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在什么情况下的开关、刀闸的操作手柄上须挂“禁止合闸,有人工作!的标示牌?

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正确答案:

1)一经合闸即可送电到工作地点的开关、刀闸。

2)已停用的设备,一经合闸即有造成人身触电危险、设备损坏或引起总漏电保护器动作的开关、刀闸。

3)一经合闸会使两个电源系统并列或引起反送电的开关、刀闸。

答案解析:

暂无解析

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