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7.8.2 Minimum spacings on printed wiring boards and for board-mounted components shall be not less* f& h/ t# K( B: v! i, @1 A, c
than those shown in Table 7.5 between:
' r) ?6 p0 z3 ua) Uninsulated live parts of opposite polarity,! P, Q* q( r- V: u1 ]9 {# ?
b) Uninsulated live parts and a grounded dead-metal part, and9 Z7 C& O9 c+ O2 Z; V
c) Uninsulated live parts and an accessible dead-metal part.; b6 W& N7 ?/ T% U+ G: X: O$ f7 @
* {7 h% r; `) l7 C- y1 v @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
) q( f$ ^! }; U9 b; Gtable 7.5 里面的这些是什么意思
2 x0 J9 g& p: I: ULive parts reliably positioned AND
; V/ n+ N* Q3 H7 Yinsulator with CTI ³ 600 (PLC = 0)b; i.e.:: C; s7 E$ q8 V: D& N% d8 H
adjacent PWB traces, lead pins of
7 V; h, [" d0 t$ O3 Jsemiconductors to their mounting, etc.
9 ]! ~) s0 h* }# ~+ I% ^1 R& F' `+ |" l
Live parts reliably positioned AND. A9 Z5 h: K( u* `" T/ z
insulator with CTI ³ 100 (PLC £ 4)c; i.e.:9 @/ A" V' H ~; g) ^% {
adjacent PWB traces, lead pins of# A1 y/ J5 U) k
semiconductors to their mounting, etc.
; F+ t% M+ k- C+ I |
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