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引用第12楼hli168于2007-05-16 21:09发表的 :& y% n( l& k) G' d0 W
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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]
: _3 d q( v- r) d G2 m5 T1 D5017 Earth (ground) ' _4 U9 _+ j9 }& w0 q
To identify an earth (ground) terminal in cases where
- N. g2 e( b1 n$ O0 r0 N+ M( zneither the symbol 5018 nor 5019 is explicitly required.
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5019 Protective earth (ground)5 K$ z5 ?1 O/ v5 ^' q( I: r
To identify any terminal which is intended for connection to
0 P8 f, w: e7 Kan external conductor for protection against electric shock& r2 r. C# q& K$ I- a8 \
in case of a fault, or the terminal of a protective earth
5 p. }: y( q, R2 \2 d; o(ground) electrode.
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; e! K$ Q a8 S* F) Y2 H我是想明白5019这个地线贴纸的粘贴位置. |
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