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EN60950中电气间隙的决定 $ X/ w# a% b, X( y4 l, o
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
, X' e) N. g3 Z! `1 t2 eWhen U<300Vac.rms(400Vpeak)6 J. {) _# u1 n6 Y9 g6 I
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k
+ X1 W! E! _% K( _2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :
$ J4 d; @! {0 E2 i' k7 X6 ]! iThe minimum clearance in table 2k 4 F# q. p' C9 B
The additional clearance in table 2L) @& G9 {8 C2 ^1 O8 H0 O
2 clearance in the secondary circuit
2 c1 m5 B* O2 K8 B一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ7 s. c& v9 A8 }8 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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