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根据60335最新版标准条款23.5最后一句， 单层内部线绝缘不提供加强绝缘：
' x8 f& L% C" z9 C23.5 The insulation of internal wiring that is subjected to the supply mains voltage shall withstand the electrical stress likely to occur in normal use.
3 h2 i! c4 g; h/ Y& H) V7 @( |" Y) m0 b. S& E+ o' x9 H( Q
The basic insulation shall be electrically equivalent to the basic insulation of cords complying with IEC 60227 or IEC 60245 or comply with the following electric strength test.
+ t. i5 q. ]% _( J& N5 b0 y$ t. WA voltage of 2 000 V is applied for 15 min between the conductor and metal foil wrapped around the insulation. There shall be no breakdown.6 T! |* V2 `* s3 k
NOTE 1 If the basic insulation of the conductor does not fulfil one of these conditions, the conductor is considered to be bare.
" j- {: d, z }$ l: j) A, MNOTE 2 For class II construction, the requirements for supplementary insulation and reinforced insulation apply except that the sheath of a cord complying with IEC 60227 or IEC 60245 may provide supplementary insulation.3 i/ \4 o g4 F/ n4 p/ w9 I
A single layer of internal wiring insulation does not provide reinforced insulation.2 s$ I. Z& m, G( F* j/ y# v
0 k8 V1 b0 j% t9 S
- w2 Y _8 Z& \7 y
- j7 D8 j: @2 ]+ K& n% \4 f& a假如单层内部线绝缘的厚度达到了2mm, 也不可以当加强绝缘吗？表示极度疑惑。8 T- d" H4 t5 Q9 X
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发表于 2018-11-26 22:57
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