SJ U
Uf 849 in 2000
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| Type and origin | |
|---|---|
| Power type | Electric |
| Builder |
ASEA Nyqvist och Holm Motala ASJ Falun Thune |
| Build date | 1929–56 |
| Total produced | 152 |
| Specifications | |
|---|---|
| AAR wheel arr. | C-C |
| UIC class | C |
| Gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length | 9,600 mm (31 ft 6 in) |
| Loco weight | 47.4 tonnes (46.7 long tons; 52.2 short tons) (Ub, Ue) 49.2 tonnes (48.4 long tons; 54.2 short tons) (Uc) 50.4 tonnes (49.6 long tons; 55.6 short tons) (Ud, Uf) |
| Electric system(s) | 15 kV 16 2⁄3 Hz AC Catenary |
| Current collection | Pantograph |
| Performance figures | |
|---|---|
| Maximum speed | 45 km/h (28 mph) (Ua, Ub, Uc, Ue) 60 km/h (37 mph) (Ud, Uf) |
| Power output | 610 kW (820 hp) (Ua, Ub, Uc, Ud) 920 kW (1,230 hp) (Ue, Uf) |
U is a class of 152 electric shunter locomotives operated by the Swedish State Railways (Swedish: Statens Järnvägar, SJ) and Trafikaktiebolaget Grängesberg–Oxelösunds Järnvägar (TGOJ) of Sweden, and the Norwegian State Railways (NSB), LKAB and Norsk Jernverk of Norway. They were built by ASEA, Nyqvist och Holm, Motala, ASJ Falun and Thune between 1926 and 1956. NSB gave the class the designation El 10.
During the 1920s the Swedish State Railways started a program to electrify parts of their network. This caused a need for electric shunters on the West Main Line. A procurement was attempted from Switzerland, but no order was ever made. With the order of the D Class locomotives, SJ decided to order a shunter built with the same components. The initial order was for three Ua-locomotives were made in 1926 with delivery the following year. The motors were built by ASEA while the mechanical components were built by Nydqvist och Holm (NOHAB). The locomotives worked well, but had problems with the sight from the cab in one direction, so further models were built with a center cab. The Ub series was built by both NOHAB and ASJ Falun. The first delivery was ordered in 1929, and from 1930 to 1950, 90 units were delivered. From 1942 some of the units were also built by Motala. The proved highly economic, as they could replace expensive steam locomotives for shunting. In 1933, a single batter version was delivered, and given the designation Uc. The final batch of 25 units was ordered in 1954 and delivered 1955 and 1956. The Motala-built units had a different configuration with a higher maximum speed and were designated Ud.
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Wikipedia