The industrial dust properties as a wear factor of pit trucks electric machines elements

Abstract

It has been found that for the pit tracks BelAZ-75131 there is increase of electrical machines failures number in Kryviy Rih basin pits. As the largest percentage of faults is occupied by the wear winding insulation of engines, it was suggested that the reason for this negative process is that superfine iron ore dust, which compared with coal dust has high residual magnetization and the tendency to stick, gets into the internal cavity of traction machines with the cooling air thus forming a conductive congestion.