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1997年4月,某县一建筑工地工人往楼层上吊砖,一民工在取提升机吊钩时发生触电,经抢救无效死亡.1 事故调查1.1 该提升机由电动机拖动.经摇测电动机定子绕组与外壳的绝缘电阻为10MΩ,绝缘正常.1.2 提升机的上升下降,由倒顺开关控制,进出线用的是三芯橡套电缆.倒顺开关用铁丝捆在提升机底座的角铁上.打开倒顺开关外壳,发现电缆线的一根芯线绝缘层老化脱落,导线裸露,直接接触倒顺开关外
In April 1997, a construction site worker in a county hung a brick on the floor, and a migrant worker was electrocuted while taking the hook of the hoistway and died after being rescued ineffectively.1 Investigation of Accident 1.1 The hoist was dragged by a motor, and the motor stator Insulation resistance of the winding and the shell is 10MΩ, insulation is normal .1.2 Hoist up and down, controlled by the inverted switch, access to the line with a three-core rubber cables. Shun switch with wire tied in the elevator base angle iron Open the inverted switch shell and found that a core of the cable insulation aging off, exposed wire, direct contact with the inverted switch outside