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楼主 |
发表于 2007-5-17 08:27
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引用第12楼hli168于2007-05-16 21:09发表的 :
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我听认证公司的工程师说一台机器只有一个带圆圈的,其他接地的不要带圆圈,带圆圈的就是电源线进来处的接地。 [s:3] 1 B; ~' L7 c2 ~" L& E
5017 Earth (ground) / ]4 v0 `! ]. s9 `1 d
To identify an earth (ground) terminal in cases where " K! `: A7 t0 v/ D% x' u
neither the symbol 5018 nor 5019 is explicitly required.
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5019 Protective earth (ground)
& ?, j2 H; B) B; N% ITo identify any terminal which is intended for connection to. N$ c) {) Z. k* U: n& T
an external conductor for protection against electric shock% n( t5 a1 X" L9 J% D
in case of a fault, or the terminal of a protective earth
7 }6 k- [1 S0 h; T! C0 ?% J2 r(ground) electrode.
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我是想明白5019这个地线贴纸的粘贴位置. |
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