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|  DSH 590) N# K/ b; q: D- o
( Y: q# |3 u! h6 ` | Rule for creepage across grooves and similar surface discontinuities' U% s9 x, W7 R. e5 f9 Q
| 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; i" D" G$ f# Y* s! [- L& _
| 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)6 c& d/ L5 ~. m7 m
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Standard: IEC 60664-1/1992
, B D# {1 N( _5 Z6 T+ I0 UIEC 60335-1/20010 ^7 q; b; H: |* Y
IEC 61010-1/2002- }5 u0 g: v2 g! h" E# e
IEC 61058-1/2000' c! v6 c7 R' O% i' g; A5 ^* N1 f1 ~
IEC 61008-1/20028 c2 w S6 ? V) f
IEC 60947-1/2004
% }/ F7 z: K* ]4 w( S4 t7 n; J* mIEC 60598-1/20030 r; ?# ^. e6 F: V7 o4 x9 ^% u
IEC 60065/2005
J8 U0 ^0 m' `! lIEC 60950-1/2001
9 W. ~+ T/ s5 r: GSub clause:
: Z M8 j4 k! v; GSee Table below
. g1 X5 u7 R0 @8 a7 y0 O4 v6 G! R" ZDSH N°: 590
& |5 B5 W; {$ X6 X" E( OPage: 1(1)/ P, H: z1 u. f' }) M
Subject: Rule for creepage across$ E5 l: |# N4 \
grooves and similar, W/ ~( d" F* M8 d; H
surface discontinuities
* d7 _6 D3 f" IKey words:0 B2 ?; v# \8 |* Y
- Creepage0 q/ f" m9 [# \0 A, p2 ?
- Grooves9 G4 V# ]+ U6 q# P6 J4 e
- Conducting path/ h4 M R+ q# O$ r( x' ~0 ?# y' Y
- Shortest distance
3 C; m& V; L1 H- Through air- H2 p4 F8 G- t% f3 {6 F( B8 N" _7 \8 q
Decision approved
* q. h- l7 ? q3 Tby the CTL during" s. f6 w0 Z+ e+ h
its 43rd meeting in
$ x& \6 P8 g$ {0 F0 }+ O5 h, eJohannesburg
" f. W, ~8 U" }& W6 G) xQuestion: As can be seen from examples 2 and 6 of IEC 60664-1 sub clause 4.2 corners
0 s& G, G0 \/ B( w* Q0 l+ S& @# Gwith angles greater or equal than 90 degrees are not bridged. IEC 60664-1 does) k3 e x. q0 ~) W. p
not contain specific information at which angle less than 90 degrees bridging
- g$ ~% \3 x( ~4 ?shall be applied. Some of the above mentioned standards specify that bridging7 J' l) o0 V& ]" W( v& _( q
shall be applied for angles less than 80 degrees.
+ {/ T m( j3 X8 [* I0 [9 |Can this 80 degree rule be applied in general for all standards?/ }2 N R) D8 w! F( d
Decision: Yes. The 80 degree rule shall be applied in general for all standards.
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