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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 :% ^# m+ ^; s5 S" q
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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]
# I. _! P0 T# S7 V) H5017 Earth (ground)
% R3 T5 c, z1 P) C( W9 \- P( o' MTo identify an earth (ground) terminal in cases where 7 Z3 b' \# v' D& s. z3 R
neither the symbol 5018 nor 5019 is explicitly required. t- A: A! I1 [. y4 a+ V, f
' g x B6 N: e% Q& j5 \( X ~5019 Protective earth (ground): h8 z9 c* X+ m" d; f
To identify any terminal which is intended for connection to
3 y9 V/ \# S+ X/ Z% ?an external conductor for protection against electric shock
8 B/ e/ E, k2 din case of a fault, or the terminal of a protective earth
( R# U7 Z/ [0 u0 R ~! m* } Y7 @(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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