[RE-wrenches] Dog controller conflict with Outback inverter.

[boB Gudgel]

  On 8/27/2010 7:51 PM, cvsolar at aol.com wrote:
> Help!
>    Has anyone delt with RF interference between a dog control device 
> and GVFX3524.  It seems that some frequency in the inverter (or maybe 
> the FlexMax 80) is cancelling the emitted signal from a dog control 
> device which shocks the dog when the signal gets weak (dog too far 
> from house).  Every time the inverter starts to sell, the collar on 
> the dog starts shocking the animal.  Our only possible solution so far 
> is to build a Faraday cage around the inverter to see if the 
> interference is reduces sufficiently.  I have been looking at brass 
> mesh, aluminum window screen, and copper mesh.  Any ideas?
> John Blittersdorf
> Central Vermont Solar & Wind.
>
>

First, I am quite surprised (Shocked actually !),  that the design of 
this dog
shock collar would allow it to shock without the proper coding from the
transmitter, weak signal or not.
I would not rule out calling the company that makes the shock collar too,
and their EMI susceptibility.  Maybe they have seen this problem before
and can have you change a code or might even replace with more secure unit ?
The interference that you might get from an inverter or charge 
controller just
shouldn't have this effect.

The lower the frequency of the dog collar signal, the smaller the mesh size
you can get away with.   But that assumes the RFI is coming directly from
the inverter or controller itself.  It's most likely coming from the wiring.

One thing to try, that is, to rule out (or in) the charge controller is 
to lower
the sell voltage so that it will sell for a few moments at night (from the
batteries),  when the CC would not be supplying power and radiating.

Hopefully you can test this without the use of the dog having to tell you
when it is being shocked !

That's my input for tonight.   I'm interested in what the dog collar company
has to say, for sure.

boB





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