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The following situations are exempt from the above requirements:6 K# S' u) x# ?1 O8 a+ N+ R+ d5 }
– where terminals for the connection of a supply are provided on a component (for example, a terminal block) or subassembly (for example, a power supply unit), the symbol(没圈的接地符号) is permitted for the protective earthing terminal instead of(有圈的接地符号) ;
$ z) m# K- ?! i; [$ v- h; o# I4 e+ ^3 O本人理解如下:
+ u* ~. G/ b) Y/ F0 \. ?如果设备的端子连接的是一个零件(例如一个终端模块)或者组件(比如一个电源),有圈的接地符号可以代替没圈的接地符号。
+ i; \" c7 `2 d' ] – on subassemblies or components, the symbol(有圈的接地符号) is permitted in place of the symbol(没圈的接地符号)provided that it does not give rise to confusion.;! a) N7 I+ J) h0 l
-->组件或者零件间的连接,如果用没圈的接地符号代替没圈的接地符号不会引起误解,则允许替代。8 r1 ?. ?7 Y$ C, d+ x, P) w' D
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