THERED117
Sparky, Sparky, yeah, yeah, yeah
As much as I hate to admit it I think I have found the root cause of my problems. After talking to the guys at SS yesterday (they where wondering if a frequency imbalance might have caused it. So I put a scope on each leg of the generator and I might have to agree. It is noisy and seem like the sine wave are capping a little. This is with me using my 4 ton AC as a load while checking it. It's supposed to be clean with in 3%. In the future I have a chargeveter to separate gen from inverter. Even if I get power ran to my place I think I will not connect AC to the inverters again. I don't want to take the risk. PV only!
This should solve the back up changing needs.Well the thd of 3% is the THD_U meaning the voltage THD, probably for a fairly sinusoidal pure 50hz load.
Your source has a very low short circuit level.
So if you have a big load drawing lots of harmonic currents, it might degrade the voltage shape a lot.
Can you try with a pure resistor of the same power rating or similar?
My guess is you are pulling lots of harmonic currents, which causes a lot of voltage drop internally to the inverter, which in turn looks like **** if you look at the output voltage of the inverter.