E721 series

E721/SAT721 series
E721-0 series (right) and SAT721 series (left), August 2007
In service	2007–Present
Manufacturer	Kawasaki Heavy Industries, Tokyu Car Corporation
Constructed	2006–2010
Number built	102 vehicles (51 sets)
Number in service	98 vehicles (49 sets)
Number scrapped	4 vehicles (2 sets)
Formation	2-cars per set
Fleet numbers	P1–P44, P501–P504, SA101–SA103
Operator(s)	JR East
Depot(s)	Sendai
Line(s) served	Tōhoku Main Line, Jōban Line, Senzan Line, Sendai Airport Line
Specifications
Car body construction	Stainless steel
Car length	20,000 mm
Width	2,950 mm
Doors	3 pairs per side
Maximum speed	120 km/h (75 mph)
Weight	74.4 t per set
Power output	500 kW per motor
Electric system(s)	20 kV AC (50Hz)
Current collection method	overhead catenary
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 2006.

Variants

• E721-0 series
• E721-500 series
• SAT721 series (owned by Sendai Airport Transit)

Operations

• Tōhoku Main Line
• Jōban Line
• Senzan Line
• Sendai Airport Line (E721-500 series and SAT721 series only)

History

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

Two sets, P1 and P19, were derailed and badly damaged by the 2011 Tōhoku earthquake and tsunami on 11 March 2011, and were withdrawn.

• 

  P1 and P19 sets after the tsunami in 2011

See also

• Aoimori 703 series, a derivative for use on the Aoimori Railway

External links

• JR East E721 series (Japanese)