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
Constructed1985–1996
Refurbished2003–2013
Number built84 vehicles (21 sets)
Formation4 cars per trainset
Capacity144 passengers per car (58 seating, 54 post-refurbishment)
OperatorsSendai City Transportation Bureau
Lines servedSendai Subway Namboku Line
Specifications
Car length
  • 21,750 mm (71 ft 4 in) (end cars)
  • 20,000 mm (65 ft 7 in) (intermediate cars)
Width2,890 mm (9 ft 6 in)
Height4,040 mm (13 ft 3 in)
Doors4 pairs per side
Maximum speed75 km/h (47 mph)
Weight128.0 t (126.0 long tons; 141.1 short tons)
Traction system
Traction motors
Power output160 kW (215 hp) per motor
TransmissionWestinghouse-Natal drive; gear ratio: 5.73 : 1 (86 / 15)
Acceleration
  • 3.0 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 (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

History

First entering service in 1987,[4] the fleet of 21 sets was constructed between 1985 and 1996.[5]

Refurbishment

From 2003 until 2013, the 1000 series trains underwent mid-life refurbishment to extend their lifespan.[6] Refurbished sets are renamed 1000N series, with the first such set returning to service in March 2004.[5]

The refurbished trains include the following features.

Replacement

The 1000N series sets are scheduled to be replaced with new 3000 series trains from 2024.[6]

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. 仙台市地下鉄南北線、新型車両は無塗装のアルミ合金製になる? - 鉄道ニュース週報(208) [Will the new trains on the Sendai Subway Namboku Line be made of unpainted aluminium?]. Mynavi News (in Japanese). 18 January 2020. Retrieved 29 October 2023.
  5. 全国の地下鉄 仙台市交通局(仙台市営地下绣) [Subways Nationwide: Sendai Municipal Subway]. Japan Railfan Magazine (in Japanese). Vol. 48, no. 562. Japan: Koyusha Co., Ltd. February 2008. pp. 12–13.
  6. 仙台市地下鉄南北線 新型車両3000系を公開、走行試験へ - 写真73枚 [Sendai Municipal Subway Namboku Line's new 3000 series shown off - 73 photos]. Mynavi News (in Japanese). 27 October 2023. Retrieved 29 October 2023.
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