[RE-wrenches] SMA arc faults

[Jerry Shafer]

Over the years every SMA arcfault has been real, l am also not saying
hazard, well, AC, welding, all creat Arc noise in the system and it can be
from a normal contactor arc. I have also seen AM arc faults caused by
defective or knock off MC connectors, in adequately stripped wires that
result in the screw down connection on the insulator causing arc in the
connector.
Jerry
NABCEP PV Inspestor

On Sat, Dec 18, 2021, 6:07 AM Mac Lewis <maclewis1 at gmail.com> wrote:

> Hi Wrenches,
>
> I have spent this last week clearing arc faults on SMA inverters.  There
> never appears to be a true arc event, just the occasional event and then
> lockout.
>
> What is the best approach to fix these tripping inverter issues?  Is there
> a way to decrease the sensitivity?  Any procedures that are effective at
> keeping this from happening?  All connections are good and tight and triple
> checked.  Anyway to remotely clear these faults?
>
> Thanks
>
> --
>
>
>
> Mac Lewis
>
> *"Yo solo sé que no sé nada." -Sócrates*
> _______________________________________________
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> http://www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> http://www.members.re-wrenches.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20211218/0d457fbb/attachment.htm>