I wonder if it is the capacitive charge common on larger arrays that is seen as
a problem.
-----Original Message-----
From: "Jeff Irish" <[email protected]>
Sent: 3/25/2014 21:33
To: "RE-wrenches" <[email protected]>
Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof
August,
We're seeing multiple inverters with the same error, and not getting the best
of answers or support from SMA on fixing the problem so far. And this is not a
metal roof; it's PanelClaw on EPDM.
Jeff Irish
Hudson Solar
________________________________
From: [email protected]
[[email protected]] on behalf of August Goers
[[email protected]]
Sent: Tuesday, March 25, 2014 8:41 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof
Hi Marco,
Did you ever make any progress on this issue? We’re having an interesting issue
with one of the new Sunny Tri-Power inverters (a 24 kW unit in this case) where
we get an error “residual current too high.” We’ve only done a little
troubleshooting so far but I don’t think we have a ground fault.
Best,
August
Luminalt
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]<mailto:[email protected]>]
On Behalf Of Marco Mangelsdorf
Sent: Friday, March 14, 2014 9:56 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof
Probably not.
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]] On Behalf Of RE Ellison
Sent: Friday, March 14, 2014 1:24 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof
Is the metal roof grounded? Just a fast thought.
bob
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]] On Behalf Of Marco
Mangelsdorf
Sent: Thursday, March 13, 2014 10:31 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof
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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