HI Drake BE CAREFULL I had a battery set explode on me due to a loose connection, it had been charging, and I was investagating and the loose connection sparked and BANG I was fortunatle to have my goggles on. Besure to stop charging then vent, then investiagate.
Also I do not think the water loss is from the controller, question how often they run theri generator. Darryl --- On Sat, 8/14/10, boB Gudgel <b...@midnitesolar.com> wrote: > From: boB Gudgel <b...@midnitesolar.com> > Subject: Re: [RE-wrenches] Voltage discrepancy > To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> > Date: Saturday, August 14, 2010, 5:10 PM > Drake Chamberlin wrote: > > boB, > > > > Thanks, I will check all connections when I get > out there. Is there anyway a loose connection could > cook the batteries? > > A loose connection, if it was like I described, would tend > to under-charge the batteries. I would > think that > if there were ~that~ much of a voltage drop, and > significant current, you'd have a pretty hot connection > somewhere. Although, if the connection is bad enough, > you might just get the CC to get to Absorb or > Float voltage and that would at least limit the current but > maybe not enough.. > Of course, loose connections may not be the problem, but > that's what I look for first. > I would measure the voltage at the CC terminal block and > see if it is telling the truth. > > If the CC is telling the truth, then she may have a bad > connection, and then > it's Warning Will Robinson !! > > Could be intermittent too. Then ya may > want to start wiggling and banging on things. > It sure worked well with TV sets. > > boB > > > > > > Thanks, > > > > > > Drake > > > > > > At 03:16 PM 8/14/2010, you wrote: > >> Drake Chamberlin wrote: > >>> I called her back just now, and the voltage > readings on the Mate, MX and Trimetric all match. > Humm. > >>> The batteries are 4, 4 1/2 year old, U.S. > Battery L-16s wired in 24 volt configuration. It seems > that I remember postings of Wrenches having problems with > these batteries. There is about 1 KW STC of PV on the > roof. > >> > >> Might want to be careful of loose > connections. Maybe the MX was putting out some > high(ish) current and there > >> was a voltage drop across that connection, and now > they are reading the same because the current is > >> lower from the MX. i.e. high voltage > at the terminals of the CC and lower at the actual battery > terminals. > >> > >> boB > >> > >> > >> > >> > >> > >>> > >>> At 12:12 PM 8/14/2010, you wrote: > >>>> Any way she can get a real > voltmeter? the MX60 has voltage calibration, so does > the FX it sounds like something is over charging, > perhaps the generator run? additonal > details on battery bank size, array size and typical > load. Darryl > >>>> > >>>> --- On *Sat, 8/14/10, Drake Chamberlin > /<drake.chamber...@redwoodalliance.org>/* > wrote: > >>>> > >>>> > >>>> From: Drake > Chamberlin <drake.chamber...@redwoodalliance.org> > >>>> Subject: > [RE-wrenches] Voltage discrepancy > >>>> To: "RE-wrenches" > <re-wrenches@lists.re-wrenches.org> > >>>> Date: Saturday, > August 14, 2010, 8:58 AM > >>>> > >>>> Hello Wrenches, > >>>> > >>>> I just got off the > phone with an off grid system owner who has a > >>>> voltage > discrepancy showing between the reading on her MX-60 and > >>>> both her Mate and > Trimetric meter. The MX-60 shows 28.8 V and > >>>> the Trimetric and > the Mate both show around 25 volts. The > >>>> batteries are > using a tremendous amount of water. > >>>> > >>>> Has anyone seen > this scenario before? Do you think the MX-60 is > >>>> bad? > >>>> > >>>> Thanks, > >>>> > >>>> Drake Chamberlin > >>>> Athens Electric > >>>> OH License 44810 > >>>> CO License 3773 > >>>> NABCEP TM > Certified PV Installer > >>>> Office - > 740-448-7328 > >>>> Mobile - > 740-856-9648 > >>>> > >>>> -----Inline > Attachment Follows----- > >>>> > >>>> > _______________________________________________ > >>>> List sponsored by > Home Power magazine > >>>> > >>>> List Address: RE-wrenches@lists.re-wrenches.org > >>>> < > >>>>http://us.mc519.mail.yahoo.com/mc/compose?to=re-wrenc...@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 > <http://www.re-wrenches.org/etiquette.htm> > >>>> < http://www.re-wrenches.org/etiquette.htm> > >>>> > >>>> Check out > participant bios: > >>>> > www.members.re-wrenches.org <http://www.members.re-wrenches.org/> < > http://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 > >>>> <http://www.re-wrenches.org/etiquette.htm> < > >>>> http://www.re-wrenches.org/etiquette.htm> > >>>> > >>>> Check out participant bios: > >>>> www.members.re-wrenches.org <http://www.members.re-wrenches.org/> < > >>>> http://www.members.re-wrenches.org/> > >>> > >>> Drake Chamberlin > >>> Athens Electric > >>> OH License 44810 > >>> CO License 3773 > >>> NABCEP TM Certified PV Installer > >>> Office - 740-448-7328 > >>> Mobile - 740-856-9648 > >>> > >>> > ------------------------------------------------------------------------ > >>> > >>> > _______________________________________________ > >>> 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 > >>> <http://www.re-wrenches.org/etiquette.htm> > >>> > >>> Check out participant bios: > >>> www.members.re-wrenches.org <http://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 > >> <http://www.re-wrenches.org/etiquette.htm> > >> > >> Check out participant bios: > >> www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > > > > Drake Chamberlin > > Athens Electric > > OH License 44810 > > CO License 3773 > > NABCEP TM Certified PV Installer > > Office - 740-448-7328 > > Mobile - 740-856-9648 > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > 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
