Abstract :
THE Société Nationale des Chemins de fer Francais (SNCF) covers 25,000 miles of route of which 4,000 miles are electrified: 3,000 miles in 1,500 volts d-c and 1,000 miles in 25 kv, single phase, 50 cps. These electrified lines now handle 50% of the total traffic.
