Well, that is a concern. I think we'll be under 30A after all is said and done and the DR-UPS40 handles 40A. Downside would be the 2A charging rate. I should note this site will have an automatic standby generator so we won't need a huge battery string.
________________________________ From: Af <af-boun...@afmug.com> on behalf of Gino A. Villarini <g...@aeronetpr.com> Sent: Sunday, May 21, 2017 4:47:19 AM To: af@afmug.com Subject: Re: [AFMUG] 24V Battery Revert and Charge Module How do you plan to connect to batteries for this setup ? From: Af <af-boun...@afmug.com<mailto:af-boun...@afmug.com>> on behalf of Jesse Dupont <jesse.dup...@celeritycorp.net<mailto:jesse.dup...@celeritycorp.net>> Reply-To: "af@afmug.com<mailto:af@afmug.com>" <af@afmug.com<mailto:af@afmug.com>> Date: Saturday, May 20, 2017 at 7:07 PM To: "af@afmug.com<mailto:af@afmug.com>" <af@afmug.com<mailto:af@afmug.com>> Subject: Re: [AFMUG] 24V Battery Revert and Charge Module The Meanwell SDR-480P-24 and -48 do current sharing so you can stack up to 8 of those in parallel to have a lot of capacity and N+1 redundancy without the DR-RDN20 redundancy module. We're getting ready to do a four unit N+1 at a site that has 16-17 Amps already and is getting some LTE base stations added to it. ________________________________ From: Af <af-boun...@afmug.com<mailto:af-boun...@afmug.com>> on behalf of George Skorup <george.sko...@cbcast.com<mailto:george.sko...@cbcast.com>> Sent: Saturday, May 20, 2017 4:55:25 PM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] 24V Battery Revert and Charge Module List price on the BCMU360 is about $215 IIRC. I think we pay about $175 from PSUI. Plus $15 for the temp probe. Are you asking run time? I have a couple with 40Ah of battery attached. A few with about 90W load have ran for over four hours, but they never went down, utility came back. A couple others with ~190-220W. Lost utility at one of the sites the other day. It was running for about an hour and a half before I brought a portable gen out. That site didn't go down either. Couldn't let it, too much traffic. And of course utility came back 15 minutes after I got the generator going. Gino A. Villarini President Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 [cid:aeronet-logo_310cfc3e-6691-4f69-bd49-b37b834b9238.png] On 5/20/2017 4:51 PM, Gino A. Villarini wrote: How much are you paying for the Traco and how long does it last? On 5/20/17, 4:44 PM, "Af on behalf of George Skorup" <af-boun...@afmug.com<mailto:af-boun...@afmug.com> ï¿1Ž2 Gino A. Villarini President Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 [cid:part1.95843274.3D23CEA5@cbcast.com] on behalf of george.sko...@cbcast.com<mailto:george.sko...@cbcast.com>> wrote: >Mean Well AD-155B >or >Mean Well SDR-240-24 + DR-UPS40 >or >Mean Well SDR-240-24 (or 48) + Traco BCMU360 (jumper selectable for 24 >or 48) - I use this combo most often. The BCMU360 is only good for ~240W >continuous. > >All this stuff is fine until you start looking to deploy things that are >power hungry like 450m's @ 70W, LTE eNB's that pull 60-100W each, >multiple AF24s or licensed radios, etc. Then you need big-boy >rectifiers, which aren't all that expensive, but they aren't cheap >either. Add good telco-grade batteries on top and it's easily 10x the >cost of what we're used to with the smaller stuff. > >On 5/20/2017 1:16 PM, Matt wrote: >> What is everyone using for switching from AC to battery backup at sites? >> >> I normally have our other guy take care of that part.ï¿1Ž2 But we normally >> have a DIN mount 24V power supply, a DIN mount packetflux site monitor >> that monitors power supply output and battery voltage and some DIN >> mount module that does charging and switching between the two.ï¿1Ž2 Also >> have a 24V to 48V converter to power our 450i etc stuff. >> >> Monitor the site monitor with SNMP and start emailing alarms if power >> supply voltage drops.ï¿1Ž2 Also graph power supply and battery voltage >> with MRTG. >> >> Curious what others are using here? >
