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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:- y' E* ?0 F1 b
30.1 Pressure test at high temperature
7 v& m* R8 ~' C$ lThe specimens are tested by means of the apparatus shown in figure 41. This apparatus has
7 E# r: R2 E0 Z* ?' ^7 ]a rectangular blade (see figure 41a) with an edge 0,7 mm wide, to be used in the case of% e* p+ M8 r' M) }8 K# \8 ?; U
round pins, or a blade having a round shape (see figure 41b), with a diameter of 6 mm and an4 o% C! j" t2 q
edge of 0,7 mm, in other cases.; K3 V @* l9 Z1 {+ k- D# t. ~2 u
The specimens are placed in position as shown in figure 41.
5 c x4 [- W! ?7 R+ CThe force applied through the blade is 2,5 N.
9 R3 l: }; E( j$ L' AThe apparatus, with the specimen in position, is maintained for 2 h in a heating cabinet at a
) ?! u% R) ^6 O8 t7 r% i# J( r# \; F/ Xtemperature of (200 ± 5) °C., c9 c6 {0 l+ t1 u9 h3 i
The specimen is then removed from the apparatus and, within 10 s, cooled by immersion in7 O& }" r4 a' e; ~
cold water.
. Q7 \7 \, b+ w% r$ g2 D8 j CThe thickness of the insulation remaining at the point of impression is measured and shall not
+ q& f; e" g* {" Zhave been reduced by more than 50 % of its original value measured at the start of the test.' [! e- |( Q ~4 y1 b0 l6 p5 ?
NOTE The values 2,5 N and (200 ± 5) °C are provisional.( M! j8 d4 g5 W) v- x+ M* I' M7 P0 F
; S( h0 _- I l( p, x0 P- k6 n当时我们采用PC6485的材料做, 结果是胶都融化了.3 K% H. r' L- @& w* l. G! ?
+ i8 }; n, d1 t+ i' f( l! E: s2 Z
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.
: [( P# k. E+ E G- I
* E4 g" D, j6 [8 Z$ C谢谢各位了. |
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发表于 2008-7-18 10:48
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