Inverter issue -- they say generator dirty wave

TomC · December 16, 2020, 07:24:08 AM

Also generator may not be grounded properly.

richardkillmon · December 16, 2020, 07:30:21 AM

Thanks

luvrbus · December 16, 2020, 04:39:49 PM

Is the generator a QD 10000 Onan ?

Van · December 16, 2020, 05:26:49 PM

Richard K. What is the model # of your Master volt inverter?

richardkillmon · December 17, 2020, 05:57:19 AM

Inverter MasterVolt 12V2000W-10A 120V

Generator ON10.0HDKCA-11506-RP

Does that help

richard5933 · December 17, 2020, 06:42:07 AM

I looked at your initial post again and see that they mentioned the generator's frequency wave was not clean. I'm wondering if instead of a sine wave your generator is producing spikes somewhere in the wave. The frequency can be spot on at 60 hz and the wave pattern itself can still contain spikes or odd shapes.

Not sure how it works exactly, but if your generator uses brushes and copper commutator, I'd imagine that a little buildup in the wrong place could create spikes in the wave pattern. If the generator people are measuring the voltage and freq, they wouldn't necessary notice spikes in the wave pattern or oddly shaped waves.

Not sure if the inverter/charger is sensitive enough to the wave pattern to detect this, but that does sound like it could the kind of thing they're talking about.

richardkillmon · December 17, 2020, 07:23:22 AM

They attached an special meter/scope (I can't remember how to spell it) it showed the wave length and it was choppy not smooth. They double checked the scope by trying another power source and the line was smooth on the second power supply.

I'm going to attach an UPS rack to the inverter to see if that correct the issue.
What do you think?

richard5933 · December 17, 2020, 07:45:27 AM

They probably used an oscilloscope.

If you have an access cover which allows inspection of the brushes and commutator(s) it would be worthwhile to take a look and see if there are any obvious problems.

luvrbus · December 17, 2020, 07:58:53 AM

That is a pure sine generator with electronic controls if the generator is malfunctioning it will throw a code he can read all he has to do is hold the stop button down and it will display any codes

richardkillmon · December 17, 2020, 08:02:31 AM

we two different generator company checked generator
The inverter place checked it also
No codes
connections good
the scope shown choppy wave line compared to smooth on Commerial power

thanks for helping