|
|
LED电源做UL1310标准
引用第10楼shenlinlqcel于2011-03-21 14:55发表的 :
1 @7 o' g) `. f) n B) f+ v2 f6 o9 S P3 W
: |6 [, ^) R, d1 W
...............251-600(353.6-848.5)基本绝缘距离为6.4mm,加强绝缘还要乘以2; L0 g* j e& O+ g2 p" w- T
1 F) {+ L" O: K0 d/ T. G( T- r& X3 N
$ X! C8 d( X- d2 Y# ?' f$ Y.......
: y: {# Z) M! I; x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). c+ f }% h$ e: p! y8 s7 d3 i
24.12 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 2097.3 e9 Z- D: {( k5 @& Z: T6 G
3 [+ g% s2 ?7 ]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. |
|