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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:% E# y( ]( e# O4 ?+ k; u* B& F
30.1 Pressure test at high temperature
+ q3 t( Z# y3 X; DThe specimens are tested by means of the apparatus shown in figure 41. This apparatus has1 I6 r# ]2 G' Z* R# j( H
a rectangular blade (see figure 41a) with an edge 0,7 mm wide, to be used in the case of0 V4 b- C0 v1 C
round pins, or a blade having a round shape (see figure 41b), with a diameter of 6 mm and an
& j$ K, z& P! u# ?5 ]% Jedge of 0,7 mm, in other cases.
' I1 [. W) m E: z8 B# L& _7 iThe specimens are placed in position as shown in figure 41.& o% X5 ~+ w6 b( e" [9 C! R4 p: h
The force applied through the blade is 2,5 N.2 z; v2 K! t- c" o
The apparatus, with the specimen in position, is maintained for 2 h in a heating cabinet at a% @+ q) ]$ E# c" w5 D
temperature of (200 ± 5) °C.
6 C' R) c6 A4 [; l. f x$ K, oThe specimen is then removed from the apparatus and, within 10 s, cooled by immersion in
/ y% C4 l+ z |+ F# Zcold water.
: s2 h3 I! f0 K- S! `! `- f# XThe thickness of the insulation remaining at the point of impression is measured and shall not8 h$ R9 O4 |, F* f% j3 b# L
have been reduced by more than 50 % of its original value measured at the start of the test.
" `! D( u1 {0 ?- yNOTE The values 2,5 N and (200 ± 5) °C are provisional.+ ?3 y9 V5 F7 @* w& z
; [8 T$ A8 Z/ W, K1 E/ A3 g: K6 s" g当时我们采用PC6485的材料做, 结果是胶都融化了.
, H. @2 W( V( Y# J0 }: m: d7 m. J$ @8 f; C3 a+ D2 X7 }$ r
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.
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谢谢各位了. |
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