IEC 60502-1:20 21作为IEC 60502-1:20 21 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60502-1:20 21规定了固定装置（如配电网或工业装置）额定交流电压为1 kV（Um=1,2 kV）和3 kV（Um=3,6 kV）的挤压固体绝缘电力电缆的结构、尺寸和测试要求。如果制造商声明，根据本文件设计和测试的额定交流电压为1 kV（Um=1,2 kV）的电缆也可用于带电导体和中性点/地之间的标称电压≤750 V DC（最大值为900 V DC）或两个带电导体之间的标称电压≤1 500 V DC（最大值为1 800 V DC）的DC配电系统。根据当地安装法规考虑直流系统的适用铁芯标识。

IEC 60502-1:2021 is available as IEC 60502-1:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60502-1:2021 specifies the construction, dimensions and test requirements of power cables with extruded solid insulation for rated AC voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV) for fixed installations such as distribution networks or industrial installations. Cables of rated AC voltage 1 kV (Um = 1,2 kV) designed and tested in accordance with this document can also be used, if declared by the manufacturer, in DC distribution systems having their nominal voltage ≤ 750 V DC (with a maximum of 900 V DC) between a live conductor and neutral/earth, or ≤ 1 500 V DC (with a maximum 1 800 V DC) between two live conductors. Applicable core identification for DC systems are considered in accordance with local installation regulations.