711 series

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711 series
JNR 711 series EMU 029.JPG
711 series, January 2009
In service 1968–Present
Constructed 1967–1980
Number built 114 vehicles (38 sets)
Number in service 48 vehicles (16 sets) (as of 1 October 2013)
Formation 3 cars per trainset
Operator JR Hokkaido
Depot(s) Sapporo
Line(s) served Hakodate Main Line, Chitose Line, Muroran Main Line
Car body construction Steel
Car length 20,000 mm (65 ft 7 in)
Width 2,950 mm (9 ft 8 in)
Doors 2 per side
Maximum speed 110 km/h (70 mph)
Traction system Thyristor drive
Electric system(s) 20 kV AC (50 Hz)
Current collection method Overhead line
Bogies DT38 (motored), TR208 (trailer)
Safety system(s) ATS-SN, ATS-DN
Track gauge 1,067 mm (3 ft 6 in)

The 711 series (711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 1968. It was the first AC EMU train to be operated in Japan by the former Japanese National Railways (JNR).[1]


As of 1 October 2013, 48 vehicles (16 sets) are still in service, all based at Sapporo Depot.[2] These are all scheduled to be withdrawn and replaced by new 733 series EMUs by the end of fiscal 2014.[3]


Car No. 1 2 3
Designation Tc' M Tc
Numbering KuHa 711-200 MoHa 711-100 KuHa 711-100

Car 2 is fitted with one N-PS785 single-arm pantograph.[4]

Former prototype sets S901/902[edit]

The former prototype sets, S901 and S902 were formed as shown below.[5]

Designation Tc Mc Tc'
Numbering KuHa 711-100 KuMoHa 711-900 KuHa 711-900


Seating consists of a mixture of transverse seating bays and longitudinal bench seating.[1]


Prototype sets[edit]

Former prototype set S901 leading a 6-car formation at Sapporo, 1994

Two prototype 2-car sets, numbered KuMoHa 711-901 + KuHa 711-901 and KuMoHa 711-902 + KuHa 711-902, were delivered in February 1967 for test running ahead of the start of electric suburban services between Otaru and Takikawa from 1968. Both sets were based on the KiHa 22 diesel multiple unit design, but set 901 had opening two-pane windows and featured two sets of 4-leaf folding doors per side, whereas set 902 had sealed double-glazed windows, as used on the subsequent full-production sets. The two sets were modified to full-production standards in 1968 and 1970, but set 901 retained its opening windows.[6]

Full-production sets[edit]

Set S107 in original livery, 1982

The first full-production 3-car sets were delivered from August 1968.[1]

A third centre door was added to some of the KuHa 711 cars from 1987.[1]

All cars became no-smoking from 1 July 1992.[4]

Priority seating was added from 1 October 1997.[4]

Air conditioning was added to the 2-door sets between 2001 and 2002.[4]

The original scissors-type pantographs were replaced with N-PS785 single-arm pantographs between 2004 and 2005.[4]

Repainted sets[edit]

In 2011, set S-110 was repainted into its original JNR all-over crimson livery, and this was followed in May 2012 by a second similarly repainted set, S-114.[7]


  1. ^ a b c d JR全車輌ハンドブック2009 [JR Rolling Stock Handbook 2009]. Japan: Neko Publishing. 2009. p. 8. ISBN 978-4-7770-0836-0. 
  2. ^ JR電車編成表 2014冬 [JR EMU Formations - Winter 2014]. Japan: JRR. 1 December 2013. ISBN 978-4-330-42413-2. 
  3. ^ "733系電車増備と快速「エアポート」への投入について" [Details of additional order of 733 series trains and introduction on Airport rapid services] (pdf). News release (in Japanese). Japan: Hokkaido Railway Company. 14 May 2014. Retrieved 16 May 2014. 
  4. ^ a b c d e 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電車編成表 '98夏号 [JR EMU Formations - Summer 1998]. Japan: JRR. July 1998. p. 5. ISBN 4-88283-029-9. 
  6. ^ プロトタイプの世界 - Prototype World. Japan: Kōtsū Shimbunsha. December 2005. p. 111. OCLC 170056962. 
  7. ^ Katayama (September 2012). "5/28, 711系 S-114編成, 2編成目の国鉄色に" [28 May: 711 series set S-114 2nd set to be repainted in JNR livery]. Japan Railfan Magazine (Japan: Kōyūsha Co., Ltd.) 52 (617): p.161.