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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:
9 V( ^! Z3 g) ]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.& d/ c4 F2 l4 O# i; B
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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.
+ V" z) W2 |( ^, T7 a& S: tA 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.0 C6 z( D3 X$ M
NOTE 1 If the basic insulation of the conductor does not fulfil one of these conditions, the conductor is considered to be bare. v. J! w, u# \+ r' k& K+ c/ w# N0 y- l
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.
$ \$ f: h! W$ XA single layer of internal wiring insulation does not provide reinforced insulation.9 ]- `. x& ^% }, T4 y4 {
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2 {( T- @4 t& G1 T! z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。
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