# 821 series > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/821_series > Markdown URL: https://mediated.wiki/source/821_series.md > Source: https://en.wikipedia.org/wiki/821_series > Source revision: 1338128281 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Japanese electric multiple unit train type 821 series Set U002 in June 2019 In service March 2019 – Present Manufacturer Hitachi Built at Kudamatsu, Yamaguchi Constructed 2018–2022 Entered service 16 March 2019 Number built 21 vehicles (7 sets) Formation 3 cars per trainset Fleet numbers U001- Operator JR Kyushu Line served Kagoshima Main Line Specifications Doors 3 pairs per side Maximum speed 120 km/h (75 mph) (design speed) Traction system Variable frequency (SiC-MOSFET) Electric system 20 kV 60 Hz AC (overhead catenary) Current collection Pantograph Multiple working 811 series[1] Track gauge 1,067 mm (3 ft 6 in) The **821 series** (821系) is an AC [electric multiple unit](/source/Electric_multiple_unit) (EMU) train type operated by [Kyushu Railway Company](/source/Kyushu_Railway_Company) (JR Kyushu) in Japan since March 2019. Two three-car trains were delivered in February 2018 for testing in preparation for full production and entry into revenue service.[2] There are currently 7 three-car trains in service. ## Formation The 821 series trains are formed as three-car sets as follows.[3][4] Designation Mc T Tc Numbering KuMoHa 821 SaHa 822 KuHa 821 - The KuMoHa 821 car is equipped with one single-arm [pantograph](/source/Pantograph_(transport)).[4] - The pantograph end of driving car KuMoHa 821-2 ## History Sets U001 and U002 on delivery in February 2018 Details of the trains on order were officially announced by JR Kyushu in January 2018.[2] Two three-car trains were delivered in February 2018 from the [Hitachi](/source/Hitachi) factory in [Kudamatsu, Yamaguchi](/source/Kudamatsu%2C_Yamaguchi).[3] The trains first entered revenue service on 16 March 2019 on the [Kagoshima Main Line](/source/Kagoshima_Main_Line).[1] ## References 1. ^ [***a***](#cite_ref-railfan_2019-03-17_1-0) [***b***](#cite_ref-railfan_2019-03-17_1-1) [821系が営業運転を開始](https://railf.jp/news/2019/03/17/205800.html) [821 series begins commercial operation]. *Japan Railfan Magazine Online* (in Japanese). Japan: Koyusha Co., Ltd. 17 March 2019. [Archived](https://web.archive.org/web/20211121172933/https://railf.jp/news/2019/03/17/205800.html) from the original on 21 November 2021. Retrieved 18 January 2023. 1. ^ [***a***](#cite_ref-tetsudoshimbun20180126_2-0) [***b***](#cite_ref-tetsudoshimbun20180126_2-1) [JR九州、次世代近郊型交流電車「821系」導入へ](http://tetsudo-shimbun.com/headline/entry-1291.html) [JR Kyushu to introduce new-generation 821 series AC suburban trains]. *tetsudo-shimbun.com* (in Japanese). Japan: Tetsudo Shimbunsha. 26 January 2018. [Archived](https://web.archive.org/web/20180126085607/http://tetsudo-shimbun.com/headline/entry-1291.html) from the original on 26 January 2018. Retrieved 26 January 2018. 1. ^ [***a***](#cite_ref-railfan20180221_3-0) [***b***](#cite_ref-railfan20180221_3-1) [821系が甲種輸送される](https://railf.jp/news/2018/02/21/173000.html) [821 series delivered]. *Japan Railfan Magazine Online* (in Japanese). Japan: Koyusha Co., Ltd. 21 February 2018. [Archived](https://web.archive.org/web/20180221093406/https://railf.jp/news/2018/02/21/173000.html) from the original on 21 February 2018. Retrieved 21 February 2018. 1. ^ [***a***](#cite_ref-railfan695_4-0) [***b***](#cite_ref-railfan695_4-1) Arie, Kenta; Yasumori, Keitaro (March 2019). JR九州 821系近郊形交流電車 [JR Kyushu 821 series AC suburban train]. *[Japan Railfan Magazine](/source/Japan_Railfan_Magazine)* (in Japanese). Vol. 59, no. 695. Japan: Koyusha Co., Ltd. pp. 54–58. ## External links Wikimedia Commons has media related to [JR Kyushu 821](https://commons.wikimedia.org/wiki/Category:JR_Kyushu_821). - [JR Kyushu press release issued on 26 January 2018](http://www.jrkyushu.co.jp/news/__icsFiles/afieldfile/2018/01/26/180126_001821_1.pdf) (in Japanese) v t e Multiple units of Kyushu Railway Company Current / active AC EMUs (Shinkansen) 800 N700 N700S DC EMUs 103 303 305 AC/DC EMUs 415 AC EMUs 713 783 787 811 813 815 817 821 883 885 BEC819 DMUs KiHa 31 KiHa 40 KiHa 66 KiHa 71 KiHa 72 KiHa 125 KiHa 183 KiHa 185 KiHa 200 Hybrid DEMUs YC1 Retired / withdrawn AC/DC EMUs 421 423 455 457 475 485 AC EMUs 715 717 DMUs KiHa 20 KiHa 35 KiHa 45 KiHa 52 KiHa 58 KiHa 65 Planned DC EMUs 307 AC/DC EMUs 501 --- Adapted from the Wikipedia article [821 series](https://en.wikipedia.org/wiki/821_series) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/821_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.