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The following situations are exempt from the above requirements:
5 K, r" `' {& F4 A3 |* e8 z" ^- [ – 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) ;
: b( N1 w/ \7 w5 k, C6 ^本人理解如下:5 A5 K* X; e6 k- h+ l) J
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。
7 j6 y' N# {) ^2 `3 ^9 i – 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.;
2 V' `: `* d' L- a-->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。* P3 v$ h* X. A, `
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