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

[Glenn Burt]

I wonder if it is the capacitive charge common on larger arrays that is seen as a problem.

-----Original Message-----
From: "Jeff Irish" <jeff at hudsonsolar.com>
Sent: ‎3/‎25/‎2014 21:33
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
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: re-wrenches-bounces at lists.re-wrenches.org [re-wrenches-bounces at lists.re-wrenches.org] on behalf of August Goers [august at luminalt.com]
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: re-wrenches-bounces at lists.re-wrenches.org<mailto:re-wrenches-bounces at lists.re-wrenches.org> [mailto:re-wrenches-bounces at lists.re-wrenches.org<mailto:re-wrenches-bounces at lists.re-wrenches.org>] 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: re-wrenches-bounces at lists.re-wrenches.org<mailto:re-wrenches-bounces at lists.re-wrenches.org> [mailto:re-wrenches-bounces at lists.re-wrenches.org] 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: re-wrenches-bounces at lists.re-wrenches.org<mailto:re-wrenches-bounces at lists.re-wrenches.org> [mailto:re-wrenches-bounces at lists.re-wrenches.org] 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

________________________________
No virus found in this message.
Checked by AVG - www.avg.com<http://www.avg.com>
Version: 2014.0.4336 / Virus Database: 3722/7186 - Release Date: 03/12/14
________________________________
No virus found in this message.
Checked by AVG - www.avg.com<http://www.avg.com>
Version: 2014.0.4336 / Virus Database: 3722/7186 - Release Date: 03/12/14


[The entire original message is not included.]
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20140326/03be3364/attachment-0003.html>