[RFI] SolarEdge Finds New Source of Solar System RFI

[Tony]

All:

I recently spoke with an engineer from SolarEdge who said that they 
discovered a previously unknown source of RFI which turned out to be the 
solar panels themselves. They found that the panels were producing noise 
while physically disconnected from the system at a few installations.

They are now working with the panel manufacturers Hanwha and Trina to 
determine why a certain batch of their panels are producing RFI. The 
goal is to locate installations with the defective panels and replace them.

Cumulative RFI from multiple panels is apparently enough to cause 
serious RFI and may be the reason why my neighbors installation still 
makes noise during  the day while the system is turned off. It could 
also be the reason why the choking the Optimizers had little effect.

Tony -K2MO