Geeze, Are the PF meters available separately without having to replace a perfectly fine 337?
Matt ---- boB Gudgel <b...@midnitesolar.com> wrote: > Allan Sindelar wrote: > > Matt and boB, > > This is only somewhat relevant, but may help: > > A few days ago, on initial bootup of a new system with a Magnum MS4024AE, we > > easily ran a 1HP submersible at nearly 500' head plus pressurizing (single > > pump system). However, this was a Grundfos SQ, so the soft-start made it > > much easier. Steady draw was about 88ADC at 25 VDC, or around 2200 watts. I > > had cautioned the client that this combination wasn't certain to work, > > although I expected that it would. > > > > Allan Sindelar > > > Hmmmm.... If this is a submersible pump, how would you really know it > was trying to start or not ? > Maybe he just can't hear it trying to start, as short as that try might be ? > > Yeah, I'd check the current and voltage when trying to start off the > inverter and also the generator > just for a reference point. Sounds like a great use of a PF meter > actually. > > boB > > > > > al...@positiveenergysolar.com > > NABCEP Certified Photovoltaic Installer > > EE98J Journeyman Electrician > > Positive Energy, Inc. > > 3201 Calle Marie > > Santa Fe, New Mexico 87507 > > 505 424-1112 > > www.positiveenergysolar.com > > > > -----Original Message----- > > From: re-wrenches-boun...@lists.re-wrenches.org > > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of boB Gudgel > > Sent: Thursday, July 30, 2009 4:45 PM > > To: Matt > > Cc: RE-wrenches > > Subject: Re: [RE-wrenches] Power Factor > > > > Matt wrote: > > > >> Possibly a PF question, or maybe one for Magnum - boB, > >> > >> One of the guys at work is (almost) running a 3/4 hp sub pump with a Magna > >> > > AE 48. Or rather, he isn't. According to him when he first fired it up, it > > operated the pump just fine. The next time he tried, though. he couldn't > > even get a buzz out of the starter. No workee. > > > >> > >> > > Sounds kind of like a "pump is broken or worn out" problem, doesn't it ? > > > > If there is enough ac voltage applied to the pump, the it should do > > ~something~, or lights should dim or some > > kind of sign should show itself, wouldn't you think ? Otherwise, I > > would suspect it might be a surge problem. > > > > Is there a pilot light or something ? Maybe a fuse blew or breaker > > tripped somewhere ? (when the pump went off?) > > > > Doesn't sound like a PF problem though... However, since you mention > > it, with loads that are not a 1.0 power factor, > > at least for displacement power factor, when reactive phase shift is > > involved, the inverter must be able to "sink" current > > from the stored reactive energy as well as be a source to the motor. > > The Magnum does that just fine, as does any other > > decent inverter. > > > > Maybe Tony, Eldon or Gary at Magnum has seen this before ? 425-353-8833 > > > > boB > > > > > > _______________________________________________ > > 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 > _______________________________________________ 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
