British Rail Class 317

class of 72 four-car electric multiple units

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.

British Rail Class 317
NXEA 317506 Liverpool Street AB1.JPG
In service1981 - present
ManufacturerBREL York
Constructed1981 - 1986
Refurbishment1999 - 2000
Railcare Wolverton
Number built72 trainsets
Number scrapped13 sets.
Formation4 cars per trainset
Operator(s)Greater Anglia
Car length19.83 m
Width3.70 m
Height2.82 m
Maximum speed100 mph (160 km/h)
Weight137.3 t (317/1, 317/2, 317/7)
138.18 t (317/6 only)
Power output746 kW
Electric system(s)25 kV AC Overhead
Track gauge1,435 mm
Class 317/1, no. 317305 at Cambridge on 23rd May 2003. This unit was one of several loaned by WAGN to LTS Rail from 1996-1999, which involved the red stripe of the NSE livery being repainted green. This unit is now numbered 317505 and operated by Greater Anglia.