The is an AC electric multiple unit (EMU) train type operated by East Japan Railway Company (JR East) on services in the Sendai area of Japan 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
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
Designation Mc Tc' Numbering KuMoHa E721-xx KuHa E720-xx
The KuMoHa cars have one PS109 single-arm pantograph. The KuHa cars have a toilet.
E721-500 series
Designation Mc Tc' Numbering KuMoHa E721-50x KuHa E720-50x
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.
Designation Tc' M T Mc Numbering KuHa E720-10xx MoHa E721-10xx SaHa E721-10xx KuMoHa E7210-10xx Weight (t) 34.3 32.0 37.2 39.1 Capacity (seated/total) 50/132 62/152 62/152 56/138
The two motored cars (KuMoHa and MoHa) each have one PS109 single-arm pantograph. The KuHa cars have a toilet.
SAT721 series The two-car SAT721 series sets are formed as follows.
Designation Mc Tc' Numbering SAT721-10x SAT720-10x
The KuMoHa cars have one PS109 single-arm pantograph. The KuHa cars have a toilet.
AB900 series The Abukuma Express AB900 series are derived from the E721-500 and SAT721 series used for JR East.
Sets are formed as follows.
Set Numbering AB-1 AB901-1 AB900-1 AB-2 AB901-2 AB900-2AB-3AB901-3AB900-3AB-4AB901-4AB900-4AB-5AB901-5AB900-5
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 on 11 March 2011 while at Shinchi Station. Both sets were written off and scrapped.
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 services, replacing older 719 series units. The new trains are built by J-TREC, 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 Set No. Manufacturer Date delivered Date withdrawn P-1 Kawasaki Heavy Industries 28 November 2006 12 March 2011Destroyed by tsunami on 11 March 2011. P-2 17 January 2007 P-3 P-4 P-5 Tokyu Car 18 December 2006 P-6 P-7 Kawasaki Heavy Industries 15 January 2007 P-8 6 February 2007 P-9 P-10 23 February 2007 P-11 P-12 Tokyu Car 15 January 2007 P-13 P-14 Kawasaki Heavy Industries 28 February 2007 P-15 P-16 8 March 2007 P-17 P-18 23 March 2007 P-19 23 March 2007 12 March 2011 P-20 23 March 2007 P-21 P-22 17 April 2007 P-23 P-24 27 April 2007 P-25 P-26 P-27 P-28 31 May 2007 P-29 P-30 P-31 P-32 6 July 2007 P-33 P-34 Tokyu Car 30 August 2007 P-35 P-36 26 September 2007 P-37 P-38 Kawasaki Heavy Industries 2 November 2007 P-39 P-40 13 September 2010 P-41 P-42 P-43 P-44
E721-500 series The delivery of E721-500 series cars are as follows: Set No. Manufacturer Date delivered P-501 Kawasaki Heavy Industries 17 February 2006 P-502 30 September 2006 P-503 P-504 Tokyu Car 25 October 2006
E721-1000 series All manufactured by J-TREC. Set No. Date delivered P4-1 21 October 2016 P4-2 26 October 2016 P4-3 11 November 2016 P4-4 16 November 2016 P4-5 28 November 2016 P4-6 1 December 2016 P4-7 6 December 2016 P4-8 14 December 2016 P4-9 27 December 2016 P4-10 26 December 2016 P4-11 P4-12 P4-13 P4-14 P4-15 P4-16 P4-17 P4-18 P4-19
SAT721 series All sets are manufactured by Kawasaki and delivered as of 20 November 2006. Set No. SA101 SA102 SA103
AB900 series All sets are manufactured by J-TREC. Set No. Date delivered AB-1 21 February 2019 AB-2 February 2020AB-325 January 2022AB-4AB-5
See also Aoimori 703 series, a derivative for use on the Aoimori Railway Railway electrification in Japan
References
External links
JR East E721 series