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以面两种情况OK, V+ q6 A; b4 I y9 H1 M4 E, a' I- o
1， 加一层厚于1mm的套管1 {) K/ @/ q3 M6 A- G- K/ s
2，加两层可套管（每层需分别可通过电气强度测试）
$ G6 ]" W" P7 J, n( s% w; Q q# D7 i% H
标准要求如下：7 B) ]5 J' }/ O+ V$ S. q9 N
29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,
* Y {: ?1 q4 Xor have a sufficient number of layers, to withstand the electrical stresses that can be expected! `- B- h0 z0 [6 h: S+ g& u
during the use of the appliance.+ N, o+ e% O1 ~8 z0 E
Compliance is checked5 m0 U, ^) u9 [* ^' I6 i
– by measurement, in accordance with 29.3.1, or
# c" a1 ^/ W4 W, j& l– by an electric strength test in accordance with 29.3.2, if the insulation consists of more
# a( [- @1 N9 Lthan one separate layer, other than natural mica or similar flaky material, or
. B5 l- F- J- D1 A/ {% E– by an assessment of the thermal quality of the material combined with an electric strength
; L5 ~! G& i& S% mtest, in accordance with 29.3.3 and for accessible parts of reinforced insulation9 j I) ^# U! n, t6 \5 d& |
consisting of a single layer, by measurement in accordance with 29.3.4, or
9 T l: t* I( K) R8 B) I+ T3 H– as specified in Subclause 6.3 of IEC 60664-4 for insulation that is subjected to any
( n1 {6 F+ G1 gperiodic voltage having a frequency that exceeds 30 kHz.
, l4 R9 i1 O- g5 i29.3.1 The thickness of the insulation shall be at least
3 B' Y2 A1 z) k8 \– 1 mm for supplementary insulation;
: y$ T# g2 b- Z1 I" n, Z– 2 mm for reinforced insulation.4 \1 `& |; \4 w6 T9 Q, ~- M
29.3.2 Each layer of material shall withstand the electric strength test of 16.3 for4 ~9 h, O6 l, ]7 ~
supplementary insulation. Supplementary insulation shall consist of at least 2 layers of
: ~$ G: p/ t( e8 U% L& \material and reinforced insulation of at least 3 layers.8 O8 v- v2 K* \- {0 w
29.3.3 The insulation is subjected to the dry heat test Bb of IEC 60068-2-2 for 48 h at a
- S$ ~% a7 e) G1 R* mtemperature of 50 K in excess of the maximum temperature rise measured during the test of$ w+ n$ ^5 e: U# d! ?1 l# g( Z9 Y a
Clause 19. At the end of the period, the insulation is subjected to the electric strength test of; K6 {6 i( {) D. P! J0 B$ Z
16.3 at the conditioning temperature and also after it has cooled down to room temperature.$ J6 K" t# S5 a; H) U
If the temperature rise of the insulation measured during the tests of Clause 19 does not5 x) h" O/ O/ k. K
exceed the value specified in Table 3, the test of IEC 60068-2-2 is not carried out.+ o: q, Q7 N* x/ m9 H M+ M
9 v' Z5 @+ y/ i1 i$ U |
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发表于 2013-5-5 08:12
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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？
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