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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:4 [, ~4 [9 ], W; I' o
According to sub-clause 8.9, a single layer of PTFE insulation having% F& A! S$ B, x/ [4 l
0.24mm# i: W1 O; w2 o5 }
(min.) is considered to fulfill the basic insulation requirement.2 _5 i5 @) ^5 _4 ]9 d
S1 Z! @( e* V! E- BNow, recap to your sample, the tubing is already considered fulfilled
$ d; h* {# v6 ~: ^) Wwith, t* E6 V8 a+ B4 v
the basic insulation requirement. In order to provide sufficient0 c" G% ^0 H; w9 j$ E, Y! ]3 o
insulation n9 f B/ ]% m2 U8 {
(double insulation) between the primary winding and secondary winding,5 \) ?' m& R( v7 s) h8 `# y- e- z
additional insulation namely supplementary insulation (requirement same' Q( S- Z" `& {; D+ L& \+ P1 ^: D
as
* k! M7 G. t( c) u* cbasic insulation) should be provided between the primary winding and that6 E; ^: R- s2 a7 j; _3 U5 a7 n
tubing's surface. It means that the creepage distance between the primary
5 f$ I! F' M/ h- C8 V) S4 h/ Z$ J; xwinding and that tubing's surface should be kept at least of 2.5mm.( a* `& @9 E! N
However,% \% M) ]! x: G/ `. m2 e; `8 V: \
only 2.2mm measured at your sample. |
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