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发表于 2012-8-16 14:26
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终于找到这要求了, 见下面条款. 所以电源输入输出线,变压器次级引出线除了焊在PCB 上面,也要加胶固定.# T& Y0 |' V5 Y- }1 e% I
3.1.9 Termination of conductors
6 }" T; [. _3 U8 W# B* L v8 N' v0 AConductors shall be provided with a means (for example, barriers or fixing), or be so terminated,1 u! a' j j/ V7 ]+ j" `
that they and their terminators (for example, ring terminals and flat quick-connect terminals). W' N! v# C) K0 {
cannot, in normal use, become so displaced that CLEARANCES or CREEPAGE DISTANCES are reduced to4 \% G5 r: U' X6 m- z1 H! }
less than the values specified in 2.10 (or Annex G).: Y, X' ? g! `
It is permitted to use soldered, welded, crimped, screwless (push-in) and similar terminations for$ |+ ~/ d9 _3 x5 T0 i- w/ q
the connection of conductors. For soldered terminations, the conductor shall be positioned or
+ z) I* [! d, e9 k6 Xfixed so that reliance is not placed upon the soldering alone to maintain the conductor in& z1 p" ~6 @; i- b b+ L5 {
position. |
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