IEC 60840 is an internationally recognized standard developed by the International Electrotechnical Commission (IEC) that defines the test methods and performance requirements for high-voltage power cable systems with extruded insulation. The standard applies to systems designed for rated voltages above 30 kV (Um = 36 kV) up to and including 150 kV (Um = 170 kV), making it the essential reference for cables used in power transmission infrastructure, grid interconnections, and large-scale industrial energy networks.

on29/12/2025

What is IEC 60840 Cable?

IEC 60840 is an internationally recognized standard developed by the International Electrotechnical Commission (IEC) that defines the test methods and performance requirements for high-voltage power cable systems with extruded insulation. The standard applies to systems designed for rated voltages above 30 kV (Um = 36 kV) up to and including 150 kV (Um = 170 kV), making it the essential reference for cables used in power transmission infrastructure, grid interconnections, and large-scale industrial energy networks.

IEC 60502 is an international standard published by the International Electrotechnical Commission (IEC) that sets out the specification for power cables with extruded insulation. The standard covers cables with voltage ratings from 1 kV (Um = 1.2 kV) up to 30 kV (Um = 36 kV), designed for fixed installations such as distribution networks and industrial installations. This widely recognized standard serves as a primary reference for cable manufacturers worldwide and forms the basis for numerous national and regional cable standards.

Technical Department

on29/12/2025

What is IEC 60502 Cable?

IEC 60502 對導體類型、絕緣材料和護套化合物提供了詳細規格。絕緣材料包括 PVC（最高溫度 70°C）、XLPE、EPR 和 HEPR（均為最高 90°C）。導體類別包括第 1 類（實心）、第 2 類（絞合）和第 5 類（柔性），尺寸範圍從 1.5 mm² 到 1600 mm²。護套化合物包括 PVC、PE 和用於防火敏感區域的無鹵素材料。XLPE 絕緣的標稱厚度從 0.6/1 kV 的 1.0 mm 到 18/30 kV 的 8.0 mm 不等。

HD 620 is commonly linked to the German national standard DIN VDE 0276 Part 620 and is harmonized with international standard IEC 60502-2. The standard establishes comprehensive construction requirements, dimensional specifications, and test methods that exceed the baseline requirements of IEC 60502-2. Both HD 620 and IEC 60502-2 require compulsory conductor and insulation screening, typically applied through a triple extrusion process with the insulation layer. The test methodology for compliance is set out in HD 605 subclause 2.1.1 for insulation material and HD 605 subclause 2.1.2 for sheath material.

Technical Department

on29/12/2025

What is HD620 Standard Cable?

HD 620 cables are designed for power distribution networks, industrial installations, and infrastructure applications. These medium voltage cables are suitable for permanent installation in various environments including underground, outdoor, and cable ducting installations.