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好久不来,变化巨大啊,发个贴先!9 ~( Z, @3 z# A" }' [- D
' `9 |6 m+ O- e: t* t1、标志不当:0 V0 p! T! @8 I
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a.fuse marking
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b.power switch symbol) P3 Z J5 R1 h7 ^, D4 _
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c.protective earth symbol
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9 {8 o2 i) h/ k: \6 f" k+ N, y d.PE wire color, E- `+ N- `9 {0 m2 U8 }
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2.安全说明:
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a.Motltipower supply system6 o# o1 z3 I, n# i2 ]6 E
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b.protective earth connection instruction
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c.High touch current warning label1 _( g5 {5 y6 p, |+ O1 v
1 _) T8 i: [8 S* w9 w/ I2 R0 X* _ d.Hazardous voltage
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3.绝缘距离:
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a.10N force requirement for all parts 9 S! `! @; t8 ~& _* C; v' u
6 G* ]3 u: } E! e# a; F0 f b.misunderstand bulk capacitor's insulation specifications- e: `6 ]/ `: I& q! A" x: {
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c.Ill assembly X4 G0 _3 z0 V0 d7 O, U# h$ w* D
. @( E) a8 U8 M: i d.misunderstand fan wire's insulation feature & s4 @) |; ]" P4 j6 E: f( }
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e.transformer construction fail: margin tape width and turns of insulation tape
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4.资料和元器件:
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* P' F2 @7 ^6 c9 a a.certificate out of validity
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b.misuse component certificate: UL and European standards different; g8 M6 X, g# A
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c.miss safety critical components in CDF: discharge resistors and bulk capacitor
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9 o; r$ R4 ~9 d" v. k d.misunderstand the requirements for safety critical components: not all safety critical components need certificate
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e.misunderstand components
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+ _+ l. W( |* Z# v* b7 t3 B5.安规测试:1 Q1 Z, u/ l; C1 P# X; _% V
2 U/ @' E7 Y; c- D5 v% T a.Hi-pot fail, especially after 48hours' humidity treatment4 c9 u* Z/ ]8 N7 N0 c
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b.Touch current fail8 z: d( ^5 L% t& w+ b D' Q r% e
! B( j' a6 \5 n7 k: Z c.Output overload fail: temp. exceeded safety limit5 {' n0 X, m, j1 R0 _5 O) q( j
* L& s! j- |9 T: `) }9 b7 e d.Component fault simulation: temp.on transformer and output voltage exceeded safety limit8 T2 ^7 A! O! k6 s+ |
; Q. g# _' g6 F- ?. ]$ k( C% A. e6.设计更改和生产一致性:* ]$ `- z: V6 b Y7 a4 m' q
7 X6 M( W7 F2 q3 ]* da. Non-conformance between certification and production' Q3 c p j, ~
, U3 n0 \% g. w: Z# f$ _# x/ Q* k/ Vb. Label format " y& p5 M1 L1 K
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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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