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最近在一家实验室做带转换插头(VDE/BS/AU/CHN/US)电源的CB测试, 实验室要求对转换插头做EN50075和IEC60884-1的测试. 其中有一项测试为:& f+ q8 B/ u) {4 E4 y
30.1 Pressure test at high temperature
: ]* W: l. Z. T' g3 u( \( X# d! VThe specimens are tested by means of the apparatus shown in figure 41. This apparatus has" `5 e& J: e! t, u
a rectangular blade (see figure 41a) with an edge 0,7 mm wide, to be used in the case of: X% `/ u+ n4 ]8 m/ }' y
round pins, or a blade having a round shape (see figure 41b), with a diameter of 6 mm and an
; k! t9 ` c+ @edge of 0,7 mm, in other cases.
" |% g# Q0 Y4 m% e& I7 DThe specimens are placed in position as shown in figure 41.
8 f' L! |3 J1 ?' r, X6 lThe force applied through the blade is 2,5 N.1 M# ^% C2 r% n1 \ [
The apparatus, with the specimen in position, is maintained for 2 h in a heating cabinet at a/ z. L; r, L% x2 n6 ^
temperature of (200 ± 5) °C.
5 b! L* ~4 O/ I5 h) Q; z" {The specimen is then removed from the apparatus and, within 10 s, cooled by immersion in
1 k* C* S/ J g6 |, r# Jcold water.( @1 w* O) p3 [. ~# Y2 B5 R
The thickness of the insulation remaining at the point of impression is measured and shall not8 C X5 z5 z' i* \1 h7 N: r
have been reduced by more than 50 % of its original value measured at the start of the test.7 ~# e8 Z9 r4 ?' n; b; h
NOTE The values 2,5 N and (200 ± 5) °C are provisional.
) q9 X+ t3 @" K; z+ s4 x- c6 v3 N6 [+ }7 l; e
当时我们采用PC6485的材料做, 结果是胶都融化了.
' I8 \+ I: @ s: \$ `; l Z. N+ `$ H1 I
请各位帮忙是否做过类似测试?请帮忙提供可以通过此测试的塑胶材料.# q' d/ O4 [; g1 c
- c; U& f; ~3 W0 q谢谢各位了. |
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