Railway Electrification System
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. Building their wires and other infrastructure is expensive, however.
Power supply
Electricity may be sent to the train in different ways. Different countries use different systems. The most widely used systems are:
- Alternating current from overhead lines at 15,000 volts, 16.7 Hz
- Alternating current from overhead lines at 25,000 volts, 50 Hz
- Direct current from overhead lines at 1,500 or 3,000 volts
- Direct current from a third rail at 600 or 750 volts
Related pages
This article uses material from the Wikipedia Simple English article Railway electrification system, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). Content is available under CC BY-SA 4.0 unless otherwise noted. Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki Simple English (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.