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Try to answer this这两个“接地”是不是概念/功能不一样? 他们的区别是什么?
& w$ k3 i7 H6 \' W! cFrom 60950-1:1.2.13.11 PROTECTIVE BONDING CONDUCTOR: conductor in the equipment, or a combination of
8 j- x' q6 a1 g) p1 tconductive parts in the equipment, connecting a main protective earthing terminal to a part of the equipment that is required to be earthed for safety purposes( T3 J6 Y" D0 A3 c' z& G$ Q
2线属于设备内部部件保护接地,3是设备主接地点。! u+ W' |: |6 c' T( a
" J" g, F( @- w! D D) Q- s"2"线是通常说的黄绿线吗? 8 G% A2 k4 B9 f9 S B
是,3线也是
Y$ r9 Y- B. w# F2,3的不同是:内部保护接地通过接地连续性测试即可,但主接地线一定要满足标准中的线径要求。 |
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