|
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:
" Q2 Q b$ F" S% F3 W8 r! P- n( j30.1 Pressure test at high temperature
, n4 `' P0 m1 d2 xThe specimens are tested by means of the apparatus shown in figure 41. This apparatus has. u0 S$ p5 [! q" @7 \6 Z& o7 ?
a rectangular blade (see figure 41a) with an edge 0,7 mm wide, to be used in the case of, A, C, Q* J3 t- S! X
round pins, or a blade having a round shape (see figure 41b), with a diameter of 6 mm and an2 H' {7 L: D1 a+ u- q* e
edge of 0,7 mm, in other cases. G! Z6 o9 R7 Q X7 \, N/ b6 R
The specimens are placed in position as shown in figure 41.! l. ]+ | \9 S, A- b9 ^$ ]6 i" o
The force applied through the blade is 2,5 N.0 C- o1 {2 Q4 ^& ], ?, j4 ^$ y
The apparatus, with the specimen in position, is maintained for 2 h in a heating cabinet at a* ~. F8 Z+ S" J- M; x7 A
temperature of (200 ± 5) °C.1 x! h$ D$ \- @6 \1 y7 |, G+ N! n4 r
The specimen is then removed from the apparatus and, within 10 s, cooled by immersion in
3 k7 n! v0 R4 {+ O& |" t* ecold water.
0 Y3 f* q5 r6 b! }- i t9 n( bThe thickness of the insulation remaining at the point of impression is measured and shall not
. s* x7 t1 W/ K7 k* lhave been reduced by more than 50 % of its original value measured at the start of the test.
! j1 H7 G" c9 RNOTE The values 2,5 N and (200 ± 5) °C are provisional.+ q( M: N- G7 k
$ I" X$ q+ b/ ~4 `0 }6 h; Q$ ]0 @
当时我们采用PC6485的材料做, 结果是胶都融化了.
4 h* @# B+ E8 F1 H ?+ k4 o) L/ L# q& u& O
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.8 D8 V3 B" o& c8 C5 M
0 L6 m7 ^/ S% f" l# T, j
谢谢各位了. |
|