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|  DSH 590" g1 }% `% J: o/ ^+ \6 U
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| Rule for creepage across grooves and similar surface discontinuities- N( Q: I p+ a4 B( f1 Y
| 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 G3 H9 y) n1 C. M& M/ s- @: A
| 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)
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Standard: IEC 60664-1/1992
9 h, K3 A6 x" PIEC 60335-1/2001
# I% u* \" k3 | uIEC 61010-1/2002
, a" ~9 _* W/ c/ h! P* Z) |8 i5 }) A2 zIEC 61058-1/2000
, P" N; j+ E* f$ LIEC 61008-1/2002
, H! i! R# h* V9 ~, [. jIEC 60947-1/2004
7 R0 `- h4 P0 ^0 w. L% V1 |( x- N3 VIEC 60598-1/2003
" ]8 x- M& c$ NIEC 60065/20056 @$ f) q6 H9 L, v* ^) ?$ ?+ N4 |
IEC 60950-1/20010 E, w( b3 R+ k/ T1 y! F ^
Sub clause:
% @8 S" \2 }( eSee Table below9 c$ S+ m2 r1 K8 U6 Y- s* {: N T v
DSH N°: 590
( o! g0 B5 c% H1 [' \' r6 aPage: 1(1)
& _1 }$ L$ \, K! Y, y$ X! iSubject: Rule for creepage across
1 _8 J$ B$ Z' ugrooves and similar
: w& o* L' a" ~8 e. N5 E/ Xsurface discontinuities+ L) c: M& ~ x$ @
Key words:
% T; y( w& V* E. C9 m- k- Creepage; s; e! R6 N/ P. m" ^) S5 \
- Grooves! ~5 f1 O7 s( A5 G; x
- Conducting path
6 z+ y7 F' G! G2 Q- Shortest distance
1 q4 ~" {3 @3 R( ]% m8 o" U- Through air
+ w; C4 O* b( B# n+ s' M w& t, B" UDecision approved
9 u* T' b' h' Yby the CTL during, E9 e0 b$ C7 M7 ^* W3 [1 B$ D
its 43rd meeting in. F; d/ d& z" G" Y$ R( a" Z
Johannesburg
2 T7 ] a, h6 R/ m2 Q& wQuestion: As can be seen from examples 2 and 6 of IEC 60664-1 sub clause 4.2 corners
& ~' ~. V. q j3 S; S7 O; _with angles greater or equal than 90 degrees are not bridged. IEC 60664-1 does
- d+ B9 F& d% M6 ]( w& anot contain specific information at which angle less than 90 degrees bridging9 h& N* U9 S8 I: y/ f" [7 h
shall be applied. Some of the above mentioned standards specify that bridging. K0 Q# l& b' j& N7 W q* r
shall be applied for angles less than 80 degrees./ b% j; v8 ~4 [& b+ t; ~$ E
Can this 80 degree rule be applied in general for all standards?; }" Z/ c" M, n. E/ x* M/ C
Decision: Yes. The 80 degree rule shall be applied in general for all standards.3 G! V; F& o: l+ Z
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