| 摘要 |
During the operation of an electrical machine, brush dust is generated as a result of a frictional wear of the brushes (5, 50), The brush dust is deposited in undesired locations of the electric machine and causes sparkovers or increased frictional resistance. In order to solve the above-mentioned problem, the invention provides for a brush dust collecting device (41) comprising a dust collecting bead (6, 13, 21, 42) mounted in direct plurality to the slip ring (1, 11, 23, 53).
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