British Rail Class 91

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British Rail Class 91
Virgin Trains InterCity 225 Class 91 Electric Locomotive
Type and origin
Power typeElectric
Build date1988–1991
Total produced31
 • WhyteBo-Bo
 • UICBo'Bo'
Gauge1,435 mm (4 ft 8 12 in) standard gauge
Length63 ft 8 in (19.41 m)
Loco weight84 tonnes (83 long tons; 93 short tons)
Electric system/s25 kV AC
Current pickup(s)Pantograph
Loco brakeAir
Train brakesAir
Performance figures
Top speedDesign: 140 mph (225 km/h)
Service: 125 mph (201 km/h)
Brakeforce45 long tons-force (450 kN)
Railroad(s)British Rail
National Express East Coast
Number91001–91031; later 91101–91122, 91124-91132

The British Rail Class 91 is a class of 140 mph, 6,300 hp electric locomotives ordered specifically for the East Coast Main Line modernisation and electrification programme of the late 1980s. Built to replace the previous Class 43 (better known as the InterCity 125), the Class 91s were given the auxiliary name of InterCity 225 to indicate their status as a new version of the 125 and their envisaged top speed of 225 km/h (140 mph). The other end of the InterCity 225 train set is formed of a Driving Van Trailer, built with a similar bodyshell to the Class 91 locomotives.