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EN60950中电气间隙的决定 ( U% M' P7 y3 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
, A+ c- K& G# j4 o+ uWhen U<300Vac.rms(400Vpeak)
& x% l# v; W; F! ~$ `' b9 ^: m1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k 6 P* d6 c [5 @
2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :7 C+ ~1 c d( c: E3 y
The minimum clearance in table 2k 3 @- @( u( X- ?* D$ R" C
The additional clearance in table 2L, y6 f! g7 u( E% n! r: r
2 clearance in the secondary circuit
$ P8 H- |2 j4 h2 M, @5 U; q一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ
# M; r2 ^( E u/ D$ g6 R+ j3 C' X根据工作电压,瞬态电压和污染等级查表2M即可 |
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