|
LED电源做UL1310标准
引用第10楼shenlinlqcel于2011-03-21 14:55发表的 :- b; B, T+ D% N; A! ]' Q9 x
# @( p) Q6 f5 I/ I* v1 K+ }
5 U! w3 g$ Y. M) p...............251-600(353.6-848.5)基本绝缘距离为6.4mm,加强绝缘还要乘以2
6 p2 w. T# m: M& n" p5 ~: S, [! m$ U7 e; Z* J- I9 A- E; U
5 B! \& @% Y9 W; q.......
" s: N- p- _9 p' Z+ e! J, X% L依照UL1310, 可以不考虑双重绝缘的, 除非产品有此标志(通常UL1310的产品都不标“回”标记)
; d+ y: L/ l5 k- K& x) c5 D8 d( Q24.12 Units, which are marked ²Double Insulated² or marked with the symbol for double insulation, shall be investigated to the Standard for Double Insulation Systems for Use in Electronic Equipment, UL 2097.
: P/ X; v$ G' w9 `' i6 p/ l5 \3 B$ L9 u1 B
简单的说,不标“回”标记的产品内所有考虑的绝缘距离都依据表格24.1或24.2, 无需要额外乘2. |
|