Three-phase railway electrification of the Valtellina
Electrificación ferroviaria trifásica de la Valtelina
- Date
- 1902 · confidence high
- Place
- Lecco, Lombardy, Italy
- Credited to
- Kálmán Kandó and Ganz (Hungary)
- Field
- Matter & energy
What was discovered
The lines from Lecco to Colico, Sondrio and Chiavenna were electrified in 1902 with three-phase alternating current at 3 kV and 15 Hz, with two overhead wires. It was the first mainline railway electrified with three-phase power.
What it led to
- the Italian three-phase network until the 1970s
- Kandó's three-phase locomotives (Ganz)
- single-phase low-frequency and 50 Hz electrification