All 4 strings were run separately. And all 4 ran significantly lower than they should. Based off of calculations done.
Dan was nice enough to spend some time with me on the phone about this. Think I may have another visit and more TS to do. Probably wont be until after the holidays, but I will up if anything is found. These mods are junk in my opinion, the lack of frame makes them weak. And when they were torn off the other roof in LA, the foam backing blocks just cracked and fell apart. Who knows what damage has been done to them. Thanks SMA America, LLC Steve Jefferson Service Line Supervisor 3925 Atherton Ave Rocklin, CA 95765 - 3714 U.S.A. Tel: +1 916 625 3185 (direct) Fax: +1 916 625 0871 Mobile: +1 916 622 4253 Email: steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com> www.SMA-America.com<http://www.sma-america.com/> [cid:image001.png@01CF1CFA.FE18BEB0]<http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Brian Mehalic Sent: Thursday, November 19, 2015 10:47 AM To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Subject: Re: [RE-wrenches] Friend with system needs help Steve, I didn't see if you answered Jay regarding operating the inverter on just a single string at a time. I'd definitely try that before curve tracing. Brian Mehalic NABCEP Certified Solar PV Installation Professional™ R031508-59 PV Curriculum Developer and Instructor Solar Energy International http://www.solarenergy.org On Thu, Nov 19, 2015 at 8:31 AM, jay <jay.pe...@gmail.com<mailto:jay.pe...@gmail.com>> wrote: HI Steve, So they are all low? Then I suggest an IV curve tracer. jay On Nov 19, 2015, at 7:18 AM, Steve Jefferson <steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com>> wrote: The outputs are pretty close. That’s what is throwing me off. In most trouble shooting adventures, the problem is fairly obvious. This one, not so much. SMA America, LLC Steve Jefferson Service Line Supervisor 3925 Atherton Ave Rocklin, CA 95765 - 3714 U.S.A. Tel: +1 916 625 3185<tel:%2B1%20916%20625%203185> (direct) Fax: +1 916 625 0871<tel:%2B1%20916%20625%200871> Mobile: +1 916 622 4253<tel:%2B1%20916%20622%204253> Email: steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com> www.SMA-America.com<http://www.sma-america.com/> <image001.png><http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jay Sent: Wednesday, November 18, 2015 1:42 PM To: RE-wrenches <re-wrenches@lists.re-wrenches.org<mailto:re-wrenches@lists.re-wrenches.org>> Subject: Re: [RE-wrenches] Friend with system needs help Hi steve. Is the output from each string of 11 the same? Have you tried ruining 1 string at a time? Jay Sent from my iPhone On Nov 18, 2015, at 11:14 AM, Steve Jefferson <steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com>> wrote: Afternoon wrenches, I have a friend who I helped install second hand modules onto a pergola structure at their home. The system is as follows: 44 – Siemens SP-150 1 – SMA SB6000US-12 (XFMR unit) Since install, they have not produced half of what they should be. I have tested the diodes and they seem to be good, there were a couple that tested questionable, so they were replaced. VOC is good, but it seems that under load the system goes to garbage. I am at a loss of what/how to test anything else that may determine cause. Would a PV Analyzer help? Would there happen to be anyone in the Sacramento area with one who could come to the site? Obviously the customer will pay for their time. Thanks in advanced. SMA America, LLC Steve Jefferson Service Line Supervisor 3925 Atherton Ave Rocklin, CA 95765 - 3714 U.S.A. Tel: +1 916 625 3185<tel:%2B1%20916%20625%203185> (direct) Fax: +1 916 625 0871<tel:%2B1%20916%20625%200871> Mobile: +1 916 622 4253<tel:%2B1%20916%20622%204253> Email: steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com> www.SMA-America.com<http://www.sma-america.com/> <image001.png><http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org<mailto: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<http://www.re-wrenches.org/etiquette.htm> Check out or update participant bios: www.members.re-wrenches.org<http://www.members.re-wrenches.org/> _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org<mailto: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<http://www.re-wrenches.org/etiquette.htm> Check out or update participant bios: www.members.re-wrenches.org<http://www.members.re-wrenches.org/> _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org<mailto: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<http://www.re-wrenches.org/etiquette.htm> Check out or update participant bios: www.members.re-wrenches.org<http://www.members.re-wrenches.org>
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