The class 151 appeared in 1972 as a further development of the class 150 due to increased performance requirements in heavy and fast freight service. Its design envisaged speeds of up to 120 km/h / 75 mph and train loads of up to 2,000 metric tons for freight service, which could only be reached by a locomotive with a performance of over 5,000 kilowatts / 6,702 horsepower. Krupp and AEG were responsible for the design of the class 151. By using lightweight technology as much as possible, the required axle load was maintained despite a more powerful main transformer and reinforced electrical resistance brakes. Road number 151 001 was delivered as the first unit on November 21, 1972 in a chrome oxide green paint scheme, which was kept until the delivery of road number 151 075 (except for road number 151 073).
Prototype: German Federal Railroad (DB) class 151 heavy freight locomotive. Chrome oxide green paint scheme. Road number 151 034-6. The locomotive looks as it did in Era IV around 1975/1976.
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