FS E.432
| FS E.432 | |
|---|---|
 |
|
| Numbering: | E.432.001-040 |
| Number: | 40 |
| Manufacturer: | Breda |
| Year of construction (s): | 1928 |
| Retirement: | 1976 |
| Axis formula : | 1'D1 ' |
| Length over buffers: | 13,910 mm |
| Height: | 3,810 mm |
| Total wheelbase: | 10,710 mm |
| Service mass: | 94 t |
| Friction mass: | 71 t |
| Top speed: | 4 levels: 37.5 - 50 - 75 - 100 km / h |
| Continuous output : | 2,200 kW |
| Starting tractive effort: | 140 kN |
| Driving wheel diameter: | 1,630 mm |
| Impeller diameter: | 1,110 mm |
| Power system : | 3.6 kV / 16.7 Hz three-phase current |
| Number of traction motors: | 2 |
| Drive: | Articulated drive according to Bianchi |
The class E.432 is an electric locomotive of the Italian Ferrovie dello Stato with the wheel arrangement 1'D1 'for operation with three-phase current . 40 of these locomotives were built in 1928, and they were used on the northern Italian three-phase network, especially in express train service.
history
The locomotives were the most modern and powerful locomotives from the northern Italian three-phase network . 40 copies were made in 1928 near Breda . They were developed from the 37 locomotives of the FS E.431 series and were procured to transport heavy express trains. Thanks to the four coupling axles, the performance could also be brought to the rails better, the performance was also better at the speed level of 50 km / h than with the previous version .
The locomotives were to be found practically in the entire northern Italian three-phase network and were based in Bologna , Bolzano , Turin and Genoa . After the Second World War , their area of operation was limited to the Savona and Cuneo depots , and from 1974 they were only stationed in Alessandria . The locomotives remained in place until the end of three-phase operation in 1976. The E.432.001 of the locomotives has been preserved. This is located in the National Railway Museum Pietrarsa . The E.432.031 has also been preserved for posterity in the Savigliano Railway Museum.
technical features
The E.432 series had relatively large drive wheels with a diameter of 1,630 mm, coupled by means of a Bianchi joint drive . Compared to the other three -phase locomotives of the Northern Italian three-phase network , the locomotives did not have pantographs , but for the first time had pantographs .
The frequency-dependent three-phase drive and the pre-set supply frequency did not permit any fine-grained control of the motor speed. The travel speed was selected with four switching stages of the twelve-pole motor coil windings, whereby after the start-up and transition phases there is a final idling speed of 37.5; 50; Could reach 75 or 100 km / h. The lowest speed level was achieved in series , the following in parallel through the combination of twelve, eight and six poles. The three-phase current taken from the catenary was passed on to the drive motors with the optimum power factor. Between the four speed levels, the liquid starter served as a so-called accelerator between the continuous speed levels . This unit worked as a fluid resistance, which enabled a steady acceleration when starting and when changing to a higher speed level. Compared to the previous three-phase locomotives, the E 432 did not have any fluid resistances with separately circulating fresh water, but the soda solution evaporated directly. The solution evaporated through a chimney and could be circulated with rotatable smoke deflectors.
A locomotive of the type E.432.030 was equipped with a device for double traction , mostly in connection with locomotives of the type FS E.431 . At that time, the controls did not work smoothly, but could only be used, even for locomotives of the same type, only for vehicles with the same drive wheel diameter. Therefore, the diameter of the drive wheels had to be written down during main inspections so that the operations service could see which locomotives could be used for the double traction.
literature
- Renzo Pocaterra: Locomotives . Kaiser, Klagenfurt 2006, ISBN 3-7043-1367-X .
- Joachim von Rohr: Ligurian three-phase summer 1963. EK-Verlag, Freiburg 2014, ISBN 978-3-88255-469-4 .
Web links
Individual evidence
- ↑ Internet site via the E.432.031 in the Savigliano Railway Museum
- ↑ Wolfgang Messerschmidt: History of the Italian Electric and Diesel Locomotives Orell Füssli Verlag, Zurich 1969, p. 38.
- ↑ Joachim von Rohr: Ligurischer three-phase summer 1963. EK-Verlag, Freiburg 2014, ISBN 978-3-88255-469-4 , p. 90.
- ↑ Joachim von Rohr: Ligurischer Drehromsommer 1963. EK-Verlag, Freiburg 2014, ISBN 978-3-88255-469-4 , p. 25.
- ↑ Joachim von Rohr: Ligurischer Drehromsommer 1963. EK-Verlag, Freiburg 2014, ISBN 978-3-88255-469-4 , p. 17.