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EN60950中电气间隙的决定
. v& T# n$ h4 y1 U, k1 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8 x2 i& C! P6 V( a& w2 U
When U<300Vac.rms(400Vpeak)' t- m- O" y. K4 H8 E; F
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k $ V3 v# Q! S6 i9 N9 ]: }, S
2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :
$ C; ]3 y+ T% W" HThe minimum clearance in table 2k
9 r3 ^ Q9 X4 @3 f2 MThe additional clearance in table 2L
, P9 a1 k+ Y& T3 [/ l% f2 clearance in the secondary circuit
) m! u! o: M5 j) ~2 q一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ
# z$ O% K* q: s: H: `根据工作电压,瞬态电压和污染等级查表2M即可 |
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