Dear friends,
I had a 25kW SolarEdge system installed at my home early this year. Here
are some things that I learned :
* The installers, although generally well-intentioned, had no
understanding of what EMI is, why it is significant, how it is generated and
propagated, or how to mitigate it.
* Installers (Management and field personnel) had no interest in
becoming better informed about RFI. Just git 'er done.
* Engineers at SolarEdge were better-informed but the lack of
background among installers meant that engineering recommendations were only
partially implemented.
* The Installers just do what they are told (more or less) by their
supervisors whose training is in solar PV systems, not RF.
* Some of them did not even know what amateur radio is.
73,
W9IP
-----Original Message-----
From: RFI <rfi-bounces+nlsa=nlsa.com@contesting.com> On Behalf Of Tony
Sent: Wednesday, July 17, 2024 1:45 AM
To: rfi@contesting.com
Subject: [RFI] Solar Panel RFI Update From K2MO: July 17, 2024
All:
I was able to take a close look at my neighbors solar panel installation
with the panels removed and found that the cables that feed the panels were
fed straight through the ferrite clamp-ons without ANY turns around the
core. Most of that cabling was not twisted around itself either.
The lack of cable turns around each ferrite core has to be reason why the
suppression had little effect on the RFI the system produces. I also found
the ferrite they used on the installation and there appeared to be
2 dozen large and small clamp-ons for 28 solar panels.
The installers are scheduled to be here today (July 17th) so I'll have a
chance to speak with them and watch how they reinstall the system.
I was going to attach the pictures I took, but I don't believe this
reflector accepts attachments?
If anyone is interested, I can send them direct.
Tony -K2MO
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