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EN60950中电气间隙的决定 # ?: J9 j t- 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
( C. ~8 i5 I2 b) jWhen U<300Vac.rms(400Vpeak)1 H# C# T8 x; i4 u9 I, g6 ~" E
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k . u$ X) a; x7 B' X
2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :% o- O/ o. f5 W! Z8 c+ g& S
The minimum clearance in table 2k
% y9 D$ E& m& U d8 Q8 \The additional clearance in table 2L/ }# G( q) `6 }/ l) `6 u" B
2 clearance in the secondary circuit * z# Q/ ~0 s) ~% a
一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ
) Z" C9 z y3 Q; I根据工作电压,瞬态电压和污染等级查表2M即可 |
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