| 209 series | |
|---|---|
 A 209-0 series set on the Keihin–Tōhoku Line approaching Saitama-Shintoshin Station, October 2006 | |
| In service | 1992–present |
| Manufacturer | JR East, Kawasaki Heavy Industries, Tokyu Car Corporation |
| Replaced | KiHa 35, 103 series, 113 series, 211 series |
| Constructed | 1992–2005 |
| Entered service | 7 May 1992 (901/209-900 series) 15 February 1993 (209-0 series) |
| Number built | 1,046 vehicles |
| Number in service | 442 vehicles (as of December 2021[update]) |
| Number preserved | 1 vehicle |
| Successor | E131 series, E233 series |
| Formation | 4/6/8/10 cars per trainset |
| Operators | JR East |
| Depots | Kawagoe, Keiyō, Makuhari, Nakahara, Toyoda |
| Lines served | Chūō Line (Rapid), Hachikō Line, Kashima Line, Kawagoe Line, Keiyō Line, Musashino Line, Narita Line, Ōme Line, Sotobō Line, Sōbu Main Line, Tōgane Line, Uchibō Line |
| Specifications | |
| Car body construction | Stainless steel |
| Car length | 20,000 mm (65 ft 7 in) |
| Width | 2,966 mm (9 ft 8.8 in) (209-500 series) 2.87 m (9 ft 5 in) (other) |
| Doors | 4/6 pairs per side |
| Maximum speed | 110 km/h (68.4 mph) |
| Traction system | Variable frequency (GTO, IGBT) |
| Power output | 1,520 kW (6 motors) |
| Acceleration | 2.5 km/(h⋅s) (1.6 mph/s) 3.3 km/(h⋅s) (2.1 mph/s) (209-1000 series) |
| Deceleration | 4.0 km/(h⋅s) (2.5 mph/s)(service) 4.5 km/(h⋅s) (2.8 mph/s) (emergency) |
| Electric system(s) | 1,500 V DC overhead |
| Current collector(s) | PS28 diamond-shaped pantograph PS21 diamond-shaped pantograph (209-1000 series) PS33A single-arm pantograph (209-500 series) |
| Braking system(s) | Regenerative brake, electronically controlled pneumatic brakes |
| Safety system(s) | ATS-P, ATS-SN, ATC, Digital ATC |
| Track gauge | 1,067 mm (3 ft 6 in) |
The 209 series (209系) is an electric multiple unit (EMU) commuter train type operated by East Japan Railway Company (JR East) in the Tokyo area of Japan since 1993.
The series was introduced in 1992 for experimental operations (as the 901 series) and in 1993 for commercial operations to replace the aging 103 series stock on the Keihin–Tōhoku and Negishi lines. The concept of the 209 series was to create a lower-cost, minimal lifespan train (approximately 15 years) that would be replaced rather than rebuilt when they became life-expired.[1]
The 209 series was the first of the "New series trains" (新系列電車, Shin-keiretsu densha), and served as the basis for the E501, E217, 701, and E127 series rolling stock, as well as the succeeding E231 series stock, which in turn became the blueprint for successive trains developed by JR East and other railway companies in Japan.
- ^ Hughes, Murray (1 October 1999). "We must create our own core competences". Railway Gazette International. Archived from the original on 8 September 2020. Retrieved 18 May 2009.