NSB El 7 was a series

electric locomotive An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor. Locomotives with on-board fuelled prime movers, such as diesel engines or g ...

s delivered between 1911 and 1918 to Norsk Transport that operated the

Rjukan Line , logo = , logo_width = , logo_alt = , image = , image_name = , image_width = , image_alt = , caption = SF ''Ammonia'', at Mæl, where the rail ...

and the

Tinnoset Line , logo = , logo_width = , logo_alt = , image_name = MF-Storegut Tinnoset 2004 SRS.jpg , image_width = , image_alt = , caption = The railway ferry MF ''Storegu ...

, where they were designated RjB.1, 2, 3, 6, 7 and 8. The locomotives were built by AEG (motor) and Skabo (chassis). The first three locomotives were delivered to the Rjukan Line along with two smaller units, RjB 4 and 5 (which were given the designation El 6 by NSB). El 7 is exactly two El 6; it has two transformers, four motors instead of two, Bo'Bo' instead of Bo axle arrangement, two

pantograph A pantograph (, from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical movements in a second pen. If a line dr ...

s, the same speed, and could haul twice the load. The locomotives cost NOK 52,090 in 1911. El 7

When two of the locos (no. 1 and 3) were transferred to

Norwegian State Railways Vygruppen, branded as Vy, is a government-owned railway company which operates most passenger train services and many bus services in Norway. The company is owned by the Norwegian Ministry of Transport. Its sub-brands include Vy Buss coach s ...

in 1920 after NSB took over the Tinnoset Line, where they were designated El 7 and numbered 2501 and 2502. Number 1 was sold back to Norsk Transport in 1932 while number 3 was transferred to Narvik in 1927 after it had been converted from 10 to 15 kV. It returned to Drammen in 1936 and remained there until it was taken out of service in 1956; RjB 6 was retired in 1960, the rest remained in service with Norsk Transport in 1966 when they were replaced with

NSB El 1 NSB El 1 is the first electric locomotive series used by the Norwegian State Railways, from 1922 until 1973. Twenty-four engines were delivered from ASEA and Thune, twenty-two in 1922 and two in 1930. Based on the German DB E 71 and Swedish SJ O ...

(given numbers 14 and 15). No. 2501 is retained at the

Norwegian Railway Museum The Norwegian Railway Museum ( no, Norsk Jernbanemuseum) is located at Hamar in Innlandet county, Norway. It is Norway's national railway museum. History Established in 1896, until 1912 the collection was housed on the second floor of the Hama ...

References

External links

Jernbane.net entry on the El 7
{{DEFAULTSORT:NSB El 07 El 07 AEG locomotives 15 kV AC locomotives Bo-Bo locomotives Electric locomotives of Norway Railway locomotives introduced in 1911 Norsk Transport locomotives Standard gauge locomotives of Norway