Sotetsu 20000 and 21000 series
Sagami-Railway-Series20000-20102F.jpg
Set 20102 in May 2021
In serviceFebruary 2018–present
ManufacturerHitachi
Built atKudamatsu, Yamaguchi
Family nameA-train
Replaced7000 series
Constructed2017–2021
Entered service11 February 2018 (20000 series)
6 September 2021 (21000 series)
Number built
  • 20000 series: 70 vehicles (7 sets)
  • 21000 series: 32 vehicles (4 sets)
Number in service
  • 20000 series: 70 vehicles (7 sets)
  • 21000 series: 24 vehicles (3 sets)
Formation
  • 10 cars per trainset (20000 series)
  • 8 cars per trainset (21000 series)
Fleet numbers
  • 20101–20107 (10-car sets)
  • 21101–21104 (8-car sets)
Operator(s)Sotetsu
Line(s) servedSotetsu Main Line
Sotetsu Izumino Line
Future lines:
Sōtetsu Shin-Yokohama Line
Tokyu Shin-Yokohama Line
Tokyu Meguro Line
Tokyu Toyoko Line
Tokyo Metro Namboku Line
Saitama Rapid Railway Line
Toei Mita Line
Specifications
Car body constructionAluminium alloy
Car length
  • 20.47 m (67 ft 2 in) (end cars)
  • 20 m (65 ft 7 in) (intermediate cars)
Width2,787 mm (9 ft 1.7 in)
Height4,065 mm (13 ft 4.0 in)
Floor height1.13 m (3 ft 8 in)
Doors4 pairs per side
Maximum speed120 km/h (75 mph) (design speed)
Traction systemSiC-SBD hybrid 2-level Si-IGBTVVVF (Hitachi), type VFI-HR1421G
Traction motors190 kW (250 hp) HS32536-04RB fully-enclosed 3-phase AC induction motor (Hitachi)
Electric system(s)1,500 V DC (nominal) from overhead catenary
Current collector(s)Toyo Denki PT-7103G single-arm pantograph
Track gauge1,067 mm (3 ft 6 in)

The Sotetsu 20000 series (相鉄20000系) is an electric multiple unit (EMU) commuter train type operated by the private railway operator Sagami Railway ("Sotetsu") in Japan in the Tokyo area since February 2018. Ultimately intended to be used on through-running services between Sotetsu and Tokyu Corporation lines commencing in late fiscal 2022, the first train entered revenue service on 11 February 2018, replacing a 7000 series set.[1]

Eight-car sets designated as 21000 series were announced in April 2021,[2] the first of which entered service in September 2021.[3]

Design

The fleet of ten-car 20000 series trainsets is being built by Hitachi at its Kasado Factory in Kudamatsu, Yamaguchi.[1] Externally, the trains carry the "Yokohama Navy Blue" corporate livery introduced for refurbished 9000 series trains.[1]

Formation

The trains are formed as ten-car sets, as follows, with five motored ("M") cars and five non-powered trailer ("T") cars, and car 1 at the Yokohama end.[4]

Car No. 1 2 3 4 5 6 7 8 9 10
Designation Tc2 M1 T2 M2 M3 T2 M4 T3 M5 Tc1
Numbering 2010x 2020x 2030x 2040x 2050x 2060x 20710x 2080x 2090x 2000x
Weight (t) 29.9 31.7 29.8 31.1 31.2 26.9 31.7 29.1 31.1 30.0
Capacity (seated/total) 45/133 51/144 51/143 51/143 51/143 51/143 51/143 51/143 51/143 45/133

Interior

Passenger accommodation consists of longitudinal bench seating with grey moquette seat covers.[5] Each car includes a space for wheelchairs and pushchairs.[5]

The interior with lighting adjusted to a warmer hue (3000 K) in late evening
The interior with lighting adjusted to a warmer hue (3000 K) in late evening

The colour temperature of the interior LED lighting is adjusted automatically according to time of day and season as follows (hues shown are illustrative only).[4]

Season Time of day Colour temperature [K] Intensity [%]
Spring
(1 April - 30 June)
Early morning 02:01:00 - 06:59:59   4400 90
Morning peak 07:00:00 - 09:59:59   5000 90
Daytime 10:00:00 - 15:59:59   4400 90
Evening 16:00:00 - 17:59:59   4400 90
Night 18:00:00 - 02:00:59   3000 100
Summer
(1 July - 30 September)
Early morning 02:01:00 - 06:59:59   5000 90
Morning peak 07:00:00 - 09:59:59   5000 90
Daytime 10:00:00 - 15:59:59   5000 90
Evening 16:00:00 - 17:59:59   4400 90
Night 18:00:00 - 02:00:59   3000 100
Autumn
(1 October - 31 December)
Early morning 02:01:00 - 06:59:59   4400 90
Morning peak 07:00:00 - 09:59:59   4400 90
Daytime 10:00:00 - 15:59:59   4400 90
Evening 16:00:00 - 17:59:59   3800 100
Night 18:00:00 - 02:00:59   3000 100
Winter
(1 January - 31 March)
Early morning 02:01:00 - 06:59:59   3300 100
Morning peak 07:00:00 - 09:59:59   3800 100
Daytime 10:00:00 - 15:59:59   4400 90
Evening 16:00:00 - 17:59:59   4400 90
Night 18:00:00 - 02:00:59   3000 100

History

The first set on delivery in July 2017
The first set on delivery in July 2017

Details of the new trains were officially announced in June 2017.[5] The first train set was delivered from the Hitachi factory in Kudamatsu, Yamaguchi, in late July 2017.[6]

Originally scheduled to enter revenue service in December 2017, scheduled service entry was subsequently postponed until 11 February 2018.[7][8]

21000 series

An order of a short version of the 20000 series was announced on 28 April 2021. These four eight-car sets will be designated as 21000 series, and are to be operated through to lines of Tokyu Corporation.[2] The first 21000 series set entered service on 6 September 2021.[3][9]

References

  1. ^ a b c 都心直通用新型車両「20000系」を導入 [New 20000 series trains to be introduced on Tokyo through-running services] (PDF). News letter (in Japanese). Japan: Sagami Railway. 5 June 2017. Retrieved 5 June 2017.((cite web)): CS1 maint: url-status (link)
  2. ^ a b "Sotetsu orders Hitachi EMUs to work Tokyo through services". railwaygazette.com. DVV Media International. 10 May 2021. Retrieved 1 June 2021.
  3. ^ a b "Sotetsu Series 21000 EMU enters service". railwaygazette.com. DVV Media International. 9 September 2021. Retrieved 16 September 2021.
  4. ^ a b 相模鉄道20000系 主要諸元表 [Sagami Railway 20000 series main specifications]. Tetsudo Daiya Joho Magazine (in Japanese). Vol. 47, no. 407. Japan: Kotsu Shimbun. March 2018. p. 51.
  5. ^ a b c Ueshin, Daisuke (5 June 2017). 相鉄20000系、新型車両12月デビュー! 日立製作所が製造、今年度は1編成導入 [New Sotetsu 20000 series trains to debut in December! 1st set to be introduced this year, built by Hitachi]. Mynavi News (in Japanese). Japan. Archived from the original on 5 June 2017. Retrieved 5 June 2017.
  6. ^ 相鉄20000系が甲種輸送される [Sotetsu 20000 series delivered]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 1 August 2017. Archived from the original on 1 August 2017. Retrieved 1 August 2017.
  7. ^ 相鉄20000系,2月11日から営業運転を開始 [Sotetsu 20000 series to enter revenue service from 11 February]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 22 December 2017. Archived from the original on 22 December 2017. Retrieved 22 December 2017.
  8. ^ 相鉄20000系が営業運転を開始 [Sotetsu 20000 series enters revenue service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 12 February 2018. Archived from the original on 12 February 2018. Retrieved 12 February 2018.
  9. ^ "相模鉄道の新型21000系が運行開始 東急直通見据え 兄貴分20000系と何が違う?". trafficnews.jp (in Japanese). Mediavague Co., ltd. 7 September 2021. Archived from the original on 16 September 2021. Retrieved 16 September 2021.