[RE-wrenches] Radian inverter high pitch whisteling

[Jerry Shafer]

Wrenches
New or older system, first l would check all your connections both AC and
DC as it may be a bad or loose connection, has anything changed? I would
next continue with your direction by shutting down loads while you can here
the noise. What type of lighting do you have, I have ran Outbacks for
outdoor concerts without any issue both the FX and Radian. Metal is also an
antenna for noise, is your inverter the grounding location inside where the
neutral and ground are bonded.

On Tue, May 26, 2020, 2:20 PM Dana <Dana at solarwork.com> wrote:

> O-Wise ones;
>
>
>
> I have a Radian 8KW off-grid system. I am getting intermittent (one day it
> is there & then the next it is not) very high pitched & faint but
> continually rising pitch whistling & white noise on the stereo, the boom
> box, basically anything with a speaker.
>
>
>
> First suspect was:   Pentair variable freq. & variable voltage 3P wild AC
> well pump & controller, but the sound happens when the pump is off or on.
> The controller is always on/awake.
>
> 2nd   suspect: 1 HP septic lift pump, again sound happens weather on or
> off.
>
>
>
> Which gets me back to the inverter. I have not contacted Outback Eng. As
> most of the techs are younger than the Radian inverter series…..
>
>
>
> Anyone else encountered this?
>
> Suggestions on getting rid of this?
>
> The House has metal roof & walls for wildfire protection & systems are
> extremely shielded & grounded.
>
> It is not audible while music playing at normal volumes & only heard while
> in between selections or extremely quiet passages.
>
>
>
> As always; Thanks for the suggestions in advance.
>
>
>
>
> ----------------------------------------------------------------------------
>
> Dana Orzel                                           NABCEP # 051112-136
>
> Cell - 208.721.7003                     Email - dana at solarwork.com
>
> Great Solar Works, Idaho Inc                    www.solarwork.biz
>
> ID PV Contractor - # 028765 -         ID PV Electrician # 028374
>
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