27.5 kV AC Switchgears.  Single-line diagram 

 Type Description
 Incomer Cubicle  Transformer winding connection with 27.5 kV busbars
 Power Line Connection Cubicle  Power lines connection to 27.5 kV switchgear busbars
 Feeder Cubicle  Traction network feeding line connection with 27.5 kV switchgear main busbar
 Busbar Voltage Transformer Cubicle  Includes instrument voltage transformers providing 27.5 kV switchgear busbars voltage supervision
 Section Switch Cubicle  Busbars sections interconnection at traction substations