The Multiplus II 230v manual states: "With its PowerAssist feature the MultiPlus-II can add up to 3 kVA"
This paragraph does not seem to apply to any specific model so it reads as if every Multiplus II model has a 3kVA limit when performing PowerAssist even if it's inverter is rated higher. Ie. Would the 48/10000 model only be able to add 3kVA to a grid connection even though it's inverter is rated at 10kVA? Or is this manual wording wrong or need further detail?
Back story (or why I ask):
I'm considering using two Multiplus II 48/5000 models for a project in France.
Have a decent (15kWh+) battery bank.
We need at least 8kW peak power delivery although this peak is very rare and usually peak power required is easily under 4kW.
Install small solar array of 4-5kW and have it connected to battery bank via MPPT.
The grid connection would be kept only for charging after a number of cloudy days and have limited solar charging supply (grid supply would be 3kVA).
Grid feed in here in France is 'complicated' so would be disabled. Although it would be nice to be able to sell surplus to the grid if the correct paperwork could be eventually arranged.
Elsewhere I have read that Multiplus II units in parallel should be considered logically as one unit, so two 48/5000 should operate exactly like one 48/10000.
If my interpretation of the manual is correct this implies that having the AC input connected and using PowerAssist is not useful as it would lead to an output power of 3kVA (grid) + 3kVA (PowerAssist). Whereas if one never connected the AC input the Multiplus II (pair in my scenario) would always run on just it's inverter which would be 10kVA total output.
Can this really be true? Does having the AC input connected and thus using PowerAssist really lead to less available output power? That sounds illogical and am hoping it's just that the wording in the manual is slightly misleading.
Have I understood all this correctly?
