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发表于 2007-7-16 15:13
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引用第3楼caballo3157于2007-07-16 07:47发表的 :3 i' ?! l3 A5 Z$ @
比较2.4.3: u1 ?% a \3 n, ^! E6 l% d3 Z
2.4.33 D* Y; M" b- c* `
DIRECTLY CONNECTED TO THE MAINS
# |5 d; \, S& a! ^, r9 C, R" helectrical connection with the MAINS in such a way that a connection to either pole of the MAINS
. W' y+ W. H9 T; [" _+ d& gcauses in that connection a permanent current equal to or greater than 9 A, protective devices
0 O4 H7 B9 h3 {7 H( G.......
. n: _: a& B) W. bCA兄, 关于这两名词的定义, 还是不能理解. 能否具体说明一下? 比如可以举个例子吗? |
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