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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:: O. ?% _+ h$ \" m1 G# B
According to sub-clause 8.9, a single layer of PTFE insulation having6 P# l6 X3 X; X; l* |
0.24mm
, N. @( I# i; E0 j7 N(min.) is considered to fulfill the basic insulation requirement.
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Now, recap to your sample, the tubing is already considered fulfilled1 n5 Y. @9 M( h+ Q
with/ k; i/ K8 }/ t+ [* K0 [; e
the basic insulation requirement. In order to provide sufficient
; ^! } {; `+ E, H8 P/ k* yinsulation$ M9 q% [: U7 z' T) b
(double insulation) between the primary winding and secondary winding,
/ d2 C' d: M# q! H# O$ Z4 dadditional insulation namely supplementary insulation (requirement same
; u$ S: c w$ u N7 qas" V2 [) g/ a; ^
basic insulation) should be provided between the primary winding and that/ O C+ c7 K" q; e3 J) y
tubing's surface. It means that the creepage distance between the primary/ x: Z6 y' Y& L6 h: A4 H
winding and that tubing's surface should be kept at least of 2.5mm.
6 g8 m( z) z3 q& p9 {0 {However,
( s2 i1 c: V3 n2 ionly 2.2mm measured at your sample. |
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