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EN60950中电气间隙的决定 ( G# U8 J( J1 _$ S7 B
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
" |+ }" W& b+ f+ E5 dWhen U<300Vac.rms(400Vpeak)* g7 k( r" e$ T& z2 }1 _
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k
7 _; P) }% s, I" M4 k5 q; [2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :1 N3 G$ R4 p! s/ d3 h
The minimum clearance in table 2k ) |+ d% v! a; d$ x
The additional clearance in table 2L
, R' S# v9 f5 J2 clearance in the secondary circuit
) F- O. e \: J* [) Z/ h一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ# X& F/ ]8 N. c% C5 S, {
根据工作电压,瞬态电压和污染等级查表2M即可 |
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