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The following situations are exempt from the above requirements:
2 w" l7 `- K8 S) z8 g; m7 B – 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) ; - h {' M* g/ {5 x* _& [
本人理解如下:( {. Z& B: H1 h, z, j! w: K) I
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。( r1 R7 L: T6 _9 K* J, ]5 K
– 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.;
# Z8 K% n3 ~9 f3 G; O-->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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