3.1.2. Electrical Characteristics

The line is 3 kV d.c. electrified, according to CEI EN 50163. The contact line consists of two copper contact wires, each with a diameter of 11.8 mm and a section of 150 mm2. They are supported by two carrying ropes in copper stranded with 19 wires each with a diameter of 2.8 mm and a section of 120 mm<sup>2</sup> and is standardized according to CEI EN 50119, CEI EN 50122-1, CEI EN 50122-2, and CEI EN 50149. Each substation, regulated according to CEI EN 50388, is equipped with two conversion units of 5.4 MW and a value of 0.13 Ω per unit has been set for the internal resistance. The characteristics and location of the substations are shown in the Table 5.

**Table 5.** Substations on the line.

