209 series
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| 209 series | |
 A 209 series train on the Keihin-Tōhoku Line between Saitama-Shintoshin and Ōmiya stations |
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| Initial acceleration | 2.5 km/h/s or 3.3 km/h/s |
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| Top speed (service) | 110 km/h |
| Top speed (design) | 110 km/h |
| Gauge | 1067 mm |
| Voltage | 1500 V DC |
| Braking systems | Regenerative brake, Electric commanding brake |
| Safety systems | ATS-P, ATS-SN, ATC, Digital ATC |
The 209 series is a commuter EMU used by East Japan Railway Company on railway lines in the Tokyo area.
The series was introduced in 1993 to replace the aging 103 series stock on the Keihin-Tōhoku and Negishi lines. The concept of the 209 series was to create a low-cost, minimal lifespan train (approximately 15 years) that would be replaced rather than rebuilt when they became life-expired.
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 E231 series stock, which in turn became the blueprint for successive trains developed by JR East and other railway companies in Japan.
In 2006, JR East has announced that the 209 series trains on the Keihin-Tōhoku/Negishi lines will be replaced by new E233 series trains from autumn 2007.
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[edit] Variants
[edit] 209-0 Sub-series
The original full-production version introduced on both the Keihin-Tōhoku (10-car sets) and Nambu (6-car sets) lines in 1993. 6-door SaHa208 cars were inserted into the Keihin-Tōhoku Line sets in 1995.
[edit] 209-500 Sub-series
This sub-series represented a stop-gap for use from 1998 on the Chūō-Sōbu Line until the full-production E231 series trains were delivered. The 17 10-car sets differ noticeably from the other 209 series variants in having 2950 mm wide cars (compared to 29870 mm for earlier flat-sided stock). While externally similar in appearance to the later E231 series sets, the 209-500 series are distinguishable by their white cab fronts, lozenge-style pantographs, and lack of 6-door cars.
[edit] 209-900/910/920 Sub-series
Three 10-car 209-900 series prototypes were built in 1992 for testing and passenger evaluation on the Keihin-Tōhoku Line. Initially clasified as 901 series, the three sets were subsequently reclassified as 209-900 series (set A, built by Kawasaki Heavy Industries), 209-910 series (set B, built by Tokyu Car Corporation), and 209-920 series (set C, built by Kawasaki Heavy Industries). The three sets incorporated a number of different design features for evaluation, but were subsequently converted to bring them in line with the full-production specifications. They differ from the full-production 209-0 series sets in not having 6-door SaHa208 cars.
209-910 series set 91 was placed in storage at Omiya Works from December 2006.
[edit] 209-950 Sub-series
This was the original classification given to the prototype E231 series 10-car set delivered in October 1998. It was reclassified as E231-900 series in June 2000 following conversion to the full-production E231 standard.
[edit] 209-1000 Sub-series
Two 10-car sets entered service in December 1999 on Jōban Line and Tokyo Metro Chiyoda Line inter-running services. Based on the 209-0 sub-series, these trains have end doors for use in emergencies inside tunnels. These sets are based at JR East's Matsudo depot.
[edit] 209-3000 Sub-series
Four 4-car sets were introduced in 1996 for use on the Kawagoe Line and newly-electrified southern section of the Hachiko Line. These sets (numbers 61 to 64) are based at JR East's Kawagoe depot. While visually similar to the original 209-0 sub-series, these sets differ in having passenger-operated door controls.
[edit] 209-3100 Sub-series
This sub-series of two 4-car sets was introduced in 2005 as part of the scheme to eliminate 103 series sets from the Kawagoe Line and Hachiko Line. Set number 71 consists of two former Tokyo Waterfront Area Rapid Transit 70-000 series control cars with two newly-manufacturered intermediate cars, while set number 72 consists entirely of former 70-000 series cars. The 70-000 series cars had become surplus when 6-car sets had been reformed into 10-car sets in 2004. Like the 209-3000 series, these sets have passenger-operated door controls.
[edit] Lines on which 209 series trains operate
- Keihin-Tōhoku Line/Negishi Line: 10-car 209-0 series (x78), 209-500 series, and 209-900 series (x3) sets (from 1993)
- Nambu Line: 6-car 209-0 series sets (x2) (from 1993)
- Hachiko Line/Kawagoe Line: 4-car 209-3000 series (x4) and 209-3100 series (x2) sets (from 1996)
- Chūō-Sōbu Line: 10-car 209-500 series sets (from 1998)
- Jōban Line: 10-car 209-1000 series sets (x2) (from 1999)
[edit] See also
- 103 series
- 205 series
- 217 series
- E231 series
- E233 series
- E501 series
