Retractable catenaries
The rigid retractable catenary system has been specially designed for rail rolling stock maintenance centres in order to provide electrification of internal workshop tracks while still allowing bridge cranes and other aerial installations to be used;
In order to facilitate maintenance operations that require roof access, the retractable catenary must allow:
In the extended position:
Trains to be driven into and out of the buildings under electrical power, the drive motors to be tested, pantograph testing, operations requiring the presence of a contact line under electrical power.
In the retracted position:
Interventions on the tops of trains, at any point, using lifting platforms or mobile bridge cranes throughout the full length of the workshops, … specific interventions such as calibration of the pantograph, elevation of trains using lifting systems for work to be carried out on the underside……
