Osaka Municipal Subway New 20 series

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Osaka Municipal Subway New 20 series
Osaka Subway 20 series Midorigi Depot Open Day 20161127.jpg
A line-up of the five different 20 series variants at Midorigi Depot in November 2016
In service 1990–present
Manufacturer Alna Kōki, Hitachi, Kawasaki Heavy Industries, Kinki Sharyo, Nippon Sharyo, Tokyu Car Corporation
Replaced 30 series
Constructed 1990–1998
Refurbishment 2011–
Number built 572 vehicles
Number in service 572 vehicles
Formation 10 cars per trainset (21 series)
6 cars per trainset (22/23/24/OTS series)
4 cars per trainset (25 series)
Operator(s) Osaka Municipal Subway
Depot(s) Nakamozu (21 series)
Dainichi (22 series)
Midorigi (23 series)
Morinomiya (24/25/OTS series)
Line(s) served
Specifications
Car body construction Stainless steel
Train length 187,400 mm (614.8 ft) (21 series)
112,600 mm (369.4 ft) (22/23/24/OTS series)
75,200 mm (246.7 ft) (25 series)
Car length 18,900 mm (62 ft 0 in) (end cars)
18,700 mm (61 ft 4 in) (intermediate cars)
Width 2,890 mm (9 ft 6 in) (end cars)
2,880 mm (9 ft 5 in) (intermediate cars)
Height 3,745 mm (12 ft 3 in)
Doors 4 pairs of sliding doors per side
Maximum speed 95 km/h (60 mph) (24 series)
70 km/h (45 mph) (other series)
Traction system Variable-frequency
Traction motors Four 140 kW (190 hp) traction motors per motor car
Power output 560 kW (750 hp) per motor car
Acceleration 3.0 km/h/s (21/24 series)
2.5 km/h/s (other series)
Deceleration 3.5 km/h/s (4.5 km/h/s emergency)
Electric system(s) 750 V DC
Current collection method Third rail contact shoes
Braking system(s) Electric commanding brake with regenerative brake
Safety system(s) WS-ATC (21/22/23/24/OTS series)
WS-ATC, CS-ATC, ATO (25 series)
Track gauge 1,435 mm (4 ft 8 12 in)

The Osaka Municipal Subway New 20 series (大阪市交通局新20系?) is a rapid transit electric multiple unit (EMU) train type operated by Osaka Municipal Subway in Japan since 1990.

Variants[edit]

  •      21 series: 10-car sets used on the Midōsuji Line
  •      22 series: 6-car sets used on the Tanimachi Line
  •      23 series: 6-car sets used on the Yotsubashi Line
  •      24 series: 6-car sets used on the Chūō Line
  •      25 series: 4-car sets used on the Sennichimae Line
  •      OTS series (OTS系): 6-car sets introduced in 1997 on the opening of the Cosmosquare to Osakakō segment of the Chūō Line and owned by Osaka Port Transport System (OTS), transferred to Tanimachi Line in 2006 and rechristened as 22-50 series

Formation[edit]

Trains are formed as follows.[1]

21 series[edit]

Car No. 1 2 3 4 5 6 7 8 9 10
Designation Tec2 Ma2 Mb2 T T' Ma1' Tbp Mb1 Ma1 Tec1
Numbering 219xx 212xx 213xx 215xx 218xx 214xx 217xx 211xx 210xx 216xx

Car 6 is designated as a women-only car.

22/23/24/OTS series[edit]

Car No. 1 2 3 4 5 6
Designation Tec1 Mb1' T' Mb2 Ma2 Tec2
Numbering 2600 2100 2800 2300 2200 2900

25 series[edit]

Car No. 1 2 3 4
Designation Tec1 Mb1' Mb2 Tec2
Numbering 256xx 251xx 253xx 259xx

References[edit]

  1. ^ 私鉄車両編成表 2016 [Private Railway Rolling Stock Formations - 2016] (in Japanese). Japan: Kotsu Shimbunsha. 25 July 2016. pp. 154–156. ISBN 978-4-330-70116-5.