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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 :5 D; f- q3 j- r4 g; K
- e$ ^0 C3 \- k( ?( Z: l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]
2 Q: Q$ }" [) Y7 n6 z; }$ h5017 Earth (ground) 4 D+ r( A0 g) y, K! w' L e
To identify an earth (ground) terminal in cases where l5 T+ l1 H. z# Y- w- b
neither the symbol 5018 nor 5019 is explicitly required. 1 }& I" G2 g4 @+ [) y/ w$ Z% `
% N$ _5 [# |8 T5 w5019 Protective earth (ground)! \+ W( y' _# j; Y; R2 ^
To identify any terminal which is intended for connection to
: @9 ^) q5 v, x. Z( f& a& P3 U. nan external conductor for protection against electric shock
5 l, o2 V' [( [+ w( `in case of a fault, or the terminal of a protective earth
- _% w* E1 c2 V7 n- V(ground) electrode.3 B) P' y, B# U, ]/ f
& q8 G4 [! s( c我是想明白5019这个地线贴纸的粘贴位置. |
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