731 series

731 series

731 series set G116 in August 2009
Replaced 711 series
Constructed 1996–2006
Entered service 1996
Number built 63 vehicles (21 sets)
Number in service 63 vehicles (21 sets)
Formation 3 cars per trainset
Fleet numbers G-101–121
Operator(s) JR Hokkaido
Depot(s) Sapporo
Line(s) served Hakodate Main Line, Chitose Line
Specifications
Car body construction Stainless steel
Car length 21,670 mm (71 ft 1 in) (end cars), 21,300 mm (69 ft 11 in) (intermediate cars)
Width 2,800 mm (9 ft 2 in)
Height 3,620 mm (11 ft 11 in)
Doors 3 per side
Maximum speed 130 km/h (80 mph)
Electric system(s) 20 kV AC (50 Hz)
Current collection method Overhead line
Multiple working 721 series, 733 series, 735 series, KiHa 201 series
Track gauge 1,067 mm (3 ft 6 in)

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.[1]

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.[2]

Car No. 1 2 3
Designation Tc' M Tc
Numbering KuHa 731-100 MoHa 731-100 KuHa 731-200
Capacity
(total/seated)		 141/50 151/52 143/50

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

Interior

Seating consists of longitudinal bench seating throughout, without the vestibule areas used on the earlier 721 series trains.[1]

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.[3]

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.[3]

Polycarbonate window protectors were added in 2002, and the original pantographs were replaced with single-arm pantographs between 2004 and 2005.[3]

Fleet history

The individual build histories of the fleet are as follows.[2]

Set No. Delivery date
G-101 12 December 1996
G-102 10 December 1996
G-103 13 December 1996
G-104 14 December 1996
G-105 23 February 1998
G-106 24 February 1998
G-107 24 February 1998
G-108 22 March 1998
G-109 23 March 1998
G-110 24 March 1998
G-111 16 December 1998
G-112 17 December 1998
G-113 18 December 1998
G-114 19 December 1998
G-115 20 December 1998
G-116 20 December 1998
G-117 21 December 1998
G-118 13 December 1998
G-119 13 December 1998
G-120 6 March 2006
G-121 5 March 2006

References

Wikimedia Commons has media related to 731 series.
  1. 1 2 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.
  2. 1 2 3 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.
  3. 1 2 3 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.
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