not on any > further > attempts. Golly.. > > > > Matt > > > > boB Gudgel wrote: > Larry > Crutcher, Starlight Solar wrote: > > > Hey Matt, > > I sure wish their techie's would get to the bottom of > it. I am getting > gun-shy about selling Magnum and they are about the best > available for > small 12 volt systems. I have spend hours trying to solve > the problem. > My customer is still not a happy camper. > > > > > Larry Crutcher > > > Starlight Solar > > > (928) 941-1660 > > > Renewable Energy Products, Service and Installation > > > > > > Can you get someone to look at the voltage and/or current > going into > that pump ?? Scope ? Meter ? > Even a > > > power factor meter would have both voltage and current > measurements. > Some even have a mediocre scope built in. > > > A scope AND a meter is best of course. > > > > > Need stats. AC an DC side. AC voltage at > the pump and at the > inverter. > > > > > Must have more information. Yes, it > ~could~ be a Magnum inverter > issue, but need more information other than "it > doesn't work" > > > > > Does the voltage dip when the pump tries to start ? > What is the > maximum Ac and DC current ? Most basic info for > troubleshooting. > > > > > The inverter manufacturer can probably help somewhat if > they have this > info. > > > > > Just a suggestion here. > > > > > boB > > > > > > > > > > > > > > > > > On Aug 1, 2009, at 4:28 PM, Matt Tritt wrote: > > > > > I took boB's advice and > talked to Magnum > about the problem. Their take on it? "Hmmm, beats > me!" I might be > paraphrasing, but that's the drift. All in all, I'd > say that the > suggestions from the group are at least as good as the > one's from the > manufacturer. > > > > > Matt T > > > > > Larry Crutcher, Starlight Solar wrote: > > > Don't forget, this is a > Magnum inverter > and Magnum has issues. I have two customers with > Magnum problems. One > is a washer that will work perfectly on a cheap > import inverter; the > other has a Vizio TV that works fine on shore power > and generator. > Soooo...maybe there are pumps and other items that > are anti-Magnum. > > > > > > > Larry Crutcher > > > Starlight Solar > > > (928) 941-1660 > > > Renewable Energy Products, Service and Installation > > > > > > > ------------------------------------------------------------------------ > > > > > _______________________________________________ > > > List sponsored by Home Power magazine > > > > > List Address: RE-wrenches@lists.re-wrenches.org > > > > > Options & settings: > > > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > > > > List rules & etiquette: > > > www.re-wrenches.org/etiquette.htm > > > > > Check out participant bios: > > > www.members.re-wrenches.org > > > > > > > > _______________________________________________ > > > List sponsored by Home Power magazine > > > > > List Address: RE-wrenches@lists.re-wrenches.org > > > > > Options & settings: > > > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > > > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > > > > List rules & etiquette: > > > www.re-wrenches.org/etiquette.htm > > > > > Check out participant bios: > > > www.members.re-wrenches.org > > > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.392 / Virus Database: 270.13.39/2275 - Release > Date: 08/01/09 09:38:00 > > > > > > > -----Inline Attachment Follows----- > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
