[RE-wrenches] Radian inverter high pitch whisteling

[Jay]

Another simple test is to start the generator when this happens. 

Does it continue with the generator, then  it’s a load somewhere. 
If not then more digging. 

I’ve not had this issue before but with the radian you can turn off one or the other power modules which can narrow that down. 
I have had PM failure before. Was a very early version. 

Jay
Peltz power. 

> On May 26, 2020, at 2:41 PM, Jerry Shafer <jerrysgarage01 at gmail.com> wrote:
> 
> 
> 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
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