British electric multiple units | 台北市立動物園資訊網

Anelectricmultipleunit(EMU)isanelectrictraincapableofoperatinginmultiplewithotherEMUsthatdoesnothaveaseparatelocomotive,typicallypassenger ...

British self-powered electric trains

An electric multiple unit (EMU) is an electric self-powered train, capable of operating in multiple with other EMUs and without the need for a locomotive; these are typically passenger trains with accommodation in every vehicle and a driving position at each end. The term can also be used to describe a train that is a permanent formation with a non-driving power car, such as the Advanced Passenger Train.[note 1] As of December 2010[update], two-thirds of the passenger carriages in Great Britain are formed in EMUs.

Electric railways began in Great Britain in 1883 and the first EMU ran on the Liverpool Overhead Railway in 1893. In the early 20th century, systems were developed where all the motors on a train could be controlled by a low voltage signal from any cab. Due to problems using steam locomotives underground, the underground railways in London and Liverpool were early adopters of 600 V DC ele...