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标题: 关键元件中外壳可以认为是基本绝缘的元件 [打印本页]

作者: sjm2005    时间: 2011-5-3 10:45
标题: 关键元件中外壳可以认为是基本绝缘的元件
请问一下:关键元件中,外壳可以认为具有基本绝缘的元件有哪些?
# j% X2 l" Y, B' E+ V' @我知道Y电容是可以认为基本绝缘的。那压敏电阻,X电容,relay,IGBT,MOSFET这些元件呢?
( f. Y: Q% G# Y4 ~$ b* \$ u还是看每个审核人自己认为的?
" [2 V2 a- z' i- Q: \谢谢
作者: ye_lin86    时间: 2011-5-3 10:54
我的理解是要考虑元器件使用的位置,用途,所在电路的情况
作者: 学学安规    时间: 2011-5-3 11:11
Y电容可以认为基本绝缘是什么意思?两个脚之间吗?这跟应用有关吧,也有加强绝缘的可能吧
作者: sjm2005    时间: 2011-5-3 14:50
Y电容两脚之间看距离了。Y电容的本体对地或其他地方。
作者: sjm2005    时间: 2011-5-3 14:52
看使用的话,认证的时候怎么办。6 z* ^/ K! m. Z( j- n  K
换一个就不一样了啊。
作者: 安规007    时间: 2011-5-3 14:58
Y电容表面是基本绝缘? 那是不是意味着再包层热缩套管就可以当附加绝缘? 人手就可以碰了??我对此持怀疑态度。
作者: sjm2005    时间: 2011-5-5 16:07
Y电容外壳可以认为是基本绝缘。TUV的也认可。- M8 F& u  F. ]) ^+ u* f" k
其他的就不确定了,没有标准。
作者: 山炮    时间: 2011-5-5 23:15
CTL Decision公告
# p6 Y' r' {2 p6 H3 _% PDecember 07, 2009
7 [% s# C$ r3 Z- y4 wCTL (Committee of Testing Laboratories)即將發行的CTL decision (PDSH 0737),是說明將要求所有屬於Pluggable equipment type A的產品,其連接到市電的appliance inlet,需依照原本CTL decision sheet no. DSH-548要求的方式,來量測appliance inlet的溫度與判定要求。
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另外,即將發行的CTL decision (PDSH 0738),是說明針對符合IEC 60384-14的Y電容,除了靠近零件接腳的位置之外,其Housing可以視為具有絕緣等級,其絕緣等級可參考IEC 60950-1 2nd edition, Table 1D。9 L4 `) A5 ~% H( B
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(合用不?)
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, T3 W" S% }* Q: E4 M( V  _压敏电阻,X电容,relay,IGBT,MOSFET这些元件呢?% L6 q3 M- t# K7 I
——X电容倒是值得考虑。
作者: sjm2005    时间: 2011-5-11 15:35
山炮这些资料从什么地方来的?学习,学习
作者: aiduoxi    时间: 2011-5-11 15:39
引用第5楼安规007于2011-05-03 14:58发表的  :4 Y* k. A8 d3 o( {9 ?& t% a# z" k
Y电容表面是基本绝缘? 那是不是意味着再包层热缩套管就可以当附加绝缘? 人手就可以碰了??我对此持怀疑态度。
漆兄曾经貌似做过此类测试
作者: tomwellyang    时间: 2011-8-9 14:11
学习了,学习了,谢谢1
作者: jianshen    时间: 2011-12-22 19:47
只有Y,X电容是,其余不是
作者: lockintime    时间: 2011-12-24 15:10
[s:83学习了
作者: EVERGREEN21    时间: 2013-3-14 13:19
http://www.iecee.org/ctl/osm_she ... s.html#en6095012001 里面有说明
作者: aillafeng    时间: 2013-3-19 17:34
元器件是否作为绝缘那样看元件
作者: oscar_ye    时间: 2013-3-23 13:13
安规007 发表于 2011-5-3 14:58
, U5 G: f$ \4 x7 ], G/ YY电容表面是基本绝缘? 那是不是意味着再包层热缩套管就可以当附加绝缘? 人手就可以碰了??我对此持怀疑态 ...

% `8 N6 Q1 \" a( ~* Q" l附加绝缘穿透有要求的,家电1mm。另外,电容外壳与带电体打过耐压,我认为是达到基本绝缘要求。如果想用热缩套管,那么热缩套管1层先需要打耐压,通过后做附加绝缘需要2层以上,也需要做试验。
作者: xuxuxu    时间: 2013-3-27 12:59
OSM/EE DECISION SHEET
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Standard:  ! t8 W# X) [% h* G" ^
EN 60065:1998" \" K; _/ w) v) m' ]9 `9 u
EN 60065:2002& _2 t' @4 H/ |; Z3 E- y6 e
        Sub clause:
- x& j( g. P7 _# ?& o3 z  a/ [. b8.6        Sheet no.  
: Z9 g0 c2 K6 Q  K$ z# m+ E; E& a97/13 Y" j9 e0 ]' G6 E" q
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Page 1 of 1      
- D! Q) L, f0 @7 oSubject: ) k0 d. v' `! N$ \& Y
The enclosure of Y1 capacitor
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3 `7 V) C; ]7 p4 O        Key words:
; g) B# _/ P# @Reinforced insulation area        Meeting:
0 q4 S* g3 s% ]" ^' U# t  nOSM/EE – 1997
% u- c5 h9 \/ [% }& _5 r& \Item No. 3& J: J/ B# z3 x' q

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Question: -
* C; {! U: Z7 W" v0 GCan the enclosure of a Y1 capacitor be regarded as reinforced insulation?# w' Q; e6 M3 W9 i" u# z

7 D4 z, y6 N1 H  y  r: Y% k1 p4 u$ xDecision:
4 y/ t- `9 M* `$ H& NThe enclosure of a Y1 capacitor is considered to comply with the requirements for reinforced insulation with the exception of the area near to the leads where the insulation becomes thinner.
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9 h. D  |- B( n8 v/ ?( R8 J2 ~) o        Only the white area is to
4 V% V+ k& a' j& K        be considered as
" x9 a+ z' m1 S+ Z3 u; ?        reinforced insulation
  ?7 W! q  I4 x( c' w; b# w                                   & A  k" {* w. O* _: |8 N! O
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Explanatory notes:
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作者: xuxuxu    时间: 2013-3-27 13:42
VIENNA – OSM/EE MEETING FOR ELECTRONIC EQUIPMENT  05 – 06 MAY 20100 c  Q0 Z, d! t1 Z; g5 ?
. E( X1 O; K* t) S2 J  T0 M2 e
-ITEM FORM-
. O0 k! k! l' t7 B' iBSI – United Kingdom/N° 1/2010
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Standard:
  A2 u8 _! P& E' yEN 60950-1:2006+A11+A1. [7 C& S7 a# ~2 k+ @2 T) _2 F
and EN 60065:2002+A16 x+ w" i" a# X2 [) J' b1 M0 a
        Sub clause: ' V( b$ z3 {+ Z& y
2.10.5.6 (EN 60950-1)
) T( C$ H+ o3 j. O8.8 (EN 60065)
2 i3 s8 N1 l, y4 I        Sheet No.: / J# |( o* _, P0 {9 ^/ U
Page 1 of 1
3 Y" g3 b, d0 ?$ W# E( @% ?$ w3 iDecision 10/1) X' e! [; G7 c

* k7 ^4 c* a* j! K1 Y; L! f, n( LSubject:4 j9 [; }! N, x
Insulation on the body of electrolytic capacitors) H, \, {# }, r) [' t6 ?
        Key words:# J; q6 d" H: E6 |% ~3 t
Insulation( i% N% a8 ?+ f- u; k
Thin sheet material        Meeting:: j. ?2 S% g1 y7 M1 J
OSM 2001,
, i- r7 X! G' y% gAgenda item n° 9.6
% e% A$ [) x3 S6 G; d/ ZOSM 2010-05-05,! u) i- T; }3 W
Agenda item n° 6.1
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( y2 Y9 Q& k" U% Q7 N/ LQuestion 1) Minimum distance through insulation
+ v( D  [. {1 M, s. d- zCan the insulation of an electrolytic capacitor be regarded as basic insulation?
# o( C) U) W6 m5 Q( u/ Y8 C(see attached photo) ?& y& r9 W5 b4 @( I  x& O

" M% i3 k/ K8 k# q& ^Along the side of the component the plastic insulation will withstand the electric strength test (1500V ac). However on the top and bottom of the capacitor the plastic is stretched / bended around the edge, and the insulation can therefore be mechanically stressed. The question is, can this be accepted as long as the insulation withstand the electric strength test, without any further considerations?; P# s9 J! A$ |! X/ F& p. [' i
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8 v4 K+ m  p" A7 U, ^8 }3 A1 ?6 Z1 T--------------
' ~0 o" |( W/ W8 w$ f% qQuestion 2) A common failure mode of electrolytic capacitors causes a pressure build up within the component, which results in the capacitor expanding in size, to the point where the outer marking sleeve/insulation may split – exposing the capacitor can (normally connected to the negative capacitor terminal).. f. U3 K' S9 C! C
Is it permissible to consider that the outer marking sleeve/insulation of electrolytic capacitors, as meeting the requirements of thin sheet material (EN 60950-1:2006 Sub-clause 2.10.5.6 and EN 60065:2002 Clause 8.8), without taking into account this possible failure mode?
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- L3 b: z  w. s% h& V! Q7 w( `OSM EE conclusion: 1 decision 0 only in the minutes
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Decision 10/1:. u6 c) d1 _$ \& T8 v% b
The conclusions from OSM 2001, agenda item 9.6 was agreed to be applied and converted to Decision 10/1, item 1:
8 m( ?& g7 C; t0 O1 b0 BOn the side the insulation can be regarded to comply with the requirements for basic insulation, but on the bottom or top side all manufacturing tolerances have to be taken into account. Information of the manufacturer (especially variation due to ageing) is needed.
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7 X1 P. G; H2 {. ]& J* FDecision 10/1, item 2:
: d" h0 g" k/ [; gRequirements for failure mode are to be taken into account., `7 a' y3 a' m
EN 60950-1 Clause 5.3.9; Compliance criteria for abnormal operating and fault conditions.
6 B# _8 u- B; [/ k6 P) x" m( B60065 Clause 11; Fault conditions.
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$ x2 c2 @5 b* d+ e& r' rIs to be send to MT1 and MT2 (October meetings 2010) for confirmation. , d# e; m* O) u8 `; _2 Q0 Y
Explanatory notes:
; o1 F2 a" d! [! s& ~8 u3 cIf it is a critical component it must be listed in the critical component list.4 t, @' D$ `1 o( \( H) C
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