E531 series
| E531 series | |
|---|---|
An E531 series train on the Joban Line
(in March 2019 Between Matsudo Station and Kanamachi Station) | |
| In service | 2005–present |
| Manufacturers | Tokyu Car Corporation, Kawasaki Heavy Industries, JR East, J-TREC |
| Replaced | 403 series, 415 series, some E501 series |
| Constructed | 2005–2020, 2024 |
| Entered service | 9 July 2005 |
| Number built |
|
| Number in service | 460 vehicles |
| Formation | 5/10 cars per trainset |
| Fleet numbers |
|
| Operator | JR East |
| Depot | Katsuta |
| Lines 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 | 1,130 mm (3 ft 8 in) |
| Doors | 4 pairs per side |
| Maximum speed | 130 km/h (81 mph) |
| Traction system | PWM 2-level IGBT–VVVF (Hitachi) |
| Traction motors | 4 × 140 kW (190 hp) 3-phase AC induction motor (Hitachi) |
| Power output | 1.12 MW (1,500 hp) (5-car sets) 2.24 MW (3,000 hp) (10-car sets) |
| Acceleration | 2.5 km/(h⋅s) (1.6 mph/s) |
| Deceleration | 4.2 km/(h⋅s) (2.6 mph/s) |
| Electric systems | 1,500 V DC and 20 kV 50 Hz AC, both from overhead catenary |
| Current collection | PS37A single-arm pantograph |
| Bogies | DT71 (motored) TR255 (trailer) |
| Braking system | Regenerative brake |
| Safety systems | ATS-SN, ATS-P, ATS-Ps |
| Track gauge | 1,067 mm (3 ft 6 in) |
The E531 series (Japanese: E531系, Hepburn: E531-kei) is an electric multiple unit (EMU) train type operated by East Japan Railway Company (JR East) in Japan. It was introduced by JR East on 9 July 2005 to replace the aging 403 and 415 series EMUs running on the Jōban Line from Ueno Station in Tokyo. The stock is a dual-voltage (1,500 V DC & 20 kV AC) development of the DC-only E231 series suburban EMU design, and can run at speeds of up to 130 km/h (81 mph) in service.