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7 d( [1 ]! L# d* _7 X* R | Reduction of clearance and creepage distance( Y( H6 H& m' J7 r B
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* S5 M+ p2 R2 I9 L& m# N | 60601-1(ed.2);am1;am2
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. |8 n: q5 {: B9 [# |2 ]& d. O& RStandard(s)- (year and edition):
% |: A! w& |2 i! b4 H, e$ t5 g1 r* Q, cIEC 60601-1:1988+A1 +A2
; s& C# X' |3 C' u. G) MSub clause(s):
( A2 ]1 c5 J! O \0 u54
' C& a# x& P/ `; }2 F4 D0 uSheet n°: 535% \/ I% h4 F5 n1 W! f
Subject:
' D8 A }, _0 p) ^7 MReduction of clearance and, }5 _5 g& k! ~: \+ e1 K
creepage distances- }% Q; C( O) Y3 {, g3 ]
Key words:# Y" m, i% i# S8 c j
Clearance, creepage, reduction,
. A# F4 m3 g t& Btracking resistance. h# K( M W9 F- W6 L$ K/ n
Decision taken at the 40th
$ D8 D9 F$ r! N- v. h1 }$ rmeeting 2003
4 p3 p7 T; r# f7 q6 `Question:
: }6 Y J ^- C+ n$ U& dIs it permitted to reduce the creepage and clearance requirements of clause 57.10 based on evidence that- [! v' p7 j. u
the material being assessed has a high resistivity to tracking?
% J4 c/ W Z( M% MIf it is permitted, what IEC Publication should be used as a guideline in determining the permitted4 z+ l: i m, J" Z, r* @
reduced creepage and clearance distances?
- x# ? x7 z' ?% o, |Decision:* }+ M# @/ v7 `: f8 v& a6 Q+ u+ B
This edition of the standard does not allow reduction in clearance and creepage distance.# a! Z5 Q+ `& m) M- _( ]1 L
Explanatory notes:8 S, U5 ^+ t2 S" v% B F5 k
This problem will be transferred to SC62A/WG14 to make a recommendation to the 2nd edition do deal9 m# b) ^& ~8 g/ Q4 [
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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