[RE-wrenches] Friend with system needs help

[Jerry Shafer]

Wrenches
Have you looked at cell fractures, l just replaced a module running on
enphase and it had fractures in the cell VOC was fine but under load there
was just over 50% power. I have also had ribbin connection fail, you might
be able to see burn marks un the back of the modules.
Jerry
On Nov 18, 2015 12:17 PM, "Jay" <jay.peltz at gmail.com> wrote:

> 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>
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>
>
>
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