Had that arrangement used a buss bar instead of paralleling the bank together through the batteries that part of it wouldn't have been a problem. I'm still puzzled by the off-grid community's resistance to designing battery banks the way large telco banks are designed, using buss bars as parallel connections and the inverter connection point and leaving the series strings physically isolated from one another.
From: wind...@wind-sun.com Sent: Tuesday, December 01, 2009 8:28 AM To: RE-wrenches Subject: Re: [RE-wrenches] concord batteries, EQUALIZE Them! You gotta wonder about why the customer bought such a battery layout, or why the installer sold that kind of configuration (which ever it was) with so many small batteries. We would never recommend going over 2 parallel banks, but sometimes the "customer knows best...". .................................................................................................. Northern Arizona Wind & Sun - Electricity From The Sun Since 1979 Solar Discussion Forum: http://www.wind-sun.com/ForumVB/ .................................................................................................. ----- Original Message ----- From: Travis Creswell To: 'RE-wrenches' Sent: Tuesday, December 01, 2009 11:18 AM Subject: Re: [RE-wrenches] concord batteries, EQUALIZE Them! Then you can patch together one or two strings in effort to get the system in some sort of operational state while the owner digests that his $12,000 ($300 each x 40) battery is toast but even if you could fix it, it's just a bad band-aid and he needs to pony up another $8k-$12k for a real battery bank. Gotta go, good luck! Travis Creswell Ozark Energy Services -------------------------------------------------------------------------------- _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.709 / Virus Database: 270.14.88/2537 - Release Date: 11/30/09 11:05:00
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