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以面两种情况OK) y4 C6 ]# [$ D: }$ Q, K
1， 加一层厚于1mm的套管- ~% j& E3 h6 E
2，加两层可套管（每层需分别可通过电气强度测试）, D6 m5 ?$ H" {1 ?4 s h# x
9 k& A* D% M, I+ f( ~9 `2 R* H
标准要求如下：; v( A% M+ `: C+ ~) B0 V6 x
29.3 Supplementary insulation and reinforced insulation shall have adequate thickness,( N r! t% q, C
or have a sufficient number of layers, to withstand the electrical stresses that can be expected! l" c* ], I1 L0 t
during the use of the appliance.
T& w! Y+ C; u' f; gCompliance is checked* T( x. Q- }9 O$ Y
– by measurement, in accordance with 29.3.1, or6 [! G0 }( @( @ J" S! {
– by an electric strength test in accordance with 29.3.2, if the insulation consists of more- {, f3 }# ~# _0 e3 q$ G* S4 K
than one separate layer, other than natural mica or similar flaky material, or& j6 s: ?4 Y1 Y* w7 d/ A/ l+ M7 a4 D
– by an assessment of the thermal quality of the material combined with an electric strength* [4 X6 t, @6 l X
test, in accordance with 29.3.3 and for accessible parts of reinforced insulation
: a5 [5 D0 u. y& {3 a) B% pconsisting of a single layer, by measurement in accordance with 29.3.4, or: I) ?$ f% L& @) n0 {
– as specified in Subclause 6.3 of IEC 60664-4 for insulation that is subjected to any
9 R4 P9 o3 {" x; U7 [# I7 O1 B; f7 Fperiodic voltage having a frequency that exceeds 30 kHz.
' d4 V% U; O) ^: b6 F) b3 G* H9 p! f29.3.1 The thickness of the insulation shall be at least
6 `# ^0 s# Z/ L" B% D/ A– 1 mm for supplementary insulation;3 r# M3 n+ U, k( n _
– 2 mm for reinforced insulation.3 n: ]3 X3 f/ [ X, ^9 P8 X! ?
29.3.2 Each layer of material shall withstand the electric strength test of 16.3 for
( U2 J# `9 t2 Z- S0 y% `supplementary insulation. Supplementary insulation shall consist of at least 2 layers of- `) ]+ F( e6 u" `. b
material and reinforced insulation of at least 3 layers.
+ a$ n) t0 V2 I0 R8 c a29.3.3 The insulation is subjected to the dry heat test Bb of IEC 60068-2-2 for 48 h at a+ r8 @5 ^5 A5 W
temperature of 50 K in excess of the maximum temperature rise measured during the test of
8 c4 z: K# ^7 [( g. c5 mClause 19. At the end of the period, the insulation is subjected to the electric strength test of
: X/ X4 d N/ r ^' K v. _! i16.3 at the conditioning temperature and also after it has cooled down to room temperature.
# {# i% p5 [9 Q- J/ y4 ?If the temperature rise of the insulation measured during the tests of Clause 19 does not. h0 L# f/ P5 N' g
exceed the value specified in Table 3, the test of IEC 60068-2-2 is not carried out.2 h0 E- R7 F; m1 M4 y0 T- Q& v- F
" `& I+ m( [1 N0 v ]( c, a |
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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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