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The following situations are exempt from the above requirements:( j5 V, \3 m( K" R0 u/ c' E3 m
– 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) ;
) L+ j4 I& [" M2 E本人理解如下:/ P; H& J) z" K. b$ v
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。( h6 w' N6 n. ~
– 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.;8 ]0 i" A' v" b# z
-->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。
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