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好久不来,变化巨大啊,发个贴先!! l0 C. ^" u4 [- P( t% [
r" G6 a2 V+ b, z# N5 a, D1、标志不当:5 l3 ~1 p1 j) B' a' \* t
, n. x8 F' S8 d$ k8 [" \4 l) A( z a.fuse marking) }& a& F9 U6 u; e4 y
6 j2 R- q; D0 Y7 x% N6 K' s9 I* X b.power switch symbol
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0 x0 K3 O- y$ S' i; g) m c.protective earth symbol
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' U! m6 W, ?; O3 W6 I( n* Z, W d.PE wire color
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2.安全说明:' t9 _. D* x; ~0 B: X, [+ T, U
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a.Motltipower supply system' h* g1 [- T+ T$ c
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b.protective earth connection instruction
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# x5 v, d" S7 |* t7 g c.High touch current warning label
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d.Hazardous voltage
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3.绝缘距离:
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a.10N force requirement for all parts
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% w' j. ?) j- r+ R- Q9 I/ { b.misunderstand bulk capacitor's insulation specifications
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c.Ill assembly
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( z0 }' j3 |/ C) S' q d.misunderstand fan wire's insulation feature
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G: C1 Z$ p5 R: y5 ]# }" Y) r e.transformer construction fail: margin tape width and turns of insulation tape
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4.资料和元器件:2 b0 L4 \2 P$ h! \/ h$ D
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a.certificate out of validity7 @- ~+ W% w3 V/ S; \
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b.misuse component certificate: UL and European standards different5 p* G+ Y" I$ `( F" [' {% v4 M' X% p
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c.miss safety critical components in CDF: discharge resistors and bulk capacitor
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9 h" @- J8 Z( }# ]% g d.misunderstand the requirements for safety critical components: not all safety critical components need certificate
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e.misunderstand components 9 o2 o% `3 r" g/ S- \
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5.安规测试:
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a.Hi-pot fail, especially after 48hours' humidity treatment( h7 _0 I5 M( _1 P1 G
: g% v2 U' f4 K9 Q$ [0 @ b.Touch current fail! u' l, w- ]/ O. `2 Q9 E
/ u: ^' {3 @. L c.Output overload fail: temp. exceeded safety limit
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/ K/ Q# g$ G4 b, \. \, L( B! Z4 _ d.Component fault simulation: temp.on transformer and output voltage exceeded safety limit
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, Q. N. m3 n8 ?1 }3 g( F6.设计更改和生产一致性:
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a. Non-conformance between certification and production
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8 b7 s1 U% B* k8 \: [* mb. 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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