| 摘要 |
<p>In a plant intended for driving traction motors e.g. railway locomotives or motor coaches, and which possibly comprises one or more electric machines provided with insulated conductors, the magnetic circuit in the traction motor(s) and/or in at least one of the other electric machines is connected directly to a high supply voltage of 21-800 kV, preferably higher than 36 kV. The insulation in each traction motor and other electric machines is built up of a cable (6) forming its winding, said cable (6) comprising one or more current-carrying conductors (31) with a number of strands (36), surrounded by at least two semiconducting layers (32, 37) and intermediate insulating layers (36). The traction motor(s) may be connected to the distribution network supplying the supply line of the railway without any other electric machine connected between, or via one or more of said other electric machines. The locomotive/motor coach may thus be constructed with only traction motor(s) without any other electric machine.</p> |
