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721 series

Japanese train type

Summary

Japanese train type

Field	Value
name	721 series
image	JRH Series721 F4103.jpg
imagesize	300px
caption	Set F-4103, August 2024
service	1988–Present
manufacturer	Hitachi, JR Hokkaido, Kawasaki Heavy Industries, Tokyu Car
yearconstruction	1988–2003
yearscrapped	2023–
numberbuilt	135 vehicles (34 sets)
numberservice	126 vehicles (31 sets)
formation	3/6 cars per trainset
operator
depots	Sapporo
lines	Hakodate Main Line, Chitose Line
carbody	Stainless steel
carlength	21,670 mm (end cars)
21,300 mm (intermediate cars)
width	2,954 mm
height	4,090 mm
doors	3 per side
maxspeed	130 km/h
traction	Thyristor drive (1st-5th batch)
GTO–VVVF (6th-7th batch)
IGBT–VVVF (8th batch)
electricsystem	(overhead line)
safety	ATS-DN
multipleworking	731 series, 733 series, 735 series
gauge

21,300 mm (intermediate cars) GTO–VVVF (6th-7th batch) IGBT–VVVF (8th batch)

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

Design

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

Fleet

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

Variants

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

Withdrawal

Withdrawals of the 721 series commenced in 2023 with 721-3000 series set F-3016 being scrapped as of August. This continued the following year with sets F-4 and F-3015 being sent to Naebo for scrapping in April 2024.

In April 2024, JR Hokkaido announced that it will replace the 721 series with additional 733 series trains on Chitose Line Airport services.

References

(1 December 2003). "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". Koyusha.
(2009). "JR全車輌ハンドブック2009". Neko Publishing.
Saka, Masahiro. (March 2014). "JR第1世代の車両・現況と概要". Tetsudō Daiya Jōhō Magazine.
(May 2012). "JR電車編成表 2012夏". JRR.
(29 August 2023). "【もうそんな時代か…】721系の解体を開始【JR北海道】". Neko Publishing.
(11 April 2024). "【解体待ちか？】721系F-4編成苗穂工場入場". Neko Publishing.
(25 April 2024). "【JR北海道】721系F-3015編成が苗穂工場へ廃車入場". Neko Publishing.
(2024-04-04). "". link

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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