Try looking at the New Midnite Kid, allows for two parallel charge controllers off the same input. I too have systems that I use 2 CCs for alarm systems pull the 2nd CC "PV source input" from the 48 VBB and charge the 24 VBB. disable MPPT I will also agree RU outta of yer mind? Yep the SW 4024s were.... that is were!, work horses but not to many around. can you say a ticking Tbomb if this is powering a load in some remote place w/ hi customer expectations On Mar 25, 2015, at 1:24 PM, Ray Walters wrote:
> Hi Jeremy; > > I usually would combine both buildings all into one system, KISS principle, > and also less cost. Later when those batteries die, replace with a properly > sized bank. I also wouldn't be building a new system around an SW4024, those > are getting really dated. Great inverter, but they don't last forever. They > have excellent resell value on Ebay for folks that need replacements in dual > and quad systems. > Having said that, Jerry's idea of 2 controllers on one array sounds like it > would work, but not with Blue Sky because of the grounding as Larry mentioned. > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-8760 > On 3/25/2015 10:36 AM, Larry wrote: >> Keep in mind that the Midnite controller has a combined PV and bat. negative >> and the Blue Sky requires isolated PV and bat. negative. >> Larry Crutcher >> Starlight Solar Power Systems >> On 3/24/15 6:11 PM, Jeremy Rodriguez wrote: >>> The thought was to charge the batteries for a new building utilizing an >>> SW4024 with new classic controller and new L A batteries, and once those >>> batteries are charged send the PV to the house system which is the 48v >>> setup with dual outback inverters and dual SB3048 CCs. Lead acid batteries >>> as well. 3 years old >>> I've never had this come up in 16 years! >>> >>> >>> Jeremy Rodriguez >>> All Solar, Inc. >>> 1463 M >>> Penrose Colorado 81240 >>> >>> Sent by Jeremy's iPhone. Sorry for typos and shorthand! >>> >>> On Mar 24, 2015, at 5:31 PM, "Ray Walters" <r...@solarray.com> wrote: >>> >>>> What's the reasoning behind two different battery banks at different >>>> voltages? What is the other equipment involved: batteries type, age, >>>> inverters, etc.? >>>> R.Ray Walters >>>> CTO, Solarray, Inc >>>> Nabcep Certified PV Installer, >>>> Licensed Master Electrician >>>> Solar Design Engineer >>>> 303 505-8760 >>>> On 3/24/2015 5:07 PM, Jeremy Rodriguez wrote: >>>>> It would be 2kw of PV >>>>> >>>>> Jeremy >>>>> All Solar >>>>> Penrose, CO >>>>> >>>>> Date: Tue, 24 Mar 2015 12:17:20 -1000 >>>>> From: jerrysgarag...@gmail.com >>>>> To: re-wrenches@lists.re-wrenches.org >>>>> Subject: Re: [RE-wrenches] Charging Multiple Battery Banks >>>>> >>>>> How big of a system are you looking at as some of the smaller charge >>>>> controllers are auto sensing >>>>> Jerry >>>>> >>>>> On Tue, Mar 24, 2015 at 12:11 PM, Jeremy Rodriguez >>>>> <allsolarjer...@msn.com> wrote: >>>>> Wrenches, >>>>> I have a client that wants to charge a 24v battery bank and a 48v bank >>>>> with the same array. Different charge controllers, with some type of >>>>> relay is what I was thinking, and using the controller's aux. 12v output >>>>> for the relay control. >>>>> The primary battery to be charged would be the 24v bank, then once it is >>>>> fully charged, divert the pv to the secondary controller at the 48v bank. >>>>> >>>>> Any comments or recommendations on this would be helpful. >>>>> >>>>> Jeremy Rodriguez >>>>> All Solar Inc. >>>>> Penrose, CO >>>>> >>>>> _______________________________________________ >>>>> List sponsored by Redwood Alliance >>>>> >>>>> List Address: RE-wrenches@lists.re-wrenches.org >>>>> >>>>> Change listserver email address & settings: >>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>>> >>>>> List-Archive: >>>>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>>>> >>>>> List rules & etiquette: >>>>> www.re-wrenches.org/etiquette.htm >>>>> >>>>> Check out or update participant bios: >>>>> www.members.re-wrenches.org >>>>> >>>>> >>>>> >>>>> >>>>> _______________________________________________ List sponsored by Redwood >>>>> Alliance List Address: RE-wrenches@lists.re-wrenches.org Change >>>>> listserver email address & settings: >>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>>> List-Archive: >>>>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>>>> List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or >>>>> update participant bios: www.members.re-wrenches.org >>>>> >>>>> >>>>> _______________________________________________ >>>>> List sponsored by Redwood Alliance >>>>> >>>>> List Address: RE-wrenches@lists.re-wrenches.org >>>>> >>>>> Change listserver email address & settings: >>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>>> >>>>> List-Archive: >>>>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>>>> >>>>> List rules & etiquette: >>>>> www.re-wrenches.org/etiquette.htm >>>>> >>>>> Check out or update participant bios: >>>>> www.members.re-wrenches.org >>>>> >>>> >>>> _______________________________________________ >>>> List sponsored by Redwood Alliance >>>> >>>> List Address: RE-wrenches@lists.re-wrenches.org >>>> >>>> Change listserver email address & settings: >>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>> >>>> List-Archive: >>>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>>> >>>> List rules & etiquette: >>>> www.re-wrenches.org/etiquette.htm >>>> >>>> Check out or update participant bios: >>>> www.members.re-wrenches.org >>>> >>> >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> List-Archive: >>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> www.members.re-wrenches.org >>> >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > t...@swnl.net www.SWNL.net > Solarwinds Northernlights > Serving Mid Coast Maine & Northern California > 207-832-7574 Cl. 610-517-8401 > > Blair "TUMP" May > ******** MAINE'S CHARTER ******** > NABCEP "Certified PV Installer" > > ******** MAINE'S CHARTER ******** > Trace Xantrex "Certified" Dealer / Installer" >
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