|
|

楼主 |
发表于 2013-10-10 17:38
|
显示全部楼层
地瓜 发表于 2013-10-10 15:50 
, x& {& _% g% s' d( N2 W8.1.3写的是针对 live parts of visibly glowing heating elements···也就是说只有在这类元件才用prob ... . z5 Z- T& h6 c6 H
除了live parts of visibly glowing heating elements·外,还有live parts of all poles of which can be disconnected by a single switching action.
7 A: }8 x6 a( v4 j0 n: i' m" xNOTE For appliances provided with a supply cord and without a switching device in their supply circuit, the withdrawal of the plug from a socket-outlet is considered to be a single switching action. |
|