Английская Википедия:Hamburg U-Bahn Type DT4
Шаблон:Short description Шаблон:Refimprove Шаблон:Infobox train
The Type DT4 is a four-car electric multiple unit (EMU) train type operated by the Hamburger Hochbahn AG on the Hamburg U-Bahn system since 1988.
Formation
Every DT4 train consists of four cars, which are formed as two articulated half-sets with two cars each. The cars don't have gangways, but feature windows in the inner car ends.[1]
Interior
The interior consists of transverse seating bays.[1] Widescreen passenger information displays are to be fitted to the whole DT4 fleet, with works scheduled to be completed in 2022.[2]
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Interior view
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Interior with passenger information display in September 2008
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Interior of a refurbished train in August 2015
Technical specifications
The trains have steel car bodies and a three-phase propulsion system.[1] Thyristor inverters are used in the DT4.1 and DT4.2 trains, and the DT4.3 through DT4.5 trains use GTO-pulse inverters.[1] The DT4.56 and DT4.6 trains use IGBT-pulse inverters.[1]
Each four-car set has four powered bogies and two non-motored jacobs bogies. The powered bogies are equipped with water cooled three-phase asynchronous motors.[1]
History
The development of the DT4 began in 1986, and the first unit was completed on May 30, 1988.Шаблон:Cn Passenger service began on October 17 of the same year.Шаблон:Cn
The DT4 trains are being refurbished since 2011.Шаблон:Cn They receive a newer interior appearance, similar to the interior of the DT5 trains. One car of set 140 was refurbished for testing purposes in summer 2010.Шаблон:Cn Regular refurbishment started in 2011.Шаблон:Cn
References
External links
