|
|
|  DSH 590
' V& `% H" C$ O) M* \" y6 v8 H/ T: E
| Rule for creepage across grooves and similar surface discontinuities
3 v& S* K' o% J9 A G: m | IEC60664-1: 1992 cl. 4.2 IEC60335-1: 1991 Annex E IEC60335-1: 2001 Cl. 29 IEC60730-1: 1999 Annex B IEC60950: 1999 Annex F IEC60950-1: 2001 Annex F IEC60065: 2005 Annex E IEC61010-1: 2002 Annex C IEC60601-1: 1988 Notes Figs 39-47 IEC61558-1: 1988 Annex A IEC61058-1: 2000 Annex A IEC60598-1: 2003 - IEC60745-1: 2001 Annex A IEC61008-1: 2002 Annex B IEC60947-1: 2004 Annex G
" Q1 c0 y$ u( K | 60335-1(ed.4) & 61058-1(ed.3) & 60598-1(ed.6) & 61010-1(ed.2) & 60950-1(ed.1) & 60947-1(ed.4) & 61008-1(ed.2);am1 & 60065(ed.7);am1 & 60664-1(ed.1)/ u, {1 G8 w' y6 M4 f( A
|
; v& i/ S; l' k: d4 M8 ]! y
Standard: IEC 60664-1/1992* c6 B: f7 x' w! F8 U6 l
IEC 60335-1/2001; u. Y# m" u: a. E8 M. {
IEC 61010-1/2002
& ?2 c% ?& H; |, }IEC 61058-1/2000# E4 o( f4 s6 Q- n, T
IEC 61008-1/2002
/ T7 n) V) W6 B2 ~% U% S- jIEC 60947-1/2004
# x; w) Y$ P3 W: j4 C3 mIEC 60598-1/2003
1 v0 t, X% ~. K. [! L2 x1 AIEC 60065/2005
/ N8 j0 Q1 |) @9 lIEC 60950-1/2001- H: O6 Z0 d0 p: i- y& [7 g2 ^8 ?
Sub clause:& ~6 W4 q+ \4 N* o- s4 k6 |* x
See Table below
1 ]7 v# L" E, n; l0 r. x3 w8 l$ D( ?2 WDSH N°: 590
7 e3 }5 h9 c8 Y2 R' OPage: 1(1)8 _) a- z2 p# ^8 I$ d* K
Subject: Rule for creepage across
' P+ L6 G" Q/ E7 vgrooves and similar( Z6 R" Z, o$ i' N/ \& L7 t
surface discontinuities
: K/ t* d; W5 \8 GKey words:: R+ l' }' ~2 |% ]
- Creepage0 D. _# d5 U% S3 W3 t
- Grooves# i. Y# W: Q( D4 I- b/ N
- Conducting path/ F& z7 w& m& a- }, H) x
- Shortest distance
8 ~& ]; x/ P. f1 @7 U0 ~- Through air# @4 O* Y s; ?5 U4 n0 Y
Decision approved
3 s; h. ^2 f8 ?6 T- zby the CTL during/ V3 o7 r" {; o+ t
its 43rd meeting in! n+ @7 V1 s2 c8 o7 c# b7 Q- l
Johannesburg5 x" t1 C; }+ f
Question: As can be seen from examples 2 and 6 of IEC 60664-1 sub clause 4.2 corners
9 }6 w* U" z6 `6 Rwith angles greater or equal than 90 degrees are not bridged. IEC 60664-1 does
8 a* V* K, S4 d7 Q- x# Snot contain specific information at which angle less than 90 degrees bridging4 }3 t1 U4 y0 [
shall be applied. Some of the above mentioned standards specify that bridging
* d" T( C8 h: n; D1 B& F3 h9 Jshall be applied for angles less than 80 degrees.0 l+ [! S4 K# D! o2 K
Can this 80 degree rule be applied in general for all standards?
% K) }. `; t; @2 MDecision: Yes. The 80 degree rule shall be applied in general for all standards.
* o7 v( g! Q8 f1 v( R+ I- d; g( v, g8 n" T5 }
/ a* w1 Y* _4 U, L3 ~$ D- x/ L |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？注册安规
x
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2012-11-6 14:21
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡