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.[1]

731 series
731 series set G116 in August 2009
Replaced711 series
Constructed1996–2006
Entered service1996
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 length21,670 mm (71 ft 1 in) (end cars), 21,300 mm (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 (80 mph)
Electric system(s)20 kV AC (50 Hz)
Current collection methodOverhead line
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.[2]

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.[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-10112 December 1996
G-10210 December 1996
G-10313 December 1996
G-10414 December 1996
G-10523 February 1998
G-10624 February 1998
G-10724 February 1998
G-10822 March 1998
G-10923 March 1998
G-11024 March 1998
G-11116 December 1998
G-11217 December 1998
G-11318 December 1998
G-11419 December 1998
G-11520 December 1998
G-11620 December 1998
G-11721 December 1998
G-11813 December 1998
G-11913 December 1998
G-1206 March 2006
G-1215 March 2006
gollark: ... I got a dino on my CB red zyu trade.
gollark: Do you *want* a CB ice?
gollark: Probably more if you offload it to other people.
gollark: Well... 8 slots, 2 days per batch... I guess 24?
gollark: 🦑

References
  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.
  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.
  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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