721 series
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721 series | |
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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 |
Scrapped | 2023– |
Number built | 135 vehicles (34 sets) |
Number in service | 126 vehicles (31 sets) |
Formation | 3/6 cars per trainset |
Operators | ![]() |
Depots | Sapporo |
Lines 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 (81 mph) |
Traction system | Thyristor drive (1st-5th batch) GTO–VVVF (6th-7th batch) IGBT–VVVF (8th batch)[1] |
Electric system(s) | 20 kV 50 Hz AC (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
Design
[edit]The trains were built jointly by Hitachi, JR Hokkaido (Naebo Factory), Kawasaki Heavy Industries, and Tokyu Car (Yokohama).[3]
Fleet
[edit]As of 1 April 2012, the fleet consists of 135 vehicles, formed as 23 3-car sets and 11 6-car sets.[4]
Variants
[edit]- 721-0 series
- 721-1000 series
- 721-2000 series
- 721-3000 series
- 721-4000 series
- 721-5000 series
Withdrawal
[edit]Withdrawals of the 721 series commenced in 2023 with 721-3000 series set F-3016 being scrapped as of August.[5] This continued the following year with sets F-4 and F-3015 being sent to Naebo for scrapping in April 2024.[6][7]
In April 2024, JR Hokkaido announced that it will replace the 721 series with additional 733 series trains on Chitose Line Airport services.[8]
References
[edit]![](https://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
- ^ "
新車 ガイド1:全 室 「uシート」化 改造 車 とともに導入 721系 8次 車 ".鉄道 ファン. 43 (12). Koyusha: 64–69. 1 December 2003. - ^ 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. - ^ 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). 43 (359): 22. - ^ 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. - ^ "【もうそんな
時代 か…】721系 の解体 を開始 【JR北海道 】" [[Is it that time already?] Dismantling of 721 series begins [JR Hokkaido]]. RM News (in Japanese). Japan: Neko Publishing. 29 August 2023. Retrieved 24 April 2024. - ^ "【
解体 待 ちか?】721系 F-4編成 苗穂 工場 入場 " [[Awaiting demolition?] 721 series set F-4 entered Naebo factory]. RM News (in Japanese). Japan: Neko Publishing. 11 April 2024. Retrieved 10 May 2024. - ^ "【JR
北海道 】721系 F-3015編成 が苗穂 工場 へ廃車 入場 " [[JR Hokkaido] 721 series set F-3015 enters Naebo factory for scrapping]. RM News (in Japanese). Japan: Neko Publishing. 25 April 2024. Retrieved 10 May 2024. - ^ JR
北海道 、733系 増 備で721系 置換 え -新幹線 札幌 開業 後 に速達 化 も [JR Hokkaido to replace 721 series with additional 733 series trains - Speeding up service after opening of Sapporo Shinkansen line]. Mynavi News (in Japanese). 4 April 2024. Retrieved 10 May 2024.