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qingjunfa 发表于 2013-12-5 09:43 1 @% ~ V, `, I) T9 T! ~8 k
依照IEC60335-1标准来讲,严格意义上L,N之间的应该是功能性绝缘即可.但由于说通常L,N之间爬电距离通常都可 ...
; M' `+ E; K0 XStandard: 7 I# H- t; [0 c3 U, D% D0 z
EN 60950:2000% Z( I5 e) U0 {0 X) h7 t7 s
EN 60950-1:20018 L3 F. B0 F% z! @0 U9 C# J
Sub clause:3 {8 t# @4 w+ z+ e( Y
2.10 Sheet no.: 9 L9 S. R! w. o' i2 t; B' |* B9 {
95/14
1 a3 ^9 R/ X, `9 q# A
9 {/ ^: s, T1 \* k' Z8 JPage 1 of 1
* y) K# R) O/ b5 X+ kSubject:
$ M, ?4 J4 u/ X- |/ ]Clearances, creepage distances distances etc. Key words:+ H2 o1 v4 f4 O& y) ~+ P. ?
Functional/Operational insulation
; Q5 O5 ^2 W& M( C Meeting:0 u, s3 K# p1 M3 d, S# ?/ v& U
OSM/EE – 1995
- Q$ r) ?9 |( sItem no. 9.12 P' d/ H5 f1 Q! A$ ^, R3 N
Question: -
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) ` a6 V* b. B/ B( O, MDecision:2 r3 | n( l* F# e
Insulation between parts directly connected to the mains in front of a fuse has to fulfill the requirements for operational insulation or pass the test of 5.3.4 b).
+ C! t* Y& {2 N1 tExplanatory notes:
$ R4 _9 _8 H XThe CENELEC common modifications to cl. 2.7.1 will not accept the short-circuiting and reliance on the installation fuse.3 q! r+ y8 ?5 a: s
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