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然后我们还可以检查一下是不是继电器发生故障。同样也是用万用表检查，沿着急停开关的线路找到相应的继电器，很多时候由于电柜进油污，导致继电器内的弹片被黏住，导致继电器没法正常工作。像大铁线切割机床，电柜就是全封闭，继电器也是用的法国施耐德的，高品质的电气零配件可以保证机床的寿命。

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