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以面两种情况OK; }$ Z( i, J# `4 F
1， 加一层厚于1mm的套管
2 s. z( S# F4 c. R) x7 l* _2，加两层可套管（每层需分别可通过电气强度测试）
* b, e, @2 C, b: d) E3 }! E* | V, |9 ~
标准要求如下：( E- J* ?7 V+ @6 S0 g
29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,/ a% A' f( C& R2 n) Z
or have a sufficient number of layers, to withstand the electrical stresses that can be expected2 o* {/ f9 F& v9 q
during the use of the appliance.
1 Q% b9 Y$ x' h; J7 t3 P; pCompliance is checked8 t! a2 \( h# ^, Y1 w0 u+ @
– by measurement, in accordance with 29.3.1, or7 g( B( [4 @; F$ o
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more' Z% \/ X0 O2 e. F" a; S
than one separate layer, other than natural mica or similar flaky material, or
0 x" ?, ? d' p1 j% T% Z( i– by an assessment of the thermal quality of the material combined with an electric strength
9 Y# g8 }8 U2 n0 `# Vtest, in accordance with 29.3.3 and for accessible parts of reinforced insulation6 o/ K, K- v( p/ C* t
consisting of a single layer, by measurement in accordance with 29.3.4, or* r9 }8 u$ r) n
– as specified in Subclause 6.3 of IEC 60664-4 for insulation that is subjected to any
6 ?- L' X) M' K0 c& Fperiodic voltage having a frequency that exceeds 30 kHz.
6 R$ Y. a4 K: |; I! {29.3.1 The thickness of the insulation shall be at least/ G! }& x9 W( _- x
– 1 mm for supplementary insulation;
3 ^" u- I8 w6 d3 T. M– 2 mm for reinforced insulation." h4 q6 z4 j2 v% }, D& p _( |6 q) G4 S
29.3.2 Each layer of material shall withstand the electric strength test of 16.3 for
+ k6 _, `0 J8 K- E4 Ksupplementary insulation. Supplementary insulation shall consist of at least 2 layers of
. ?4 d* K/ \% \, f) ^0 |2 Tmaterial and reinforced insulation of at least 3 layers.
( B3 y( F& g7 {( M) y5 z: n' E: |29.3.3 The insulation is subjected to the dry heat test Bb of IEC 60068-2-2 for 48 h at a
/ n/ K3 w& F& p9 I7 etemperature of 50 K in excess of the maximum temperature rise measured during the test of
' }' V* I& B+ T5 |Clause 19. At the end of the period, the insulation is subjected to the electric strength test of4 G; C h1 ]3 o P( [: R
16.3 at the conditioning temperature and also after it has cooled down to room temperature.
; ^! @) ]; m( ^" OIf the temperature rise of the insulation measured during the tests of Clause 19 does not7 n6 C( r) G: t) q
exceed the value specified in Table 3, the test of IEC 60068-2-2 is not carried out.
4 U+ l9 G) i& a- D# d- J: W7 F% ?( M, B$ K J7 h
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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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