A railway electrification system supplies electrical energy to railway locomotives and multiple units as well as trams so that they can operate without having an on-board prime mover. Railway electrification has many advantages over alternative forms of traction, but it requires significant capital expenditure for installation. In this article "system" refers to the technical configuration and details adopted; "network" refers to the geographical extent of a system actually installed at a location.
Read more about Railway Electrification System: Characteristics of Railway Electrification, Classification, Direct Current, Alternating Current, World Electrification, Non-contact Systems, Research and Development
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