| SS4 韶山4 | |
| Powertype: | Electric |
| Builder: | Datong Electric Locomotive Works Zhuzhou Electric Locomotive Works Ziyang Locomotive Works Dalian locomotive works |
| Buildmodel: | SS4 |
| Builddate: | 1985–2006 |
| Totalproduction: | 1577 |
| Uicclass: | Bo′Bo′+Bo′Bo′ |
| Wheelbase: | 4300mm |
| Length: | 32832mm (between coupler centers) |
| Width: | 3100mm |
| Height: | 4040mm |
| Axleload: | 23t |
| Electricsystem: | 25 kV AC Catenary |
| Collectionmethod: | Pantograph |
| Transmission: | AC – DC |
| Maxspeed: | 100km/h |
| Poweroutput: | 6400kW |
| Tractiveeffort: | 628kN (starting) 436.5kN (continuous) |
The Shaoshan 4 is a type of electric locomotive used on the People's Republic of China's national railway system. This locomotive was built by the Zhuzhou Electric Locomotive Works. The power supply was industrial-frequency single-phase AC, and the axle arrangement Bo′Bo′+Bo′Bo′.[1]
In 1993, Zhuzhou Electric Locomotive Works produced SS4G (Chinese: 韶4改). SS4G are very similar to standard SS4, apart from an improved electrical technology.[2]
SS4 Electric Locomotive is an eight shaft fixing reconnection heavy freight electric locomotive which based on two four-axle locomotives connected. One unit, SS4-0043, was damaged in a tunnel during the 2008 Sichuan earthquake.
SS4s have been manufactured by several companies: