标题: IT类EN60950-1 [打印本页] 作者: 520168 时间: 2014-5-16 18:02 标题: IT类EN60950-1 各位大神,. n( m5 n/ k7 ~
IT类EN60950-1电源产品放电测试,有这样的要求吗?(CX1只并联了一组放电电阻，在故障情况下（open R1）， 放电测试会fail，需要再并联一组放电电阻。) 1 X: j9 Q/ _2 ]( i2 e根据那个条款?2 u( k+ _* _8 g5 C
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谢谢! 9 J! P7 q: b6 p; \, X作者: cylam128 时间: 2014-5-17 09:03
2.1.1.7作者: 520168 时间: 2014-5-17 10:32
没有说要在故障情况下（open R1）. ( \ |: s' |1 |1 K7 j2.1.1.7 Discharge of capacitors in equipment8 n/ Y% l2 r4 \) s
Equipment shall be so designed that, at an OPERATOR-accessible external point of . s5 w! ~% w+ ]; G1 Y
disconnection of a MAINS SUPPLY, the risk of electric shock from stored charge on capacitors 5 f8 @" C2 K& Q3 i& U( ~- w- R
connected in the equipment is reduced. No test for shock hazard is required unless the 8 l- ]- t4 j6 H6 t+ D7 @
nominal voltage of the MAINS SUPPLY exceeds 42,4V peak or 60V d.c. 4 ?. W8 d5 h4 _4 t$ {
Compliance is checked by inspection of the equipment and relevant circuit diagrams, taking 0 W( {/ c* z% finto account the possibility of disconnection of the supply with any on/off switch in either 0 ~ \, q6 R0 }& {: u+ V; Xposition., V: ?; K }. O+ l* ?
Equipment is considered to comply if any capacitor having a marked or nominal capacitance + ]5 P8 u8 Q5 V
exceeding 0,1 µF and in a circuit connected to the MAINS SUPPLY has a means of discharge 3 J1 s1 |6 z- a
resulting in a time constant not exceeding:. [; l8 D8 f( B7 B- U5 u
− 1 s for PLUGGABLE EQUIPMENT TYPE A; and 6 n* B# a8 r9 z% I− 10 s for PLUGGABLE EQUIPMENT TYPE B. 9 c( s8 S3 F7 b2 @ z
The relevant time constant is the product of the effective capacitance in microfarads and the 1 Q4 @ J' y& w' heffective discharge resistance in megohms. If it is difficult to determine the effective ( c, J) C8 o9 {capacitance and resistance values, a measurement of voltage decay at the point of external # p5 T6 ` @* O$ G. H" adisconnection can be used. When conducting the voltage decay measurement, the result is : _/ B5 K9 g% n% @8 fthe measurement is either made with, or referred to, an instrument having an input impedance " |+ q$ ?" J) n# }# \4 D% cconsisting of a resistance of 100MΩ ±5 MΩ in parallel with an input capacitance of 8 @+ i# Q' R& T; i k; ?
20 pF ±5 pF 25 pF or less.作者: 长征 时间: 2014-5-17 11:48
60950 不需要评估异常情况的放电测试，60065 才要评估作者: cylam128 时间: 2014-5-17 13:26
不需要评估异常情况作者: chocochang968 时间: 2014-5-17 16:24
60950中的放电测试没有要求故障条件下也满足，只要正常通过就可以了。作者: 安工 时间: 2014-5-17 21:39
楼上全部正解！作者: dengwx 时间: 2014-5-19 12:54
电容放电只做过正常情况的！作者: 520168 时间: 2014-5-19 13:51
EN 60065要求放电测试是在异常的情况下做的, ( ^1 }. o$ N3 p6 ~而60950中的放电测试要求正常条件下进行,听某机构说以后 0 I% ?: x4 e! g! k5 O3 {60065 和60950要合成一份标准,所以要求放电测试是在异常的情况下做作者: sky0805 时间: 2014-5-19 14:14
原來是標準要合併一起作～那以後規範不好做了...作者: dengwx 时间: 2014-5-19 14:16
哇哦，原来楼主做过合作后的标准了呀，厉害厉害！作者: 520168 时间: 2014-5-19 14:53 ,没有做过,我也是门汉.作者: 520168 时间: 2014-5-19 14:54
我也是门外汉,在这向各位大神学习滴.作者: Aries 时间: 2014-5-19 15:24
以後950+65合併的標準是IEC 62368-1, 現已有ed.2的版本, 聽說UL, TUV/Rh, 都有人做過了此標準的CB test report作者: JIAJIACHEN 时间: 2014-5-19 15:55
62368，2S后读值且考虑异常作者: JIAJIACHEN 时间: 2014-5-19 17:05
电阻未认证或是不符合电阻相关测试才要异常测试的.作者: jianjiji2150 时间: 2014-5-21 16:57
,没有做过,我也是门汉.