Electric locomotive El 1 # 2011 (built in 1922) of the Norwegian State Railway (NSB) in the hall of the Norsk Railway museum in Hamar. In connection with the 1920 gauge change and the subsequent 1922 electrification of the rail line from Oslo V to Brakerøya, NSB procured 22 units of the El 1 series from Norwegian manufacturers as its first own electric locomotive series. The electric part was built by Per Kure Norsk Motor- og Dynamofabrik in Hasle, the mechanical part by Thunes mekaniske verksted. The locomotives were used in freight and passenger service. The locomotive is comparable in design to the Bavarian EG 2, but also has features of bridge frame locomotives such as the Prussian EG 511 to EG 537. It has a continuous main frame and two coupled, two-axle bogies, with both axles driven by one motor each via a jackshaft with coupling rods. The traction and buffing devices are located on the bogies. The electric motors are each mounted in the bogie and covered by a hood permanently attached to the main frame. Behind the cab are the mains switch, transformer and control units. The two motors produce a total of 940 hp, the locomotive weighs 62 tons and reaches a top speed of 70 km/h. Between 1962 and 1973, all 24 locomotives of the El1a and El1b series in NSB's fleet were retired, the last being El 1 # 2022 on June 15, 1973. Only El 1 # 2011, which had already been taken out of service on March 2, 1973, was handed over to Norsk Jernbaneklubb immediately after its retirement, which restored it and transferred it to the Norsk Jernbanemuseum in 1975. Since then, it has been used as an operational museum locomotive.
