731 series

The 731 series (731系) is an AC electric multiple unit (EMU) train type operated by Hokkaido Railway Company (JR Hokkaido) on Sapporo area suburban services in Hokkaido, Japan since 1996.[2]

731 series
731 series set G116 in August 2009
ManufacturerKawasaki Heavy Industries, Hitachi[1]
Replaced711 series
Constructed1996–2006
Entered service24 December 1996
Number built63 vehicles (21 sets)
Number in service63 vehicles (21 sets)
Formation3 cars per trainset
Fleet numbersG-101–121
Operator(s)JR Hokkaido
Depot(s)Sapporo
Line(s) servedHakodate Main Line, Chitose Line
Specifications
Car body constructionStainless steel
Car length21.67 m (71 ft 1 in) (end cars)
21.3 m (69 ft 11 in) (intermediate cars)
Width2,800 mm (9 ft 2 in)
Height3,620 mm (11 ft 11 in)
Doors3 per side
Maximum speed130 km/h (81 mph)
Electric system(s)20 kV AC (50 Hz) overhead line
Current collector(s)Pantograph
Multiple working721 series, 733 series, 735 series, KiHa 201 series
Track gauge1,067 mm (3 ft 6 in)

Formation

As of 1 October 2016, 21 three-car sets are in service, numbered G-101 to G121, and based at Sapporo Depot. The trainsets are formed as follows, with one motored intermediate car and two non-powered driving trailer cars.[3]

Car No. 123
Designation Tc'MTc
Numbering KuHa 731-100MoHa 731-100KuHa 731-200
Capacity
(total/seated)		 141/50151/52143/50

Car 2 is fitted with one N-PS785 single-arm pantograph.[3]

Interior

Seating consists of longitudinal bench seating throughout, without the vestibule areas used on the earlier 721 series trains.[2]

  • Interior view in February 2010
    Interior view in February 2010

History
KiHa 201 series DMU running in multiple with a 731 series EMU, January 2009

A total of 63 vehicles (21 sets) were delivered to Sapporo Depot between 1996 and 2006. The first units entered service from 24 December 1996.[4]

From the start of 22 March 1997 timetable revision, 731 series EMUs were operated in multiple with KiHa 201 series DMU sets over certain routes.[4]

Polycarbonate window protectors were added in 2002, and the original pantographs were replaced with single-arm pantographs between 2004 and 2005.[4]

Fleet history

The individual build histories of the fleet are as follows.[3][1][5][6]

Set No.ManufacturerDelivery date
G-101Kawasaki Heavy Industries12 December 1996
G-10210 December 1996
G-103Hitachi13 December 1996
G-10414 December 1996
G-105 Kawasaki Heavy Industries23 February 1998
G-10624 February 1998
G-107
G-10822 March 1998
G-10923 March 1998
G-11024 March 1998
G-11116 December 1998
G-11217 December 1998
G-113Hitachi18 December 1998
G-11419 December 1998
G-115Kawasaki Heavy Industries20 December 1999[7]
G-116
G-11721 December 1999[7]
G-118Hitachi13 December 1999[7]
G-119
G-120Kawasaki Heavy Industries6 March 2006[8]
G-1215 March 2006[8]

References
Wikimedia Commons has media related to JR Hokkaido 731.
  1. JR車両のデータ・バンク 96/97 [JR rolling stock databank - 96/97]. Japan Railfan Magazine (in Japanese). Vol. 37, no. 435. Japan: Koyusha Co., Ltd. July 1997.
  2. Jēāru zensharyō handobukku: Rail Magazine 2009 JR全車輌ハンドブック2009 [JR Rolling Stock Handbook 2009]. Japan: Neko Publishing. 2009. ISBN 978-4-7770-0836-0.
  3. Jr電車編成表 JR電車編成表 2017冬 [JR EMU Formations - Winter 2017] (in Japanese). Japan: Kotsu Shimbunsha. 16 November 2016. p. 7. ISBN 978-4-330-73716-4.
  4. JR電車編成表 2010夏 [JR EMU Formations - Summer 2010]. Japan: JRR. May 2010. p. 2. ISBN 978-4-330-14310-1.
  5. JR車両のデータ・バンク 97/98 [JR rolling stock databank - 97/98]. Japan Railfan Magazine (in Japanese). Vol. 38, no. 447. Japan: Koyusha Co., Ltd. July 1998.
  6. JR車両のデータ・バンク 98/99 [JR rolling stock databank - 98/99]. Japan Railfan Magazine (in Japanese). Vol. 39, no. 459. Japan: Koyusha Co., Ltd. July 1999.
  7. JR車両のデータ・バンク 1999/2000 [JR rolling stock databank - 1999/2000]. Japan Railfan Magazine (in Japanese). Vol. 40, no. 471. Japan: Koyusha Co., Ltd. July 2000.
  8. JR車両のデータ・バンク 2005/2006 [JR rolling stock databank - 2005/2006]. Japan Railfan Magazine (in Japanese). Vol. 46, no. 543. Japan: Koyusha Co., Ltd. July 2006.
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