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本帖最后由 清水白菜 于 2013-3-7 11:23 编辑 + v% {9 G- Q5 }! v$ D9 v
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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。, k) H' _9 n6 E7 W/ }, `
2.4.3( p( o. o- j' i% J
DIRECTLY CONNECTED TO THE MAINS
& _! a* \* K7 H0 t1 v* qelectrical connection with the MAINS in such a way that a connection to either pole of the MAINS
7 {8 n/ ]. @7 Hcauses in that connection a permanent current equal to or greater than 9 A, protective devices
5 e( r# q1 Q2 ?& Win the apparatus being not short-circuited+ J2 E {8 V7 M8 D1 ?
NOTE A current of 9 A is chosen as the minimum breaking current of a 6 A fuse. |
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