Quattro does not work well with a small generator

DIY
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1

I have a 3-phase system with Quattro 2 with Dynamic ESS, and also solar panels with an inverter connected to AC output 1. The grid is connected to AC input 2, and a small generator is connected to AC input 1.

When connected to the grid, the entire installation works well. If the grid fails, the battery takes over properly. However, if I want to charge the battery with my generator, the full load goes directly to the generator.

I have already tried various settings, but so far the load remains entirely for the generator.

The dynamic current limiter is set to 3 A;

the AC1 input has generator grid code NO LOM.

The UPS function is currently active, but I have also tried without it.
I have also tried the weak AC setting on or off.

Power Assist is currently on, boost factor 2.

Is there anyone who has a similar installation that actually works and can give me the correct settings?

2

Its going to be difficult as the settings are usually unique to the generator.in the set up.
What size inverters vs what size generator?

And you are saying the inverters are not obeying the 3a per phase limit?

3

The AC Input Current Limit is the parameter that controls the AC input power and is usually set to its maximum value by default.

The minimum varies by model. For example a 5000 VA 230 volt Quattro II has a minimum AC input current limit of 6 amps when Power Assist is turned on. So you may not be able to throttle back the Quattro far enough to avoid a generator overload.

4

hello Lx
i am using Quattro-II 48/5000/70-2x50
and a generator capable of delivering 3x10A, but in my test phase I am currently using a max 3A limit.

If I switch off the grid with this setting and start the generator, it will supply power to the installation, and if I increase the load to 3x 8A, that is drawn directly from the generator and the battery will not provide support, not even after 5 minutes, which I would actually expect.

5

Thanks Kevin, so I do indeed have the quattro II 48/5000 and have enabled power assist
and I can work fine with the 6A limit
but with the test I tried, I had an 11A load on one phase and a 1A load on the other 2 phases, and then these loads went through 1-to-1 to the generator with no boosting of the battery

6

Today I tried something different by removing all assistants; now the battery did assist, and the generator has a load of 6A as the lowest limit the system accepts. I tried a lower setting of 3A, but the setting jumps back to 6A.

I can work with this 6A.

But why doesn’t this work with the ESS assistant?

7

Ess dynamically controls the input so it’s a bit of a conflict sometimes. And with the added complexity of DESS on your system.