电动机的碳刷和发电机的碳刷又统称电机碳刷或电机电刷，电机碳刷的样子有点像擦铅笔的橡皮条那样，顶上有导线引出，体积有大有小。
根据观察、测量及分析，找出了发电机碳刷烧损事故的主要原因。
Based on observation, measurement, and specialists analysis, the main causes of burnout failure for carbon brush on said generators have been found.
要想换碳刷， 必须卸螺丝，把电机拆开。
To replace the brushes the motor has to be split by undoing screws.
电机双端轴承绝缘并且电机轴碳刷接地，可构成对轴承电流的最佳防护。
The optimal protection for bearing current was reached by the insulation of both ends of bearing and grounding of carbon brush of motor shaft.
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