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

Chris Mason cometenergysystems at gmail.com
Wed Mar 26 04:31:19 PDT 2014


If the problem is capacitive, it ought to be possible to fit a high
resistance conductor between ground and the center point of the arrays to
discharge the capacitive charge without affecting power performance.


On Wed, Mar 26, 2014 at 6:13 AM, Glenn Burt <glenn.burt at glbcc.com> wrote:

>  I wonder if it is the capacitive charge common on larger arrays that is
> seen as a problem.
>  ------------------------------
> 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] *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<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<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,
>
> [The entire original message is not included.]
>
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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