E721 Series
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The is an AC
electric multiple unit An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a numbe ...
(EMU) train type operated by
East Japan Railway Company The is a major passenger railway company in Japan and is the largest of the seven Japan Railways Group companies. The company name is officially abbreviated as JR-EAST or JR East in English, and as in Japanese. The company's headquarters are ...
(JR East) on services in the
Sendai is the capital Cities of Japan, city of Miyagi Prefecture, the largest city in the Tōhoku region. , the city had a population of 1,091,407 in 525,828 households, and is one of Japan's 20 Cities designated by government ordinance of Japan, desig ...
area of
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
since February 2007.


Variants

* E721-0 series 2-car sets, since February 2007 * E721-500 series 2-car sets, since March 2007 * E721-1000 series 4-car sets, since November 2016 * SAT721 series 2-car sets, since March 2007 (owned by Sendai Airport Transit) * AB900 series 2-car sets, since July 2019 File:JRE EC721-0 20070325 001.jpg, E721-0 series set P-4 in March 2007 File:JRE E721 500.JPG, E721-500 series set P-502 in November 2007 File:JR-East-E721-1000.jpg, E721-1000 series set P4-14 in January 2017 File:SAT-721.JPG, SAT721 series set SA102 in March 2008 File:Abukuma-kyuko-AB900-AB1-20190221-133537.jpg, AB900 series set AB-1 on delivery at Zushi Station in February 2019


Operations


Formations

, the fleet consists of 42 two-car E721-0 series sets (P-2 to P-44), four E721-500 series two-car sets (P-501 to P-504), and three SAT721 series two-car sets (SA101 to SA103), formed as follows with one motored (Mc) and one trailer (Tc') car.


E721-0 series

The KuMoHa cars have one PS109 single-arm
pantograph A pantograph (, from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical movements in a second pen. If a line dr ...
. The KuHa cars have a toilet.


E721-500 series

The KuMoHa cars have one PS109 single-arm pantograph. The KuHa cars have a toilet.


E721-1000 series

The 19 four-car E721-1000 series sets (P4-1 to P4-19) are formed as follows, with two motored ("M") cars and two non-powered trailer ("T") cars. The KuHa E720 is located at the southern end. The two motored cars (KuMoHa and MoHa) each have one PS109 single-arm pantograph. The KuHa cars have a toilet. File:JR East E721-1000 series P4-5 interior 20170108.jpg, The interior of car KuMoHa E721-1005 of set P4-5 in January 2017 File:JR East E721-1000 series LED information board 20170108.jpg, An LED passenger information panel above the doorway in car KuMoHa E721-1005 of set P4-5 in January 2017


SAT721 series

The two-car SAT721 series sets are formed as follows. The KuMoHa cars have one PS109 single-arm pantograph. The KuHa cars have a toilet. File:SAT721Train interior.jpg, The interior of car SAT721-101 in April 2017 File:SAT721Train carrycasespace.jpg, Priority seating and luggage space in car SAT721-101 in April 2017


AB900 series

The Abukuma Express AB900 series are derived from the E721-500 and SAT721 series used for
JR East The is a major passenger railway company in Japan and is the largest of the seven Japan Railways Group companies. The company name is officially abbreviated as JR-EAST or JR East in English, and as in Japanese. The company's headquarters are ...
. Sets are formed as follows.


History

The first E721-0 series sets were delivered from December 2006, and entered service on 1 February 2007 on Tohoku Main Line services. The first E721-500 and SAT721 series sets were delivered from February 2006 and entered service on Sendai Airport services on 18 March 2007. Two sets, P-1 and P-19, were derailed and badly damaged by the
2011 Tōhoku earthquake and tsunami The occurred at 14:46 JST (05:46 UTC) on 11 March. The magnitude 9.0–9.1 (M) undersea megathrust earthquake had an epicenter in the Pacific Ocean, east of the Oshika Peninsula of the Tōhoku region, and lasted approximately six minutes ...
on 11 March 2011 while at
Shinchi Station is a railway station in the town of Shinchi, Fukushima Prefecture, Japan, operated by East Japan Railway Company (JR East). Operation of the station was suspended due to severe damage to the railway and station facilities caused by the 2011 T ...
, and were withdrawn. File:Shinchi Sta 20110404.jpg, The remains of sets P-1 and P-19 at
Shinchi Station is a railway station in the town of Shinchi, Fukushima Prefecture, Japan, operated by East Japan Railway Company (JR East). Operation of the station was suspended due to severe damage to the railway and station facilities caused by the 2011 T ...
after the tsunami in 2011 The first of a fleet of 19 new four-car E721-1000 sets (76 vehicles in total) was introduced on 30 November 2016 on Tohoku Main Line, Joban Line, and
Senzan Line The is a railway line in Japan. Part of the East Japan Railway Company (JR East) system, it runs from Sendai Station in Sendai, Miyagi Prefecture to Uzen-Chitose Station in Yamagata, Yamagata Prefecture, acting as a connector between the T ...
services, replacing older 719 series units. The new trains are built by
J-TREC is a manufacturer of heavy rail cars in Japan, formerly known as . The company is based in Kanazawa-ku, Yokohama, and a member of East Japan Railway Company (JR East) group. J-TREC manufactures rail vehicles not only for JR East and Tokyu Corp ...
, with construction shared between the company's Yokohama and Niitsu factories. These trains feature LED interior lighting. The first four E721-1000 series intermediate cars were delivered from J-TREC's Niitsu factory to its Yokohama factory in September 2016 to be combined with driving cars built there. In order to replace their 8100 series trains, Abukuma Express announced the order of new AB900 series trains in summer 2018. They are based on the E721 series, and are the first new trains for Abukuma Express since 1988. The first AB900 series set was delivered in February 2019. It entered service on 1 July 2019.


Fleet/build details

The manufacturers and delivery dates for the fleet are as shown below.


E721-0 series


E721-500 series


E721-1000 series

All manufactured by
J-TREC is a manufacturer of heavy rail cars in Japan, formerly known as . The company is based in Kanazawa-ku, Yokohama, and a member of East Japan Railway Company (JR East) group. J-TREC manufactures rail vehicles not only for JR East and Tokyu Corp ...
.


SAT721 series

All manufactured by Kawasaki and delivered November 20 2006.


AB900 series

Both manufactured by J-TREC.


See also

*
Aoimori 703 series The is an electric multiple unit (EMU) train type operated by the third-sector railway operator Aoimori Railway on the Aoimori Railway Line in Aomori Prefecture, Japan, since March 2014. Overview Based on the JR East E721 series EMUs first i ...
, a derivative for use on the
Aoimori Railway The is a regional rail line in Aomori Prefecture, Japan that is operated by the Aoimori Railway Company. It connects the terminal station of the Iwate Galaxy Railway Line, Metoki Station, in the town of Sannohe to Aomori Station, the termi ...
* Railway electrification in Japan


References


External links


JR East E721 series
{{JR East EMU Electric multiple units of Japan J-TREC multiple units East Japan Railway Company 20 kV AC multiple units Train-related introductions in 2006 Tokyu Car multiple units Kawasaki multiple units