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IEC60065:2001+A1:2005《音频、视频及类似电子设备安全要求》中新增了8.22条对不可分离薄层材料的测试规定
' N- \. U. @% W7 X8 ?8.22 Test specifications of non-separable thin sheet material8 X$ C; K0 h; U, y7 \2 ^4 j# f
Compliance is checked by subclause 26.3 in IEC 61558-1or by the following:
5 k) L2 r7 j$ r4 D" K6 w, wThree test samples, each individual sample consisting of three or more layers of non-separable
* v8 T, w! x2 U1 h+ b2 b/ wthin sheet material forming REINFORCED INSULATION, are used. One sample at a time is fixed to( X u- R0 s4 F* V% M6 W
the mandrel of the test fixture (Figure 14) as shown in Figure 15.1 X9 G. }4 ~" l# w3 q
Copyright InternationalA downward force of 150 N ± 10 N is applied to the free end of the sample (see Figure 16),
; ~2 h/ X( q$ N+ M$ t3 Cusing an appropriate clamping device. The mandrel is rotated by hand without jerks S+ y+ v7 n( ?/ k; T
– from the initial position (Figure 15) to the final position (Figure 16) and back;
: Z/ O9 k. C4 P9 y: a9 m– as above for the second time;/ D6 W9 |. w* F( f, K& ~
– from the initial position to the final position.
& S/ a2 h. ]/ I/ |8 K! B* @' nIf a sample breaks during rotation where it is fixed to the mandrel or the clamping device, this
6 B3 f* i7 z) \4 h& Sdoes not constitute a failure and the test is repeated on a fresh sample. If a sample breaks at9 ~: |; {' f8 W) C- |1 T. v
any other place, the test has failed.2 H5 i" E" ?$ {
After this preconditioning, a sheet of metal foil, 0,035 mm ± 0,005 mm thick, at least 200 mm
0 j o/ x) K) Klong, is placed along the surface of the sample, hanging down on each side of the mandrel
4 h& a2 ]0 F9 f3 ^$ H8 r x. m2 u(see Figure 16). The surface of the foil in contact with the sample shall be conductive, not- s: i3 f1 w, q$ h
oxidised or otherwise insulated. The foil is positioned so that its edges are not less than 18 mm" W7 `, d% X# i/ I8 ]
from the edges of the sample (see Figure 17). The foil is then tightened by two equal weights,
9 m; H" w/ F% P Y& \( I2 B$ Z% ?one at each end, using appropriate clamping devices.0 A5 t0 b$ {" J6 Z
While the mandrel is in its final position, and within the 60 s following the final positioning, a
; m& g4 I2 r' O- Udielectric strength test is applied between the mandrel and the metal foil in accordance with
' P1 Q8 j- o% T* g. h+ `10.3.2, using a test voltage of 1,5 times the value specified in Table 5 for REINFORCED3 Z3 p! {- i7 c6 x1 X" W" Q
INSULATION, but not less than 5 kV.; X$ F9 Y2 m( m# O3 p/ r
The entire test procedure is repeated on the other two samples.
% ?$ Q( a8 ]$ KNo flashover or breakdown shall occur during the test; corona effects and similar phenomena being disregarded.; u3 U; B- `0 B, G
" ?* B5 z, z7 d6 H3 v有没有哪位筒子熟悉这个新设备的,或者有相关图片介绍下,谢谢 |
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