|
|
7.8.2 Minimum spacings on printed wiring boards and for board-mounted components shall be not less4 j& p, g1 k O4 N
than those shown in Table 7.5 between:0 v9 Y# ]. p0 Q1 P; h& h
a) Uninsulated live parts of opposite polarity,/ S0 W! h/ L3 @) o4 v
b) Uninsulated live parts and a grounded dead-metal part, and
_/ L. d& l$ `c) Uninsulated live parts and an accessible dead-metal part.! ^5 i5 R. H, \+ P
) m k$ U& a+ h2 D. v; c% a) H
7.8.2 里面说的是不同极性距离，但是在table 7.5里面根本没有啊* M( i& }! _; N; x$ v6 _2 [
table 7.5 里面的这些是什么意思
- C+ ]2 @$ N6 U! ?% Z$ x8 ELive parts reliably positioned AND
% i* I( w; @5 E# ?+ oinsulator with CTI ³ 600 (PLC = 0)b; i.e.:, t# U- R# f5 m( Q
adjacent PWB traces, lead pins of" l# { B8 u! }, ~' k8 X/ g, O1 L
semiconductors to their mounting, etc.( \9 x( d7 O8 U% e
8 _8 `, B# t+ s$ L6 lLive parts reliably positioned AND( I ^! o; C2 D9 W0 e+ h2 d. _( ~
insulator with CTI ³ 100 (PLC £ 4)c; i.e.:5 N* a9 n! z: g+ v4 K) o6 m
adjacent PWB traces, lead pins of
% S- Z( E: Y+ x7 V: usemiconductors to their mounting, etc.
: u) y, c/ F6 c$ M- T/ t" u6 R( s1 i0 Q |
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2015-11-12 11:27
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡