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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 G9 u' v o. d5 k! N7 t
According to sub-clause 8.9, a single layer of PTFE insulation having- C3 A. k, I E
0.24mm
+ ^: w$ p0 U0 f) c/ i9 b0 B* s* I7 J(min.) is considered to fulfill the basic insulation requirement.
7 u! B- S2 S6 R; Z) Y
8 Y3 {4 s7 i! H0 x) g: t+ BNow, recap to your sample, the tubing is already considered fulfilled
* |/ [: T- [0 o% rwith
6 I, X* n' A, V8 X+ Bthe basic insulation requirement. In order to provide sufficient/ K) w" ?7 n @
insulation
* f( |) V% D5 j5 J. U2 Q' }(double insulation) between the primary winding and secondary winding,5 N6 i$ s& A' `2 |) ` L4 O0 F
additional insulation namely supplementary insulation (requirement same
0 w+ Y1 ]6 F1 V Z% J5 ~2 Z( Zas
/ ~4 T Z* x; w) z4 ubasic insulation) should be provided between the primary winding and that
4 \8 T+ O% h9 k2 _tubing's surface. It means that the creepage distance between the primary9 U$ F& v6 q: v1 l3 M' r
winding and that tubing's surface should be kept at least of 2.5mm.
. i4 b2 H3 z( I' S2 V! ]9 C, lHowever,
1 d- Z, P8 S0 O5 S2 l& v7 Monly 2.2mm measured at your sample. |
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