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The following situations are exempt from the above requirements:7 M6 V0 m9 g0 q$ [9 _
– 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) ;
% u, p0 C( A! B" a* v本人理解如下:3 N. X6 E) L+ G4 d1 a
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。
6 g i3 k; B4 Y2 V – 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.;. ]/ _ e8 H+ J! 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。
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