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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.$ m' Y+ U7 ~! f4 p6 C
3.1.9 Termination of conductors& c w* u( v3 o- B" u4 ^
Conductors shall be provided with a means (for example, barriers or fixing), or be so terminated,7 B4 r0 s' E: h: h( ^" r
that they and their terminators (for example, ring terminals and flat quick-connect terminals): o% c; W! l% @9 }
cannot, in normal use, become so displaced that CLEARANCES or CREEPAGE DISTANCES are reduced to: [. A+ z* Y7 N% a0 `) Y
less than the values specified in 2.10 (or Annex G).
; a/ U; ^% e( n, ?2 ]- U8 PIt is permitted to use soldered, welded, crimped, screwless (push-in) and similar terminations for
( {4 D4 o9 Y5 B" u: @' c5 rthe connection of conductors. For soldered terminations, the conductor shall be positioned or; O9 U& X% g& i- I
fixed so that reliance is not placed upon the soldering alone to maintain the conductor in
8 Q) L6 h1 c4 l' d+ A; dposition. |
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