[RFI] Solar Edge RFI Update 11/29/18

[MICHAEL ST ANGELO]

Tony,

Thanks for the update.

Does anyone know if there are issues using clamp-on ferrites exposed to the weather?

I'm concerned about the Ferrite material characteristics changing with moisture ingress, damage caused by ice and UV damage of the ferrite and plastic clamp.

Tony, you may want to ask the Solar Edge engineers about these concerns.

I always enclose my ferrites in an enclosure.

Mike N2MS


> On November 29, 2018 at 2:05 PM Tony <dxdx at optonline.net> wrote:
> 
> 
> All:
> 
> Solar Edge installed RFI suppression on my neighbors solar system on 
> Monday. They installed 5 clamp-on Ferrites on half the Optimizers which 
> left the rest of the system open to RFI. Needless to say, this did 
> little to suppress the noise.
> 
> The company will not wrap cables around large cores because they say 
> that doing so would violate the cables bending radius and could lead to 
> cracks. I spoke to the engineer today and he maintains that using 
> several clamp-on Ferrites is the equivalent of wrapping the cable around 
> a core.
> 
> So that's where we are. I should find out the next course of action this 
> week. I'll keep the group posted.
> 
> Tony -K2MO
> 
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