| 821 series | |
| Service: | March 2019 - Present |
| Manufacturer: | Hitachi |
| Factory: | Kudamatsu, Yamaguchi |
| Yearconstruction: | 2018– |
| Yearservice: | 16 March 2019 |
| Numberbuilt: | 21 vehicles (7 sets) |
| Formation: | 3 cars per trainset |
| Fleetnumbers: | U001- |
| Lines: | Kagoshima Main Line |
| Doors: | 3 pairs per side |
| Maxspeed: | 120round=5NaNround=5 (design speed) |
| Traction: | Variable frequency (SiC-MOSFET) |
| Electricsystem: | (overhead catenary) |
| Collectionmethod: | Pantograph |
| Multipleworking: | 811 series |
The is an AC electric multiple unit (EMU) train type operated by 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.[1] There are currently 7 three-car trains in service.
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.[3]
The trains first entered revenue service on 16 March 2019 on the Kagoshima Main Line.[4]