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陈四楼煤矿是一座设计能力240万t/a的现代化矿井主要运输设备是南翼强力带式输送机，运输能力为＊35o垃／h，带速为2．sin／s，采用6kV高压供电，4台280kw的电机拖动。自1997年使用以来，发现高压开关拒过流时能够自动重复合闸，并烧坏高压熔断器。经过认真分析，发现主要是过
Chen Silou mine is a modern mine with a designed capacity of 2.4 million t / a The main transportation equipment is the southern wing strong belt conveyor with a transportation capacity of * 35o garbage / h and a belt speed of 2. sin / s, using 6kV high-voltage power supply, 4 280kw motor drag. Since its use in 1997, it has been found that the high-voltage switch automatically recloses when it refuses to flow and burns the high-voltage fuse. After careful analysis, I found that it is mainly over