Open main menu

Railway electrification system

electric power to railway trains and trams without an on-board prime mover or local fuel supply
Electric locomotives under the wires in Sweden
Dual electrification; both overhead wire and third rail for different trains

A railway electrification system supplies electrical energy to railway locomotives and multiple units so that they can operate without having an on-board prime mover. Their main advantages are high energy efficiency and low operating cost. They are expensive to build, however.

Power supplyEdit

Electricity may be sent to the train in different ways. Different countries use different systems. The most widely used systems are:

Related pagesEdit