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本帖最后由 清水白菜 于 2013-3-7 11:23 编辑 5 I* B W7 N+ ~+ |( U$ @# W
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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。
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DIRECTLY CONNECTED TO THE MAINS
: o& P& _& R. J" L6 J+ V/ Helectrical connection with the MAINS in such a way that a connection to either pole of the MAINS
/ @3 Q3 [3 z# `- u1 C, [causes in that connection a permanent current equal to or greater than 9 A, protective devices d! }9 H; w1 | ^7 o" ?; u" U2 r
in the apparatus being not short-circuited4 P1 J, j! l4 w# @# U1 f, O, g) m# I
NOTE A current of 9 A is chosen as the minimum breaking current of a 6 A fuse. |
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