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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/ X4 r( \9 I l, x' V( A+ [5 d
8.22 Test specifications of non-separable thin sheet material; B! x: a" Z! {3 [6 Y
Compliance is checked by subclause 26.3 in IEC 61558-1or by the following:
5 i9 P4 i' ]+ P9 X4 ]" G4 kThree test samples, each individual sample consisting of three or more layers of non-separable, S- D; h4 T3 g' m" v- t0 x: T d
thin sheet material forming REINFORCED INSULATION, are used. One sample at a time is fixed to# s0 V( b! F( b! Z% n% A2 [
the mandrel of the test fixture (Figure 14) as shown in Figure 15." J2 @7 F4 K5 s+ s" ?" p
Copyright InternationalA downward force of 150 N ± 10 N is applied to the free end of the sample (see Figure 16),! ?$ a3 m0 _0 u% r' c
using an appropriate clamping device. The mandrel is rotated by hand without jerks
0 ?$ E( m0 b) U$ A( E% t- j( d' s– from the initial position (Figure 15) to the final position (Figure 16) and back;
4 D3 e5 k, @" y! z/ k6 q% v– as above for the second time;% g' M. z9 [7 i9 g! g/ y7 ]/ O$ F
– from the initial position to the final position.- t; ]) B8 C/ ^) O: b
If a sample breaks during rotation where it is fixed to the mandrel or the clamping device, this. m: s, U& f# z8 s& g# |1 g
does not constitute a failure and the test is repeated on a fresh sample. If a sample breaks at
B' ^- X" x% u' i) H/ k5 nany other place, the test has failed." L8 ?% Z* O7 ]) L
After this preconditioning, a sheet of metal foil, 0,035 mm ± 0,005 mm thick, at least 200 mm
8 I: \% v4 h- }/ u8 Jlong, is placed along the surface of the sample, hanging down on each side of the mandrel% Q$ h [3 _/ A/ P) x9 d; M
(see Figure 16). The surface of the foil in contact with the sample shall be conductive, not
+ f+ R- k7 @. m! s+ {oxidised or otherwise insulated. The foil is positioned so that its edges are not less than 18 mm
0 c2 C) k1 H0 x! G$ V% ifrom the edges of the sample (see Figure 17). The foil is then tightened by two equal weights,
; T B( a0 Y! W- `2 y5 H8 Cone at each end, using appropriate clamping devices.
) r. W; X6 x' {, `1 UWhile the mandrel is in its final position, and within the 60 s following the final positioning, a$ V# q- V0 r! ]0 a6 `
dielectric strength test is applied between the mandrel and the metal foil in accordance with3 W4 D$ m+ B9 H/ t, n
10.3.2, using a test voltage of 1,5 times the value specified in Table 5 for REINFORCED
# M* r z8 \/ h1 {1 b! qINSULATION, but not less than 5 kV.. N& j2 d4 ]3 Y$ H6 _0 F; K
The entire test procedure is repeated on the other two samples.6 d; K k3 |9 E C( K1 D/ _* _
No flashover or breakdown shall occur during the test; corona effects and similar phenomena being disregarded.' B6 ]3 ~; a0 P! K: s
6 a: k: A8 ?6 z g% |: S- k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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