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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:
3 A$ {: t" Q2 r% I23.5 The insulation of internal wiring that is subjected to the supply mains voltage shall withstand the electrical stress likely to occur in normal use.! t2 ~/ `, g4 ]' Q" B8 D
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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.6 G: }; l, N! O" |% w
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.& D& u# m$ t2 y
NOTE 1 If the basic insulation of the conductor does not fulfil one of these conditions, the conductor is considered to be bare.
# M' R3 E. Z% k6 G( lNOTE 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.
' p7 J1 R* F8 }# k4 G% b4 [A single layer of internal wiring insulation does not provide reinforced insulation.' t" b$ u: N+ E: }
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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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