I think i had hysterisis once. Longd story, 3am, fat girl, bar. Health dept cleared it all up with some pennecillin
On Thu, Jan 21, 2021, 2:13 PM Chuck McCown via AF <[email protected]> wrote: > It depends on whether you value keeping the equipment running over the > lifetime of the battery. I would typically set them for 40 volts in a 48 > volt system. Lots of things will keep running down that low. But that is > lower than you want for maximum battery lift. > > But, this almost never fires in an area with reliable AC power for > charging. If your AC is so unreliable that the LVD is used a couple of > times a month, you need a back up generator. > > I used to believe in LVDs but I don’t any more. Why pick an arbitrary > point where you system will shut down? I would rather just let it run as > long as possible while scrambling to dispatch a portable generator to the > area. > > And then there is the problem of the LVD reset when the rectifiers kick > back on. Sometimes it is difficult to wire them up so that will happen. > The power comes back on, the batts start to charge, then the LVD reconnects > the load. If the batts are too small the voltage will drop the the LVD > will disconnect again. You can have it oscillate if you don’t have enough > hysteresis in the LVD. > > But hysteresis delays your load coming back on. That is a very > undesirable thing. > > Like I said, not a fan... > > *From:* Gino A. Villarini > *Sent:* Thursday, January 21, 2021 11:56 AM > *To:* AnimalFarm Microwave Users Group > *Subject:* [AFMUG] Battery LVD calculation? > > > Team, > > > > How do I properly calculate the lowest LVD voltage for a batt bank? > > *Gino* > *Villarini *Founder/President > @gvillarini > t: 787.273.4143 Ext. 204 > [image: aeronet-logo] <http://www.aeronetpr.com/> [image: inc500] > <https://www.inc.com/profile/aeronet> [image: fb-logo] > <https://www.facebook.com/aeronetpr/> [image: insta-logo] > <https://www.instagram.com/aeronetpr/?hl=en> [image: in-logo] > <https://www.linkedin.com/company/aeronet-broadband-corp> [image: > tw-logo] > <https://twitter.com/AeroNetPR?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor> > [image: yt-logo] > <https://www.youtube.com/channel/UCr2Q9WBrAYVm3Fn970Jd6VA> > www.aeronetpr.com | Metro Office Park #18 Suite 304 Guaynabo, PR 00968 > > ------------------------------ > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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