Inverter issue -- they say generator dirty wave

[richardkillmon]

Hello to all,

I have an year old Onan 10K generator and a MasterVolt inverter issue.
On shore power the inverter works perfectly but on generator power the inverter start a 2 minute cycle over and over again. It starts out Bulk charging for 2 minutes (normal) and the charger shuts off for 2 minutes and then back to normal for 2 minutes.

MasterVolt states that my generator frequency wave is close but not perfectly clean and I need to filter the power.
Generator company has checked unit twice and all is normal.

Has anyone heard of this before?
What kind of filter do I add? UPS??
Is it the inverter or my generator?
What can I do?

Thanks

Rick

[Utahclaimjumper]

 It looks like your talking about a CONVERTER,, or possibly an inverter/ converter.. An inverter changes 12VDC to 120 V AC .>>>Dan

[richardkillmon]

Yes, I have a 4 AGM batteries that supply my outlets with 120 outlets once the inverter does it magic.

[luvrbus]

Does it have a battery temperature sensor? my Magnum went crazy and Magnum sent me a new battery sensor to solve the problem     

[richardkillmon]

Yes has battery sensor.
The Inverter tech checked all settings and wires for any errors - none.

[buswarrior]

Get a "kill-o-watt" off Amazon, and check the hertz of your generator.

Generators don't make "dirty" power, that phrase is reserved for old, choppy, modified wave inverters.

Curious what the generator voltage is doing when the device in question is getting messed up?

Happy coaching!
Buswarrior

[richardkillmon]

thanks

[richardkillmon]

60 Hertz

[Utahclaimjumper]

It don't get any better than that,, does the generator bogg down a bit when under load ?? >>>Dan

[richardkillmon]

The RPMs never change on it

[Utahclaimjumper]

 That means your frequency never changes and that's a good thing.>>>Dan

[RichardEntrekin]

Is it possible that the transfer switch is flaky, and not passing clean power to the inverter/charger?  Can you temporarily wire around the xfer switch?

[richardkillmon]

I have a manual transfer box that I turn to left for shore power or right to generator power.
Should I bypass this? Could the contacts be corroded?

Thanks

Rick

[richard5933]

I have a manual transfer box that I turn to left for shore power or right to generator power.
Should I bypass this? Could the contacts be corroded?

Thanks

Rick

Rather than bypass, you might confirm that all the terminals are fully seated and tight, even the ones on the bottom. There will likely be 9 terminals in all (L1, L2, and Neutral for each Generator, Shore Power, Line Out to Breakers).

The terminals can get loose over time and the result is often what you're describing. When you test them for being tight, be sure to give them a good crank - they can stick in place after a few years and you'll think they're tight, but another 1/4 or 1/2 turn might be possible once they break free.

[richardkillmon]

thank you for that help.