The Shaoshan 7 () is a type of
electric locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a Battery (electricity), battery or a supercapacitor. Locomotives with on-board fuelled prime mover (locomotive), ...
used on the
People's Republic of China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
's national railway system. They are widely used on electrified lines in the southwest part of China.
Design
The design of SS7 was influenced by the
6K, an electric locomotive model imported from Japan.
[SS7型电力机车](_blank)
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The first SS7 was built in 1992 in
Datong
Datong is a prefecture-level city in northern Shanxi Province, China. It is located in the Datong Basin at an elevation of and borders Inner Mongolia to the north and west and Hebei to the east. As of the 2020 census, it had a population o ...
. In 1997, SS7s were used in
Nanning-Kunming Railway. However, SS7's frequent failure lead to Datong Electric Locomotive Works making improvements to SS7s. Failure 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
Liuzhou Locomotive Depot
The Liuzhou Locomotive Depot (Chinese:柳州机务段) is a locomotive depot that belongs to the Nanning Railway Bureau. It is located in Liuzhou and was founded in 1942. Equipped models
* China Railways DF4B
* China Railways DF4D(0000 Series ...
,
Nanning Railway Bureau
China Railway Nanning Group, officially abbreviated as CR Nanning or CR-Nanning, formerly, Nanning Railway Administration is a subsidiary group under the umbrella of the China Railway Group (formerly the Ministry of Railway). The railway adminis ...
. The last two SS7s (8112 and 8113) belong to Xiaoyi-Liulin Railway, which is located in
Shanxi
Shanxi; Chinese postal romanization, formerly romanised as Shansi is a Provinces of China, province in North China. Its capital and largest city of the province is Taiyuan, while its next most populated prefecture-level cities are Changzhi a ...
.
Derivatives
Derivatives of SS7 include SS7B, SS7C, SS7D and SS7E.
SS7B
In 1997, Datong Electric Locomotive Works developed the SS7B Electric Locomotive. There were only two SS7Bs manufactured, both SS7Bs' each axis axle load 25 tons.
At first, two SS7Bs belonged to Kunming Locomotive Depot, Kunming Railway Bureau. Later the two SS7Bs were transferred to
Nanning Locomotive Depot
Nanning Locomotive Depot (Chinese:南宁机务段) is a locomotive depot belong to Nanning Railway Bureau. It was founded in 1951. ,
Nanning Railway Bureau
China Railway Nanning Group, officially abbreviated as CR Nanning or CR-Nanning, formerly, Nanning Railway Administration is a subsidiary group under the umbrella of the China Railway Group (formerly the Ministry of Railway). The railway adminis ...
. In 2005, SS7B-0001 was destroyed in an accident which happened on the Nanning-Kunming Railway.
南昆线45224次货物列车脱轨重大事故
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SS7C
In 1998, Datong Electric Locomotive Works and Zhuzhou Electric Locomotive Research Institute, Chengdu Locomotive and Rolling Stock Works developed SS7C Electric Locomotive. There were 171 SS7Cs manufactured.
SS7Cs' each axis axle load 22 tons, and support head-end power. Its maximum speed is .
SS7D
In 1999, Datong Electric Locomotive Works and Zhuzhou Electric Locomotive Research Institute, Chengdu Locomotive and Rolling Stock Works developed SS7D Electric Locomotive. There were 59 SS7Ds manufactured, and belong to Xi'an Locomotive Depot, Xi'an Railway Bureau.
SS7D use lightweight design, each axis axle load 21 tons, and support head-end power. Its maximum speed is .
SS7E
In 2001, Datong Electric Locomotive Works and Dalian Electric Traction R & D Center, Dalian Locomotive & Rolling Stock Works developed the SS7E Electric Locomotive. There were 146 SS7Es manufactured.
SS7E use lightweight design, however its axle arrangement is Co'Co'. Each axis axle load 21 tons, and support head-end power. Its maximum speed is .
Named locomotive
* SS7-0076, "May 4th's Red Flag" (Chinese: 五四红旗号).
* SS7D-0631,"Steelers Iron Horse"(Chinese: 钢人铁马号).
Gallery
SS7-0076.jpg, SS7-0076 "4 May's Red Flag", Shilin, 1999
China Railways SS7B 0002 20180526 02.jpg, SS7B-0002, May 2018
China_Railways_SS7_0082_20171223.jpg, SS7-0082 is a verify locomotive during the development China Railways SS7C.Beijing West railway station
Beijingxi (Beijing West) railway station (), colloquially referred to as ''West Station'' (), is located in western Beijing's Fengtai District. Opened in early 1996 after three years of construction, it was the largest railway station in As ...
.
SS7E 0113.JPG, SS7E-0113 in Xi'an railway station
Manufacturers
SS7s have been manufactured by several companies:
* Datong Electric Locomotive Works (Most of SS7s.)
* Dalian Locomotive & Rolling Stock Works (SS7E Electric Locomotive's 7000 Series.)
References
Bo-Bo-Bo locomotives
SS7
25 kV AC locomotives
CRRC Datong locomotives
Railway locomotives introduced in 1992
Standard-gauge locomotives of China
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