Thanks Bryan,
I do not know the PV connector types for the modules or extension cables
we have not started working on it. I need to put a plan together for the
customer first.
Good to know about the Amphenol H4 issues.
Thank You
Jonathan Dixon
Dixon Power Systems
3250 N 20th St Ste 1
Lincoln, NE 68521
402-467-3240
j...@dixonpowersystems.com
----------------------------------------------------------------------
Message: 1
Date: Wed, 23 Oct 2024 16:44:51 +0000
From: Bryan Norkunas <br...@pv-cables.com>
To: "re-wrenches@lists.re-wrenches.org"
<re-wrenches@lists.re-wrenches.org>, "j...@dixonpowersystems.com"
<j...@dixonpowersystems.com>
Subject: Re: [RE-wrenches] Module snail trails
Message-ID:
<dm6pr06mb509799a96435ce8318649e11e2...@dm6pr06mb5097.namprd06.prod.outlook.com>
Content-Type: text/plain; charset="windows-1252"
Jon,
Do you recall which PV connectors were on the modules and what they used for
extension cables?
Around that time, Amphenol H4 connectors had issues due to the plastic housings
failing and allowing water into the connections.
Bryan Norkunas
PV-Cables Inc.
989 Milton Ave Ste 1D
Ferndale CA 95536
(707) 923-3000 office
www.pv-cables.com<http://www.pv-cables.com/>
[cid:aa320544-f89d-44fc-a3e9-bb468c2d9953]
[cid:867e1cba-ab13-4a98-9ecf-200189c32b6d] Please print only if necessary.
NOTE: This email message and any attachments are for the sole use of the
intended recipient(s) and may contain confidential and/or privileged
information. Any unauthorized review, use, disclosure or distribution is
prohibited. If you are not the intended recipient, please contact the sender by
replying to this email, and destroy all copies of the original message.
________________________________
From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> on behalf of Jon Dixon
via RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Wednesday, October 23, 2024 9:07 AM
To: re-wrenches@lists.re-wrenches.org <re-wrenches@lists.re-wrenches.org>
Cc: Jon Dixon <j...@dixonpowersystems.com>
Subject: [RE-wrenches] Module snail trails
Hello All,
I have a local utility with a 50Kw array installed in 2015 consisting of 200
ReneSola 250w modules and 3 SMA Tripower 15000TL-US -10. They are having Arc
fault code on two of the inverters. This has been going on for a few years now.
It happens a couple times a year generally after a large rain. They just reset
the code and it comes back to life.
They gave me a walk through and we noticed that a number of modules have snail
trails. I have attached a closeup picture I took and IR views of affected
module and non affected. It was a 90 deg day when the utility took the IR
pictures.
Causes for snail trails that I found:
* The difference in chemical properties of EVA foils and the silver
contacts
* The degradation extent of the EVA material
* Water vapor permeability of the solar panel?s backsheet material
I did find that if you have snail trails you will have micro fractures. I did
see some info that micro fractures could cause arc faults.
Finally my question is can snail trails cause arc faults also?
Thanks Jon
--
Jonathan Dixon
Dixon Power Systems
3250 N 20th St Ste 1
Lincoln, NE 68521
402-467-3240
j...@dixonpowersystems.com<mailto:j...@dixonpowersystems.com>
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------------------------------
Message: 2
Date: Wed, 23 Oct 2024 17:09:53 +0000
From: Bryan Norkunas <br...@pv-cables.com>
To: "re-wrenches@lists.re-wrenches.org"
<re-wrenches@lists.re-wrenches.org>, "j...@dixonpowersystems.com"
<j...@dixonpowersystems.com>
Subject: Re: [RE-wrenches] Module snail trails
Message-ID:
<dm6pr06mb50977334c1aa938f24f80930e2...@dm6pr06mb5097.namprd06.prod.outlook.com>
Content-Type: text/plain; charset="windows-1252"
Looking at the pictures again, I wonder if there might be a pinhole in the back
lamination that is allowing water into the module.
Bryan Norkunas
PV-Cables Inc.
989 Milton Ave Ste 1D
Ferndale CA 95536
(707) 923-3000 office
www.pv-cables.com<http://www.pv-cables.com/>
[cid:8b840384-c5f3-42a6-b643-c70a0c8359f7]
[cid:359044c7-87e0-453e-8b12-d03863f07a98] Please print only if necessary.
NOTE: This email message and any attachments are for the sole use of the
intended recipient(s) and may contain confidential and/or privileged
information. Any unauthorized review, use, disclosure or distribution is
prohibited. If you are not the intended recipient, please contact the sender by
replying to this email, and destroy all copies of the original message.
________________________________
From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> on behalf of Jon Dixon
via RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Wednesday, October 23, 2024 9:07 AM
To: re-wrenches@lists.re-wrenches.org <re-wrenches@lists.re-wrenches.org>
Cc: Jon Dixon <j...@dixonpowersystems.com>
Subject: [RE-wrenches] Module snail trails
Hello All,
I have a local utility with a 50Kw array installed in 2015 consisting of 200
ReneSola 250w modules and 3 SMA Tripower 15000TL-US -10. They are having Arc
fault code on two of the inverters. This has been going on for a few years now.
It happens a couple times a year generally after a large rain. They just reset
the code and it comes back to life.
They gave me a walk through and we noticed that a number of modules have snail
trails. I have attached a closeup picture I took and IR views of affected
module and non affected. It was a 90 deg day when the utility took the IR
pictures.
Causes for snail trails that I found:
* The difference in chemical properties of EVA foils and the silver
contacts
* The degradation extent of the EVA material
* Water vapor permeability of the solar panel?s backsheet material
I did find that if you have snail trails you will have micro fractures. I did
see some info that micro fractures could cause arc faults.
Finally my question is can snail trails cause arc faults also?
Thanks Jon
--
Jonathan Dixon
Dixon Power Systems
3250 N 20th St Ste 1
Lincoln, NE 68521
402-467-3240
j...@dixonpowersystems.com<mailto:j...@dixonpowersystems.com>
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