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| Reduction of clearance and creepage distance
7 r* O; ]0 y& r% H | 54
9 R- b1 Y& y; i% _! O+ i- O" ~ | 60601-1(ed.2);am1;am2: g# m7 t0 A- [+ D
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Standard(s)- (year and edition):
, n7 [+ H+ s+ T8 i# s! aIEC 60601-1:1988+A1 +A2
" J* R0 { q( T1 w% ]6 TSub clause(s):/ {! O: K) `6 q- Q; q
54
3 l- S, t/ \; Y) g+ {Sheet n°: 535
0 G6 I- { {( a4 p3 B3 sSubject:; ~2 s+ J6 P2 N ]
Reduction of clearance and
! x6 y7 c) E$ s0 a8 D# x& Zcreepage distances5 M7 V% g% k9 X7 s# u
Key words:8 D& Y; Z2 n: G
Clearance, creepage, reduction,
# G- E7 _# ?% ctracking resistance% q% t" e2 Z6 K6 c- {. z% x( q2 t# B
Decision taken at the 40th' u: R7 [' F0 m$ C i/ U
meeting 2003% W6 c' z8 j7 J) M: ^
Question:
$ |" X) [2 Q& K# W, }Is it permitted to reduce the creepage and clearance requirements of clause 57.10 based on evidence that f, o) K* {8 A5 l0 a" H0 w
the material being assessed has a high resistivity to tracking?
4 L, u/ y7 x. c7 p% e9 ZIf it is permitted, what IEC Publication should be used as a guideline in determining the permitted: }; i# a k% a, P
reduced creepage and clearance distances?: e; g/ ^3 u& \
Decision:* D* H8 Y! F) Q+ M* O! u( x
This edition of the standard does not allow reduction in clearance and creepage distance.
* L: s0 Y, S$ G! t( w5 _# q( _Explanatory notes:
M' X" x& B' }6 sThis problem will be transferred to SC62A/WG14 to make a recommendation to the 2nd edition do deal
- Y2 l! ?" ?; ]& }8 x" l! [: iwith this issue. The 3rd edition will address this issue.2 i4 J: R" h' ?4 R# F6 T* \1 i% M$ r
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发表于 2012-9-19 15:47
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