[attach]37201[/attach]
IEC60719-1992
额定电压450/750V及以下圆形铜导体电缆平均外径上限和下限的计算方法
Calculationofthelowerandupperlimitsfortheaverageouterdimensionsofcableswithcircularcopperconductorsandofratedvoltagesuptoandincluding450/750V