[RE-wrenches] RFI from MPPT Charge Controllers

[Frank Lewon]

  We recommend making a Pi filter consisting of a 50 uH 30 amp medium Q 
coil and .1uF 100+ volt disc capacitors. Insert the Pi filter in the PV+ 
line. Wire with short direct leads to the control. Helps a lot. Not perfect.

Frank Lewon
BZ Products Inc.
7914 Gravois Road
St. Louis MO 63123 USA
314-644-2490 www.bzproducts.net


On 8/31/2010 7:00 PM, Larry Crutcher wrote:
> Does anyone know of a large MPPT controller that does not produce RFI? 
> Specifically, customers that are SWL, AM or amateur radio operators 
> need RF quiet time during the day while operating or listening. All 
> the controller I have installed make some noise. The Outback MX60 in 
> my RV decimates every 40 kHz or so with broadband noise from 160 
> meters and up.
>
> Does anyone know how the Xantrex SW, Tristar MPPT or Apollo do with RFI?
>
> Many thanks,
>
> Larry Crutcher
> Starlight Solar Power Systems
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