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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:
2 w0 b2 p7 A6 ~According to sub-clause 8.9, a single layer of PTFE insulation having
4 F1 P) x1 O4 _0 e. \* R! c% \0.24mm
! X @/ x. k) s, Z- C2 K$ W(min.) is considered to fulfill the basic insulation requirement.
' P/ p4 B1 `' j. X4 E
) J3 G. C8 _- z# T, j/ O( U. j9 [( \! ENow, recap to your sample, the tubing is already considered fulfilled7 \4 M5 O2 \" L3 U. ?8 W7 P
with/ n# u6 Z% H: g8 N- ^1 {
the basic insulation requirement. In order to provide sufficient
; k5 y& Z, }1 `2 l# @& sinsulation; _* A$ {- U ^ X
(double insulation) between the primary winding and secondary winding,1 H& b, V/ \8 l
additional insulation namely supplementary insulation (requirement same: y1 g- s2 C: @& A$ L
as
3 }2 @6 [! J2 I3 @! X1 {0 k$ B% |5 ybasic insulation) should be provided between the primary winding and that
" r* U9 }" c9 i8 }tubing's surface. It means that the creepage distance between the primary# R' Y" K0 f5 x/ l+ T ?3 y
winding and that tubing's surface should be kept at least of 2.5mm.8 k3 E- k7 T5 v- V8 y, S3 |) e
However,2 Q# c3 M. u" s4 D+ B
only 2.2mm measured at your sample. |
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