Diagnostics of Mechanical Condition of Electrical Machine Sliding Contact

Mechanical condition of working surfaces of collectors and slip rings is one of the most important integral indices characterizing electrical machine quality, their separate units and parts. At collector profile impairment in the shape of projecting and sinking down separate collector segments and their groups, faulty performance of operating collector surfaces and collector rings from cylindrical shape, improper rotor balancing, in perfection of bearings and bearing shields the level of brush sparking increases, electrical machine reliability decreases on the whole. For solving the problems of experimental profilemetric investigations of collectors and collector rings as well as the record of linear microdisplacing electric machine brushes in brush-holder pits in the process of operation diagnostic system has been elaborated.