System parameters

[Bakhtiyar]

Why sometimes my SLD doesn't light up even though there are no errors in the system?

[Linda Thoren]

For certain scenarios it is not yet implemented, such as for multi orientation daily sharing. In the case in your print screen it is probably because you do not have a multiple between the number of strings and MPPTs in the second sub-array. You should have an orange warning in that sub-array indicating this. 

You should here create an additional sub-array for the strings of 19 modules, one sub-array with 2 strings and 1 MPPT and a second with 1 string and 1 MPPT.

This is further explained in the following youtube video:

 

[Bakhtiyar]

Now how can I enter the length and cross-section of the cable for each string? I can't enter values here, the cell is not lit.

[Bakhtiyar]

Dear PVsyst team!

Please tell me how to calculate losses in DC and AC cables ?

[Linda Thoren]

Hello,

In the current version you cannot do these manipulations directly in the single line diagram. In the following youtube tutorial you find more information about the single line diagram and the DC and AC cables :

The losses in the DC and AC cables can be defined in the detailed losses window as discussed in the following forum posts: