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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:1 B# a0 W% c! B1 R! ?- R' |0 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.
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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.. ?; k- h/ U5 G4 N
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." U; t4 c, `1 w3 K- e# q$ W! P8 L$ p. v( \
NOTE 1 If the basic insulation of the conductor does not fulfil one of these conditions, the conductor is considered to be bare.& |1 j/ Y/ |9 |2 E
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.( r V E9 k! t# ?) Q- ]3 r
A single layer of internal wiring insulation does not provide reinforced insulation.
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4 r, j" o" T' k! n5 M" D" @& k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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