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7.8.2 Minimum spacings on printed wiring boards and for board-mounted components shall be not less5 _' x) S! v3 k8 Y; U$ Q
than those shown in Table 7.5 between:
0 S, v6 q/ v/ u7 _a) Uninsulated live parts of opposite polarity,1 f* y* O& H7 q) G
b) Uninsulated live parts and a grounded dead-metal part, and: p% S& U8 c1 t/ [" O+ a
c) Uninsulated live parts and an accessible dead-metal part.
' i8 r9 }9 `% A) a
+ ~* W# w% {, w& h7.8.2 里面说的是不同极性距离，但是在table 7.5里面根本没有啊
' [ a; { f" ltable 7.5 里面的这些是什么意思1 `) s( C/ }7 q* t1 m& ]4 s
Live parts reliably positioned AND2 ^5 D1 c8 m( |7 g$ d# ~
insulator with CTI ³ 600 (PLC = 0)b; i.e.:& P0 j' u/ D, [! ~* y
adjacent PWB traces, lead pins of& C; G) \& d4 Y6 J6 c' u. B' ^7 j
semiconductors to their mounting, etc.. \% r- V7 j; Y; k' d9 N$ @
; x4 ?' {- z& R, }$ a& lLive parts reliably positioned AND3 r! Y- _* v2 |
insulator with CTI ³ 100 (PLC £ 4)c; i.e.:: p! V. x0 u3 p3 i2 D6 m7 _
adjacent PWB traces, lead pins of8 I0 t: n' h$ v
semiconductors to their mounting, etc.
% ]8 S6 X+ O" M0 W6 U |
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