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好久不来，变化巨大啊，发个贴先！0 b: w) ~" K3 x$ ^
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1、标志不当：1 C2 G' A* F! h; I4 [& A9 u8 w% A0 j
: @/ {& b7 l; _4 X1 ]* l# n% e a.fuse marking
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; Z9 x$ m6 \; Y$ a9 v* y V9 C4 U' U' D b.power switch symbol
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c.protective earth symbol& `* @% a2 N7 t+ t3 y
1 M/ c5 x% \2 @: D+ W5 M) M( H9 h d.PE wire color6 `8 v3 k }5 u3 s( m( g
/ w3 m: T0 } T$ c$ u' J2.安全说明：
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+ |. G, u4 |( n a.Motltipower supply system
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8 f4 x! q a" r! C) ` b.protective earth connection instruction
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c.High touch current warning label" L7 s( u) `, j" G3 |& j
& p* i( \- q3 j0 G$ e/ n+ P' C d.Hazardous voltage) W" U& x. E- r7 H5 [/ Y N4 Z
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3.绝缘距离：1 L) J4 ?: r; s* R* {: p
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a.10N force requirement for all parts $ y$ Y* ^4 b# u2 W0 n) ]
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b.misunderstand bulk capacitor's insulation specifications P' I# D M9 r4 Z! ]7 C) P: N
, I8 Q. |% K: W7 H T c.Ill assembly' z. F( @! ]7 T
+ A4 a1 W/ [( i* Y- w/ }! u3 ~
d.misunderstand fan wire's insulation feature & T/ Y2 v- s6 I! k2 i" ?+ m
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e.transformer construction fail: margin tape width and turns of insulation tape. f& _. h% [4 a6 S! w
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4.资料和元器件：5 y7 W/ [# }; P& ]2 }8 _8 M: X
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a.certificate out of validity
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0 X d% O6 w7 }+ }7 s! z b.misuse component certificate: UL and European standards different
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0 V5 ~& F, A; [7 i; J [ B c.miss safety critical components in CDF: discharge resistors and bulk capacitor+ P' v9 H* g7 i3 ~. z
, j, i0 f. X& F; M( r) E9 F d.misunderstand the requirements for safety critical components: not all safety critical components need certificate4 I. ]% V4 w$ y, S6 A4 s
# ^: w0 ~9 s2 q J# z e.misunderstand components
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# X4 n' a( z, a+ D p8 @$ o5.安规测试:
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a.Hi-pot fail, especially after 48hours' humidity treatment5 `1 p) y) V! Q0 n2 b. e" B
+ y) J" ]- T- d: @# Q
b.Touch current fail
3 ?4 ]: Z' o. m
) k" I* U5 k5 v) `; N: n c.Output overload fail: temp. exceeded safety limit+ l/ }7 |6 u, G& v5 t) W
* j' b: k! i; y! g1 E' V d.Component fault simulation: temp.on transformer and output voltage exceeded safety limit
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3 i5 o& R8 Q' j6.设计更改和生产一致性:
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; s5 C& B/ U' [$ S$ t0 E* t% Da. Non-conformance between certification and production0 W9 |3 m. ~0 d
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b. 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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发表于 2007-9-1 14:06
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