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EN60950中电气间隙的决定 9 J. c6 b5 m3 E8 a* Q: _
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
/ m) o/ z* H# C9 u( c2 C# BWhen U<300Vac.rms(400Vpeak)
* ]! R8 x8 I7 q" {. e$ e, L. c1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k 2 @* H# X9 h% x4 w* _" ]. \6 I
2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :
/ u& p2 _5 r" Y& NThe minimum clearance in table 2k : S( Q. }+ J* c4 g6 J
The additional clearance in table 2L" t7 G! m0 @+ I+ s
2 clearance in the secondary circuit
, y0 a: d7 Z/ l" N一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ- u4 d) h. } p9 O1 H7 D
根据工作电压,瞬态电压和污染等级查表2M即可 |
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