721 series

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Not to be confused with E721 series.
721 series
JR721-TOYOHOROHOROMUI.JPG
A pair of 721 series 3-car sets led by set F-3, August 2008
In service 1988–Present
Manufacturer Hitachi, JR Hokkaido, Kawasaki Heavy Industries, Tokyu Car
Constructed 1988–2003
Number built 135 vehicles (34 sets)
Number in service 135 vehicles (34 sets)
Formation 3/6 cars per trainset
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 2,954 mm (9 ft 8.3 in)
Height 4,090 mm (13 ft 5 in)
Doors 3 per side
Maximum speed 130 km/h (80 mph)
Traction system Thyristor drive (1-5th batch)
GTO-VVVF (6th batch onwards)
Electric system(s) 20 kV AC (50 Hz)
Current collection method Overhead line
Safety system(s) ATS-DN
Multiple working 731 series, 733 series, 735 series
Track gauge 1,067 mm (3 ft 6 in)

The 721 series (721系?) is an AC electric multiple unit (EMU) operated by Hokkaido Railway Company (JR Hokkaido) on Sapporo area suburban services in Hokkaido, Japan since 1988.[1]

Design[edit]

The trains were built jointly by Hitachi, JR Hokkaido (Naebo Factory), Kawasaki Heavy Industries, and Tokyu Car (Yokohama).[2]

Fleet[edit]

As of 1 April 2012, the fleet consists of 135 vehicles, formed as 23 3-car sets and 11 6-car sets.[3]

Variants[edit]

  • 721-0 series
  • 721-1000 series
  • 721-2000 series
  • 721-3000 series
  • 721-4000 series
  • 721-5000 series

References[edit]

  1. ^ JR全車輌ハンドブック2009 [JR Rolling Stock Handbook 2009]. Japan: Neko Publishing. 2009. pp. 312–318. ISBN 978-4-7770-0836-0. 
  2. ^ Saka, Masahiro (March 2014). "JR第1世代の車両・現況と概要" [JR 1st-generation rolling stock: Current situation and overview]. Tetsudō Daiya Jōhō Magazine (in Japanese) (Japan: Kōtsū Shimbun) 43 (359): 22. 
  3. ^ JR電車編成表 2012夏 [JR EMU Formations - Summer 2012]. Japan: JRR. May 2012. pp. 6–7. ISBN 978-4-330-28612-9.