731 series

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]

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.[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

gollark: Library queues event, event goes into queue, it's pulled out of the queue, the thread gets resumed with the new event, the library queues the event again...

gollark: Wait, every time it's resumed? Won't that cause an infinite loop?

gollark: Wonderful.

gollark: `shell.getRunningProgram`?

gollark: * least

References

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.
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.
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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[neko2009-1] 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.

[jrr2017_winter-2] 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.

[jrr2010-3] 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.