Keiō 9000 series

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Please improve this article if you can. (October 2007)

Keiō 9000 series
Set 9706 on the Keiō Line

In service	2001
Number built	Now building
Formation	8, 10
Capacity	141 (top cars), 152 (intermediate cars)
Operator	Keio Corporation
Depots	Takahatafudō and Wakabadai
Specifications
Car length	20 m
Width	2,845
Height	4,100
Maximum speed	110 km/h (on Keiō Corporation lines), 75 km/h (on Toei Shinjuku Line), 120 km/h (designed)
Acceleration	2.5 km/h/s (on Keio Corporation Line), 3.3 km/h/s (on Toei Shinjuku Line)
Deceleration	4.0 km/h/s (4.5 km/h/s for emergency brake)
Traction system	IGBT-VVVF
Power output	170 kW per motor
Gauge	1,372 mm
Voltage	1,500 V DC overhead
Braking system	Electric commanding brake with Regenerative brake
Safety systems	ATS, Digital-ATC (30 series only)

The 9000 series (9000系, 9000-kei^?) is an EMU series operated by Keio Corporation on the Keiō Line and its branches in Tokyo and Kanagawa, Japan.

1 History
2 Technical details
- 2.1 Body
- 2.2 Driver's cab
3 Lines of operation
- 3.1 0 series
- 3.2 30 series

[edit] History

The first set of the 9000 series started to service in January 2001. The original model, called 0 series, was built in the format of 8-cars x 8 sets (9701F to 9708F). Although the 9000 series was designed to run on the Toei Shinjuku Line (through service from the Keiō Line), in those days, the ATC system of the Toei Shinjuku Line did not accept VVVF control system that the 9000 series employed so that 0 series was built without equipment needed on the Toei Shinjuku Line.

Built in fiscal 2000 - 9701F, 9702F
Built in fiscal 2001 - 9703F, 9704F, 9705F
Built in fiscal 2002 - 9006F
Built in fiscal 2003 - 9007F
Built in fiscal 2004 - 9008F

(Note: A fiscal year is from April 1 that year to March 31 next year.)

In May 2005, ATC system of Toei Shinjuku Line was changed to new system which accept VVVF control system. However, instead of modifying the existing cars, a new version with Shinjuku Line equipment, called the 30 series (9030 series), was introduced in 10-car formation. Building of the 30 series is ongoing as of 2008.

Built in fiscal 2005 - 9731F, 9032F
Built in fiscal 2006 - 9733F, 9034F, 9035F
Built in fiscal 2007 - 9736F, 9037F, 9038F
Built in fiscal 2008 - 9739F, 9040F (as of May 2008)

[edit] Technical details

MT ratio
- 0 series: 4M4T (4 motor cars and 4 trailers, motor cars have 4 motors)
- 30 series: 5M5T
Gear ratio: 6.07
Drive mechanism: Parallel cardan
Headlights: Sealed beam
Destination indicators:
- 0 series: 3-color LED
- 30 series: Full-color LED
Passenger information displays:
- 0 series: 3-color LED (4 per car)
- 30 series (first 5 sets): 3-color LED (4 per car)
- 30 series (9036F and later): Full-color LCD (8 per car)
Seating arrangement (intermediate cars): 4-7-7-7-4, all longitudinal
Car length: 20 m
Doors per side: 4

[edit] Body

9732F

Inside of 9030 series

The front end design is based on the design of the former 5000 series. The body is stainless steel and manufactured with the Nippon Sharyo's unique "block structure" system (日車式ブロック工法). Some sets were built at Tokyu Car Corporation, but body structures are the same as the Nippon Sharyo-made sets. The front portion is steel paited in ivory white.

[edit] Driver's cab

The master controller is one-handle type with a T-shape handle. Speed meter is analog and can indicate up to 140km/h. A train navigation system (TNS) is installed.

Acceleration: 4 notches
Deceleration: 7 notches + emergency

[edit] Lines of operation

[edit] 0 series

Although it can be used on all 1,372 mm gauge lines of Keiō, it is mainly used on the Keiō Line, the Takao Line and the Sagamihara Line.

On day time, it is mainly used on Local and Rapid services. It is also used on Semi Special Express service with 10-car format. When it organizes 10-car sets, two cars of 6000 series are coupled.

[edit] 30 series

The main usage of 30 series sets is the through express service on the Keiō Line, the Sagamihara Line and the Toei Shinjuku Line. It is rarely used on the section west of Chōfu Station on the Keiō Line.