E257 series

The E257 series (E257系, E257-kei) is a DC electric multiple unit (EMU) train type operated in Japan for limited express services by East Japan Railway Company (JR East) and built jointly by Hitachi, Kinki Sharyo, and Tokyu Car Corporation.

E257 series
An E257-0 series train on a Chuo Line Azusa service in January 2008
In service2001–present
ManufacturerHitachi, Kinki Sharyo, and Tokyu Car Corporation
Family nameA-train
Replaced
Entered service1 December 2001
Refurbished2019–
Number built249 vehicles
(5 × 2-car, 19 × 5-car, 16 × 9-car)
Number in service239 vehicles
Number scrapped10 vehicles (5 sets)
SuccessorE353 series (Azusa, Kaiji)
Formation5/9 cars per trainset
Formerly: 2 cars per trainset
OperatorsJR East
DepotsMatsumoto, Makuhari, Omiya
Lines servedE257-0 (2001–2019):
E257-500 (2004–):
  • Uchibo Line
  • Sotobo Line
  • Sobu Main Line
  • Narita Line
  • Kashima Line
E257-2000/-2500 (2020–):
E257-5500 (2023–):
  • Takasaki Line
Specifications
Car length21.000 m (68 ft 10.8 in) (end cars)
20.500 m (67 ft 3.1 in) (intermediate cars)
Doors2 per side
Maximum speed130 km/h (81 mph)
Traction systemIGBT–VVVF (Mitsubishi Electric)
Traction motors3-phase AC squirrel-cage induction motors (Mitsubishi Electric)
Acceleration0.56 m/s2 (1.3 mph/s)
Deceleration1.4 m/s2 (3.1 mph/s)
Electric system(s)1,500 V DC overhead catenary
Current collector(s)Pantograph
Braking system(s)Regenerative brake, electronically controlled pneumatic brakes, snow-resistant brake
Safety system(s)ATS-SN, ATS-P
Track gauge1,067 mm (3 ft 6 in)
Notes/references
This train won the 45th Blue Ribbon Award in 2002.
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