Keiō 7000 series

Keiō 7000 series
8-car 7000 series set
In service	1984–Present
Number built	190 vehicles
Formation	2/4/6/8/10 cars per trainset
Operator	Keio Corporation
Specifications
Car body construction	Stainless steel
Car length	20 m (65 ft 7 in)
Doors	4 pairs per side
Maximum speed	110 km/h (68 mph)
Acceleration	2.5 km/h/s
Deceleration	4.0 km/h/s (4.5 km/h/s for emergency brake)
Electric system(s)	1,500 V DC
Current collection method	Overhead
Gauge	1,372 mm (4 ft 6 in)

7724, a 10-car set

7710 in pre-2002 color scheme

The Keiō 7000 series (京王7000系) is an electric multiple unit (EMU) commuter train in Japan, which operates on the railway network of Keiō Corporation in the western suburbs of Tokyo.

Technical details

The following are the technical specifications of the trainset cars, including the MT ratio of motor cars to trailer cars (such as 10 cars grouped as 6M4T). The details are:

• Control system
  • Original and 7701–7703: Chopper
  • Refurbished (excluding 7701–7703): IGBT-VVVF
• MT ratio
  • 6M4T (Chopper), 5M5T (VVVF)
  • 5M3T (Chopper), 4M4T (VVVF)
  • 4M2T (Chopper), 3M3T (VVVF)
  • 2M2T (Chopper)
  • 1M1T (Chopper)
• Motor output: 150 kilowatts (200 hp)
• Drive mechanism: Parallel cardan shaft
• Headlights: Sealed beam
• Destination indicators: roller blind

Body

The body is stainless steel. Early sets used corrugated panels, while sets made after 1987 had a beaten style. (Some corrugated-style cars were made after 1987 as middle cars for sets made early in production.) The sides were not painted. Fronts of early sets were the same color as the sides. The front designs are of two types, but the difference is minor.

Driver's cab

The driver's cab contains a "T"-shaped, one-handle master-controller system. The speedometer is analog, providing information up to 140 kilometres per hour (87 mph).

• Acceleration: 4 notch
• Deceleration: 7 notch + emergency

Interior

Seating consists of longitudinal bench seats throughout, arranged 4-7-7-7-4 in intermediate cars. Original sets have no passenger information displays, but refurbished sets feature 3-color LED information displays (four per car).

• 

  Interior of car in original condition

• 

  Inside of a refurbished car

Operations

Used on all Keio Corporation lines.

• On daytime, 10-car sets or 10-car trains of six-car sets coupled to four-car sets are used as Special Express and Semi Special Express trains.
• Eight-car sets or eight-car trains of six-car sets coupled to two-car sets are used mainly as Local or Rapid trains.
• Ten-car trains of eight-car sets coupled to two-car sets are used at rush hours.

History

Set 7713 at Wakabadai Station, 1988

The 7000 series began service in 1984. The 7000 series was built for local train service, and the first sets were five-car sets, rather than 4, 6 or 10 cars, etc. The running performance of the new series was nearly the same as the Keiō 6000 series. By 1996, 190 cars of the 7000 series had been built.

In 2001, the Keiō Corporation began to use 7000 series sets on Special Express, Semi Special Express, Express and Rapid trains. In 2004, changes to the control system for the train were undertaken.

Keiō announced in 2010 that 18 more of its 7000 series cars would be converted to VVVF inverter control.