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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 :% G2 r n Z& q* c0 V
- Y! O8 @' ~+ g2 Q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]
; a! Y$ } @0 S+ O1 F+ R5017 Earth (ground) " k' Q7 \1 Q0 U' }% Y y5 X
To identify an earth (ground) terminal in cases where
7 w# i; `7 d" ]4 mneither the symbol 5018 nor 5019 is explicitly required.
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1 w" w; Z2 Y* ?+ u4 b- W2 ^5019 Protective earth (ground)
+ c2 l* |2 Y3 L4 [+ gTo identify any terminal which is intended for connection to
, W' {1 V, @, e* Y/ E/ n- F; c& ~an external conductor for protection against electric shock
* f# ?8 l# P/ C! I) r+ N; Y$ O% Cin case of a fault, or the terminal of a protective earth: v2 r4 z1 L- ^4 d+ ~) a/ ^- V
(ground) electrode.% w' h+ U; m- B3 r
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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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