[RE-wrenches] AM noise on batteryless inverters

[frenergy]

Along these "AC noise" lines.......

        About 6-7 years ago I installed 2, SMA 2500U inverters at a friend's 
(most dangerous situation, installing for a friend...like selling a friend 
your used car!) place.  This guy is a Ham radio operator AND the inverters 
are on the wall opposite all of his gear (what was I thinking?) 
Fortunately, he's still my friend...no noise can be detected on his ham 
radios.

Bill

Feather River Solar Electric
4291 Nelson St.
Taylorsville, CA  95983
530-284-7849/6544 fax


----- Original Message ----- 
From: "jay peltz" <jay at asis.com>
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Sent: Friday, June 18, 2010 12:00 PM
Subject: Re: [RE-wrenches] AM noise on batteryless inverters


> Hi Darryl,
>
> Personally I've tried this and had no luck with offgrid
>
> But the issue is that a very competent installer friend, whos not on the 
> wrenches has had issues with PV powered and AM radio noise, but not with
> SMA or Fronius.
> He's actually swapped inverters same location from PV to SMA and the AM 
> noise was gone and has had this problem enough times to no longer use them 
> for folks who like to listen to AM during the day.
>
> So I'm trying to find if anyone else has had anything similar?
>
> Thanks,
>
> jay
>
> peltz power
>
>
> On Jun 17, 2010, at 9:30 PM, Darryl Thayer wrote:
>
>> I have heard that putting small ferrite donuts around the AC and DC wires 
>> will reduce this noise.  Place them inside the inverter.  they are 
>> avaiable from DigiKey
>> Darryl