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大家好!请高手帮忙一下!
. i0 Q; z# i5 y) ]. I1 o4 U对于接地符号带圈的与不带圈的我越来越混淆了!!
% N2 V/ ?) N) ?( S5 i在UL60950中有说到,
3 V. C! A8 V7 K9 }: D' @# R' CA wiring terminal intended for connection of a PROTECTIVE EARTHING CONDUCTOR shall be indicated by/ G1 Z5 `4 z; S! H2 c: v1 r& s& `0 R
the symbol (60417-1-IEC-5019). This symbol shall not be used for other earthing terminals.
; d% O* O& j9 M, x; \2 w; ~" a1 K对于接地,分为PE与PB,还有功能接地.5 i, B3 }6 c. {$ l+ a
请问我一个模块电源,它不直接与DC mains相连,PCB板上的接地端用带圈的还是不带圈的?功能接地用哪个符号呢?, W, a6 P) e$ U
谢谢了? |
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