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以面两种情况OK q8 \; S! n0 L8 m
1， 加一层厚于1mm的套管
( G" b5 `% W/ M3 ^$ m2 |2，加两层可套管（每层需分别可通过电气强度测试）6 t0 p- Z- }; }, e
; w0 _' d* J8 R2 B; C; P3 [
标准要求如下：6 D a, N0 V& I$ Y% K2 E
29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,
9 S+ X) P! d& ?/ t$ F! Nor have a sufficient number of layers, to withstand the electrical stresses that can be expected
f+ Z) O4 `. p+ E& Oduring the use of the appliance.3 C# T# B6 K" z0 p' E& V
Compliance is checked
% G0 m2 k5 Q$ I9 O– by measurement, in accordance with 29.3.1, or
$ O. G, h/ ]5 c2 [, n– by an electric strength test in accordance with 29.3.2, if the insulation consists of more% X: X( o! U( x
than one separate layer, other than natural mica or similar flaky material, or
3 S. Q+ Q) C5 S– by an assessment of the thermal quality of the material combined with an electric strength, b: n) x* N' C: O# F2 @
test, in accordance with 29.3.3 and for accessible parts of reinforced insulation
. k% e; R0 i! v& G+ \consisting of a single layer, by measurement in accordance with 29.3.4, or8 T: L- w& B: x/ y% ]
– as specified in Subclause 6.3 of IEC 60664-4 for insulation that is subjected to any
) T) L+ k" r: i- s; Qperiodic voltage having a frequency that exceeds 30 kHz.4 M2 R. n* J! r5 `
29.3.1 The thickness of the insulation shall be at least
2 z* s9 b7 ]) p& _0 `- O– 1 mm for supplementary insulation;$ ?1 }2 \1 B, N" N; c: k
– 2 mm for reinforced insulation.( \- ~% M& a6 S& ?1 H2 Y
29.3.2 Each layer of material shall withstand the electric strength test of 16.3 for
% ^! h5 {3 c. O2 Y# D3 _$ Nsupplementary insulation. Supplementary insulation shall consist of at least 2 layers of
5 ~* l4 M& N H5 |& g; v, _( t$ jmaterial and reinforced insulation of at least 3 layers.
, A; K8 I% u2 L, ^( H3 v* N29.3.3 The insulation is subjected to the dry heat test Bb of IEC 60068-2-2 for 48 h at a. d5 o8 L& _) ]% x7 V# e
temperature of 50 K in excess of the maximum temperature rise measured during the test of
# M8 \: c2 u0 e: T# q: E+ NClause 19. At the end of the period, the insulation is subjected to the electric strength test of7 b2 g7 h% e0 \2 z5 |) X9 m7 I+ U- W
16.3 at the conditioning temperature and also after it has cooled down to room temperature.4 }# q. |0 ?/ W% @4 Q; S Y, c
If the temperature rise of the insulation measured during the tests of Clause 19 does not
8 r# A+ N1 b4 F F3 O+ X3 Wexceed the value specified in Table 3, the test of IEC 60068-2-2 is not carried out.
. l+ l# P, Y3 [: `; }, s# ]' z ^( C" `# ~/ S ?% z
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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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