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EN60950中电气间隙的决定 3 U- t+ L' f# S0 Z8 t: x. M, J
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
4 o) e* P, z" n2 l0 _When U<300Vac.rms(400Vpeak)% \1 T5 R, Q! V9 C- `9 Q- S
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k
% {& Y% d, C( E8 h# e2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :
( s& V4 T, ~2 F5 l% o5 h8 XThe minimum clearance in table 2k
1 N* ]7 _/ z: k2 V3 q8 M& hThe additional clearance in table 2L
/ j6 d$ V( \0 }8 n2 clearance in the secondary circuit % [# V/ F" ~. D# Y# r& r- y. z
一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ# z0 o& C! [2 D: G9 j5 W
根据工作电压,瞬态电压和污染等级查表2M即可 |
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