|
|
以面两种情况OK
4 F, k* K& Q$ S5 Y/ y1， 加一层厚于1mm的套管' b7 b8 Q$ i* Y. D
2，加两层可套管（每层需分别可通过电气强度测试）
9 y. y( ]2 m! D0 Y1 a, v% N) m+ f7 P2 O/ i/ g% z
标准要求如下：
9 K6 v2 V9 ^: B& R29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,' R8 _8 o; r& }# |. b! Q, J# p
or have a sufficient number of layers, to withstand the electrical stresses that can be expected
2 H0 E( t* {6 D1 e3 k8 r* ?during the use of the appliance.
- `; _: H6 U: G8 h* n/ vCompliance is checked- ~% f6 r X' u$ p! L' e& e
– by measurement, in accordance with 29.3.1, or$ C [6 w% u; q D
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more5 n, [% a m% {& K' H9 Y
than one separate layer, other than natural mica or similar flaky material, or
5 C6 Q% |' ]: g: \, m# x9 T8 L4 @– by an assessment of the thermal quality of the material combined with an electric strength
/ @+ `0 Y( b1 P4 b2 X+ z6 mtest, in accordance with 29.3.3 and for accessible parts of reinforced insulation
~2 _4 a: u2 z7 N" G( e. Aconsisting of a single layer, by measurement in accordance with 29.3.4, or$ U$ M5 a3 z; B2 @2 y* q
– as specified in Subclause 6.3 of IEC 60664-4 for insulation that is subjected to any& _! B6 Z1 F! ~" n& O/ G
periodic voltage having a frequency that exceeds 30 kHz.
) ]" M# {, e& v8 I# G- J. [29.3.1 The thickness of the insulation shall be at least
( i; C( t* D, G4 n– 1 mm for supplementary insulation;
: h% v; i& |5 r2 p# Y– 2 mm for reinforced insulation.
4 R! E! r, T4 N1 j4 U29.3.2 Each layer of material shall withstand the electric strength test of 16.3 for- Z: A" a! r% s# b4 a: S
supplementary insulation. Supplementary insulation shall consist of at least 2 layers of. \" l. C, K$ B! n& U+ m; t* P1 ^
material and reinforced insulation of at least 3 layers.. }* D/ H& E9 S \ `% Z
29.3.3 The insulation is subjected to the dry heat test Bb of IEC 60068-2-2 for 48 h at a3 \8 o B* f! J% n0 s& k; i
temperature of 50 K in excess of the maximum temperature rise measured during the test of
1 n% C8 W: E6 H6 L; x& A! HClause 19. At the end of the period, the insulation is subjected to the electric strength test of% @. W. O2 |6 Q: r) ?
16.3 at the conditioning temperature and also after it has cooled down to room temperature.
% B) V' I& H1 D5 s% {9 c* dIf the temperature rise of the insulation measured during the tests of Clause 19 does not/ I, h; Z1 k1 z1 y6 D" {" ~) l7 h
exceed the value specified in Table 3, the test of IEC 60068-2-2 is not carried out.
0 B$ i3 a3 w: q. `- M1 S% B, @+ ]# I8 [, M- c# {! N6 N/ Q$ q* F
|
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2013-5-5 08:12
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡
个人认为，需要符合绝缘耐热，绝缘就是附加绝缘的耐压试验，耐热应当没问题，如果有认证自然更好，但是29章貌似对附加绝缘有厚度要求，你的绝缘胶布行吗？
楼主