The locomotives were built in 1925 by the Officine Meccaniche
Reggiane, reusing electrical parts from withdrawn
railcars. There were two 3-axle bogies and six
traction motors, giving a maximum speed of 85 km/h. The motors were nose-suspended and geared to the axles.
The rebuild was done to enable the locomotives to work under a 3,000-volt
overhead line power supply and to cope with a post-war shortage of locomotives. In order to use the electrical equipment, and the 650-volt motors, without excessive modifications, the
metadyne system was adopted. This halved the line voltage of 3,000 volts to 1,500 volts. The 1,500 volt supply was then fed to the motors in
series pairs, giving 750 volts per motor. The power output was increased from 950 kW (1,270 hp) continuous to 1,350 kW (1,810 hp) (1 hour rating).
References
Giovanni Cornolò, Locomotive elettriche FS, Parma, Ermanno Albertelli Editore, 1983, pp. 195-198.
The locomotives were built in 1925 by the Officine Meccaniche
Reggiane, reusing electrical parts from withdrawn
railcars. There were two 3-axle bogies and six
traction motors, giving a maximum speed of 85 km/h. The motors were nose-suspended and geared to the axles.
The rebuild was done to enable the locomotives to work under a 3,000-volt
overhead line power supply and to cope with a post-war shortage of locomotives. In order to use the electrical equipment, and the 650-volt motors, without excessive modifications, the
metadyne system was adopted. This halved the line voltage of 3,000 volts to 1,500 volts. The 1,500 volt supply was then fed to the motors in
series pairs, giving 750 volts per motor. The power output was increased from 950 kW (1,270 hp) continuous to 1,350 kW (1,810 hp) (1 hour rating).
References
Giovanni Cornolò, Locomotive elettriche FS, Parma, Ermanno Albertelli Editore, 1983, pp. 195-198.