[RE-wrenches] Friend with system needs help

Thu Nov 19 11:13:52 PST 2015

Hmm, interesting. I didnt even know they had a frameless version. The ones
i have are SP-150P Siemens and have a very nice frame and jbox on back.
Probably my initial comment didnt make sense to you if you have a different
mod than i was referring to. Further troubleshooting should include a clamp
ammeter and looking for half the current from any module to see if any of
the blocking diodes have opened. Do these frameless mods have blocking
diodes somewhere?

Roy Rakobitsch
NABCEP Certified Small Wind Installer®
Certified Advanced Tower Climbing, Safety & Rescue
Wind/PV Design Engineer
Windsine LLC
631-514-4166
www.windsine.org
On Nov 19, 2015 2:07 PM, "Steve Jefferson" <Steve.Jefferson at sma-america.com>
wrote:

> 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.jefferson at SMA-America.com
>
> www.SMA-America.com <http://www.sma-america.com/>
>
>
>
> [image: cid:image001.png at 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
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> attachments thereto. Thank you.
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>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
> Behalf Of *Brian Mehalic
> *Sent:* Thursday, November 19, 2015 10:47 AM
> *To:* RE-wrenches <re-wrenches at 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.peltz at 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.Jefferson at 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 (direct)
>
> Fax: +1 916 625 0871
>
> Mobile: +1 916 622 4253
>
> Email: Steve.jefferson at 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-bounces at lists.re-wrenches.org
> <re-wrenches-bounces at lists.re-wrenches.org>] *On Behalf Of *Jay
> *Sent:* Wednesday, November 18, 2015 1:42 PM
> *To:* RE-wrenches <re-wrenches at 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.Jefferson at 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 (direct)
>
> Fax: +1 916 625 0871
>
> Mobile: +1 916 622 4253
>
> Email: Steve.jefferson at 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.
>
>
>
>
>
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