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LED电源做UL1310标准
引用第10楼shenlinlqcel于2011-03-21 14:55发表的 :
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* v/ N' p0 }" V; f...............251-600(353.6-848.5)基本绝缘距离为6.4mm,加强绝缘还要乘以2
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( v0 l$ u% |% m8 o8 G' [3 h....... 7 F+ o& ?1 B3 e7 \" W
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)8 w0 |& h Q* r+ C' E
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. S# x& f* {4 I$ j8 L0 R- p4 y2 O2 Q
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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. |
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