You could replace the metrolinq with siklu and not worry about voltage ~36-72 -/+
> On Jul 12, 2019, at 3:36 PM, Sterling Jacobson <[email protected]> wrote: > > I typically make that decision on a case by case basis. > > I’m designing these cabinets to have a transfer plug so I can show up and > plug in a generator and leave it running. > > If I have batteries rated 12v 52ah, the capacity stat says amp hours; 20hr. > Not sure what that means, but guessing I really only get half the rated hours > to be safe, so maybe 100ah for 48v string of these. > At up to 5A or more draw, that’s maybe 20 hours of run time. > Usually enough time to get notification and show up with a generator without > having to get up in the middle of the night to do it. > > Do those numbers sound normal? > > From: AF <[email protected]> On Behalf Of [email protected] > Sent: Friday, July 12, 2019 2:30 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] Fw: Fwd: Fwd: Still need help 50v DC regulator 6-10A > > The question really is, do you want the circuit to go down during a power > failure. Save the battery or save the circuit. I prefer to let them go > stone dead in the hopes that the power will be restored before the link goes > down. The lower you draw a rechargeable battery, the more you shorten its > life. You can go as low as you want. > > > From: Sterling Jacobson > Sent: Friday, July 12, 2019 2:24 PM > To: AnimalFarm Microwave Users Group > Subject: Re: [AFMUG] Fw: Fwd: Fwd: Still need help 50v DC regulator 6-10A > > Hmm, yes I guess that would work well. > > Only drawback is during battery operation at 48v it would drop to 45v > immediately which is still within the 10 percent over/under at 43.2 and > should stay in operation. > > On a 48v battery system, what is the lower range of voltage for half draw of > 200ah 48v series? It’s not that low, is it? > > From: AF <[email protected]> On Behalf Of [email protected] > Sent: Friday, July 12, 2019 2:13 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] Fw: Fwd: Fwd: Still need help 50v DC regulator 6-10A > > If you are only using a half amp, 2-3 1N4004 diodes in series will give you > the drop you need. > > From: Sterling Jacobson > Sent: Friday, July 12, 2019 2:10 PM > To: AnimalFarm Microwave Users Group > Subject: Re: [AFMUG] Fw: Fwd: Fwd: Still need help 50v DC regulator 6-10A > > Yeah, not sure, but on a FB WISP page I posted about a similar topic someone > chimed in that they had indeed killed a MetroLinq at over 52v during charge > on direct battery connection. > > From: AF <[email protected]> On Behalf Of [email protected] > Sent: Friday, July 12, 2019 2:09 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] Fw: Fwd: Fwd: Still need help 50v DC regulator 6-10A > > That +/- 10% seems contrived. Like to know what kind of regulator they are > using. > > From: Sterling Jacobson > Sent: Friday, July 12, 2019 2:04 PM > To: AnimalFarm Microwave Users Group > Subject: Re: [AFMUG] Fw: Fwd: Fwd: Still need help 50v DC regulator 6-10A > > Ah yes, I guess they are not aware of typical float charge on 48v direct > battery system and did not include the simple circuitry to limit overvoltage > in their DC terminal feeds. > > From: AF <[email protected]> On Behalf Of [email protected] > Sent: Friday, July 12, 2019 1:54 PM > To: [email protected] > Subject: [AFMUG] Fw: Fwd: Fwd: Still need help 50v DC regulator 6-10A > > > > From: MetroLinq Support > Sent: Friday, July 12, 2019 1:50 PM > To: [email protected] > Subject: Fwd: Fwd: [AFMUG] Still need help 50v DC regulator 6-10A > > Hi, > > The maximum recommended voltages for ML2.5 is 48VDC +/- 10%, that represents > a maximum of 52.8 VDC. I had a case in the past in which the client exceded > the 52VDC and the radios got damage, so I will not suggest to use 54VDC. > > > > > > Best Regards, > > > Nino Castrejon > Sales Engineer > > > > > > From: Sterling Jacobson > Sent: Thursday, July 11, 2019 2:59 PM > To: AnimalFarm Microwave Users Group > Subject: [AFMUG] Still need help 50v DC regulator 6-10A > > > Sorry to beat a dead horse, but I’m still stuck on this mini-pop DC plant > thing. > > > Is there a DIN mountable voltage regulator that will allow me to feed load > from 48v battery string without going over 50v at 6-10A? > > > I’m still trying to power a couple of MetroLinq 2.5 antennas at the site, but > people tell me they explode if given more than say 52v. > > > Which means my float battery system will kill the radios if it goes into > recharge mode at 54v? > > > Or am I overthinking things? > > > Looks like to solve this I would need something like Mean Well $100 > SD-350B-48 between the battery array and the load to assure it sticks around > 50v. > > > Is that my only solution here? > > > > > > -- > 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 > -- > 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 > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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