E721 series

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E721/SAT721 series
E721&SAT721.JPG
E721-0 series (right) and SAT721 series (left), August 2007
Manufacturer Kawasaki Heavy Industries, Tokyu Car Corporation, J-TREC (Niitsu and Yokohama)
Replaced 455 series, 417 series, 717 series, 719 series
Constructed 2006–2017
Entered service February 2007
Number under construction 36 vehicles (9 sets)
Number built 142 vehicles (61 sets)
Number in service 138 vehicles (59 sets)
Number scrapped 4 vehicles (2 sets)
Formation 2/4 cars per set
Fleet numbers P1–P44, P501–P504, P4-1–P4-19, SA101–SA103
Operator(s) JR East
Depot(s) Sendai
Line(s) served
Specifications
Car body construction Stainless steel
Car length 20,000 mm (65 ft 7 in)
Width 2,950 mm (9 ft 8 in)
Floor height 950 mm (3 ft 1 in)
Doors 3 pairs per side
Maximum speed 120 km/h (75 mph)
Power output 500 kW per motor
Electric system(s) 20 kV AC (50Hz)
Current collection method overhead catenary
Bogies DT72 (motored), TR256 (trailer)
Safety system(s) ATS-Ps
Multiple working 701 series
Track gauge 1,067 mm (3 ft 6 in)

The E721 series (E721系?) is an 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[edit]

  •          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)

Operations[edit]

Formations[edit]

As of 1 October 2015, 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.[2]

E721-0 series[edit]

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.[2]

E721-500 series[edit]

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.[2]

E721-1000 series[edit]

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.[3] The KuHa E720 is located at the southern end.[3]

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.[3] The KuHa cars have a toilet.[3]

SAT721 series[edit]

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.[2]

History[edit]

The first E721-0 series sets were delivered from December 2006, and entered service on 1 February 2007 on Tohoku Main Line services.[2] The first E721-500 and SAT721 series sets were delivered from February 2006 and entered service on Sendai Airport services on 18 March 2007.[2]

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, and were withdrawn.[2]

Intermediate cars for the first two E721-1000 sets on delivery from J-TREC Niitsu in September 2016

The first of a fleet of 19 new four-car E721-1000 sets (76 vehicles in total) was introduced on 30 November 2016[4] on Tohoku Main Line, Joban Line, and Senzan Line services, replacing older 719 series units.[5] The new trains are built by J-TREC, with construction shared between the company's Yokohama and Niitsu factories.[5] These trains feature LED interior lighting.[5]

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.[6]

Fleet/build details[edit]

The manufacturers and delivery dates for the fleet are as shown below.[2]

E721-0 series[edit]

Set No. Manufacturer Date delivered Date withdrawn
P-1 Kawasaki Heavy Industries 28 November 2006[7] 12 March 2011[Note 1]
P-2 Kawasaki Heavy Industries 17 January 2007  
P-3 Kawasaki Heavy Industries 17 January 2007  
P-4 Kawasaki Heavy Industries 17 January 2007  
P-5 Tokyu Car 18 December 2006  
P-6 Tokyu Car 18 December 2006  
P-7 Kawasaki Heavy Industries 15 January 2007  
P-8 Kawasaki Heavy Industries 6 February 2007  
P-9 Kawasaki Heavy Industries 6 February 2007  
P-10 Kawasaki Heavy Industries 23 February 2007  
P-11 Kawasaki Heavy Industries 23 February 2007  
P-12 Tokyu Car 15 January 2007  
P-13 Tokyu Car 15 January 2007  
P-14 Kawasaki Heavy Industries 28 February 2007  
P-15 Kawasaki Heavy Industries 28 February 2007  
P-16 Kawasaki Heavy Industries 8 March 2007  
P-17 Kawasaki Heavy Industries 8 March 2007  
P-18 Kawasaki Heavy Industries 23 March 2007  
P-19 Kawasaki Heavy Industries 23 March 2007[7] 12 March 2011[Note 1]
P-20 Kawasaki Heavy Industries 23 March 2007  
P-21 Kawasaki Heavy Industries 23 March 2007  
P-22 Kawasaki Heavy Industries 17 April 2007  
P-23 Kawasaki Heavy Industries 17 April 2007  
P-24 Kawasaki Heavy Industries 27 April 2007  
P-25 Kawasaki Heavy Industries 27 April 2007  
P-26 Kawasaki Heavy Industries 27 April 2007  
P-27 Kawasaki Heavy Industries 27 April 2007  
P-28 Kawasaki Heavy Industries 31 May 2007  
P-29 Kawasaki Heavy Industries 31 May 2007  
P-30 Kawasaki Heavy Industries 31 May 2007  
P-31 Kawasaki Heavy Industries 31 May 2007  
P-32 Kawasaki Heavy Industries 6 July 2007  
P-33 Kawasaki Heavy Industries 6 July 2007  
P-34 Tokyu Car 30 August 2007  
P-35 Tokyu Car 30 August 2007  
P-36 Tokyu Car 26 September 2007  
P-37 Tokyu Car 26 September 2007  
P-38 Kawasaki Heavy Industries 2 November 2007  
P-39 Kawasaki Heavy Industries 2 November 2007  
P-40 Kawasaki Heavy Industries 13 September 2010  
P-41 Kawasaki Heavy Industries 13 September 2010  
P-42 Kawasaki Heavy Industries 13 September 2010  
P-43 Kawasaki Heavy Industries 14 September 2010  
P-44 Kawasaki Heavy Industries 14 September 2010  
  1. ^ a b Destroyed by tsunami on 11 March 2011.

E721-500 series[edit]

Set No. Manufacturer Date delivered Date withdrawn
P-501 Kawasaki Heavy Industries 17 February 2006  
P-502 Kawasaki Heavy Industries 30 September 2006  
P-503 Kawasaki Heavy Industries 30 September 2006  
P-504 Tokyu Car 25 October 2006  

E721-1000 series[edit]

Set No. Manufacturer Date delivered Date withdrawn
P4-1 J-TREC 21 October 2016[8]  
P4-2 J-TREC 26 October 2016[8]  
P4-3 J-TREC 11 November 2016[8]  
P4-4 J-TREC 16 November 2016[8]  
P4-5 J-TREC 28 November 2016[8]  
P4-6 J-TREC 1 December 2016[8]  
P4-7 J-TREC 6 December 2016[8]  
P4-8 J-TREC 14 December 2016[8]  
P4-9 J-TREC 27 December 2016[8]  
P4-10 J-TREC 26 December 2016[8]  
P4-11 J-TREC    
P4-12 J-TREC    
P4-13 J-TREC    
P4-14 J-TREC    
P4-15 J-TREC    
P4-16 J-TREC    
P4-17 J-TREC    
P4-18 J-TREC    
P4-19 J-TREC    

SAT721 series[edit]

The three SAT721 series units being delivered in November 2006
Set No. Manufacturer Date delivered Date withdrawn
SA101 Kawasaki Heavy Industries 20 November 2006  
SA102 Kawasaki Heavy Industries 20 November 2006  
SA103 Kawasaki Heavy Industries 20 November 2006  

See also[edit]

References[edit]

  1. ^ 磐越西線でE721系の運転開始 [E721 series enter service on the Banetsu West Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 9 March 2017. Archived from the original on 9 March 2017. Retrieved 9 March 2017. 
  2. ^ a b c d e f g h JR電車編成表 2016冬 [JR EMU Formations - Winter 2016] (in Japanese). Japan: Kotsu Shimbunsha. 18 November 2015. p. 28-29. ISBN 978-4-330-62315-3. 
  3. ^ a b c d One, Akihiro (February 2017). E721系1000番台 [E721-1000 series]. Japan Railfan Magazine (in Japanese). Vol. 57 no. 670. Japan: Koyusha Co., Ltd. p. 50-53. 
  4. ^ E721系1000番台が営業運転を開始 [E721-1000 series enters revenue service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 9 December 2016. Archived from the original on 4 January 2017. Retrieved 4 January 2017. 
  5. ^ a b c E721系1000 代新造車両の投入について [Details of introduction of new E721-1000 series trains] (pdf). News release (in Japanese). Japan: East Japan Railway Company Sendai Division. 26 May 2016. Retrieved 27 May 2016. 
  6. ^ E721系1000番台中間車が甲種輸送される [E721-1000 series intermediate cars transported]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 23 September 2016. Archived from the original on 23 September 2016. Retrieved 23 September 2016. 
  7. ^ a b JR電車編成表 2010夏 [JR EMU Formations - Summer 2010] (in Japanese). Japan: Kotsu Shimbunsha. May 2010. p. 25. ISBN 978-4-330-14310-1. 
  8. ^ a b c d e f g h i j JR車両のうごき [JR rolling stock changes]. Tetsudo Daiya Joho Magazine (in Japanese). Vol. 46 no. 395. Japan: Kotsu Shimbun. March 2017. p. 127. 

External links[edit]