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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: V& @: p$ n3 Y% y4 z
30.1 Pressure test at high temperature
) x" P; G9 v/ Y- \8 FThe specimens are tested by means of the apparatus shown in figure 41. This apparatus has
' k8 c9 R5 }6 e6 T* j) Qa rectangular blade (see figure 41a) with an edge 0,7 mm wide, to be used in the case of
- j/ M3 I7 `. yround pins, or a blade having a round shape (see figure 41b), with a diameter of 6 mm and an; r1 r5 n% r+ ?: M4 |
edge of 0,7 mm, in other cases.6 w8 C) q$ f" D! |# ]9 r: z
The specimens are placed in position as shown in figure 41.
4 h% J7 Y1 y6 }9 T8 ?5 m5 I- JThe force applied through the blade is 2,5 N.1 P4 B6 e7 ` t+ y
The apparatus, with the specimen in position, is maintained for 2 h in a heating cabinet at a7 l8 M9 W; z% z. q! I
temperature of (200 ± 5) °C.
4 P Y1 t! E8 x" aThe specimen is then removed from the apparatus and, within 10 s, cooled by immersion in3 j" Y4 L4 }% u5 A4 G, v1 m' V1 s
cold water.8 h+ m' I2 q( N: @
The thickness of the insulation remaining at the point of impression is measured and shall not
, @5 L! J1 Z8 c2 O' \$ k; u) b" shave been reduced by more than 50 % of its original value measured at the start of the test.
- l# o# E1 r, F' p @NOTE The values 2,5 N and (200 ± 5) °C are provisional.) ?# x1 x9 A1 U) l% a" B
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当时我们采用PC6485的材料做, 结果是胶都融化了.+ i4 N9 S: O; z3 h- f+ K
/ J4 ~& P* l- D! b
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.# a3 F# w2 u4 M; }& X( V" v
/ o0 v5 _) I4 ~; c: C( h$ Z+ `谢谢各位了. |
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发表于 2008-7-18 10:48
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