Thank you André, so if I understand right it would be really helpful to confirm the following:
What do you mean with "The wire between HV transfo and Injection is indeed not taken into account (this is a weakness of PVsyst)" I understand if I enter the losses for the High Voltage line inputs they are taken into account right?
I am still not sure how to manage the losses for different MV circuits in parallel with a number of MV transfos in series each.
Taking a look to the Help you mention:
In the last line, it mentions defining an average lenght, so considering my input are the power losses, I should define an average loss for each transfo and mantain the total number of transfos of the system. Is this right?
As an example, if I have two parallel circuits with 3 transfos in series each, and the total power loss of both circuits is 0,6% I should enter and average loss of 0,1% for each transfo, right?
Thank you very much.