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7.8.2 Minimum spacings on printed wiring boards and for board-mounted components shall be not less5 U( b- c7 `5 E, ~1 Q ^; V6 ~9 H
than those shown in Table 7.5 between:
% |; l- D4 ?; M! j# \: m: D1 wa) Uninsulated live parts of opposite polarity,
! s% }) ` Y" m7 m qb) Uninsulated live parts and a grounded dead-metal part, and
. b! s: H/ k' X# h/ w' E' r ]$ ^c) Uninsulated live parts and an accessible dead-metal part., w. R. g4 [- ]6 \* \
8 k$ N$ P. e* \& M2 Q5 [, R7.8.2 里面说的是不同极性距离，但是在table 7.5里面根本没有啊
+ z! j# O: O! l- Z) z3 K9 { jtable 7.5 里面的这些是什么意思
$ P% N* J% i2 N! @! E6 w- @Live parts reliably positioned AND
$ R# N, \' ~% ?" w8 [insulator with CTI ³ 600 (PLC = 0)b; i.e.:
, M" R7 O7 s* `, y0 [adjacent PWB traces, lead pins of
4 ?/ i3 U) j/ @0 ~. x' Ysemiconductors to their mounting, etc.
$ r8 N& F6 ^% W* c5 f% x
5 a7 e3 i+ q& rLive parts reliably positioned AND5 o) |4 R7 W$ c1 p! a. u: g
insulator with CTI ³ 100 (PLC £ 4)c; i.e.:" D2 q" X. P8 U
adjacent PWB traces, lead pins of# V" A4 H; y4 ]: w. b- G
semiconductors to their mounting, etc.% \; ?5 Q4 v6 K; D0 y- e6 W. M( W
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