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以面两种情况OK) L3 F* e' V9 m; Y3 }* r* f4 A
1， 加一层厚于1mm的套管( m2 Y" @- B6 O' c6 ]) r5 l
2，加两层可套管（每层需分别可通过电气强度测试）/ B+ O5 d2 W# _( x
+ |1 S4 L, [& s. y1 {9 J! P
标准要求如下：
6 f$ A# @8 `. D! e1 R$ C# o29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,
7 ^: _3 C B; C. Por have a sufficient number of layers, to withstand the electrical stresses that can be expected1 \3 q# Y* ~3 ]" d/ Z
during the use of the appliance.
* P, p& X$ S3 \8 PCompliance is checked* p/ L8 t: o3 j3 Z+ U
– by measurement, in accordance with 29.3.1, or, T# e1 v0 }* t( G0 d
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more8 l$ w+ k. S# q T7 V
than one separate layer, other than natural mica or similar flaky material, or% Y& `1 R- q+ I; ^
– by an assessment of the thermal quality of the material combined with an electric strength7 `: z, v( L' L- _& E/ X7 S
test, in accordance with 29.3.3 and for accessible parts of reinforced insulation
' r; m2 H( [3 C! Fconsisting of a single layer, by measurement in accordance with 29.3.4, or
& r2 B0 v3 t4 G: m6 h. f– as specified in Subclause 6.3 of IEC 60664-4 for insulation that is subjected to any5 V* K- T$ v( C2 w
periodic voltage having a frequency that exceeds 30 kHz.( o# S9 w; v- ^, `% x, Q
29.3.1 The thickness of the insulation shall be at least1 o4 Z/ H1 H( j% r& J4 u$ x. w
– 1 mm for supplementary insulation;
, i4 G* ?2 O& u* W* R8 y) L; b5 W– 2 mm for reinforced insulation.1 m3 l$ c! P/ J: M2 \" ~- O8 z
29.3.2 Each layer of material shall withstand the electric strength test of 16.3 for
- t' {9 L/ k8 g) p8 _supplementary insulation. Supplementary insulation shall consist of at least 2 layers of! I7 Z0 N6 x9 c, u
material and reinforced insulation of at least 3 layers.
: x, f$ H+ p5 {8 a, ]$ e, I& P29.3.3 The insulation is subjected to the dry heat test Bb of IEC 60068-2-2 for 48 h at a
: X! F/ b! |( ^9 c0 H: r* }9 R8 E7 Xtemperature of 50 K in excess of the maximum temperature rise measured during the test of6 {. X: d8 b$ S/ b) g
Clause 19. At the end of the period, the insulation is subjected to the electric strength test of% \+ u& C+ O1 U6 A. [! A
16.3 at the conditioning temperature and also after it has cooled down to room temperature.
3 }; X& U+ B7 [7 VIf the temperature rise of the insulation measured during the tests of Clause 19 does not. E w ?' h8 V$ e* ^7 g) I) m
exceed the value specified in Table 3, the test of IEC 60068-2-2 is not carried out.6 {, z9 y) c# u- h8 w
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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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