TX-2000 series

TX-2000 series
Tsukuba Express 2000 series
Manufacturer	Hitachi
Built at	Kudamatsu, Yamaguchi
Family name	Hitachi A-train
Constructed	2003–2012
Entered service	24 August 2005
Number built	138 vehicles (23 sets)
Number in service	138 vehicles (23 sets)
Formation	6 cars per trainset
Fleet numbers	51–73
Capacity	920 (318 seated)
Operators	Metropolitan Intercity Railway Company
Depots	Moriya
Lines served	Tsukuba Express
Specifications
Car body construction	Aluminium
Car length	20,800 mm (68 ft 3 in) (end cars) 20,000 mm (65 ft 7 in) (intermediate cars)
Width	2,950 mm (9 ft 8 in)
Height	4,070 mm (13 ft 4 in)
Doors	4 pairs per side
Maximum speed	130 km/h (81 mph)
Traction system	PWM-VVVF
Power output	190 kW per motor
Acceleration	3.0 km/(h⋅s) (1.9 mph/s)
Deceleration	4.2 km/(h⋅s) (2.6 mph/s) (service) 4.4 km/(h⋅s) (2.7 mph/s) (emergency)
Electric system(s)	1,500 V DC / 20 kV 50 Hz AC (overhead wire)
Current collector(s)	Pantograph
Safety system(s)	ATC, ATO
Track gauge	1,067 mm (3 ft 6 in)

The TX-2000 series (TX-2000系) is a dual-voltage electric multiple unit (EMU) train type operated by the Metropolitan Intercity Railway Company on the Tsukuba Express line in the Kanto region of Japan since 2005.^[1]

TX-2000 series trains are capable of operating on both the 1,500 V DC and 20 kV AC sections of the Tsukuba Express, and therefore operate over the full length of the line. (The DC-only TX-1000 series sets are restricted to the Akihabara – Moriya section of the line.)^[2]

As of 1 April 2016^[update], the fleet consists of 23 six-car sets (51 to 73), consisting of four motored (M) cars and two trailer (T) cars, and formed as follows with car 1 at the Tsukuba (northern) end.^[2]

Cars 2 and 4 are each fitted with two single-arm pantographs.^[2]

Passenger accommodation primarily consists of longitudinal bench seating.^[3] The middle two cars, 3 and 4, were built with transverse seating bays with folding tables,^[2] but from April 2017, the transverse seating was gradually replaced by longitudinal bench seating.^[4]

• 
  Interior view (longitudinal seating)
• 
  Priority seating
• 
  Priority seating with wheelchair space at right
• 
  Interior view showing transverse seating
• 
  Folding table fitted to transverse seating bays

The first six-car prototype was built in March 2003, and 15 more sets were subsequently delivered from Hitachi between January and July 2004, entering service on 24 August 2005.^[2] Four additional sets (67 to 70) were delivered in 2008 to provide increased capacity. These later sets differ in having a red bodyline stripe added below the windows.^[2]

A further three six-car sets were delivered in June and August 2012 to provide additional capacity.^[2][5] These three sets, 71 to 73, feature a number of design improvements over earlier sets, including the use of LED interior lighting, increased seat thickness, and opening windows to provide ventilation at the ends of cars.^[6]

• 
  Late-build set 72 in May 2023

Wikimedia Commons has media related to TX-2000 series.

• Tsukuba Express TX-2000 information (in Japanese)