SYTRAL

Replacement operation carried out on the 24 metro stations that must remain open to users and not hinder the operation of the network.
Replacement of 24 main low voltage switchboards (6 main low voltage switchboards per year) installed during the construction of the metro in 1975. They supply 24 metro stations on lines A, B and C. 
Each metro station is equipped with a main low voltage switchboard that supplies the entire station with electrical energy (lighting, escalators, video, etc.).