E501 series
The E501 series is an AC/DC dual-voltage electric multiple unit train type operated on local services by East Japan Railway Company in Japan since December 1995.
Design
Built jointly by Kawasaki Heavy Industries and Tokyu Car, the design is derived from the 209 series commuter EMU, and were initially operated as 10+5-car formations on Joban Line services out of in Tokyo, but were modified with the addition of toilets and transferred to Joban Line and Mito Line local services in the Mito area from March 2007.E501 series used to have Siemens GTO-VVVF when delivered that were similar to pre-refurbished Keikyu 2100 series. Currently, all trains had retrofitted with Toshiba IGBT-VVVF.
Formations
As of 1 April 2014, the fleet consists of four 10-car sets, numbered K701 to K704, and four 5-car sets, numbered K751 to K754. All are based at Katsuta Depot, and are formed as shown below with car 1 at the southern end.10-car sets (K701 - K704)
The four 10-car sets are formed as shown below, with four motored cars and six unpowered trailer cars.| Car No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Designation | Tc | M2 | M1 | T | T | T' | M2 | M1 | T | T'c |
| Numbering | KuHa E500-1000 | MoHa E500 | MoHa E501 | SaHa E501 | SaHa E501 | SaHa E500 | MoHa E500 | MoHa E501 | SaHa E501 | KuHa E501 |
- Cars 3 and 8 are each equipped with a PS29 lozenge-type pantograph.
- The end cars, 1 and 10, are fitted with a toilet, and also have a wheelchair space.
- Car 8 is designated as a moderately air-conditioned car.
5-car sets (K751 - K754)
| Car No. | 1 | 2 | 3 | 4 | 5 |
| Designation | Tc | M2 | M1 | T | T'c |
| Numbering | KuHa E500 | MoHa E500 | MoHa E501 | SaHa E501 | KuHa E501-1000 |
- Car 3 is equipped with a PS29 lozenge-type pantograph.
- Car 1 is fitted with a toilet.
- The end cars, 1 and 5, have a wheelchair space.
- Car 4 is designated as a moderately air-conditioned car.
Interior
History
The first 10+5-car train was originally scheduled to be delivered in time for entry into service from the March 1995 timetable revision, but deliveries from Kawasaki Heavy Industries in Kobe were delayed until May due to the effects of the Great Hanshin earthquake in January of that year. The first trains ultimately entered revenue service from the start of the 1 December 1995 timetable revision.Between September and October 2006, modifications were made to the side windows to allow some windows to be opened. From October 2006, the fleet underwent modifications to add toilets, and from the start of the 18 March 2007 timetable revision, the E501 series trains were displaced from Joban Line services out of Ueno by E531 series sets, and were transferred to local services on the Joban Line north of and on the Mito Line. Between 2011 and 2012, the fleet underwent a life-extension refurbishment programme, which involved replacing electrical and brake equipment.
Build details
The build details for the fleet are as shown below.| Set No. | Manufacturer | Delivered | Toilet added | Refurbished |
| K701 | Kawasaki Heavy Industries | 23 May 1995 | 21 February 2007 | 20 January 2012 |
| K702 | Kawasaki Heavy Industries | 20 February 1997 | 26 October 2006 | 5 November 2012 |
| K703 | Kawasaki Heavy Industries | 6 March 1997 | 20 November 2006 | 27 March 2012 |
| K704 | Tokyu Car | 18 March 1997 | 3 October 2006 | 26 January 2011 |
| K751 | Tokyu Car | 28 March 1995 | 31 January 2007 | 21 August 2011 |
| K752 | Kawasaki Heavy Industries | 21 February 1997 | 9 November 2006 | 21 May 2011 |
| K753 | Kawasaki Heavy Industries | 7 March 1997 | 6 December 2006 | 25 April 2011 |
| K754 | Tokyu Car | 19 March 1997 | 22 January 2007 | 1 September 2011 |