Irish
Hudson Solar
--
*From:* re-wrenches-boun...@lists.re-wrenches.org [
re-wrenches-boun...@lists.re-wrenches.org] on behalf of August Goers [
aug...@luminalt.com]
*Sent:* Tuesday, March 25, 2014 8:41 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Unusual problem with SMA TL invert
the capacitive charge common on larger arrays that is
> seen as a problem.
> --
> From: Jeff Irish
> Sent: 3/25/2014 21:33
>
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal
> roof
>
> August,
>
&g
I wonder if it is the capacitive charge common on larger arrays that is seen as
a problem.
-Original Message-
From: "Jeff Irish"
Sent: 3/25/2014 21:33
To: "RE-wrenches"
Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof
August,
W
.@lists.re-wrenches.org
[re-wrenches-boun...@lists.re-wrenches.org] on behalf of August Goers
[aug...@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
enches] Unusual problem with SMA TL inverter on metal
roof
Probably not.
*From:* re-wrenches-boun...@lists.re-wrenches.org [
mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *RE Ellison
*Sent:* Friday, March 14, 2014 1:24 AM
*To:* 'RE-wrenches'
*Subject:* Re: [RE-wrenches]
Probably not.
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@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
Yes, SPR 327s.
marco
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Gregory
Seelhorst
Sent: Thursday, March 13, 2014 9:21 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal
roof
Marco
What is the make and model of the modules? SPR-327s perhaps?
Greg
On Mar 14, 2014 4:53 AM, "Marco Mangelsdorf" 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 fro
ional Inverter Design Engineer (among many other things...)
On Fri, 3/14/14, Chris Mason wrote:
Subject: Re: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof
To: "RE-wrenches"
Date: Friday, March 14, 2014, 9:07 AM
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 wrote:
> Friends,
>
>
>
> We have run across an odd technical problem at
Is the metal roof grounded? Just a fast thought.
bob
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@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
I could see how they might get confused between hi-pot
something-or-other and capacitance.
But for hi-pot arc-over, you don't really have to have much
capacitance. Just one spot with
too little spacing for it to arc across is enough to fail. i.e. Hi pot
problems unfortunately don't
creep u
I had this issue way back with pvl's unisolar and it was always written off
as hi pot leakage in the conductors and its good to see that it was put to
paper
On Mar 13, 2014 11:20 PM, "b...@midnitesolar.com"
wrote:
>
> Interesting app note. Interesting problem.
>
> How far from this metal roof (g
Interesting app note. Interesting problem.
How far from this metal roof (grounded I presume) is the bottom of the
modules ?
This app note is mainly talking about the area of the module from the
mounting bracket which should
be quite a bit less than the modules area from a distance above a
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