[RE-wrenches] Friend with system needs help

[Brian Mehalic]

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>
>
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> *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
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>
>
>
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