Power type Electric Build date 1992–2007 | Model SS7 Total produced 113 | |
 | ||
Builder Datong Electric Locomotive Works UIC class Bo'Bo'Bo'
(Except SS7E use Co'Co) | ||
The Shaoshan 7 (Chinese: 韶山7) 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.
Contents
Design
The design of SS7 was influenced by the 6K, an electric locomotive model imported from Japan.
The first SS7 was built in 1992 in Datong.In 1997, SS7s were used in Nanning-Kunming Railway. However, SS7s frequent failure. Therefore, Datong Electric Locomotive Works made improvements to SS7s. It was reduced to just four cases in one year in 2004.
SS7 Electric Locomotive was still produced as of 2007. Most of SS7s belong to Nanning Railway Bureau. However, 17 SS7s belong to Nanning Locomotive Depot, 95 SS7s belong to Liuzhou Locomotive Depot since March 2016. The last two SS7s(8112 and 8113) belong to Xiaoyi-Liulin Railway, which located in Shanxi.
Derivatives
Derivatives of SS7 include SS7B, SS7C, SS7D and SS7E.
SS7B
In 1997, Datong Electric Locomotive Works developed SS7B Electric Locomotive. However, there were only two SS7Bs manufactured. Two SS7Bs' each axis axle load 25 tons.
At first, two SS7Bs belong to Kunming Locomotive Depot, Kunming Railway Bureau, later two SS7Bs transfer with Nanning Locomotive Depot, Nanning Railway Bureau. In 2005, SS7B-0001 was destroyed in an accident which happened in Nanning-Kunming Railway.
Named locomotive
Manufacturers
SS7s have been manufactured by several companies: