|
|
EN60950中电气间隙的决定 ) @/ ~+ ?. c. t8 `, 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# z* A, O! N' j0 s
When U<300Vac.rms(400Vpeak)0 V ]6 U7 R& T- y3 n. u
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k
! g' N# C2 X4 E' b) }) G2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :0 n' g f4 Q1 R* Q8 k4 G
The minimum clearance in table 2k , B! H' Y" b/ v; i8 Z9 O+ Q' R
The additional clearance in table 2L' I) \/ Q& h5 B2 W
2 clearance in the secondary circuit
1 V" U8 N) n/ d5 Y6 B一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ
. v0 w7 r: O8 h. _$ I根据工作电压,瞬态电压和污染等级查表2M即可 |
|