China Railways SS7

China Railways SS7
SS7
SS7 electric locomotive
Power type Electric
Builder Datong Electric Locomotive Works
Model SS7
Build date 1992-2007
Total produced 113
UIC classification Bo'Bo'Bo'
Gauge 1,435 mm (4 ft 8 1⁄2 in)
Wheelbase 17,080 mm (56 ft 0 in)
Length 22,016 mm (72 ft 2.8 in) (between coupler centers)
Width 3,105 mm (10 ft 2.2 in)
Height 4,700 mm (15 ft 5 in) ± 30 mm (1.2 in)
Axle load 23 t
Electric system 25 kV AC
Transmission AC - DC
Top speed 100 km/h (62 mph)
Power output 4,800 kW
Tractive effort 485 kN (starting)
351 kN (continuous)

The SS7 is a type of electric locomotive used on the People's Republic of China's national railway system. They are widely used on electrified lines in the southwest part of China.

The design of SS7 was influenced by the 6K, an electric locomotive model imported from Japan.

Derivatives of SS7 include SS7B, SS7C, SS7D and SS7E.

v · d · eChina Locomotives of China China Railways.svg
Steam
ET7  • FD  • GJ  • HP • JF  • JF6  • JS  • KD6 • KD7  • KF  • PL2 • QJ  • RM  • SL  • SL6  • SL7  • ST1  • SY  • XK2  • XK13  • YH  • YJ
Diesel
Diesel hydraulic
DHF1 • DHF2 • DHF3 • DHF4 • DHF5 • DHF6 • DHF7 • DHF21 • BJ • NY5 • NY6 • NY7
Diesel electric
DF • DF2 • DF3 • DF4 • DF5 • DF6 • DF7 • DF8 • DF9 • DF10 • DF11 • DF12 • DF21 • HXN3 • HXN5 • ND1 • ND2 • ND3 • ND4 • ND5 • NJ1 • NJ2
Electric
DC motor
SS1 • SS2 • SS3 • SS4 • SS5 • SS6 • SS7 • SS8 • SS9 • 6G • 6G1 • 6K • 6Y2 • 8G • 8K
AC motor
AC4000 • DJ • DJ1 • DJ2 • HXD1 • HXD1B • HXD1C • HXD2 • HXD2B • HXD2C • HXD3 • HXD3B • HXD3C • SSJ3
List of locomotives in China  • Rail transport in the People's Republic of China  • China Railways  • Locomotive manufacturers

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