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The following situations are exempt from the above requirements:9 j+ ^) R( f$ b( B& f6 ~! J, d
– 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) ;
* v9 M _ K" E' _" O本人理解如下:. s; q# T) M6 P+ O$ x5 r
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。) ]0 C1 B n( r! I0 z
– 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.;
6 ^$ a1 c3 U; v; U+ Z8 X4 C! O0 R-->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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