British Rail Class 90

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British Rail Class 90
British Rail Class 90/0, no. 90017 at Norwich
Power type Electric
Builder BREL Crewe Works
Build date 1987–1990
Total production 50
Configuration Bo-Bo
UIC classification Bo'Bo'
Gauge 1,435 mm (4 ft 8+12 instandard gauge
Locomotive weight 84.5 tonnes (83.2 long tons; 93.1 short tons)
Electric system(s) 25 kV AC
Multiple working TDM system
Top speed 75–110 mph (121–177 km/h)
Train heating Electric Train Heating
Locomotive brakes Air, Rheostatic
Train brakes Air
Career British Rail
Number 90001–90050
Axle load class Route availability

The British Rail Class 90 electric locomotives were built by BREL at Crewe from 1987-1990. Each locomotive weighs 84.5 tonnes and has a top speed of 110 mph (180 km/h). They operate from 25 kV AC overhead wires and produce 5,000 bhp (3,700 kW). The class is employed on both express passenger services and heavy freight trains.