E235 series
An E235-0 series train on the Yamanote Line in May 2021
ManufacturerJ-TREC
Built at
Family namesustina
ReplacedE217 series (Sōbu/Yokosuka Lines)
Constructed2015–present
Entered service30 November 2015 (2015-11-30)
Number under construction513 vehicles
Number built782 vehicles (as of 13 May 2022 (2022-05-13))
Number in service778 vehicles (79 sets)
Formation11/4 cars per trainset
OperatorsJR East
Lines served
Specifications
Car body constructionStainless steel
Car length
  • 20 m (65 ft 7 in) (including couplers)
  • 19.57 m (64 ft 2 in) (end cars)
  • 19.5 m (64 ft 0 in) (intermediate cars)
Width2.95 m (9 ft 8 in)
Height3.62 m (11 ft 11 in)
Floor height1.13 m (3 ft 8 in)
Doors
  • 4 pairs per side
  • 2 doors per side (Green cars)
Maximum speed120 km/h (75 mph)
Traction systemPWM 2-level SiC–VVVF (Mitsubishi[lower-alpha 1])
Traction motorsMT79 totally enclosed fan cooled 3-phase AC induction motor
Transmission7.07:1 (99:14) gear ratio
Acceleration3.0 km/(h⋅s) (1.9 mph/s)
Deceleration4.2 km/(h⋅s) (2.6 mph/s)
Electric system(s)1,500 V DC overhead catenary
Current collector(s)Pantograph
BogiesDT80, TR255, TR264
Safety system(s)ATS-P, D-ATC
Track gauge1,067 mm (3 ft 6 in)

The E235 series (E235系, E235-kei) is a DC electric multiple unit (EMU) commuter and suburban train type operated by East Japan Railway Company (JR East). The commuter variant was introduced on Yamanote Line services in November 2015, and the suburban variant entered service on the Sōbu Rapid and Yokosuka Lines on 21 December 2020.

Design features

The E235 series design was developed from the earlier E233 series trains, and like the E233 and E231 series trains, the new E235 series trains have stainless steel bodies.[1] The exterior styling was overseen by the industrial design firm Ken Okuyama Design.[2] Baggage racks and hand-holds have been lowered 5 cm (1.97 in) for easier access and the seats are 1 cm (0.39 in) wider than previous trains. The car interiors also have up to 36 digital monitors for various informational displays. The window behind the drivers cab has been lowered so children can get a better view of the operator of the cars. The temperature of each car is also monitored; the system can predict the number of passengers at upcoming stations and adjust the temperature for passenger comfort. This information is also communicated to a smart phone application, allowing customers to choose in which car to ride based on their temperature preference.[3] In 2017, the E235 series received the Laurel Prize.[4]

Variants

History

Details of the E235 series design were first announced in July 2014.[5] The first, pre-series set 01, train was delivered from the J-TREC factory at Akiha-ku, Niigata in March 2015,[6] with test-running commencing on the Yamanote Line on 30 March.[7]

Set number 01 entered revenue service on 30 November 2015, with a departure ceremony at Osaki Station, but was taken out of service later the same day following faults with door-close indicators and problems stopping at the correct position along the station platform.[8] Test running on the Yamanote Line resumed from 27 December.[9] The train returned to revenue service on the Yamanote Line on 7 March 2016.[10]

In June 2016, JR East announced its official plans for the introduction of a fleet of 49 full-production sets (539 vehicles) between spring 2017 and spring 2020.[11] Most units would be built as 10-car sets and use converted former E231-500 series SaHa E231-4600 cars, while two units would be built as 11-car sets.[11] The first full-production standard set, 02, was delivered from the J-TREC factory in Niigata in April 2017.[12] This entered service on 22 May 2017.[13]

In April 2018, JR East announced the replacement of the existing E217 series on the Sōbu Line (Rapid) and Yokosuka Line by new E235 series trains beginning in fiscal 2020. The fleet will consist of 51 11-car trains and 46 four-car trains, for a total of 745 cars to be newly constructed.[14] The first train entered service on 21 December 2020.[15]

E235-0 series

E235-0 series
Yamanote Line 11-car E235-0 series set 04 in August 2022
Built atAkiha-ku, Niigata
ReplacedE231-500 series
Constructed2015–2019[lower-alpha 2]
Entered service20 November 2015
Number built550 vehicles (50 sets)[lower-alpha 2]
Number in service550 vehicles (50 sets)
Formation11 cars per trainset
Fleet numbers01–50
Capacity1628 passengers
OperatorsJR East
DepotsTokyo
Lines servedJY Yamanote Line
Specifications
Train length220 m (721 ft 9 in) (including couplers)
Doors4 pairs per side
Traction system
UIC classification2′2′+2′2′+Bo′Bo′+Bo′Bo′+2′2′+Bo′Bo′+Bo′Bo′+2′2′+Bo′Bo′+Bo′Bo′+2′2′
The pre-series set, 01, on a test run in April 2015

A total of 50 11-car trains were delivered for use on the Yamanote Line, letting the E231-500 series in use since 2002 being transferred to the Chūō–Sōbu Line.[16] A pre-series train was delivered in March 2015, first entering revenue service from 30 November 2015, but then taken out of service for three months before re-entering service in March 2016.

The pre-series set (01) was converted to the full production standard by 14 March 2018.[17]

Formations

As of 17 December 2019, 50 11-car sets (01–50) are based at Tokyo General Rolling Stock Centre and formed with six motored ("M") cars and five non-powered trailer ("T") cars.[17] All sets except sets 04 and 05 have SaHa E235-4600 cars (Car 10), which are modified from former E231-500 series SaHa E231-4600 cars.[17]

 
← Counterclockwise (Inner loop)
Clockwise (Outer loop) →
 
Car No.1110987654321
Designation TcTM1M2T'M1M2TM1M2Tc'
Numbering (Sets 01–03, 06–50) KuHa E235SaHa E235-4600MoHa E235MoHa E234SaHa E234MoHa E235MoHa E234SaHa E235MoHa E235MoHa E234KuHa E234
Numbering (Sets 04–05) SaHa E235-500
Capacity (total/seated) 142/39160/48160/51142/39
  • On the pre-series set (01), car 3 has one PS33D single-arm pantograph, car 6 has PS33H and PS36A single-arm pantographs (one used as a backup), and car 9 has one PS33H single-arm pantograph.[1]
  • On the remaining production sets (02-50), cars 3 and 9 each have one PS33H single-arm pantograph and car 6 has two PS33H single-arm pantographs (one used as a backup).[18]
  • All cars have an accessible/priority "free space".[17]
  • Car 4 is designated as a mildly air-conditioned car.[17]

Exterior

Interior

Passenger accommodation consists of longitudinal bench seating throughout, with an individual seat width of 460 mm (18.1 in) per person, compared to 450 mm (17.7 in) for the earlier E231-500 series.[1] Priority seating is provided at both ends of each car (except in end cars), and a space for wheelchairs or strollers is provided at one end of each car.[1] LED lighting is used throughout.[1] The initial plan was for paper advertisements inside the cars to be completely abolished, replaced by 18 LCD colour advertising screens in each car,[1] but following feedback from advertising companies and users, the first train to enter service will include traditional paper advertisements in addition to the LCD screens.[19]

The full-production sets (02 onward) incorporate a number of design changes. Whereas in the pre-series set 01, the luggage rack height was generally 1,678 mm (5 ft 6.1 in) with a height of 1,628 mm (5 ft 4.1 in) in the end cars and in priority seating areas, this is standardized as 1,628 mm (5 ft 4.1 in) throughout from set 02 onward.[13] The handrails next to seats in the full-production sets have an embossed surface compared with the polished metal surface used in the pre-series set.[13]

SaHa E235-500/-4600 series cars

The car on the right is a SaHa E235-4600 series car, modified from a SaHa E231-4600 series car. The rain gutter on the right car is of an older design and protrudes from the side of the car, unlike the one of the left.

The car 10 position on the E235-0 series trains has a slightly different door spacing, to more closely align with the driver cab of 10-car Keihin–Tōhoku Line trains, which sometimes have to share platforms with Yamanote Line trains during track maintenance. In 48 of the 50 sets, car 10 is a SaHa E235-4600 series car, and externally appear different from the other cars. These cars were originally built in 2010–2011 as SaHa E231-4600 series cars (and were built to E233 series standards), and were modified to E235 specifications when the E231-500 series was withdrawn from the Yamanote Line. The remaining two sets, sets 4 and 5, have a new build SaHa E235-500 series car in the car 10 position, in order to allow for a more reasonable 90-day timeframe for modification works on the remaining cars (as it would have been difficult to perform the modifications in 45 days).[20]

Special liveries

In October 2022, set 15 was repainted into an all-over black livery to commemorate the 150th anniversary of the opening of the railway. The Netflix logo also appears on the sides of the carriages. It will remain with this livery until 31 December 2022.[21]

E235-1000 series

E235-1000 series
A 15-car E235-1000 series consist with set J-10 leading, June 2021
Built at
ReplacedE217 series
Constructed2020–present
Entered service21 December 2020
Number under construction513 vehicles
Number built232 vehicles (as of 13 May 2022 (2022-05-13))[22]
Number in service228 vehicles (28 sets) (as of 28 April 2022 (2022-04-28))
Formation11/4 cars per trainset
Fleet numbers
  • F-01– (11-car sets)
  • J-01– (4-car sets)
OperatorsJR East
DepotsKamakura
Lines served
Specifications
Train length
  • 220 m (721 ft 9 in) (11-car sets, including couplers)
  • 80 m (262 ft 6 in) (4-car sets, including couplers)
Doors
  • 4 pairs per side
  • 2 doors per side (Green cars)
Traction systemMitsubishi SC104A SiC-MOSFET–VVVF
UIC classification
  • 2′2′+Bo′Bo′+Bo′Bo′+2′2′+Bo′Bo′+Bo′Bo′+2′2′+2′2′+Bo′Bo′+Bo′Bo′+2′2′ (11-car sets)
  • 2′2′+Bo′Bo′+Bo′Bo′+2′2′ (4-car sets)

The E235-1000 series fleet will consist of a total of 745 cars (consisting of 51 11-car trains and 46 four-car trains) for use on the Sōbu Line (Rapid) and Yokosuka Line, replacing the E217 series in use since 1994.[14] The fleet was introduced into service on 21 December 2020.[15]

On 21 April 2020, the Green cars of the first set were completed at the J-TREC factory in Kanazawa-ku, Yokohama and transported to the J-TREC factory in Niigata to be joined with standard cars.[23] On 3 June 2020, the first 11-car set was completed at Niigata;[24] it was delivered to Kamakura Depot on 8 June 2020.[25] The first 4-car set was completed at Niigata on 16 June 2020 and was delivered on 19 June 2020.[26]

Formations

11-car sets

As of 28 April 2022, 16 11-car sets (F-01–F-16) are based at Kamakura Depot and formed with six motored ("M") cars and five non-powered trailer ("T") cars.[22]

 
← Kimitsu, Narita Airport
Kurihama →
 
 
Car No.1110987654321
Designation TcM1M2TM1M2TsdTsd'M1M2Tc'
Numbering KuHa E235-1000MoHa E235-1000MoHa E234-1000SaHa E235-1000MoHa E235-1200MoHa E234-1200SaRo E235-1000SaRo E234-1000MoHa E235-1300MoHa E234-1300KuHa E234-1000
  • Cars 7 and 10 each have one single-arm pantograph and car 3 has two single-arm pantographs (one used as a backup).
  • Cars 1-3 and 6-11 have an accessible/priority "free space".
  • Cars 1, 5, and 6 each have a toilet (universal design in cars 1 and 6).
  • Car 8 is designated as a mildly air-conditioned car.
  • Cars 4 and 5 are bilevel Green Cars.

4-car sets

As of 14 June 2021, 13 four-car sets (J-01–J-13) are based at Kamakura Depot and formed with two motored ("M") cars and two non-powered trailer ("T") cars.[22]

 
← Kimitsu
 
Kurihama →
 
 
Car No.+4+3+2+1
Designation TcM1M2Tc'
Numbering KuHa E235-1100MoHa E235-1100MoHa E234-1100KuHa E234-1100
  • Car +3 has two single-arm pantographs (one used as a backup).
  • All cars have an accessible/priority "free space".
  • Car +1 has a universal design toilet.

Interior

As with their counterparts on the Yamanote Line, passenger accommodation for ordinary cars consists of longitudinal bench seating throughout.[27] A space for wheelchairs or strollers is provided at one end of each car, except on Green cars. The seats are 10 mm (0.4 in) wider than those seen in earlier E217 series cars. The information screens measure 21 inches, and display information in multiple languages. LED lighting is used throughout.[28] Surveillance cameras are also equipped in order to increase safety.[29]

Green car accommodation consists of reclining, 2+2 abreast seating throughout. Also included are power outlets, which are equipped under the seats' armrests.[29]

Notes

  1. ↑ Toshiba for MoHa E234-2, E235-3, and E234-4.
  2. 1 2 Including 48 SaHa E235-4600 series cars originally constructed in 2010–2011 as SaHa E231-4600 series

References

  1. 1 2 3 4 5 6 Mizutani, Keisuke (July 2015). E235系一般形直流電車 [E235 series general-purpose DC EMU]. Japan Railfan Magazine (in Japanese). Vol. 55, no. 651. Japan: Koyusha Co., Ltd. pp. 92–100.
  2. ↑ "news 2014.07.03" (in Japanese). Japan: Ken Okuyama Design. 3 July 2014. Retrieved 4 July 2014.
  3. ↑ Japan Railway Journal (episode 9). Japan Railway Journal. NHK World-Japan. 2015. Event occurs at 8:58.
  4. ↑ 2017年ブルーリボン賞・ローレル賞決定 [2017 Blue Ribbon Award and Laurel Prize recipients decided]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 25 May 2017. Retrieved 16 June 2022.
  5. ↑ Saito, Masatoshi (2 July 2014). ＪＲ東:山手線に新型電車「Ｅ２３５系」 来秋から導入 [JR East to introduced new E235 series trains on Yamanote Line from next autumn]. Mainichi Shimbun (in Japanese). Japan: The Mainichi Newspapers. Archived from the original on 2 January 2015. Retrieved 8 June 2016.
  6. ↑ E235系量産先行車配給輸送 [E235 series pre-series set delivered]. RM News (in Japanese). Japan: Neko Publishing Co., Ltd. 26 March 2015. Archived from the original on 2 April 2015. Retrieved 8 June 2016.
  7. ↑ E235系が山手線で試運転 [E235 series test run on Yamanote Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 31 March 2015. Retrieved 31 March 2015.
  8. ↑ 山手線に次世代通勤電車 Ｅ２３５系トラブル相次ぐ [Problems with E235 series "next-generation commuter train" on Yamanote Line]. Sponichi Annex (in Japanese). Japan: Sports Nippon Newspapers. 30 November 2015. Archived from the original on 8 December 2015. Retrieved 8 June 2016.
  9. ↑ E235系が山手線で試運転 [E235 series test run on Yamanote Line]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 8 January 2016. Retrieved 8 January 2016.
  10. ↑ 山手線 新型車両が３か月ぶりに運転再開 [New Yamanote Line train re-enters service after 3 months]. NHK News Web (in Japanese). Japan: NHK. 7 March 2016. Archived from the original on 8 March 2016. Retrieved 7 March 2016.
  11. 1 2 山手線，2020年春ごろまでにE235系量産車539両を導入 [539 E235 series full-production series cars to be introduced on Yamanote Line by around spring 2020]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 8 June 2016. Archived from the original on 8 June 2016. Retrieved 8 June 2016.
  12. ↑ E235系02編成 配給輸送 [E235 series set 02 delivered]. Tetsudo Hobidas (in Japanese). Japan: Neko Publishing. 18 April 2017. Archived from the original on 18 April 2017. Retrieved 18 April 2017.
  13. 1 2 3 Kosano, Kagetoshi (23 May 2017). 山手線新型｢E235系｣量産車は何が違うのか [How do the new Yamanote Line E235 series full-production trains differ?]. Toyo Keizai Online (in Japanese). Japan: Toyo Keizai Inc. Archived from the original on 27 May 2017. Retrieved 27 May 2017.
  14. 1 2 Daisuke, Kousaku (4 September 2018). JR東日本E235系、横須賀線・総武快速線へ車両新造 - 2020年度落成 [JR East E235 series for Yokosuka line and Sōbu Rapid Line to be completed in 2020] (in Japanese). Japan: MyNavi Corporation. Retrieved 5 September 2018.
  15. 1 2 Tsuchiya, Takeyuki (11 January 2021). JR東日本E235系1000番代、横須賀線・総武快速線の新型車両に乗る [Riding JR East's brand-new E235-1000 series train model on the Yokosuka Line/Sobu Rapid Line]. Mynavi News (in Japanese). Japan: Mynavi Corporation. Retrieved 16 June 2022.
  16. ↑ "JR東日本，E235系量産先行車を新造" [JR East to build new E235 series prototype train]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 2 July 2014. Retrieved 2 July 2014.
  17. 1 2 3 4 5 JR電車編成表 2019冬 [JR EMU Formations - Winter 2019]. Japan: Kotsu Shimbunsha. 14 November 2018. pp. 49, 62–63, 72, 74–77, 80–81, 96–99. ISBN 978-4-330-93218-7.
  18. ↑ Amanuma, Hideaki (September 2017). E235系量産車 [E235 series full-production trains]. Japan Railfan Magazine (in Japanese). Vol. 57, no. 677. Japan: Koyusha Co., Ltd. pp. 48–50.
  19. ↑ 山手線の新型車両「E235系」、11月30日から運行 中吊り広告は存続 [New Yamanote Line E235 series trains to enter service from 30 November - Paper adverts will be retained]. ITmedia Business Online (in Japanese). Japan: ITmedia Inc. 14 October 2015. Archived from the original on 5 December 2015. Retrieved 8 June 2016.
  20. ↑ "E235系投入と玉突き転配" [E235 series introduction and transfer]. 28 October 2014. Retrieved 25 December 2020.
  21. ↑ "鉄道開業時の1号機関車をイメージした「黒い山手線」の運転開始". Japan Railfan Magazine. Retrieved 9 October 2022.
  22. 1 2 3 "E235系鎌倉車両センター本所編成表（最新版）" [E235 series Kamakura Depot formation list (latest)]. Retrieved 25 June 2021.
  23. ↑ "横須賀・総武快速線の新型E235系グリーン車が完成 横浜から新潟へ、普通車と合流" [Yokosuka / Sobu Rapid Line E235 Green Cars completed, transported from Yokohama to Niigata for combination with standard cars]. 21 April 2020. Retrieved 22 April 2020.
  24. ↑ "【JR東】E235系1000番台鎌倉車第1編成(F01編成)公式試運転" [[JR East] E235-1000 series Kamakura depot first set (set F01) official test run]. 3 June 2020. Retrieved 3 June 2020.
  25. ↑ "クラF-01編成新津出場" [Kamakura Depot set F-01 delivered from Niitsu Factory]. 8 June 2020. Retrieved 8 June 2020.
  26. ↑ "E235系1000番台J-01編成が配給輸送される" [E235-1000 set J-01 was transported]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 20 June 2020. Retrieved 1 February 2023.
  27. ↑ "横須賀・総武快速線用車両の新造について" (PDF). jreast.co.jp (in Japanese). 東日本旅客鉄道. 4 September 2018. Retrieved 3 June 2020.
  28. ↑ JR東日本「E235系1000番台」公開、グリーン車に高級感 - 写真98枚 [JR East unveils "E235-1000 series", featuring luxury Green cars - 98 photos]. Mynavi News (in Japanese). Japan: Mynavi Corporation. 12 December 2020. Retrieved 16 June 2022.
  29. 1 2 JR東日本、横須賀線・総武快速線E235系を報道公開 - 12/21デビュー [JR East announces Yokosuka Line/Sobu Rapid Line E235-1000 series - 21 December debut]. Mynavi News (in Japanese). Japan: Mynavi Corporation. 11 December 2020. Retrieved 16 June 2022.
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