Quatro AC in setting Grid or Generator

Q&A and troubleshooting
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1

I have 6 Quatro’s 15 inverter chargers with

three phase Grid feed on ACin 1
the three Phase generator is in the Grid feed line also on AC IN 1

WHen the Grid falls away the Generator can start if allowed by the Victron Cerbo Gen controll. ( if the battery SOC reach 30% and stop when the SOC reach 60%) ( Saving some Diesel.)

The Fronius Verto inverters on the AC out 1 adheres to the Rule 1:1

When the generator starts during Grid loss the input is limited and the charging is slow.
When the AC Input is changed to Generator the AC input current is limited to the values in the settings .

Why would this happen ?

2

What size generator? What are your settings?

And it doesn’t behave the same way with grid?

If not what is the difference between the grid and the generator? Such as voltage frequency and stability?

Is there an erro message saying slow charging or it is just not really charging?