它是由绝缘失败，是一个严重的触电危险。
It is caused by insulation failure, and is a serious shock hazard.
安全性：产品线路是否暴露在外，有无触电危险？
Security: whether the product lines are exposed, and whether have the risk of electric shock?
确认输入电源处完全断开的情况下，才可进行接线操作，否则有触电危险。
Ensure that power supply has been cut off before commencing cable, otherwise electrocution can occur.
确认输入电源处完全断开的情况下，才可进行接线操作，否则有触电危险。
Ensure that power supply has been cut off before commencing cable, otherwise electrocution can occur.
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