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In rail transport, head-end power (HEP), also known as electric train supply (ETS), is the electrical power distribution system on a passenger train. The power source, usually a locomotive (or a generator car) at the front or 'head' of a train, provides the electricity used for heating, lighting, electrical and other 'hotel' needs.
The 2 x 25 system traces its roots back in the upgrading of the electrification of the New York, New Haven and Hartford Railroad witch was electrified in 1907 and upgraded in 1914. The line was initially electrified with 11 kV 25 Hz system and then upgraded as "2 x 11 kV" system (but it was never named in this way).
Amtrak Avelia Liberty trainset operating under the 25 Hz traction power system near Claymont, Delaware. Amtrak's 25 Hz traction power system is a traction power network for the southern portion of the Northeast Corridor (NEC), the Keystone Corridor, and several branch lines between New York City and Washington D.C.
Railway electrification is the development of powering trains and locomotives using electricity instead of diesel or steam power.The history of railway electrification dates back to the late 19th century when the first electric tramways were introduced in cities like Berlin, London, and New York City.
This railroad operation its suburban train service with electric service. [19] The 4-track main line ran for 7 miles (11 km) from Westchester Ave. in New York to Mount Vernon, NY. From Mount Vernon the line split into two 2-track lines; one to New Rochelle, NY (2 miles (3.2 km)) and a second to White Plains, NY (9.4 miles (15.1 km)).
For many years the Great Western Railway (GWR) of the United Kingdom often maintained a unique practice when double-heading was required, whereby if an extra locomotive was to be added to the front of a train for a particular section of line the second 'pilot' engine (called an 'assistant engine' in official GWR terminology) would be coupled ...
A catenary pole of the system. Catenary wires and contact wires are tensioned by individual tension balancers. The basic system unit is an elementary electrical section consisting of a segment of one or more parallel tracks, each with a contiguous contact (or catenary or trolley) wire for the locomotive pantograph and an electrically separate feed wire.
A ZQDR-410 traction motor (the large, dark component on the axle with small ventilation holes) A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, or electric multiple unit trains.