Sendai Subway 1000 series
Japanese train type
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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 service | 1987–present |
| Manufacturer | Kawasaki |
| Constructed | 1985–1996 |
| Refurbished | 2003–2013 |
| Number built | 84 vehicles (21 sets) |
| Formation | 4 cars per trainset |
| Capacity | 144 passengers per car (58 seating, 54 post-refurbishment) |
| Operator | Sendai City Transportation Bureau |
| Line served | Sendai Subway Namboku Line |
| Specifications | |
| Car length |
|
| Width | 2,890 mm (9 ft 6 in) |
| Height | 4,040 mm (13 ft 3 in) |
| Doors | 4 pairs per side |
| Maximum speed | 75 km/h (47 mph) |
| Weight | 128.0 t (126.0 long tons; 141.1 short tons) |
| Traction system | |
| Traction motors |
|
| Power output | 160 kW (215 hp) per motor |
| Transmission | Westinghouse-Natal drive; gear ratio: 5.73 : 1 (86 / 15) |
| Acceleration |
|
| Deceleration |
|
| Electric systems | 1,500 V DC (overhead catenary) |
| Current collection | Pantograph |
| Bogies | SS-005, SS-105 |
| Braking system | Electromagnetic braking |
| Safety system | ATC/ATO (Fuzzy logic) |
| Track gauge | 1,067 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.
- LED destination indicators at the train ends
- Space for wheelchairs
- Air-conditioning
- LED destination indicators inside trains
Replacement
The 1000N series sets are scheduled to be replaced with new 3000 series trains from 2024.[6]