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EN60950中电气间隙的决定
" O4 h* G9 C }* ]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/ }: u/ H: D+ X8 M
When U<300Vac.rms(400Vpeak)
b6 w( Q+ ? P1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k 5 p: M0 q* H7 M- b% |2 Q, l: A4 U& D
2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values : j$ e1 K3 x- Q6 h2 ?5 a- _3 M1 {3 V
The minimum clearance in table 2k c, F/ G0 P, R6 D' H0 @: L2 b
The additional clearance in table 2L
! u* J6 M, O/ p/ B( o g2 clearance in the secondary circuit _6 Y c0 J Q) e8 s5 q4 m
一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ
9 `& X2 {' X5 N( z根据工作电压,瞬态电压和污染等级查表2M即可 |
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