SolarEdge optimizers generate strong levels of RFI just from the power they
get from the solar panels. There is no way to shut them off, other than
disconnecting them, or covering them with something dark. SolarEdge needs
to come out and twist the wires and install ferrites on the inputs and
outputs of those noisy optimizers. They know how to do that because they
are doing that all over the country when hams complain. Fortunately, their
fix does work when they apply it to every optimizer. Unfortunately, the
installers sometimes miss one or two when they apply this fix. In that case
call them back. Even one unfiltered SolarEdge Optimizer will cause high
levels of RFI to a ham station within about 700 feet.
73,
Randy KQ6RS
-----Original Message-----
From: RFI <rfi-bounces@contesting.com> On Behalf Of Tony
Sent: Sunday, September 16, 2018 1:12 PM
To: rfi@contesting.com
Subject: [RFI] Solar Edge RFI in Kings Park, New York. Update September 16,
2018
All.
Solar Edge shut down my neighbors solar panel system this week which did
have some effect. Because it didn't disappear completely, they now think the
noise is being generated by another system in my area.
With that in mind, I went to my neighbors home with a portable HF receiver
and a loop antenna to test for noise. We turned off the main breaker in the
house before we began testing. The Solar Edge controller showed no output so
it was inactive as Solar Edge said it would be.
I turned on the HF receiver and immediately detected the same noise heard on
my home antennas. The noise was also detected when I placed the antenna near
the Solar Edge Controller located in the basement. It's the same noise on
the same frequencies so there's no mistake as to where it's coming from.
We then went outside with the portable HF setup and the noise decreased as
we walked away from my neighbors home. I waited until the panels were no
longer illuminated by the sun and the noise disappeared as it always does.
So the system is still generating RFI by a device that's being powered by
the solar panels with the system turned "off". To the best of my knowledge,
that device would be the optimizers and their switching power supplies which
can't be turned off.
The fact that the same noise is being detected at the controller seems to
indicate that the RFI is radiating into the basement and throughout the
system via the systems cabling.
Any thoughts?
Tony -K2MO
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