|
jsspace 发表于 2013-8-12 22:24 % [8 X( T, n$ I, r+ n( `
7.4........ ! ]5 H, C" _; {( `: v7 C
PCB上LN之间是看7.4的哪一条呢. G9 E# R+ w1 ?# M& I* V/ C, }
# _; S* m2 O4 w
For Dry and Damp Locations: Live parts2 E) x* {0 ]4 p$ }
reliably positioned AND insulator CTI <1 M' }' a2 Q2 e( O
600 (PLC = 3 or 4); examples: adjacent
; L" }1 \% t Y! efoils on printed wiring board or lead wires
, {1 y5 f' N+ }/ l% gof a transistor or diode to its mountingd
. O0 W* l" K) ~( Q# s; R( C
5 O5 |6 _6 i& U# h3 v( Y' Z) o: d# t7 ^) [9 r: b0 f
还是
* ^6 w; E$ G, Q! Q C$ V
3 [" j1 L; z2 t! i9 c# |Field wiring terminals to each other and0 i, ~" ?/ E4 L) [# H0 e5 [
fixed live or dead conductive parts |
|