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EN60950中电气间隙的决定 9 M. V x, F( V( d* ]6 D
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
& T; z7 p+ b, R+ U* j6 }3 M' tWhen U<300Vac.rms(400Vpeak)* h" x" ~/ G7 r; \
1) If peak working voltage <peak value of the AC MAINS SUPPLY ,check in table 2k
8 [6 z: f, x! |7 Y2) If peak working voltage >peak value of the AC MAINS SUPPLY ,the minimum clearances is the sum of the two following values :0 r w5 C$ Y- y" ]
The minimum clearance in table 2k ( ^2 _; h, B# ~) ~; o$ L( E
The additional clearance in table 2L1 B$ @( a+ E; _, j; C. n- k. g
2 clearance in the secondary circuit
) s* G8 t7 O4 I' ^一次电路的过压种类为Ⅱ,二次电路的过压种类为Ⅰ _) f7 N- l. V4 x$ O
根据工作电压,瞬态电压和污染等级查表2M即可 |
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