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楼主 |
发表于 2008-6-2 19:14
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Sorry, ITE说是CR不够. 如下是其原文:5 b% m2 d$ E5 Y7 B+ {- c+ a
According to sub-clause 8.9, a single layer of PTFE insulation having# \3 I2 w7 \* }0 v5 R8 u$ s
0.24mm2 j$ X K- Y0 O1 _* S
(min.) is considered to fulfill the basic insulation requirement.$ H' H" C$ l7 s! |( l2 Y
8 x' @+ w2 L! i) a; I% w7 e9 J$ w& nNow, recap to your sample, the tubing is already considered fulfilled
+ P; a, o9 |: M6 U# U; T4 V lwith' L0 L8 K( k' O- T& ]9 j. I
the basic insulation requirement. In order to provide sufficient
8 }0 D* U. x' S3 h9 Z, P- f; Ginsulation" g) d3 K5 V$ @ N
(double insulation) between the primary winding and secondary winding,, u1 h( b* f6 j- m
additional insulation namely supplementary insulation (requirement same
! _: x- u4 s# O2 p! @# was
4 [' b& z1 x$ v* m/ E% Xbasic insulation) should be provided between the primary winding and that* p7 K6 X( P) @
tubing's surface. It means that the creepage distance between the primary
, S6 a# g+ X9 [" Awinding and that tubing's surface should be kept at least of 2.5mm.
& J# x3 g0 u- SHowever,
9 T/ x) r- w3 H0 W9 Yonly 2.2mm measured at your sample. |
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