I remember beta testing with Schneider in 2006 and the effect was there but quickly went away with networked charge sources. --Dave
> Wrenches... > > At my former employer this same thing actually occurred with their > controllers about 7-9 years ago... caused a bit of a stink back then until > we did some research on the phenomenon. Jay was correct in that the > right > circumstances need to line up for the customer and most metering even see > this with the way products are sampling. > > This is also combined with an effect called "Coup De Fouet" or whip > effect. There are a lot of articles about the loading of a battery how the > battery voltage acts like the end of a whip, when you look at the DC > voltage over time on a scope. This can occur in the reverse at the end > of > the charge with the right circumstances. > > When batteries are charging and they are near their peak and you attempt > to > remove the charge, especially if there is no or very little load on the > batteries and you try to stop charging, the chemical reaction within the > battery is still occurring even without the source coming from the > controller. It takes some time 3-4 mins with no load for the chemical > reaction to slow down, during this time you can see a voltage surge, with > some of the testing we did we saw as high as 8-10 volts jump for 30-180 > seconds... If the controller or monitoring device "samples" the voltage > at > this time you are going to get bad voltage reading. > > > > > > > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > <http://www.rollsbattery.com> <http://www.rollsbattery.com> > Steve Higgins > Technical Services Manager > m +1.206.790.5840 > f +1.902.597.8447 *e* st...@surrette.com > <#UNIQUE_ID_SafeHtmlFilter_> <http://www.facebook.com/RollsBattery> > <http://www.facebook.com/RollsBattery> > <http://www.twitter.com/RollsBattery> > <https://www.youtube.com/user/RollsBattery> > <https://www.linkedin.com/company/rolls-battery-engineering> > <http://www.instagram.com/RollsBattery> > <http://www.instagram.com/RollsBattery> > <http://www.instagram.com/RollsBattery> > ------------------------------ > CONFIDENTIALITY: The information transmitted herein is intended only for > the addressee and may contain confidential, proprietary and/or privileged > material. Any unauthorized review, distribution or other use of or the > taking of any action in reliance upon this information is prohibited. If > you receive this email in error, please contact the sender and delete or > destroy this message and all copies. > ------------------------------ > > On Tue, Jul 18, 2017 at 5:25 PM, Jerry Shafer <jerrysgarag...@gmail.com> > wrote: > >> Wrenches >> The Outback system with grid connection would be programmed for grid >> connection all the way from the inverter to the Outback FM CC, using a >> midnite CC this option may not be possible resulting to a CC push if the >> grid disconnects resulting in a spike. the disconnect might be from >> settings to tight or as it was said utility spikes. You might thing that >> the battery bank should take it up but internal resistance in the >> battery >> or to it may prevent it. The other thing I would look at is connections, >> if >> there is any resistance in a connection this could happen. >> >> On Mon, Jul 17, 2017 at 2:36 AM, Drake <drake.chamberlin@ >> redwoodalliance.org> wrote: >> >>> Hello Wrenches, >>> >>> My client reported seeing an overvoltage error message on her Mate 3 on >>> a >>> Radian system. The Radian is selling to the grid and is being fed by a >>> Midnite Classic 200. It has shown two spikes so far, the last one going >>> to >>> 67 volts and lasting 1 second. The batteries are Concorde AGM, 305 AH. >>> >>> Does this momentary spike seem like a problem or a warning of problems >>> to >>> come? >>> >>> Thanks, >>> >>> Drake >>> >>> _______________________________________________ >>> 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 >>> -wrenc...@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 >>> >>> >> >> _______________________________________________ >> 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 >> >> >> > _______________________________________________ > 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 > > Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 _______________________________________________ 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