Seibu 401 series

The Seibu 401 series (西武401系) is an electric multiple unit (EMU) train type operated by the private railway operator Seibu Railway on commuter services in the Tokyo area of Japan from 1978 to 1997.

Seibu 401/411 series
A Jōshin 150 series train converted from Seibu 401 series
In serviceSeibu Railway
1968–1997
Jōshin Electric Railway
1992–2019
Ohmi Railway
1997–present (820 series)
1998–present (800 series)
1998–2019 (700 series)
ManufacturerSeibu Tokorozawa Railway Works
Entered service1968 (Seibu Railway as 411 series)
1990 (Sangi Railway)
1992 (Jōshin Dentetsu Jōshin Line)
1997 (Ohmi Railway 820 series)
1998 (Ohmi Railway 700 and 800 series)
Refurbished1978
Number built38 cars
Number scrapped2 cars (Ohmi Railway 700 series)
SuccessorJōshin 700 series
Formation2 cars per trainset
Operator(s)Seibu Railway
Sangi Railway
Jōshin Electric Railway
Ohmi Railway
Line(s) servedSeibu Shinjuku Line, Seibu Tamagawa Line, Sangi Line, Jōshin Dentetsu Jōshin Line
Specifications
Car body constructionSteel
Car length20 m (65 ft 7 in)
Doors3 pairs per side
Maximum speed100 km/h (62 mph)
Traction systemResistor control
Traction motors411 series:
MT15E
401 series:
HS-836-Frb
HS-836-Krb
TDK-8090-A
Power output120kW
Electric system(s)1,500 V DC overhead catenary
Current collector(s)Pantograph
Safety system(s)Seibu ATS
Multiple workingAll Seibu 3-door trains
Track gauge1,067 mm (3 ft 6 in)

Seibu Railway
401 series trains were painted in Seibu All Yellow livery

The first 401 series train was constructed in 1968, then known as 411 series. At the time before conversion. 411 series cars had the MT15E traction motors, in later years Seibu converted all 411 series cars to Seibu 401 series. MT15E traction motors were replaced with MT46-based Hitachi resistor-controlled motors. The last remaining trains were withdrawn in 1997.

Sangi Railway
A Sangi Railway 101 series train

401 series train sets were transferred to Sangi Railway in 1990. Among other Seibu EMUs sent to that railway, it's the only 2-car EMU series on Sangi Railway line.

Ohmi Railway
  • Ohmi 800/820 series - entered service in 1997 (820 series) and 1998 (800 series)
  • Ohmi 700 series - entered service in June 1998;[1] withdrawn in 2019.

The 800 and 820 series conversion included modifications of the trains, so that they won't make contact with the station platforms.[2]

  • Modified inner car ends on a 800 series set
    Modified inner car ends on a 800 series set
  • A 800 series train in May 2007
    A 800 series train in May 2007
  • A 700 series train in May 2007
    A 700 series train in May 2007
  • Ohmi Railway set 822F in January 2017
    Ohmi Railway set 822F in January 2017

References
  1. "700形電車「あかね号」5月引退へ 塗装と愛称は900形に継承 近江鉄道". trafficnews.jp (in Japanese). Mediavague Co., ltd. 13 February 2019. Archived from the original on 24 September 2022. Retrieved 17 April 2023.
  2. "車両の角「面取り」なぜ　車体の長さに秘密". sankei.com (in Japanese). The Sankei Shimbun. 13 October 2019. Archived from the original on 29 November 2022. Retrieved 17 April 2023.
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