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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] " r) G3 }( a+ C+ a7 W& N9 H% s
5017 Earth (ground) 6 Q* G* [2 t* F
To identify an earth (ground) terminal in cases where
9 t1 h8 z0 D0 t! U( Gneither the symbol 5018 nor 5019 is explicitly required.
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3 m) H" w, I# I5 p+ ~2 g5 R5019 Protective earth (ground)/ N: m3 D# A/ K: M- V! B! f
To identify any terminal which is intended for connection to- P; n- q: T" z c
an external conductor for protection against electric shock3 L: m; z) V6 Q, S# V* f; ~& a, T$ r
in case of a fault, or the terminal of a protective earth
, q) n% b2 O- v' U N* h8 l4 U(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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