Hello,
I would like to explain how it works ( I must admit not reading every single post so the answers could already be given).
The boost factor is there to set the correct level for power assist. beware, this is only to set the level for the initial amount of energy and will after this be not used by the system.
The point is that IF there is a AC input limit set ( let say 10A) there is a fuse inline which is 10A , and the load will be normally below this. When there is a load getting close to the setpoint, the charger will be throttled back to 0A to reduce the change the 10A will be reached. If the load goes up further the inverter needs to act actively. The point at the level the setting is crossed is, how much does the inverter need to inject?
There are two extremes possible. 1 the load is just 10,1A so the inverter hardly needs to do anything. 2 there is a motor with an extreme high current is needed, let say 30A.
So at the boost factor 2.0 the setpoint (10A) is multiplied by 2 so the initial action is that the inverter will inject 20A in this example. So, the fuse on the Ac input will not trip as this 20A will be used 10,1 for the load, and therefore a 9,9 A Burts travels to the input.
So all ok!
In situation 2 the load gets 20A from the inverter (if its able to do so of course) and 10A from the input , So all is fine to.
Therefore, in most cases factor 2.0 is OK. When not ? Well when there is a huge inverter power and the loads tend to be small compared to this.
So if there are 30kVa of inverters but the input setting is 16A or such and the gird isnt very firm voltage wise (long cabling or such) , then at a 20A load the injection will be 32A with so much power behind it that the system voltage will jump quite aggressive. then a lower factor setting might be better as its smoother.
At the case the (startup) load is much higher then average ( like an elevator system) it known that the factor 2.0 results in a current which together with the input current is still too low ( and therefore the AC in will be overloaded) , then a higher setting may be used , like factor 3.0. Then when power assist is started to available power goed up substantial.
in short, boost factor is only active for 0-50ms, after this the power assist is based on its own measurements on ACinput. the 2.0 setting is most of the time perfect, so dont touch it unless you have a situation like described.
Clear for all?