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EN60950中电气间隙的决定
" b2 q0 q1 N; C$ C5 y6 b0 }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- d& R; Q" c6 k$ K: j! X, m2 C
When U<300Vac.rms(400Vpeak)
8 x6 ]& f& T7 g3 m5 [1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k / _ C# {; ~2 P% q2 E5 f: i. b5 [
2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :
5 j0 n1 R! s' a, s, x" ~The minimum clearance in table 2k 7 Y1 n ?" H& I; a' C! q' [6 g
The additional clearance in table 2L; A3 r1 }6 X T5 i3 ?
2 clearance in the secondary circuit
3 p' w" Q+ i! m* k一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ, a5 E X+ \9 L I* b
根据工作电压,瞬态电压和污染等级查表2M即可 |
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