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 <[email protected]> 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 < > [email protected]> 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 (direct) > Fax: +1 916 625 0871 > Mobile: +1 916 622 4253 > Email: [email protected] > 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:[email protected] > <[email protected]>] *On Behalf Of *Jay > *Sent:* Wednesday, November 18, 2015 1:42 PM > *To:* RE-wrenches <[email protected]> > *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 < > [email protected]> 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 (direct) > Fax: +1 916 625 0871 > Mobile: +1 916 622 4253 > Email: [email protected] > 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: [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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