SJ Mg
| Performance figures | |
|---|---|
| Maximum speed | 80 km/h (50 mph) |
| Power output | 2,640 kW (3,540 hp) |
| Tractive effort | 300 kN (67,000 lbf) |
| Career | |
|---|---|
| Operators | Statens Järnvägar |
Mg is an electric locomotive used by Swedish State Railways (Swedish: Statens Järnvägar, SJ) for hauling freight trains. It was built in 17 copies by ASEA and was in service until 1980.
The Mg-series was built for the electrification of Norra Stambanan in the 1940s. It was steeper and more curved than the main lines in Southern Sweden, and single-track sections meant that long freight trains had to be used to make best use of line capacity. The D-series was not powerful enough and the Of-series was too long for the curves. But as experience of the building of bogie-locomotives increased, a Co'Co'-design was chosen for Mg, as the first bogie-locomotive in Sweden. More power also meant that the direct current motors from the D-series had to be replaced with the alternating current motors of the F-series. The machine room was not symmetric, so the loco was not the same on the right and left side. The Mg was the basis for the Ma-series built in the 1950s.
References
External links
- Järnväg.net on Mg (in Swedish)
