|
|

楼主 |
发表于 2008-6-2 19:14
|
显示全部楼层
Sorry, ITE说是CR不够. 如下是其原文:
* {4 ]. |+ t) s3 ~4 jAccording to sub-clause 8.9, a single layer of PTFE insulation having- p- j u" A# i; ?
0.24mm+ o3 n2 ] N3 s' z; @; C
(min.) is considered to fulfill the basic insulation requirement.8 \0 ?( h$ e0 P1 X
6 a7 e: n; s0 R
Now, recap to your sample, the tubing is already considered fulfilled. S, a9 v6 `& h( H' R( |
with
" b- V( N1 }: Kthe basic insulation requirement. In order to provide sufficient+ _' O7 x8 d; D
insulation
4 p+ z! {! A" n+ }2 T(double insulation) between the primary winding and secondary winding,: O5 f! ]1 K! z. t; H1 ?9 D" _
additional insulation namely supplementary insulation (requirement same
8 n! q! o( g1 |as* T3 Q) ^; H/ h* R4 R! x" w
basic insulation) should be provided between the primary winding and that
& P4 _7 }' V9 Z+ O# o( ?tubing's surface. It means that the creepage distance between the primary
: m6 i% [9 P0 H" ?) Z2 u6 twinding and that tubing's surface should be kept at least of 2.5mm.' y# `! I) E& w$ L8 J
However,+ Y. p: S$ r. w9 G/ k
only 2.2mm measured at your sample. |
|