Yea...i lean towards putting mow batteries in with the money you would have spent on a genset.
On Sun, May 21, 2017, 9:50 AM Chuck McCown <ch...@wbmfg.com> wrote: > You can always 100% rely on a standby generator not starting when you need > it the most. > > *From:* Jesse Dupont > *Sent:* Sunday, May 21, 2017 7:02 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] 24V Battery Revert and Charge Module > 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> on behalf of Jesse Dupont < > jesse.dup...@celeritycorp.net> > Reply-To: "af@afmug.com" <af@afmug.com> > Date: Saturday, May 20, 2017 at 7:07 PM > To: "af@afmug.com" <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> on behalf of George Skorup < > george.sko...@cbcast.com> > *Sent:* Saturday, May 20, 2017 4:55:25 PM > *To:* 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 > > 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 > > ï¿1Ž2 > > *Gino A. Villarini* > President > Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 > > on behalf of 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? > > > > >
