| HXN3 JT56ACe 和谐内3 | |
| Powertype: | Diesel-electric |
| Primemover: | EMD H-Engine 16-265H |
| Cylindercount: | V16 |
| Builder: | EMD (USA), Dalian Locomotive Works |
| Buildmodel: | JT56ACe |
| Builddate: | 2008－2014 |
| Totalproduction: | 334 |
| Uicclass: | Co′Co′ |
| Wheeldiameter: | 10501NaN1 |
| Minimumcurve: | 250abbr=onNaNabbr=on |
| Axleload: | 25t |
| Locoweight: | 150t |
| Enginetype: | Four-stroke diesel |
| Transmission: | Electric（AC—DC—AC） |
| Maxspeed: | 120km/h |
| Tractiveeffort: | 620kN (starting) 598kN@24km/h (continuous) |
| Poweroutput: | 6300hp 5550hp @ wheel |
| Fleetnumbers: | HXN30001-HXN30300 HXN30301-HXN30330 HXN37001-HXN37004 |
| Operator: | China Railway |
| Locale: | China |
The HXN3 (EMD classification JT56ACe) is a 6000 horsepower (4.5 MW) diesel-electric locomotive designed by Electro-Motive Diesel in the United States for export to China. All JT56ACe locomotives use AC traction motor technology and use the EMD H-Engine as their prime mover. The locomotives are capable of meeting the EPA's Tier 2 emissions regulations.
In September 2005, the People's Republic of China announced an order for 300 JT56ACe locomotives. The locomotives were jointly manufactured by EMD and China's own Dalian Locomotive Works.[1] They are dual cab locomotives.
Number 0301 - 0330 are single cab locomotives. They are coupled back to back and used on Tibet line.
Number 7001 - 7004 are delivered to Shenhua Mining Group.
The locomotive has been deployed to Qinghai–Tibet railway in 2018.[2]