|
|
|  DSH 590
p8 Q5 ^% x0 r0 {8 s, o/ |# Y. V. t6 u2 v+ M2 a$ s
| Rule for creepage across grooves and similar surface discontinuities
/ h0 d3 H9 g( \' C2 v ~# F | 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
; D' Z% m! ]0 Q( I! R; m | 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)7 G- d0 X7 o4 p. P- A O) |
|
1 {( b/ j& B% @
Standard: IEC 60664-1/19927 U+ r" W3 M# q( a. }. J
IEC 60335-1/20011 J+ D: m0 F) h9 Q2 y# e
IEC 61010-1/20021 ]/ D/ ] M: S S2 C
IEC 61058-1/2000
" @* l( n) E2 u0 c2 ZIEC 61008-1/2002- @7 [! F9 _9 h5 g
IEC 60947-1/2004
3 g A6 b0 u/ l6 l: W2 eIEC 60598-1/2003
/ S8 a# A& M( m& ]& [IEC 60065/2005 y: b/ A9 M) Q$ W: ^! D5 o
IEC 60950-1/2001. n. S6 Z+ L {% V! g
Sub clause:
& O! W& N* `0 t( _5 R; b# {/ E( H0 CSee Table below L/ F, T! f$ s9 ^, p* x# l
DSH N°: 590 w6 T$ T5 j7 I
Page: 1(1)
* H8 i* i# Y0 l/ `+ z1 n& qSubject: Rule for creepage across
3 D- f) y4 `+ ?9 Fgrooves and similar, c U$ _6 w: P! [- D2 S
surface discontinuities
+ h6 N6 l- q/ K' L0 d: U4 @Key words:
( B7 b" i( q+ b4 J8 l- Creepage2 i4 q" K3 n5 v
- Grooves- b* x: R8 p( P* Z* v' f
- Conducting path
6 K6 r; t( U& j a, U+ q1 p- Shortest distance- `4 x/ e0 e/ _/ I0 e% b
- Through air2 N5 k' y- J# e2 U/ `0 d+ p
Decision approved
2 a. G3 q+ I% D4 q; X3 mby the CTL during
2 n, y! ?5 |% v! Hits 43rd meeting in5 ], ]9 v; W' z! U! _
Johannesburg" E7 A) ?; U) z w/ X- c; }, }7 D
Question: As can be seen from examples 2 and 6 of IEC 60664-1 sub clause 4.2 corners
! q4 d& g6 a2 T2 Jwith angles greater or equal than 90 degrees are not bridged. IEC 60664-1 does7 X( \" R+ @; {+ J r4 X
not contain specific information at which angle less than 90 degrees bridging
3 ?' Q6 e n+ ^$ |shall be applied. Some of the above mentioned standards specify that bridging/ k5 }% p9 E6 `' X5 M, p" I
shall be applied for angles less than 80 degrees.
$ O+ w! f7 E# ?5 ?6 |0 i$ F: NCan this 80 degree rule be applied in general for all standards?
- A; M' m* o0 PDecision: Yes. The 80 degree rule shall be applied in general for all standards.
( i: ~/ P a) w9 O8 K5 V8 c# A2 O4 S9 }, u
]: E' P; K0 Z: r$ G |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有帐号？注册安规
x
|
/2 
|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 2012-11-7 18:29
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡