|
|
本帖最后由 清水白菜 于 2013-3-7 11:23 编辑 " F& c( V& b. d- R- e
% j. l: [) F; _. {) J5 l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。; K0 G( f5 ^+ v, t( [7 C7 e& E
2.4.3% @$ m2 C, u7 T* k, X: x# R) z' }) g
DIRECTLY CONNECTED TO THE MAINS
$ b- `% l4 T' [5 e$ Felectrical connection with the MAINS in such a way that a connection to either pole of the MAINS- k* N, u+ S8 Q" z9 n7 e
causes in that connection a permanent current equal to or greater than 9 A, protective devices
/ _, R) d4 Z( U. p& h0 Ein the apparatus being not short-circuited
& Y% m5 `% W0 C% s) |* \; f# w% BNOTE A current of 9 A is chosen as the minimum breaking current of a 6 A fuse. |
|