[RFI] Solar Edge RFI in Kings Park, New York. Update September 16, 2018

[Tony]

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