SŽ series 342

SŽ 342 is a series of single-system four-axle electric locomotives that make up the rolling stock of Slovenian Railways. Since it has "only" four axles compared to its six-axle contemporaries, the railwaymen somewhat mockingly called it a moped.[1] As the locomotive proved to be one of the most reliable, the nickname "Tsar" became established for it.

SŽ 342 FNM E.640
Type and origin
Power typeElectric
BuilderAnsaldo (later part of the ASGEN consortium)
Total produced40
Specifications
Configuration:
  UICBo'Bo'
Wheel diameter1250 mm
Minimum curve80 m
Length:
  Body15.8m
Width3.15 m
Height:
  Pantograph4.28m
Axle load20.3 t
Loco weight81 t
Electric system/s3 kV DC
Performance figures
Maximum speed120 km/h
Power output1980 kW
Career
OperatorsSlovenian Railways
Nicknamesmoped, tsar

In the years 1968-1970, 40 locomotives were delivered from Italy to haul passenger and light freight trains.

Disposition

Their service life is coming to an end and the fleet has roughly halved by now. In recent years, some locomotives were sold to the Italian regional railways Ferrovie Emilia-Romagna (FER) and Ferrovie Nord Milano (FNM), where they were renumbered to the E.640 series. Some of them have already been scrapped, and the rest will most likely be withdrawn from traffic in a few years.

Drive

The locomotive contains four electric motors (each motor on its own axis), which can be connected in parallel or in series, depending on the traction regime. Transmission on the driven axle is via a gear ratio of 25:76.[2]

See Also

References

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