With regard to the sunny island - what is the "best" kluge to address the 120/240 issue? (IMHO - the best would be for SMA to deliver 120/240 output). We just did a system with a pair of outback PSX-240 transformers to step down the SB-7000 inverter (7.2kw PV) to 120 VAC to allow it to sync with the SI (tied into the supported loads panel).
We went with a pair (paralleled) based on capacity... next time I'd like to reduce the parts/labor... Eaton? Torroid? The enclosure and breakers are nice, but do I need these breakers in this application? For a brighter energy future, Geoff Greenfield President Third Sun Solar & Wind Power Ltd. 340 West State street, Unit 25 Athens, Ohio 45701 (740) 597-3111 fax: (740)597-1548 www.third-sun.com Clean Energy - Expertly Installed -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Phil Schneider Sent: Thursday, August 07, 2008 3:35 PM To: RE-wrenches Subject: Re: [RE-wrenches] Large offgrid system Jay, I did some design work recently for a larger capacity system. You need a "multi-cluster" box for more than four Sunny Islands, which would add some complexity and cost. I liked all the auxiliary control options possible with the SMA - such as controlling relays for multiple AC inputs. Phil Phil Schneider Creative Energies From: jay peltz <[EMAIL PROTECTED]> Reply-To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Date: Thu, 7 Aug 2008 08:24:46 -0700 To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Subject: [RE-wrenches] Large offgrid system HI All, I"ve got a very large off grid system,, could be 30kw of inverter yea I know crazy big. My question is about which inverters to use, Outback 10 stack or SMA sunny island. comments, pros/ cons. thanks, jay peltz power _______________________________________________ List sponsored by Home Power magazine RE-wrenches@lists.re-wrenches.org http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine RE-wrenches@lists.re-wrenches.org http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://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. Version: 7.5.524 / Virus Database: 270.5.12/1597 - Release Date: 8/7/2008 5:54 AM _______________________________________________ List sponsored by Home Power magazine RE-wrenches@lists.re-wrenches.org http://lists.re-wrenches.org/listinfo.cgi/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
