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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:) h9 e/ n) x3 H& G: e% e5 z
According to sub-clause 8.9, a single layer of PTFE insulation having/ T4 ]7 J$ y0 E3 e( g
0.24mm# u( D0 T6 t8 }- x
(min.) is considered to fulfill the basic insulation requirement.! u; }. i, h' D
& q$ K+ K Z% rNow, recap to your sample, the tubing is already considered fulfilled
; d9 n) P7 y2 g" Y7 C5 m3 ?" ywith5 a- H# Q: L# S K0 J
the basic insulation requirement. In order to provide sufficient. @3 X# Q% A- K) A6 g
insulation! k" c# l; X. ]% l$ U6 s
(double insulation) between the primary winding and secondary winding,
# q% y+ d2 x, Cadditional insulation namely supplementary insulation (requirement same
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basic insulation) should be provided between the primary winding and that- [3 C/ `1 D. p+ @* r- i
tubing's surface. It means that the creepage distance between the primary) s' \. r1 j5 Y
winding and that tubing's surface should be kept at least of 2.5mm.( k5 x; R9 ^" v. l/ n9 j \& Q
However,
1 g6 ^& V( }6 O- r( Tonly 2.2mm measured at your sample. |
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