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EN60950中电气间隙的决定 + ]7 S' K) l" N& k
1 初级电路之间,初级电路到地,初级电路到次级电路的电气间隙的决定7 L: p5 w: t. t8 d3 v
When U<300Vac.rms(400Vpeak)) o- @4 E6 _- h2 V. P; q, V0 [
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k * [- q% @7 Q/ ~( Z: u
2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :6 W* Q& P9 c6 h* {. q
The minimum clearance in table 2k 8 A. `- i! b) u8 k+ F, f
The additional clearance in table 2L8 c+ m& Y2 j. D5 o2 l# I
2 clearance in the secondary circuit ; N6 b5 n+ t' C- t# f4 p4 D& P' P
一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ" U+ \7 V+ X# U! [& F3 e3 d
根据工作电压,瞬态电压和污染等级查表2M即可 |
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