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5 ?, ?: c0 X' ?3 V | Reduction of clearance and creepage distance
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A. {5 x- M; F4 \+ W3 h | 60601-1(ed.2);am1;am2/ i& L: I6 B1 a+ \. ^
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Standard(s)- (year and edition):
~" U7 y- B4 ]; e0 \7 s$ H8 S8 \IEC 60601-1:1988+A1 +A2" u1 I4 C+ [+ w H
Sub clause(s):. W) n+ ~" P% A# r3 P# M6 z9 q
54
8 T% S) v* H; p6 Q* TSheet n°: 535
- Z( O R! P* ESubject:
( x; f1 m! H- j; Y7 [7 ?5 O$ kReduction of clearance and5 i* `$ S8 g2 ~
creepage distances2 z# E3 k; |+ x+ {: X* ~ r, r1 z* }; X
Key words:
" Z) Y# ^1 g8 q% [9 i! xClearance, creepage, reduction,
) }8 W1 f- ]% K' B# T0 @% v: Y- btracking resistance3 N5 G9 f( N9 m* L' R4 ]
Decision taken at the 40th% @) }" K9 L1 b3 A' M# F0 p# n
meeting 2003, V& f8 c' |' i+ h1 S4 e: c, z# H
Question:
; ?7 n5 K0 `0 q9 m z1 R0 DIs it permitted to reduce the creepage and clearance requirements of clause 57.10 based on evidence that
7 w# H& E5 L, l& fthe material being assessed has a high resistivity to tracking?( u; M7 Q1 O& X" R0 y* \
If it is permitted, what IEC Publication should be used as a guideline in determining the permitted" a, i5 V+ X# B4 d$ K0 W2 k
reduced creepage and clearance distances?8 c: Y, ^+ U% C2 ]$ n7 q$ |
Decision:
+ `8 B2 t& P: w7 T& XThis edition of the standard does not allow reduction in clearance and creepage distance.% U0 S7 j. Y: I+ }
Explanatory notes:+ c+ D- G% A# T) f( |
This problem will be transferred to SC62A/WG14 to make a recommendation to the 2nd edition do deal( m% g0 \( U. e- |. {+ i: B- B' n Q
with this issue. The 3rd edition will address this issue.
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发表于 2012-9-19 15:47
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