Quattro-II abuses power assist while current limit is not reached

Hey.

My gear is Quattro-II 48/5000/70-2x50 with Cerbo GX and Dyness LiFePo4 batteries.

Everything is up-to-date:

Expected behavior: power assist only kicks in when AC current limit is reached.
Example:

  1. AC current limit is set to 10A;
  2. AC voltage is 230V;
  3. As long as power consumption is below 2300W power assist never kicks in.

Yes, I understand that some power consumption peaks might be significantly higher than average power consumption figures.

Actual behavior (wrong): power assist kicks in constantly while consumption is not even near the AC input current limit.
Example:

  1. I have some load which on paper can consume up to 2000W in total which it never does according to 3 different power meters that I tried (including Quattro-II itself);
  2. According to VRM the AC input power never exceeded 700W;
  3. According to VRM the AC output power never exceeded 900W;
  4. According to VRM the AC input current never exceeded 8.5A;
  5. According to VRM the AC input voltage never dropped below 206V (at that moment the current was 7.8A).

And here’s the problem:
Power assist keeps kicking in constantly when I set AC input current limit to 10A, 13A, 16A, 25A and even 32A!

When I set AC input current limit to an insane 63 Amps it finally stops doing that!

Also I’ve managed to take this screenshot:

It makes no sense!
214.3V at 7.8A is 1671.54W, not 516W
But maybe it’s just current and voltage figures being shown out of sync.

What kind of load do you have, resistive or inductive ?

What firmware version are you running ?

What kind of load do you have, resistive or inductive ?

It might be inductive.
I’m running two 3d-printers and a computer.

My point is that if Quattro-II was relying on the same mesurements that Cerbo GX reports to VRM it would have worked perfectly fine.

What firmware version are you running?

Which firmware? Quattro or Cerbo GX?

Quatro is running v552 and Cerbo GX is running v3.52.

I believe all loads have switching power supplies , you might have interference between the mp and the loads. To solve this you’d need a massive filter, or you could try a 500-1000 w heater as ballast for the mp.