[RE-wrenches] Friend with system needs help

Jay jay.peltz at gmail.com
Wed Nov 18 13:42:16 PST 2015


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
>  
> <image001.png>
>  
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