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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:
, _7 ], Z8 _( T; |( o: j3 rAccording to sub-clause 8.9, a single layer of PTFE insulation having
4 _3 t; u+ [& \0 |0 U& w0.24mm. X/ G: M- w- B- E5 {. K5 H6 d
(min.) is considered to fulfill the basic insulation requirement.
' U0 N. R. k0 L1 k: i8 `! p R; {3 S& ], J, H; d, `0 u
Now, recap to your sample, the tubing is already considered fulfilled. E7 f! d3 J1 S. A
with
$ V- p$ Y0 j9 i% lthe basic insulation requirement. In order to provide sufficient* Q$ ~0 y3 o* d9 F6 K4 r3 K% C
insulation/ ^8 {7 G. C) a. @1 N4 D+ k4 v
(double insulation) between the primary winding and secondary winding,
6 E1 Q Z0 F7 V* wadditional insulation namely supplementary insulation (requirement same4 ^5 p; m# ~; i# B" u% W
as. s) @3 O) K- e% c) Z6 p- ^
basic insulation) should be provided between the primary winding and that/ K) p* W( F$ F: K4 b6 F
tubing's surface. It means that the creepage distance between the primary5 t- O# Q% h3 j
winding and that tubing's surface should be kept at least of 2.5mm.1 G: h7 X+ _ \& q! s# F+ I# @0 ]
However,
$ l5 f9 J4 r! |9 e- vonly 2.2mm measured at your sample. |
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