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本帖最后由 清水白菜 于 2013-3-7 11:23 编辑 ! }4 S7 Y! _: p7 Z; c5 E9 _
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提供个IEC 60065里的要求供参考: 初级保险丝小于6A的,保险丝后面的绝缘可不考虑, 大于6A的(考量为DIRECTLY CONNECTED TO THE MAINS),保险丝之后及整流桥之前都必须满足基本绝缘。# L' ]/ |( Y7 D0 j
2.4.3
& u7 ^ u9 L. B1 w" t/ G% vDIRECTLY CONNECTED TO THE MAINS
5 V. w D& y; B7 Z7 Qelectrical connection with the MAINS in such a way that a connection to either pole of the MAINS- z, P" S0 X2 W0 k' M8 V' V2 V
causes in that connection a permanent current equal to or greater than 9 A, protective devices
# f6 `* T2 U4 P* E/ O3 t) v+ _! U3 {in the apparatus being not short-circuited- ^2 Y* e9 b0 m" y/ B2 F
NOTE A current of 9 A is chosen as the minimum breaking current of a 6 A fuse. |
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