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[电源产品] UL60950 data sheet 学习系列(二.1 | 二.2)

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发表于 2012-2-23 18:44 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
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本帖最后由 wawyp 于 2012-2-23 18:51 编辑
1 X) X( w+ r! s6 z1 h- v/ D; F/ l# v" R- V, a/ ^, U
此为一adapter,Rated input:   100-240V    0.35A      50/60Hz      Single Phase
$ u4 W1 n$ e2 M6 H& F/ ~1 h                         Rated output:  5V   2A * C0 N) V: u# C$ K) H  p2 G
                         Maximum Output Power: 10W5 G. p0 ~$ S) W8 R' R: Z2 \' e
                         Maximum Ambient: 40 C(度)
; F2 S, c% e* M" R7 O& c" N希望安规前辈能对data sheet中的点进行讲解(标准的理解,本项测试的本质,每项被测数据的测试方法,仪器选用的原则,测试过程中的注意事项),以供大家交流讨论以及新人学习之用,谢谢!  n/ \, R$ y; K( y+ K1 G

; {, Y) r4 I$ G此节有2个版本data sheet,都放上来
% l8 `5 P- ?- a) Z) l1 _二.1. ~0 ?0 ]3 _8 ]; A% V% r7 y% ]
1.5.7.4, 2.4.2 – DOUBLE OR REINFORCED INSULATION BRIDGED BY COMPONENTS
This test was conducted after Electric Strength Testing of the insulation.
METHOD
The unit was connected to ___ [V ac, __ Hz ] [V dc]. An IEC leakage current meter described in Annex D of UL 60950 and a switch were connected with the bridging component __CY1__ , The measured current was recorded.
Measuring instrument used for test:
Annex D.1 – Simpson 228
9 g! b3 d2 `1 k! \' g
              [ ] Other__________________
[ ] Annex D.2 – [ ] Simpson 229 -2
              [ ] Other__________________
Measurements were made under both normal and single fault conditions as notes below.
Y1 Capacitors were subjected to single fault conditions.
RESULTS
Location ( Component ) :   CY1
Condition
MIU
Normal

( j0 A  f0 e9 R4 _8 ^+ d; u+ I" b
The circuit”s available current [ complied ] [ did not comply ] with the current limits of 0.5mA rms ( 0.7 mA pk)
Comments:CY1 = 2200pF

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NOTES TO LAB:
1. The current measured through the bridging component and the Annex D measuring instrument shall not exceed 0.5 mA ( 0.7 mA pk).
NOTES TO ENGINEER:
1. Components subjected to single component fault conditions include IEC 384 -14, U, Y, Y2 or Y4 capacitors, or resistors which bridge double or reinforced insulation. IEC 60384 -14, Y1 capacitors were not faulted.
( S6 d, V+ n, Z0 w
二.2
1.5.7.4, 2.4.2 – DOUBLE OR REINFORCED INSULATION BRIDGED BY COMPONENTS
This test was conducted after Electric Strength Testing of the insulation.
METHOD PART1
The unit was connected to ___ [V ac, __ Hz ] [V dc]. A 2000Ω non-inductive resistor and a switch were connected between the load side of the bridging component __CY1__ , and [ protective earth ] [ neutral ]. A storage oscilloscope was connected across the points under consideration. The switch was closed and the following values were recorded:
           V p – Peak
           V dc – dc Voltage
           A p – Peak current = V p/2000
           dc – dc current = V dc/2000
           kHz – Circuit frequency in kilohertz
  •   In addition, a photograph or the waveform was made.
  • Measurements were made under both normal and single fault conditions as notes below.
    Y1 Capacitors were subjected to single fault conditions.
    RESULTS PART1
    Location ( Component ) :   CY1 to [ protective earth ] [ neutral ]
    Condition
    Volts , peak
    Volts , dc
    mAp
    mA ,dc
    Frequency kHz
    Normal
    The circuit”s available current [ complied ] [ did not comply ] with the current limits of a Limited Current Circuit.
    Comments:
    沙发
    发表于 2012-2-23 19:46 | 只看该作者
    此测试属于LCC测试项目。
    板凳
    发表于 2012-2-25 22:38 | 只看该作者
    Lcc 限流电路判定
    地板
    发表于 2012-3-17 20:31 | 只看该作者
    LCC 测试一个北美的要求,一个欧洲的要求! e& G+ d0 ~. t! y& Y+ S' m
    测试时输入电源的频率对测试有很大的影响,注意选对AC source的频率
    5#
    发表于 2012-3-20 11:11 | 只看该作者
    第二个是要求把2k电阻一段串到电容次级另一端接地线(3pin)或零线(2pin)?
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