Title: British Rail Class 77 - Wikipedia
Headings: British Rail Class 77
British Rail Class 77
From Wikipedia, the free encyclopedia
Contents
Description
Further use
Fleet details
References
Further reading
External links

Content: British Rail Class 77 - Wikipedia
British Rail Class 77
From Wikipedia, the free encyclopedia
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Class of diesel electric locomotives
British Rail Class 77
Preserved locomotive no. 27000 in original black livery
Type and origin
Power type
Electric
Builder
BR Gorton Works
Build date
1953–1954
Total produced
7
Specifications
Configuration: ​
• UIC
Co′Co′
• Commonwealth
Co-Co
Gauge
4 ft 8
+
1⁄2 in ( 1,435 mm) standard gauge
Wheel diameter
3 ft 7 in (1.092 m)
Length
59 ft 0 in (17.98 m)
Loco weight
102.5 long tons (104.1 t; 114.8 short tons)
Electric system/s
1500V DC Catenary
Current pickup (s)
Pantograph, x 2
Traction motors
Metropolitan-Vickers
Train heating
Steam generator
Loco brake
Air and electrical regenerative
Train brakes
Vacuum
Performance figures
Maximum speed
90 mph (145 km/h)
Power output
2,490 hp (1,857 kW)
Tractive effort
45,000 lbf (200 kN)
Brakeforce
85 long tons-force (847 kN)
Career
Operators
British Railways
Numbers
27000–27006
Locale
Manchester–Sheffield–Wath line
Retired
September 1968
Disposition
All sold to Netherlands as NS 1500 Class
The British Rail Class 77, also known as Class EM2, is a class of 1.5 kV DC, Co-Co electric locomotive. They were built by Metropolitan-Vickers in 1953–1954 for use over the Woodhead Line between Manchester and Sheffield . Contents
1 Description
2 Further use
3 Fleet details
4 References
5 Further reading
6 External links
Description
Seven locomotives of this type were constructed. They represented the first Co-Co type of overhead electric locomotive built for use in the United Kingdom. The design was based on that of the smaller Class EM1, which dated from 1941. Initially, 27 locomotives of this type had been planned, but by the early 1950s, the benefits of using the 25 kV AC system had been demonstrated, which meant that the Woodhead Line would be an isolated electric system. Consequently, the order was cut to just seven locomotives.