821 series

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821 series
821 series U001 delivery Kudamatsu Station 20180220 (2).jpg
Sets U001 and U002 on delivery in February 2018
In serviceMarch 2019 – Present
Built atKudamatsu, Yamaguchi
Entered service16 March 2019
Number built6 vehicles (2 sets)
Formation3 cars per trainset
Fleet numbersU001-
Operator(s)JR Kyushu
Doors3 pairs per side
Maximum speed120 km/h (75 mph) (design speed)
Traction systemVariable frequency (SiC-MOSFET)
Electric system(s)20 kV AC 60 Hz
Current collection methodOverhead catenary
Track gauge1,067 mm (3 ft 6 in)

The 821 series (821系) is an AC electric multiple unit (EMU) train type on order by Kyushu Railway Company (JR Kyushu) in Japan. Two three-car trains were delivered in February 2018 for testing in preparation for full production and entry into revenue service.[1]


The 821 series trains are formed as three-car sets as follows.[2]

Designation Mc T Tc
Numbering KuMoHa 821 SaHa 822 KuHa 821


Details of the trains on order were officially announced by JR Kyushu in January 2018.[1] Two three-car trains were delivered in February 2018 from the Hitachi factory in Kudamatsu, Yamaguchi.[2]


  1. ^ a b JR九州、次世代近郊型交流電車「821系」導入へ [JR Kyushu to introduce new-generation 821 series AC suburban trains]. tetsudo-shimbun.com (in Japanese). Japan: Tetsudo Shimbunsha. 26 January 2018. Archived from the original on 26 January 2018. Retrieved 26 January 2018.
  2. ^ a b 821系が甲種輸送される [821 series delivered]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 21 February 2018. Archived from the original on 21 February 2018. Retrieved 21 February 2018.

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