[RE-wrenches] Unusual problem with SMA TL inverter on metal roof

Chris Mason cometenergysystems at gmail.com
Fri Mar 14 07:07:39 PDT 2014


Typically when capacitance is a problem, the answer is inductance. Have you
looked at adding some chokes between the DC negative and ground to
counteract the capacitance?


On Thu, Mar 13, 2014 at 10:31 PM, Marco Mangelsdorf <marco at pvthawaii.com>wrote:

>  Friends,
>
>
>
> We have run across an odd technical problem at our commercial install at a
> laundromat on our island.   Attached is the description of the issue from
> SMA.  We don't know much except that we are switch out the TL inverters to
> the old style US inverters because SMA has no fix for the phantom ground
> tripping.  The issue is beyond our feeble understanding.
>
>
>
> Any observations to share?
>
>
>
> Thanks,
>
>
>
> marco
>
>
>
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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