[RE-wrenches] Friend with system needs help

[Steve Jefferson]

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<mailto:Steve.jefferson at SMA-America.com>
www.SMA-America.com<http://www.sma-america.com/>

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