60335单层内部线绝缘是否一定不可以当加强绝缘？

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IEC60335试验指甲

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：
5 l: N2 g$ W- P7 o: W2 }23.5 The insulation of internal wiring that is subjected to the supply mains voltage shall withstand the electrical stress likely to occur in normal use.
6 V2 b# z. Y( Z) E+ l  o' J% F" S
& s7 ]% o  {" |) wThe 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.
A 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.
NOTE 1 If the basic insulation of the conductor does not fulfil one of these conditions, the conductor is considered to be bare.
NOTE 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.
6 ~- h' C5 n4 C" iA single layer of internal wiring insulation does not provide reinforced insulation.
- b: S. J' G/ a+ w: j

" J) G2 R( Q4 l
8 k- H/ w# ?1 e2 P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。

ylgc123

现在标准的说法是不行ed5.1之后就明文规定了~