rc-faults and
> loose connection issues. It takes a lot of persistence.
>
>
>
> August
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Dave Tedeyan
> *Sent:* Thursday, November 10, 2016 10:14 AM
> *To:* RE-wre
.
August
*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Dave Tedeyan
*Sent:* Thursday, November 10, 2016 10:14 AM
*To:* RE-wrenches
*Subject:* [RE-wrenches] SMA Arc-Fault
Hi All,
Maybe someone will have some ideas for why a couple inverters keep arc
1:07 AM (GMT-10:00)
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] SMA Arc-Fault
Greetings Dave,
Have you considered possibly installing a hybrid type transient
voltage surge suppressor (TVSS), to include filters to remove high
frequency EMI/RFI? Or possible a straight line
Greetings Dave,
Have you considered possibly installing a hybrid type transient
voltage surge suppressor (TVSS), to include filters to remove high
frequency EMI/RFI? Or possible a straight line filter device? If
this nuisance arc fault issue is still occurring and it may be related
to an AC issu
You can use a Fluke 435 series, it will reveal any harmonics and record the
energy levels for each harmonic. It has a scope feature. You can rent one
pretty cheaply and record 24 hours of data. I can send you a sample report
from mine if you want.
On Sun, Nov 13, 2016 at 9:36 PM, Dave Tedeyan wro
lto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Dave Tedeyan
*Sent:* Sunday, November 13, 2016 5:37 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] SMA Arc-Fault
Howie,
Yes, we have actually already replaced both inverters on site and the
issues are still happening. At this p
Howie,
Yes, we have actually already replaced both inverters on site and the
issues are still happening. At this point I doubt that we could have
gotten 4 units with faulty arc fault sensors...
Drake,
I am beginning to think that it may be some noise from the utility.
Would you know of a way to te
Electrical noise coming in from the utility side
can also cause an arc fault code.
At 07:32 AM 11/11/2016, you wrote:
This array is a ground mount, so not on a roof, and no radio towers nearby.
As for grounding, The array and the shed with
the interconnection point are in the same area.
There a
Sorry, I meant "Dave"...
Howie Michaelson
NABCEP Certified Solar PV Installer™
Sun Catcher
Renewable Energy Systems Sales and Service
VT Solar Electric Incentive Partner
802-272-0004
On Nov 11, 2016 7:33 AM, "Dave Tedeyan" wrote:
> This array is a ground mount, so not on a roof, and no radio t
Hi Dane,
It was a few years ago, but I believe we had an arc fault with the same
type of array setup (although I'm wondering now if they were -12s - I'm
pretty sure they were -22s). After checking everything twice, we ran 1
string at a time and still got the arc fault. After badgering tech support
This array is a ground mount, so not on a roof, and no radio towers nearby.
As for grounding, The array and the shed with the interconnection point are
in the same area.
There are a couple ground rods there, which everything on the AC side is
connected to,
including a #6 wire from each inverter. t
Dave.
We have many TL-22 in the field and they will detect faults even when they
are normal contactor faults, have you made sure the SW is the latest, last
I checked it is 2.65.3R and it may have a patch in there, you can turn off
the feature for testing only and see if you melt something down but
I have found that single point grounding in large complex systems can
solve a lot strange problems. Just a thought.
BZ Products INC.
8801 Gravois Rd.
St.Louis MO 63123 USA
314-644-2490
www.bz-products.net
On 11/10/2016 3:20 PM, Drake wrote:
Is your array on a large metal roof, or is it where i
Is your array on a large metal roof, or is it
where intense radio signals could be getting
picked up by your racking? Either of these
conditions could potentially be your problem.
At 01:37 PM 11/10/2016, you wrote:
Daryl,Â
That is what I thought at first. Very rare, but
I suppose not impossible
Dave,
We have seen false arc-faults on numerous SMA installs. I have at least
two where we have spent longer troubleshooting than installing the array
(basically removed and re-installed all components). SMA is very little
help and ultimately encourages us to deactivate the arc-fault feature,
ag
Daryl,
That is what I thought at first. Very rare, but I suppose not impossible
that I
would have two inverters with bad arc fault detectors. But since we are
still
getting arc faults after replacing the inverters, I am thinking that it
must be
something else.
Cheers,
Dave
*--*
*Dave Tedeyan*
There is at least one company (nameless at this point, but not SMA) that
has been providing replacements for swapping out faulty arc fault
detectors in their inverters. Could it be possible you have a bad
detector?
Daryl
> Hi All,
>
> Maybe someone will have some ideas for why a couple inverter
Hi All,
Maybe someone will have some ideas for why a couple inverters keep arc
faulting:
-There are two SB7000TL-22 inverters, Sunpower branded.
-3 Strings of 7 SPR-327's to each inverter. Kept separate until the
inverter.
-Ground mount about 50' from the shed where the inverters are located
(ind
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