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7.8.2 Minimum spacings on printed wiring boards and for board-mounted components shall be not less7 ^& L7 h; w6 x# o4 L! f* U( z& W
than those shown in Table 7.5 between:: o3 R; I3 s, x O) _$ l
a) Uninsulated live parts of opposite polarity,
2 G8 N8 |4 Z6 C* [% K/ M6 rb) Uninsulated live parts and a grounded dead-metal part, and
4 t _& {+ _: a5 }5 j& s5 f! \8 | fc) Uninsulated live parts and an accessible dead-metal part.0 I+ h9 {0 c; z6 h
8 H+ [* O2 a$ {# k+ x/ ?% I7.8.2 里面说的是不同极性距离，但是在table 7.5里面根本没有啊% p! W9 v4 E" j( [
table 7.5 里面的这些是什么意思
* R" P4 Q/ r6 R9 L( L6 gLive parts reliably positioned AND
9 ?& X- O' o0 B+ Einsulator with CTI ³ 600 (PLC = 0)b; i.e.:
* L5 x( s0 Z# k( Ladjacent PWB traces, lead pins of5 ~8 i) z& z* o% G
semiconductors to their mounting, etc.
( G. z" _1 F- d5 v9 U1 E- t; B; V' [: }1 D- x, ^# ?
Live parts reliably positioned AND' O9 a) }# \2 f+ f* s5 I# O8 l
insulator with CTI ³ 100 (PLC £ 4)c; i.e.:' L# n/ |- Q' c7 A I: s2 h# s
adjacent PWB traces, lead pins of! j. p! b7 f/ E- x! I
semiconductors to their mounting, etc.
' r2 E& d: C5 A( }% J9 L |
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