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EN60950中电气间隙的决定 7 ?4 l2 {% K5 ]8 H& I
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
6 t6 N; r6 S+ ^* C X$ xWhen U＜300Vac.rms(400Vpeak)
5 `# G& i/ W |$ h1) If peak working voltage ＜peak value of the AC MAINS SUPPLY ,check in table 2k ]+ I' E7 h" _! B6 m
2) If peak working voltage ＞peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :
9 W4 B& H( ~ rThe minimum clearance in table 2k
# _& M% S$ T4 ~. }( `: XThe additional clearance in table 2L
& [9 g0 @5 j" F4 A4 L8 O, u, o2 clearance in the secondary circuit ! B$ I3 k$ w2 H) q' x$ s
一次电路的过压种类为Ⅱ，二次电路的过压种类为Ⅰ% ^! Q1 x0 P/ ^8 t, L6 v/ }
根据工作电压，瞬态电压和污染等级查表2M即可 |
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