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0 f2 `# ~2 v. K: a# O
; B. \: R s8 u0 _& _9 _
| Reduction of clearance and creepage distance
/ r0 d3 V. C0 k/ E M9 a | 540 f1 w8 h& W j0 p, L+ m. X, ?: C( K
| 60601-1(ed.2);am1;am24 e9 ^# m) _/ X" L u2 n# j3 T7 O
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4 [1 ~. a7 M! F# B/ |- g$ q6 ~& o; [
Standard(s)- (year and edition):
; @( I1 w7 H x$ bIEC 60601-1:1988+A1 +A21 W, U- X. ^9 j) @2 k% v
Sub clause(s):. K( L# a) x; y* v
54
# I8 P: \5 I5 x) g; n! i* a' ?Sheet n°: 535' h0 E$ v& {: n9 ]; T! d; P2 y* Q
Subject:
* z( f- k y: ]/ ^3 _4 h- U- SReduction of clearance and
2 S& e. F ]* o- Z& f2 @creepage distances
* L" ^! V+ U8 tKey words:
0 \6 |3 W( L& [' a. V- fClearance, creepage, reduction,5 N/ D9 T2 m, L2 V9 E' S: f+ @
tracking resistance5 r- ^/ n& k) Y
Decision taken at the 40th4 A6 w2 R8 E4 r+ O
meeting 20030 S/ _( v* f0 H- J$ r2 z/ ~) v
Question:
, X! [4 h; m7 M/ f% BIs it permitted to reduce the creepage and clearance requirements of clause 57.10 based on evidence that, a8 n/ x$ N) a, \1 c2 t+ t
the material being assessed has a high resistivity to tracking?: {0 }1 c' e7 }8 u, [& I; z/ i
If it is permitted, what IEC Publication should be used as a guideline in determining the permitted$ w3 B6 T8 a- R* ?8 e
reduced creepage and clearance distances? j1 ]- u* x7 s$ X8 d
Decision:
! x: [8 L8 r; t/ q" iThis edition of the standard does not allow reduction in clearance and creepage distance.* |3 y/ ?" J4 C/ ~- R/ u
Explanatory notes:/ @7 s$ s/ a- h0 E* E
This problem will be transferred to SC62A/WG14 to make a recommendation to the 2nd edition do deal& N! a9 Z# Y( g' _" S7 {7 f8 V
with this issue. The 3rd edition will address this issue.$ d6 x* q9 Z8 t, W. e
# a# {0 Q$ f G6 z# I9 |4 u' y7 `1 ~+ j1 x
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发表于 2012-9-19 15:47
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