China Railways SS1

SS1
File:SS1-1249 200908.JPG
Type and origin Power type Electric Builder Zhuzhou Electric Locomotive Works Model 6Y1 / SS1 Build date 1968—1988 Total produced 7 (6Y1) 819 (SS1)
Specifications Configuration: ​  • UIC Co'Co' Gauge 1,435 mm (4 ft 8+1⁄2 in) Electric system/s 25 kV 50 Hz AC Catenary Current pickup(s) Pantograph Transmission AC—DC

The SS1 (Chinese: 韶山1) is a type of AC-powered electric locomotive used by China Railways. This locomotive was the first Chinese electric main line locomotive, built by the Zhuzhou Electric Locomotive Works with the assistance of the Soviet Union and following the design of the Soviet-H60 electric locomotive. The power supply was industrial-frequency single-phase AC, and the axle arrangement Co-Co.

Equipment

The first prototype locomotive, 6Y1-001, which used an ignitron-controlled rectifier, was produced in 1958. A further 6 prototypes (002 to 007) were produced between 1962 and 1966. A silicon semiconductor-controlled rectifier was used from No. 004 onwards.

Modifications

In response to technology of the French-made 6Y2 locomotive, Zhuzhou Plant made major modification in the design of the 6Y1 locomotive, improving the reliability of the rectifier, traction motors and rheostatic braking system. The eighth locomotive, No. 008, was produced in 1968. The series was also renamed from 6Y1 to SS1 (SS stands for Shaoshan, birthplace of Chinese leader Mao Zedong).

Dimensions

The locomotive is 19.4 meters (63 ft 8 in) long, with a maximum speed of 80 km/h (50 mph), and continuous power output of 3,780 kilowatts (5,070 hp).

Preservation

The model went out of production in 1988 with a total of 826 manufactured: 7 of 6Y1 and 819 of SS-1. Number SS1008 is preserved at the China Railway Museum.

References

(Chinese)*运行中的韶山1型电力机车 1603号 (Chinese)* 我国自行研制的首台韶山1型国产电力机车“退役” (新华网)