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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:
" d2 r" }. k; @According to sub-clause 8.9, a single layer of PTFE insulation having( U$ h2 H7 q: L8 Y
0.24mm
- C" u1 Z5 w; b0 `) x(min.) is considered to fulfill the basic insulation requirement.
- G4 \* ?8 W0 [8 `# D
0 n# ]0 l+ p+ e# n' p- E$ V# iNow, recap to your sample, the tubing is already considered fulfilled
+ Y& n5 f5 y: u5 fwith2 ?" s' k4 S% M9 B: ]. ^" f; A9 f0 b
the basic insulation requirement. In order to provide sufficient5 p" z- e2 J% @$ h5 t
insulation$ H- I7 k8 e* K7 g$ Q7 |
(double insulation) between the primary winding and secondary winding,7 T0 e ?- f' t1 J
additional insulation namely supplementary insulation (requirement same7 j. y( g+ _+ ~0 U8 K% w$ I9 l
as
W6 v6 b: I/ b e& g( @basic insulation) should be provided between the primary winding and that
! ]; P4 Q& R; \/ z( O( Ctubing's surface. It means that the creepage distance between the primary
5 K! r! K! J% s6 \winding and that tubing's surface should be kept at least of 2.5mm.
4 w+ V4 R; o$ ~7 MHowever,' w9 N: ^, {* o6 |
only 2.2mm measured at your sample. |
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