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|  DSH 590" {1 p6 |" }. V# z4 D& Y* C
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| Rule for creepage across grooves and similar surface discontinuities
1 o9 ?" K1 c; ^& l! [ | 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 G8 Q9 i7 t9 t" F1 P9 x
| 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)- `. `' W0 I+ ^ k1 ?) ~1 g
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Standard: IEC 60664-1/1992 A$ n' y2 y* H0 N& f5 G
IEC 60335-1/2001, H' i" n8 t$ z; ]& l6 w: P4 K
IEC 61010-1/2002
7 M- R4 M; u+ `3 H' kIEC 61058-1/2000
: ]. O3 s7 q. M% I( K4 ]IEC 61008-1/20022 s- c+ O. J3 a. b: r/ t- ?% z) [
IEC 60947-1/2004
! c2 z6 F% O' ]$ ^$ B1 eIEC 60598-1/2003$ S3 ~# o# u. x: h
IEC 60065/2005
" y& d$ _& D! VIEC 60950-1/2001
2 K% A# g! U: s Y tSub clause:3 ?, }. C0 v% I) ?' h5 R
See Table below/ H/ {* s' Z. P. `
DSH N°: 590: k! I! S& o+ p! L$ f& x
Page: 1(1)9 k+ Z6 {& ?6 z; V7 A
Subject: Rule for creepage across. j5 b1 l1 ?1 Y7 R3 W& A
grooves and similar \( P8 P5 l, F0 R3 j
surface discontinuities8 K7 B- C& ^1 x, ~7 D, J
Key words:/ Z% J' [# L8 \ c
- Creepage
( _/ y# |8 p( H- Grooves
7 J& B, j$ b' ^8 O- Conducting path5 s4 {) z7 o- K& w
- Shortest distance& N0 E7 N7 K2 @
- Through air/ U6 W5 c/ C+ _0 M/ U; q
Decision approved3 [% R/ b2 a8 x
by the CTL during
d; A$ L. I, X H$ v0 ]its 43rd meeting in
8 c* _3 m* J0 Q0 [+ vJohannesburg
7 M; c F4 @+ IQuestion: As can be seen from examples 2 and 6 of IEC 60664-1 sub clause 4.2 corners. m1 t( B+ B% e6 ~! l. y) J
with angles greater or equal than 90 degrees are not bridged. IEC 60664-1 does, J- i6 T; K6 B1 E- w
not contain specific information at which angle less than 90 degrees bridging
7 z5 e4 a2 P$ M' x% _shall be applied. Some of the above mentioned standards specify that bridging& b5 j5 C8 q' y. ?/ O- p6 B5 }7 `1 Z: p" ]
shall be applied for angles less than 80 degrees.
$ r" [6 O" v! q: b$ CCan this 80 degree rule be applied in general for all standards?
) p5 Y0 X. Y& U8 R: c- } jDecision: Yes. The 80 degree rule shall be applied in general for all standards.
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