Sendai Subway 1000 series

The Sendai Subway 1000N series (仙台市交通局1000N系電車) is a rapid transit electric multiple unit (EMU) train type operated on the Sendai Subway Namboku Line in Sendai, Japan.

Sendai Subway 1000N series
A Sendai Subway 1000N series train, October 2008
Interior
In service1987–present
ManufacturerKawasaki
Constructed1985–2007
Refurbished2004–2013
Number built84 vehicles (21 sets)
Formation4 cars per trainset
Capacity144 passengers per car (58 seating, 54 post-refurbishment)
Operator(s)Sendai City Transportation Bureau
Line(s) servedSendai Subway Namboku Line
Specifications
Car length
  • 21.75 m (71 ft 4 in) (end cars)
  • 20 m (65 ft 7 in) (intermediate cars)
Width2.89 m (9 ft 6 in)
Height4.04 m (13 ft 3 in)
Doors4 pairs per side
Maximum speed75 km/h (46.6 mph)
Weight128 t (126.0 long tons; 141.1 short tons)
Traction system
Traction motors
  • 160 kW (215 hp) series-wound DC (as built)
  • 160 kW (215 hp) asynchronous 3-phase AC (post-refurbishment)
TransmissionWestinghouse-Natal drive; gear ratio: 5.73 : 1 (86 / 15)
Acceleration
  • 3 km/(h⋅s) (1.9 mph/s) (as built)
  • 3.5 km/(h⋅s) (2.2 mph/s) (post-refurbishment)
Deceleration
  • 3.7 km/(h⋅s) (2.3 mph/s) (service)
  • 4.5 km/(h⋅s) (2.8 mph/s) (emergency)
Electric system(s)1,500 V DC (nominal) from overhead catenary
Current collector(s)Pantograph
BogiesSS-005, SS-105
Braking system(s)Electromagnetic braking
Safety system(s)ATC/ATO (Fuzzy logic)
Track gauge1,067 mm (3 ft 6 in)

The 1000 series was the world's first train type to use fuzzy logic to control its speed, and this system developed by Hitachi[1] accounts for the relative smoothness of the starts and stops when compared to other trains, and is 10% more energy efficient than human-controlled acceleration.[2] It was the recipient of the 28th Laurel Prize award presented by the Japan Railfan Club.

Formation

Sets are formed as follows, with car 1 at the Tomizawa end.[3]

Car No. 1 2 3 4
Designation Tc1 M1 M2 Tc2
Numbering 1100 1200 1300 1600

Refurbishment

From 2004 until 2013, the 1000 series trains underwent mid-life refurbishment to extend their lifespan. As of April 2009, 12 sets have been refurbished,[4] and the refurbished sets are renamed 1000N series.

The refurbished trains include the following features.

See also

References
  1. Andrew Pollack (2 April 1989). "Fuzzy Computer Theory: How to Mimic the Mind?". The New York Times. Retrieved 11 March 2011.
  2. Philip Elmer-DeWitt (25 September 1989). "Time For Some Fuzzy Thinking". Time. Archived from the original on 22 October 2010. Retrieved 11 March 2011.
  3. 私鉄車両編成表2021 [Private Railway Vehicle Organization Table 2021] (in Japanese). Japan: Kotsu Shimbunsha. 2021. p. 12. ISBN 9784330032214.
  4. 資 料 ２【車両デザインガイドラインについて】 (PDF). www.city.sendai.jp (in Japanese). Archived from the original (PDF) on 18 July 2011. Retrieved 11 March 2011.
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