Tokyo Metro 9000 series

Tokyo Metro 9000 series
5th-batch set 23 on the Tokyu Meguro Line
In service	1991–Present
Manufacturer	Kawasaki Heavy Industries, Nippon Sharyo, Tokyu Car Corporation
Constructed	1990, 1991–2009, 2021–
Entered service	29 November 1991
Refurbished	2016–2019, 2023–
Number under construction	24 cars
Number built	140 cars (23 sets)
Number in service	140 cars (23 sets)
Formation	6/8 cars per trainset
Fleet numbers	01–23
Capacity	882 passengers (6-car set) 1200 passengers (8-car set)
Operators	Tokyo Metro, previously TRTA
Depots	Ōji
Lines served	N Tokyo Metro Namboku Line SR Saitama Rapid Railway Line MG Tokyu Meguro Line SH Tokyu Shin-Yokohama Line
Specifications
Car body construction	Aluminium
Car length	20,000 mm (65 ft 7 in)
Width	2,830 mm (9 ft 3 in)
Height	4,080 mm (13 ft 5 in) (Batches 1–4) 4,042 mm (13 ft 3.1 in) (Batch 5)
Doors	4 pairs per side
Maximum speed	110 km/h (68 mph)
Weight	25.7–33.5 t (25.3–33.0 long tons; 28.3–36.9 short tons)
Traction system	Batch 1 (A-type): GTO–VVVF (Hitachi or Mitsubishi Electric) Batch 2 (C-type): 3-level IGBT–VVVF (Hitachi) Batch 3 (C-type): IGBT–VVVF (Mitsubishi Electric) Batch 4 (C-type): 2-level IGBT–VVVF (Toshiba) Batch 1 & 2 (B-type refurbishment): SiC-MOSFET–VVVF (Mitsubishi Electric)
Traction motors	3-phase AC induction motor
Power output	190 kW (250 hp) per motor
Transmission	Westinghouse Natal (WN) drive; Gear ratio: 7.79 : 1
Acceleration	3.3 km/(h⋅s) (2.1 mph/s)[1]
Deceleration	3.5 km/(h⋅s) (2.2 mph/s) (service)[1] 4.5 km/(h⋅s) (2.8 mph/s) (emergency)[1]
Electric system(s)	1,500 V DC overhead catenary
Current collector(s)	Pantograph
Bogies	SS-122 / SS-022, SS-135B / SS-035B, 5th batch: FS777A
Braking system(s)	Electronically controlled pneumatic brakes with TRT-11 type regenerative braking
Safety system(s)	CS-ATC, ATO, TASC
Coupling system	Janney coupler
Track gauge	1,067 mm (3 ft 6 in)

The Tokyo Metro 9000 series (東京メトロ9000系, Tōkyō Metoro 9000-kei) is an electric multiple unit (EMU) train type operated by the Tokyo subway operator Tokyo Metro on the Tokyo Metro Namboku Line in Tokyo, Japan, since 1991.