# E331 series

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Japanese train type

E331 series E331 series set AK1 in service on the Keiyo Line in May 2010 In service 2007–2011 Manufacturers Kawasaki Heavy Industries, Tokyu Car Corporation Constructed 2006 Entered service 18 March 2007 Scrapped 2014 Number built 14 vehicles (1 set) Number scrapped 14 vehicles Successor E233-5000 series Formation 14 cars per trainset Fleet numbers AK1 Operator JR East Depot Keiyo (Shin-Narashino) Line served Keiyo Line Specifications Car body construction Stainless steel[1] Car length 13.4 m (44 ft 0 in) (cars 2-6, 9-13) 16.5 m (54 ft 2 in) (cars 1, 7, 8, 14)[2] Width 2,989 mm (9 ft 9.7 in) Doors 3 pairs per side Maximum speed 120 km/h (75 mph) Traction system Variable frequency (IGBT) Electric system 1,500 V DC overhead catenary Bogies DT73/TR257/TR258 Safety systems ATS-P, ATS-SN Track gauge 1,067 mm (3 ft 6 in)

The **E331 series** (E331系) was an [electric multiple unit](/source/Electric_multiple_unit) (EMU) train introduced experimentally from 2007 on commuter services on the [Keiyo Line](/source/Keiyo_Line) in Japan operated by [East Japan Railway Company](/source/East_Japan_Railway_Company) (JR East). Only one trainset was built, and it differed significantly from other JR commuter EMUs in having [articulated](/source/Articulated_vehicle) cars with [shared bogies](/source/Jacobs_bogie) and using [direct-drive](/source/Direct_drive_mechanism) motors.[2]

## Bogies

The 14-car set was mounted on a total of 16 [bogies](/source/Bogie): four TR257 trailer bogies (cars 1, 7, 8, 14), six TR258 [shared trailer bogies](/source/Jacobs_bogie), and six DT73 [shared motor bogies](/source/Jacobs_bogie).[3]

		- TR257 trailer bogie

		- TR258 shared trailer bogie

		- DT73 shared motor bogie

## Formation

The lone set, AK1, consisted of two 7-car half-sets, and is formed as follows, with car 1 at the Tokyo end.[1][3]

Car No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Designation Tc' M T2 M T M T4 T3 M T2 M T M Tc Numbering KuHa E330-1 MoHa E331-6 SaHa E331-502 MoHa E331-5 SaHa E331-2 MoHa E331-4 SaHa E331-1001 SaHa E330-1 MoHa E331-3 SaHa E331-501 MoHa E331-2 SaHa E331-1 MoHa E331-1 KuHa E331-1 Weight (t) 25.11 16.1 16.7 16.1 16.5 16.1 20.2 21.5 16.1 16.7 16.1 16.5 16.1 24.11 Capacity (total/seated) 115/34 107/34 133/46 107/34 115/34

SaHa E330-1 (car 8) in November 2006

- Cars 3 and 10 (SaHa E331-502 and SaHa E331-501) were each fitted with one PS37 single-arm [pantograph](/source/Pantograph_(rail)).[1]

- Cars 1 and 14 seated 36 when the seats are configured in transverse mode.[3]

## Interior

Cars 2 to 13 had longitudinal seating, while the end cars 1 and 14 had transverse seating bays which could be rotated and rearranged longitudinally against the train sides to provide increased standing space during peak hours.[4]

		- General interior view

		- 5-person bench seat

		- Transverse seating bay in car 1

		- LCD passenger information display

## History

Incorporating new technology tested on the earlier experimental [E993 series](/source/E993_series) "AC Train", the E331 series was delivered to JR East in March 2006. Cars 1 to 7 were built by [Tokyu Car Corporation](/source/Tokyu_Car_Corporation) in [Yokohama](/source/Yokohama), and cars 8 to 14 were built by [Kawasaki Heavy Industries](/source/Kawasaki_Heavy_Industries) in [Kobe](/source/Kobe).[1]

Following extensive test running, the set entered revenue service on the [Keiyo Line](/source/Keiyo_Line) between Tokyo and [Soga](/source/Soga_Station) from the start of the revised timetable on 18 March 2007, used only on weekend services.[5] From April, the set was taken out of service, and in October 2007, the seven Kawasaki-built cars were returned to their manufacturer for modifications, and in March 2008, the seven Tokyu Car cars were also returned to Tokyu Car for modifications.[5] The set was returned to service on 23 December 2008.[6]

The set was removed from revenue service in May 2009, returning to service on 3 April 2010.[7] It was subsequently removed from service again, and remained stored out of service at Shin-Narashino Depot from early 2011 before finally being hauled to Nagano Works in March 2014 for scrapping.[8]

		- Cars 1 to 7 on delivery from Tokyu Car's Yokohama factory, March 2006

		- The E331 series set in service on the Keiyo Line, June 2010

		- A sticker on the Keiyo Line platform at Tokyo Station marking the door position for E331 series trains, April 2008

		- The E331 series set being hauled to JR East's Nagano Works in March 2014

## See also

- [E231 series](/source/E231_series)

- [E233 series](/source/E233_series)

## References

1. ^ [***a***](#cite_ref-jrr2007_1-0) [***b***](#cite_ref-jrr2007_1-1) [***c***](#cite_ref-jrr2007_1-2) [***d***](#cite_ref-jrr2007_1-3) *JR電車編成表 '07冬号* [*JR EMU Formations – Winter 2007*] (in Japanese). Japan: JRR. December 2006. p. 54. [ISBN](/source/ISBN_(identifier)) [978-4-88283-046-7](https://en.wikipedia.org/wiki/Special:BookSources/978-4-88283-046-7).

1. ^ [***a***](#cite_ref-neko2009_2-0) [***b***](#cite_ref-neko2009_2-1) *JR全車輌ハンドブック2009* [*JR Rolling Stock Handbook 2009*] (in Japanese). Japan: Neko Publishing. 2009. pp. 389–390. [ISBN](/source/ISBN_(identifier)) [978-4-7770-0836-0](https://en.wikipedia.org/wiki/Special:BookSources/978-4-7770-0836-0).

1. ^ [***a***](#cite_ref-railfan542_3-0) [***b***](#cite_ref-railfan542_3-1) [***c***](#cite_ref-railfan542_3-2) "E331系一般形直流電車" [E331 series DC EMU]. *[Japan Railfan Magazine](/source/Japan_Railfan_Magazine)* (in Japanese). Vol. 46, no. 542. Japan: Koyusha Co., Ltd. June 2006. pp. 84–87.

1. **[^](#cite_ref-dj266_4-0)** "JR東日本 E331系一般型直流電車（量産先行者/京葉線）" [JR East E331 series DC EMU (Keiyo Line/pre-production train)]. *Tetsudō Daiya Jōhō Magazine* (in Japanese). Vol. 35, no. 266. Japan: Kōtsū Shimbun. June 2006. pp. 74–75.

1. ^ [***a***](#cite_ref-ikaros_profile_2011_5-0) [***b***](#cite_ref-ikaros_profile_2011_5-1) *首都圏新系列車両PROFILE* [*Tokyo Area New-generation Rolling Stock Profile*] (in Japanese). Japan: Ikaros Publishing. 15 April 2011. pp. 98–99. [ISBN](/source/ISBN_(identifier)) [978-4-86320-436-2](https://en.wikipedia.org/wiki/Special:BookSources/978-4-86320-436-2).

1. **[^](#cite_ref-jre20081219_6-0)** [Ｅ３３１系の運転再開について](https://web.archive.org/web/20120219113603/http://www.jrchiba.jp/news/pdf/20081219E331.pdf) [Return of E331 series to service] (PDF). *News release* (in Japanese). Chiba, Japan: East Japan Railway Company – Chiba Branch. 19 December 2008. Archived from [the original](http://www.jrchiba.jp/news/pdf/20081219E331.pdf) (PDF) on 19 February 2012. Retrieved 11 October 2011.

1. **[^](#cite_ref-railfan20100405_7-0)** ["E331系ケヨAK1編成が営業運転に"](http://railf.jp/news/2010/04/05/130800.html) [E331 series set AK1 in revenue service]. *Japan Railfan Magazine Online* (in Japanese). Japan: Koyusha Co., Ltd. 5 April 2010. Retrieved 11 October 2011.

1. **[^](#cite_ref-rmnews20140327_8-0)** ["E331系AK1編成長野へ配給"](https://web.archive.org/web/20140327073919/http://rail.hobidas.com/rmn/archives/2014/03/jre331ak1.html) [E331 series set AK1 moved to Nagano]. *RM News* (in Japanese). Japan: Neko Publishing Co., Ltd. 27 March 2014. Archived from [the original](http://rail.hobidas.com/rmn/archives/2014/03/jre331ak1.html) on 27 March 2014. Retrieved 10 April 2014.

## Further reading

- *首都圏新系列車両 Profile: 209/E231/E233系グループの全貌* 首都圏新系列車両PROFILE [*Tokyo Area New-generation Rolling Stock Profile*] (in Japanese). Japan: Ikaros Publishing. 15 April 2011. [ISBN](/source/ISBN_(identifier)) [978-4-86320-436-2](https://en.wikipedia.org/wiki/Special:BookSources/978-4-86320-436-2).

## External links

Wikimedia Commons has media related to [JR East E331](https://commons.wikimedia.org/wiki/Category:JR_East_E331).

- [E331 series](https://web.archive.org/web/20130828175625/http://www.jreast.co.jp/train/local/e331.html) at the [Wayback Machine](/source/Wayback_Machine) (archived 28 August 2013) (JR East) (in Japanese)

- [JR East E331 series](https://web.archive.org/web/20131105022459/http://railf.jp/car/jr/east/e331.html) (Japan Railfan Magazine Online) (in Japanese)

v t e Multiple-units of East Japan Railway Company Current / active Shinkansen AC EMUs E2 E3 E5 E6 E7 E8 Conventional lines (Narrow- gauge) DC EMUs Commuter E127 E129 E131 205 209 211 E231 E233 E235 Limited express 253 255 E257 E259 E261 E353 AC/DC EMUs Commuter E501 E531 Limited express E653 E655 E657 AC EMUs Commuter 701 719 E721 Limited express E751 BEMUs DC EV-E301 AC EV-E801 DMUs Diesel KiHa 40 KiHa 100/110 KiHa E120 KiHa E130 KiHa 141 Diesel-electric GV-E400 Hybrid MUs Commuter KiHa E200 HB-E210 HB-E220 Resort/deluxe trains E001 HB-E300 Non-revenue AC EMUs E926 "East-i" E956 DC EMUs 143 145 AC/DC EMUs E491 E493 DMUs Diesel KiYa E193 KiYa E195 Diesel-electric GV-E197 Future Shinkansen AC EMUs E10 Conventional lines AC EMUs E723 Fuel cell EMUs FV-E991 Retired / withdrawn Shinkansen AC EMUs 200 400 E1 E4 Conventional lines DC EMUs Commuter KuMoHa 12 KuMoHa 40 101 103 105 107 113 115 123 201 203 207 E217 301 Limited express 157 165 167 169 183 185 189 215 251 E351 AC/DC EMUs Commuter 403 415 417 453 455 457 Limited express 483 485 489 583 651 AC EMUs 715 717 DMUs KiHa 20 KiHa 30 KiHa 35 KiHa 37 KiHa 38 KiHa 45 KiHa 52 KiHa 58 KiHa 59 Non-revenue AC EMUs 925 STAR21 KuMoYa 740 KuMoYa 743 DC EMUs KuMoYa 90 193 901 E331 E993 AC/DC EMUs KuMoYa 441 443 KuYa 497 E991 DMU KiYa 191 Hybrid MU KiYa E991 DC BEMU E995 Experimental Fastech 360 E331

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Adapted from the Wikipedia article [E331 series](https://en.wikipedia.org/wiki/E331_series) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/E331_series?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.