Head-end power

A tightlock coupling on a British Rail Class 321. Note the large rectangular multi-connector below the coupling, which automatically connects head-end-power and control lines.

Connection cables between two China Railways 25T coaches

CAF DVT with twin HEP generator sets at Colbert Station, Limerick, Ireland in 2006

In rail transport, head-end power (HEP) or electric train supply (ETS) is the electrical power distribution system on a passenger train. The power source, usually a locomotive at the front or 'head' of a train (or a generator car), provides the electricity used for lighting, electrical and other 'hotel' needs. The maritime equivalent is hotel electric power. A successful attempt by the London, Brighton and South Coast Railway in October 1881 to light the passenger car between London and Brighton heralded the beginning of using electricity to light trains in the world.

单词	Generator car
释义	Generator car 英语百科 Head-end power In rail transport, head-end power (HEP) or electric train supply (ETS) is the electrical power distribution system on a passenger train. The power source, usually a locomotive at the front or 'head' of a train (or a generator car), provides the electricity used for lighting, electrical and other 'hotel' needs. The maritime equivalent is hotel electric power. A successful attempt by the London, Brighton and South Coast Railway in October 1881 to light the passenger car between London and Brighton heralded the beginning of using electricity to light trains in the world.
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Generator car

Head-end power