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EN60950中电气间隙的决定 ; f9 R% i4 {: ]0 K) `; i) j& S. n# z
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
2 n% S7 o$ P5 e( R9 UWhen U<300Vac.rms(400Vpeak)
8 `7 F# o2 B5 H( j( e1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k
% d9 z2 z! K- v3 n; ]2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :3 `/ x9 z& G2 z7 y+ Y, m. w* G: a. r) i
The minimum clearance in table 2k 5 |& H7 e4 t' A/ R
The additional clearance in table 2L
' A3 h5 H5 |; o) ~" }2 clearance in the secondary circuit
, B9 u8 v( _( \2 N3 K* S! s一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ
, ?6 l4 b( u1 F7 N' O$ \1 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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