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.

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。

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To summarize the abrasion law and to explore new prevention measures have important significance to advance the operation and management levels of hydro stations on sandy rivers in our country.

总结其磨蚀规律，探索新的防护措施，对进一步提高我国多泥沙河流水电站的运行管理水平，有着重要的意义。

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