British Rail Class 317 | |
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![]() Greater Anglia Class 317/1 at Cambridge North in 2017 | |
![]() Greater Anglia Class 317/5 standard-class saloon in 2021 | |
In service | 28 March 1983 – July 2022[1][2] |
Manufacturer | British Rail Engineering Limited |
Built at |
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Family name | BR Second Generation (Mark 3) |
Replaced | |
Constructed |
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Refurbishment |
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Number built | 72 |
Number preserved | 2 vehicles |
Number scrapped | 65 |
Successor | |
Formation |
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Diagram |
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Fleet numbers |
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Capacity | As built: 292 seats (22 first-class, 270 standard) |
Operator(s) | |
Specifications | |
Car body construction | Steel |
Car length |
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Width | 2.816 m (9 ft 2.9 in) |
Height | 3.774 m (12 ft 4.6 in) |
Floor height | 1.144 m (3 ft 9.0 in) |
Doors | Double-leaf pocket sliding, each 1.010 m (3 ft 3.8 in) wide (2 per side per car) |
Wheelbase | Over bogie centres: 14.170 m (46 ft 5.9 in) |
Maximum speed | 100 mph (160 km/h) |
Weight |
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Traction motors | 4 × GEC G315BZ (248 kW (332 hp) each) |
Power output | 990 kW (1,328 hp) |
Electric system(s) | 25 kV 50 Hz AC overhead |
Current collection method | Pantograph |
UIC classification | 2′2′+Bo′Bo′+2′2′+2′2′ |
Bogies |
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Minimum turning radius | 70.4 m (231 ft 0 in) |
Braking system(s) | Electro-pneumatic (disc) (Westinghouse) |
Safety system(s) | |
Coupling system | Tightlock |
Multiple working | Within class |
Track gauge | 1,435 mm (4 ft 8 1⁄2 in) standard gauge |
Notes | |
Specifications as at November 1988,[4] except where otherwise noted. |
The British Rail Class 317 electric multiple units were built by BREL at York Works in two batches, from 1981-82 and 1985-87. They were the first of several classes of British Rail EMU to be based on the all-steel Mark 3 bodyshell, departing from the "PEP"-aluminium design which had spawned the earlier Class 313 to Class 315. The Mark 3 bodyshell was also the basis of Class 318, Class 455, and the diesel "sprinters" pioneered by the Class 150.
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