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EN60950中电气间隙的决定
3 p, d# F7 A+ m- o1 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
" ^: L! P, P+ pWhen U<300Vac.rms(400Vpeak)8 w, h1 z+ q! a# M/ J
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k
6 ?9 V# K6 D# ]. P2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :4 D6 u. d' W" W! X: x; Q
The minimum clearance in table 2k
! H# F+ z5 T# J6 i/ HThe additional clearance in table 2L& K6 \3 u! X% K
2 clearance in the secondary circuit
7 u5 g, ~6 D/ d; c一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ
( Y. t ^2 c$ Z7 I& t根据工作电压,瞬态电压和污染等级查表2M即可 |
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