SS8 electric locomotive, one of key scientific and technical projects in The Eighth Plan of nation, is successfully researched by Zhuzhou Electric Locomotive Works in 1994, which filled up the blank of express passenger electric locomotive of China. At present, with development of Chinese electric rail line, SS8 has become the main electric locomotive used in nation's express passenger trains. The more honorable is that SS8 once reached 240km/h-the highest speed temporally.

SS8 electric locomotive applies ZD115 pulse current traction motor, which is 6-pole series excitation motor with compensation windings and applies full laminated structure and H/H insulation technique. Its continuous power is 900kW and total power can reach 3600kW.

Bogie in SS8 applies wheel-set hollow shaft six-connection rod elastic drive device and full suspension drive. The traction device is level pulling bar stucture. Bogie applies single side straight tooth drive and secondary spring is high flexible metal spring.

Braking characteristics Driving characteristics