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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:
0 Z1 ^" o5 |( }$ }5 ~ J2 f7 eAccording to sub-clause 8.9, a single layer of PTFE insulation having. t$ \6 v. ^% C/ s- q
0.24mm( U8 |% J8 G( ]+ s4 T1 Z: j% {0 d
(min.) is considered to fulfill the basic insulation requirement.# s6 z [% D8 p2 {3 P1 D
+ _2 |9 }& E3 u$ T
Now, recap to your sample, the tubing is already considered fulfilled0 d+ l) c' ?" |& O% ]
with5 s7 h" G" n2 T
the basic insulation requirement. In order to provide sufficient
( V1 R8 o0 Y6 c: yinsulation8 X7 w' p2 ~/ M: |' X# J/ A+ J; b
(double insulation) between the primary winding and secondary winding,5 T( c/ u8 H6 g! Y0 `. {) [
additional insulation namely supplementary insulation (requirement same
# W+ a; A8 w4 r- ias, A# ?. s) n3 N: A2 K
basic insulation) should be provided between the primary winding and that
$ W" i- b8 |3 o% S! {tubing's surface. It means that the creepage distance between the primary
0 {6 z7 w" Z$ J2 @1 Pwinding and that tubing's surface should be kept at least of 2.5mm.
8 Q5 _/ q: v% zHowever,& p: k9 E- y2 H9 S" `
only 2.2mm measured at your sample. |
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