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| Reduction of clearance and creepage distance
* c4 l( z( ]. `3 s' T | 54" X1 I: I* a4 r; {: t, [6 `+ z
| 60601-1(ed.2);am1;am2
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: g, v5 h: }; \! |4 dStandard(s)- (year and edition):
* H; j T7 ]3 u$ O4 c# bIEC 60601-1:1988+A1 +A2; C! k3 z, o* n0 k4 T! y, c
Sub clause(s):1 @2 w+ \+ Q! S
54/ ?/ u% |4 Z. A2 L
Sheet n°: 535* R, Q% F9 a. f& g: F0 _( Q; e
Subject:
: k6 U1 K0 L+ k: J9 yReduction of clearance and1 T' L0 G. i+ `7 S: A/ h. R Y
creepage distances
; r* |4 Q0 F9 u5 l1 c3 Q7 ]0 HKey words:
5 I! D' Z' `) a, S+ F* vClearance, creepage, reduction,
8 S/ r! f4 y% stracking resistance
6 }8 ^) p+ M$ Q, C8 ]2 J1 I$ XDecision taken at the 40th$ }/ P0 z9 O8 h
meeting 2003
. Y, L2 J: ]( C' ZQuestion:- ], q g" A- s# ]& T. O! h
Is it permitted to reduce the creepage and clearance requirements of clause 57.10 based on evidence that4 Q& o ]$ {9 w3 s: F. I
the material being assessed has a high resistivity to tracking?
2 X5 I" l3 ^) ~! X$ nIf it is permitted, what IEC Publication should be used as a guideline in determining the permitted
( y* @) |9 _' U6 d5 `reduced creepage and clearance distances?; {- a, {' Z0 F! F) F1 t
Decision:
" C7 n7 l" ]! AThis edition of the standard does not allow reduction in clearance and creepage distance.% B' [9 _" G8 k2 A7 C, `1 A
Explanatory notes:+ ?3 c4 r: g$ C
This problem will be transferred to SC62A/WG14 to make a recommendation to the 2nd edition do deal6 R/ ?7 }/ s! ?& W7 b! [2 M5 Q3 u
with this issue. The 3rd edition will address this issue.- o' v$ W1 j& X, e) C2 E0 J. e4 ?8 p
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