|
|

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 1 c, b, A# W: S
8.1.3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 ...
* H0 v Q$ d- f) l% o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.! O5 m4 M' L! h3 L7 Q* v6 W' Y
NOTE 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. |
|