Cables

BlueSol allows you to define and verify all the wiring of the PV system. Each element of the system must be considered connected with a cable coming out, which is connected to the next. The cable connected to the element of the system can be modified by accessing the properties of the element.

The modify of the cable opens a window that has access to all its characteristic data:

Length [m]: total length of the cable. The cable length is a property that the user can edit only if the cable has not been drawn in Layout, in this case the length is calculated automatically by the program according to the path that follows the cable to connect the devices.

The designer can define in the preliminary draft of the approximate lengths that allow an initial verification on the cables. Only at a later stage by inserting the cables in the Layout will be calculated the exact lengths and make any final verifications.

When you insert a cable into the Layout any cable length specified by the user is replaced by the calculated length by the program. At this point, the length can not be changed except by deleting the cable from the Layout.

Cross-section [mm ²]: cross-section of the conductors. For cables in DC are selectable sections for positive, negative and protective earth (PE). For AC cables are selectable sections for phase, neutral and protective earth (PE).
Material: material of construction of the cable conductor.

In the section Electrical data are reported electric parameters:

Nominal voltage [V]: It is the nominal voltage.
Current [A]: It is the operating current of the cable, is obtained from the nominal current of the PV module (declared by the manufacturer) and the combination of the strings in the scheme of system.
Short circuit current [A]: Present in the DC side, is taken as the maximum current that can circulate in the cable.

And the calculated values on the basis of the composition of the system and definition of the cable:

Power dissipation [W]: Describes the power lost for resistance of the cable conductor. Calculated as: Power dissipation = Nominal voltage * Voltage drop * Current. / 100
Voltage drop [%]: Describes the percentage loss of energy, compared to the Nominal voltage applied to the cable, due to the resistance of the conductor of the cable.