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The following situations are exempt from the above requirements:
* K) S+ z" k0 X+ E$ g& B4 k – 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) ; , q3 t: s6 ~, q: K
本人理解如下:5 _) @; X+ v: e. n
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。
% E X- R/ M- M8 j8 L) r – 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.;* Z6 a0 i, Q. H {
-->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。" n0 [) B% L3 M$ U' e! d
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