绝缘电缆导体的标称截面积和成分

[中文适用范围]： 规定了从 0.5 mm2 到 2 000 mm2 的标准化标称横截面积、电线的数量和直径以及电缆和软线中导体的电阻值。对导体进行分类： 1) 固定安装电缆 - 1 类，实心导体； - 2 类，绞合导体。 2) 软铜导体 - 5 级， - 6 级（比 5 级更柔软）。包括导体电阻温度修正系数 kt 表，用于修正 t °C 至 20°C 时测量的电阻。不适用于电信用途的导体。仅当电缆类型规范中注明时才适用于特殊设计的导体。例如，特殊设计的导体。用于压力电缆的导体、超柔性焊接电缆中的导体或特殊类型的柔性电缆中的导体，用于将芯线以异常短的绞距绞合在一起。本出版物取代 IEC 180 (1965)。注： - 在此版本中，导体类别的数量已从 6 类减少到 4 类。 [外文原描述]： Specifies standardized nominal cross-section areas from 0.5 mm2 to 2 000 mm2, numbers and diameters of wires and resistance values of conductors in electric cables and flexible cords. Classifies conductors for: 1) Cables for fixed installations - Class 1, solid conductors; - Class 2, stranded conductors. 2) Flexible copper conductors - Class 5, - Class 6 (more flexible than Class 5). Includes table of temperature correction factors kt for conductor resistance to correct the measured resistance at t °C to 20°C. Does not apply to conductors for telecommunication purposes. Applies to conductors of special design only when stated in the specification for the type of cable. Conductors of special design are, for example. conductors for pressure cables, conductors in extra-flexible welding cables or in special types of flexible cables for having the cores twisted together with unusually short lays. This publication supersedes IEC 180 (1965). Note: - In this edition, the number of classes of conductors has been reduced from 6 to 4.