标题: 关于UL8750-2015距离的问题 [打印本页] 作者: 琥珀流云 时间: 2015-11-12 11:27 标题: 关于UL8750-2015距离的问题 7.8.2 Minimum spacings on printed wiring boards and for board-mounted components shall be not less + E/ i( v6 T, _. C0 ethan those shown in Table 7.5 between: 6 z G: F2 ^ ]5 s/ [0 p2 Pa) Uninsulated live parts of opposite polarity,! G+ V7 A& q% e1 n
b) Uninsulated live parts and a grounded dead-metal part, and # w9 Z( o, {/ }0 Jc) Uninsulated live parts and an accessible dead-metal part. 8 a5 w7 G+ m) M4 F8 Z: b" F5 F3 Z( N( [8 q/ U0 s5 {" L
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! F A5 Y, ?/ R) d+ W
table 7.5 里面的这些是什么意思 ) }1 {$ ]* J) w0 c: I. X* nLive parts reliably positioned AND4 u$ C% t1 A2 U) \ F' V6 O
insulator with CTI ³ 600 (PLC = 0)b; i.e.:& H! k( [6 ?) a+ c2 i
adjacent PWB traces, lead pins of% E) C' n$ H7 [
semiconductors to their mounting, etc. 1 g" H- u9 J0 W$ u7 d9 s2 Z ' V* v2 {0 W" a D; Z/ ? ]Live parts reliably positioned AND ) w) i& o: `; u; t2 c, ?2 _9 T ainsulator with CTI ³ 100 (PLC £ 4)c; i.e.:3 s ~. Q/ h* R
adjacent PWB traces, lead pins of. W5 f9 s. {' j4 s$ P( M* S
semiconductors to their mounting, etc.$ n2 @) g5 T" l9 Z; ~8 [8 Z0 s