[RE-wrenches] Inverter AM Interference

boB Gudgel boB at midnitesolar.com
Wed Jul 15 17:30:11 PDT 2009


SOLARPRO at aol.com wrote:
> It disappears when the breaker is thrown.
> Pat Redgate
OK, is that the AC breaker or the PV input breaker ?

How about when you throw the PV input breaker (when not MPPTing) ?  Does 
that help ?

i.e.  We know now that it's the inverter's auxiliary power supply, but 
is the signal also getting
out (radiating) through the PV lines ?  It could also come out the PV 
negative so throwing just the PV input
positive breaker, by itself, may not tell the whole story.

If it's coming through the AC line, then a line filter, or running all 
of the AC side wires through
a ferrite toroid may help.

boB






>  
> In a message dated 7/15/2009 5:11:58 P.M. Pacific Daylight Time, 
> boB at midnitesolar.com writes:
>
>
>     > SOLARPRO at aol.com wrote:
>     >
>     >   This is a brand new 5000 US.  EMT on all dc runs.  The radio is a
>     > BOSE...and is 27 feet away.  The interference is runs 24/7... so it
>     > must be AC related.
>     >
>
>     Does the radio noise go away when you completely disconnect the SMA
>     inverter ?
>
>     boB
>
>     _______________________________________________
>     List sponsored by Home Power magazine
>
>     List Address: RE-wrenches at lists.re-wrenches.org
>
>     Options & settings:
>     http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
>     List-Archive:
>     http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
>     List rules & etiquette:
>     www.re-wrenches.org/etiquette.htm
>
>     Check out participant bios:
>     www.members.re-wrenches.org
>
>
> ------------------------------------------------------------------------
> Can love help you live longer? Find out now 
> <http://personals.aol.com/articles/2009/02/18/longer-lives-through-relationships/?ncid=emlweuslove00000001>.
> ------------------------------------------------------------------------
>
> _______________________________________________
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>
>   




More information about the RE-wrenches mailing list