 The main difference between ETR 460, ETR 470 and ETR 480 is that the 460 run only on 3 kV DC, the 470 on both 3 kV DC and 15 kV AC, and the 480 on both 3 kV DC and .The ETR 480 was originally built without real 25 kV AC electrical equipment.This equipment is now installed on all the sets and the trains that have been converted are then re-measured on ETR 485.