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引用第12楼hli168于2007-05-16 21:09发表的 :3 r' v9 O! @: l* K
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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] # l* y' K& ?) S4 _& e8 ?
5017 Earth (ground) . C* _. Y$ {* z6 D) ?: p
To identify an earth (ground) terminal in cases where
8 P2 _2 {$ u6 \neither the symbol 5018 nor 5019 is explicitly required. * D6 X% {( t" z3 Z8 Q
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5019 Protective earth (ground)0 v5 n, E; c/ F3 Y7 }
To identify any terminal which is intended for connection to
0 K. n( H9 ^% t# \( i8 wan external conductor for protection against electric shock
; ~% K3 I$ t2 c1 J3 kin case of a fault, or the terminal of a protective earth5 b4 w; ]: r/ R, |/ X. \, c
(ground) electrode.
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* U' I n) t8 Z4 s我是想明白5019这个地线贴纸的粘贴位置. |
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