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
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