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好久不来,变化巨大啊,发个贴先!* I: b/ ?+ K, F* h' P* l! c' [- h
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1、标志不当:
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4 c1 R" A/ H+ T( M a.fuse marking
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" k3 M# m1 g! L$ x, Z: y b.power switch symbol+ R3 Z R% o1 _
# S" |% q( p5 y2 O6 N% J7 K c.protective earth symbol4 v. _( K% {! m; q6 _+ y* e# \5 b
, T) R* T9 @. g, i+ H d.PE wire color
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! A# ?7 B3 r% Z f2.安全说明:; a+ `3 q) Q8 I8 Z* s5 N* B
7 n( D5 d, _( w a.Motltipower supply system
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b.protective earth connection instruction
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c.High touch current warning label- A& A$ b% k0 n" A
9 U6 a& `! C) O1 h4 c d.Hazardous voltage: X& e2 F9 d3 y. t R
, Q h) F3 ^+ \; E3.绝缘距离:) P! ~- j- @3 r5 X. e
) D5 E2 |9 \& ^2 @% E4 E a.10N force requirement for all parts 9 x u: z0 |$ [( y- I" l$ k
5 k0 a1 Z& O8 |) E N* S4 S4 p; U( ` ] b.misunderstand bulk capacitor's insulation specifications) K; L, y& B; c# t
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c.Ill assembly8 N0 `2 i! D- i) I# B
4 i4 i4 K7 P* w d.misunderstand fan wire's insulation feature ; Z5 {' ?' b' O
% @- o; H( n8 r e.transformer construction fail: margin tape width and turns of insulation tape2 I( i8 ]" l& ~( j
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4.资料和元器件:$ T" N8 A% {; R; K% \. q2 c1 O
& _) c) z, C. ]! w; J; T a.certificate out of validity
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* \: E# @8 d2 Q1 i8 g' T3 Y C/ b6 Q b.misuse component certificate: UL and European standards different* O" ?. i3 k% Y, R2 p
; p8 @& w: S( H3 a) c" e c.miss safety critical components in CDF: discharge resistors and bulk capacitor
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d.misunderstand the requirements for safety critical components: not all safety critical components need certificate
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. {4 A! q9 S& ]* |1 u e.misunderstand components
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5.安规测试:
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9 p4 U5 s, N( I# U- j2 P2 ]* x, J a.Hi-pot fail, especially after 48hours' humidity treatment
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8 a8 D7 F% ]. `& r b.Touch current fail6 Q' \2 \8 c6 ?% Q5 k: p
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c.Output overload fail: temp. exceeded safety limit' s" H- f8 g; Z9 S& D+ ?
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d.Component fault simulation: temp.on transformer and output voltage exceeded safety limit
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; u, K; b0 @! x6.设计更改和生产一致性:+ d- D% u# {/ ^8 \6 V. r
/ f( [+ m7 j& r8 Na. Non-conformance between certification and production
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; M7 c3 [+ S, X" ^: h! fb. Label format
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7.PCB Layout图提供不对,只提供了器件装配图,没有走线图。 |
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