Tobu 50000 series
| Tobu 50000 series | |
|---|---|
A lineup of Tojo Line 50070/50090/50000 series trains in March 2008
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| In service | 2005–Present |
| Manufacturer | Hitachi |
| Family name | Hitachi A-train |
| Constructed | 2004–2011 |
| Number built | 390 vehicles (39 sets) (as of April 2012) |
| Formation | 10 cars per trainset |
| Operator(s) | Tobu Railway |
| Depot(s) | Shinrinkōen (50000, 50070, 50090 series) Minami-Kurihashi (50050 series) |
| Line(s) served | Tobu Tojo Line, Tobu Skytree Line, Tobu Isesaki Line, Tokyo Metro Hanzomon Line, Tokyo Metro Yurakucho Line, Tokyo Metro Fukutoshin Line, Tokyu Den-en-toshi Line |
| Specifications | |
| Car body construction | Aluminium |
| Car length | 20,000 mm (65 ft 7 in) |
| Width | 2,800 mm (9 ft 2 in) (2,770 mm (9 ft 1 in) for 50050 series) |
| Doors | 4 pairs per side |
| Maximum speed | 100 km/h (Tobu tracks) 80 km/h (Tokyo Metro lines) 110 km/h (Tokyu Denentoshi Line) |
| Traction system | VVVF |
| Acceleration | 3.3 km/h/s |
| Deceleration | 3.5 km/h/s (service) 4.5 km/h/s (emergency) |
| Electric system(s) | 1,500 V DC |
| Current collection method | Overhead lines |
| Safety system(s) | Tobu ATS, Tokyo Metro CS-ATC (50050 series and 50070 series), Tokyu CS-ATC (50050 series only), Tokyo Metro ATO (50070 series only) |
| Track gauge | 1,067 mm (3 ft 6 in) |
The Tobu 50000 series (東武50000系 Tōbu 50000-kei?) is a commuter electric multiple unit (EMU) train type operated by the private railway operator Tobu Railway in Japan, manufactured by Hitachi to its "A-train" concept. The trains represent the first use of aluminium body cars on Tobu commuter trains. They are also the first Tobu trains to feature bilingual (Japanese and English) automated passenger announcements.
The first 50000 series set, 51001, was delivered in November 2004 and entered service on the Tobu Tojo Line on 16 March 2005, followed by second-batch set 51002 in October 2005. The second set differs in having an emergency door in the front ends, and externally resembles the 50050 series used on the Tobu Skytree Line (see below).
Two more sets, 51003 and 51004, were delivered during fiscal 2009. 50003 was delivered to Shinrinkōen Depot in January 2010, followed by 50004 in February 2010. These two sets have pairs of opening windows and interiors based on sets 51061 onward.
Set 51001 with no front-end doors in July 2008
Set 51002 with front-end doors in May 2006
Set 51002 with modified side windows including opening sections in October 2014
Total number of vehicles built: 90
The 52000, 55000, and 58000 cars each have one single-arm pantograph.
Interior view of set 51001 showing the original seat style in August 2011
Interior view of set 51004 showing newer seat style and conventional handrails at the doorways in March 2010
The priority seat in car 52009 of set 51009 in December 2015
The 10-car 50050 series sets were built for use on the Tobu Isesaki, Skytree and Nikko lines, and inter-running services through the Tokyo Metro Hanzomon Line to the Tokyu Den-en-toshi Line displacing the earlier 30000 series sets.
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