Tōbu 9000 series
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| Tōbu 9000 series | |
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 First refurbished set, 9102, on test, April 2007 |
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| In service | 1981 - Present |
| Manufacturer | Tokyu Car, Fuji HI, Alna Koki |
| Refurbishment | 2007 - 2008 |
| Number built | 100 vehicles (10 sets) |
| Formation | 10 cars per trainset |
| Operator | Tōbu Railway |
| Depots | Shinrinkōen |
| Lines served | Tōbu Tōjō Main Line, Tokyo Metro Yūrakuchō Line, Tokyo Metro Fukutoshin Line (from June 2008) |
| Specifications | |
| Car body | Stainless steel |
| Car length | 20 m |
| Maximum speed | 100 km/h |
| Gauge | 1,067 mm |
| Voltage | 1,500 V DC overhead |
The 9000 series is a commuter EMU operated by Tōbu Railway in Japan.
First entering service in 1981 on the Tōbu Tōjō Main Line, this was the first stainless steel EMU type to be introduced by Tōbu. A total of ten 10-car sets were ultimately built for use on through-running services over the Tokyo Metro Yūrakuchō Line.
The trains are also used on Tōjō Main Line services between Ikebukuro and Ogawamachi, and from June 2008, will also be used on through-running services over the Tokyo Metro Fukutoshin Line.
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[edit] Variants
[edit] Prototype set 9101
Built in October 1981, this was the first stainless steel EMU type to be introduced by Tōbu, and featured a bodyline stripe using the same "Royal maroon" colour as previously used on Tōbu 1720 series "DRC" trains. The seats on this set were originally brown, but this was later changed to the standard light green colour.
[edit] Production sets 9102-9108
Sets 9102 to 9107 were built in 1987, incorporating a number of minor improvements over the prototype set. Seat width was increased from 425 m to 450 mm.
An additional set, 9108, was built in 1991, based on the 10030 series lightweight body style.
[edit] 9050 series VVVF sets
Two 9050 series sets were introduced in December 1994. These incorporated further design improvements and changes similar to the 20050 series trains, notably VVVF control, bolsterless bogies, LED destination indicators, LCD interior passenger information displays, and brown seat moquette. The passenger information displays were, however, removed in 1999.
[edit] Refurbishment
From April 2007 to 2008, all of the 9000 series sets except prototype set 9101 underwent refurbishment ahead of introduction on Tokyo Metro Fukutoshin Line inter-running services from June 2008. Refurbishment included totally new interiors and cabs based on the 50070 series design. Externally, single-arm pantographs were fitted, and the destination indicator blinds replaced with full-colour LED displays. Prototype set 9101 was not refurbished due to the different door spacing of this set, making it incompatible with the platform doors on the Fukutoshin Line.[1]
[edit] References
- Tetsudō Daiya Jōhō Magazine, March 2006 issue, p27-30
- ^ Tetsudō Daiya Jōhō Magazine, June 2007 issue, p75
