项目中应用了直流有刷电机，由此带来了碳刷磨损、电磁干扰（EMI）等问题。
The use of Brush DC motor could cause the maintenance problem and some EMIproblems.
本实用新型在碳刷磨损达到 极限时，可以及时提醒用户更换碳刷，避免了机器非正常损坏。
When the wear of the carbon brush reaches to the limit, the wear limit alarm device can timely remind the user of replacing the carbon brush, so the non-normal damage of the machine is avoided.
介绍了灯泡贯流式机组滑环碳刷系统的磨损情况，分析了滑环碳刷磨损严重的危害和滑环碳刷系统磨损的原因。
Analysis of abrasion of the slip-ring carbon and brush system for bulb hydro-generating units, its great danger and the cause of this phenomenon are presented.
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