Interesting! I was head-scratching as to how to do an identical task. I'd think a contactor on the HV PV output side suitably rated for voltage/current triggered by the aux output once the Classic goes into float would do the trick. I recall the Classic has that feature but never used it yet. Kevin
-----Original Message----- From: RE-wrenches [mailto:[email protected]]On Behalf Of Jeremy Rodriguez Sent: March 24, 2015 5:11 PM To: RE-wrenches Subject: Re: [RE-wrenches] Charging Multiple Battery Banks 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" < [email protected]> 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: [email protected] To: [email protected] 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 < [email protected]> 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: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html <http://www.mail-archive.com/re-wrenches%40lists.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: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/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: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/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: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
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