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好久不来,变化巨大啊,发个贴先!+ W1 _( q$ Q$ b2 Q
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1、标志不当:
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a.fuse marking
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b.power switch symbol8 U5 V6 d8 Q2 Y2 @' x$ f; Z2 |
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c.protective earth symbol
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d.PE wire color; \/ c1 Q; z5 y% D' r, l
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2.安全说明:
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& m+ N6 [1 H0 c0 J- @/ s' F! C, ` a.Motltipower supply system
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# @/ @5 \$ F+ Q ] b.protective earth connection instruction
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. V' x1 q! d9 v c.High touch current warning label
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8 }) S' J) j/ |1 V/ v. W d.Hazardous voltage W; `1 ]1 ^7 ?0 `- Y8 B& |1 m0 ~* J
: S c/ y! _( I- g. H! n# M/ a4 \3.绝缘距离:, j8 y# E# A" J0 E. C& E
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a.10N force requirement for all parts / t; ?4 t5 E$ `# H: m/ \
3 _9 S! z: [; O b.misunderstand bulk capacitor's insulation specifications
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c.Ill assembly
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d.misunderstand fan wire's insulation feature
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e.transformer construction fail: margin tape width and turns of insulation tape7 h: Z0 {, [8 O3 u5 i& z! V' C
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4.资料和元器件:" S: [! y. v4 r d* \( N' A
9 i5 a# y9 X2 U a.certificate out of validity
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b.misuse component certificate: UL and European standards different
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$ l) _' a' P0 V4 T c.miss safety critical components in CDF: discharge resistors and bulk capacitor E9 e- n: r$ ^- _
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d.misunderstand the requirements for safety critical components: not all safety critical components need certificate+ e7 g) _$ {5 p# J& B, X
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e.misunderstand components 3 a" @! w* [7 N) a+ Q
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5.安规测试:
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a.Hi-pot fail, especially after 48hours' humidity treatment
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b.Touch current fail
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& F: e9 ?6 D+ }* f& \ c.Output overload fail: temp. exceeded safety limit
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d.Component fault simulation: temp.on transformer and output voltage exceeded safety limit
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( m) M$ s! r; i6 L! b6.设计更改和生产一致性:
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0 Q' G1 O) k9 h! u* Ba. Non-conformance between certification and production) {1 i* @: ~5 v9 T
" e0 g9 \1 F( D$ f9 o Mb. Label format 4 G- X1 t6 V, q: b
: V+ q3 ~; \6 D% Q% |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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