HD 632 S3 Extruded Insulated Power Cables and Accessories for Rated Voltages between 36 kV (Um = 42 kV) and 150 kV (Um = 170 kV)

The HD 632 S3 standard, designed by the European Committee for Electrotechnical Standardization (CENELEC), describes the requirements and defines test methods for power cable systems, standalone cables and standalone accessories, including fixed installations and rated voltages above 36 kV (Um = 42 kV) and 150 kV (Um = 170 kV).

The requirements apply to single-core cables and individually shielded three-core cables and their accessories for normal installation and operating conditions. However, special cables and accessories such as submarine cables where changes in standard tests or special test conditions need to be designed are not covered by this standard.

Extruded cable systems, particularly cross-linked polyethylene, are increasingly in demand for underground transmission all over the world. These cable systems have several advantages over legacy paper-insulated tubing and stand-alone cables. However, care is required to properly design, successfully install and ensure long-term operation. Polyethylene has good electrical properties. It has a low dielectric dissipation factor, which makes it potential for use, especially at much higher voltages than PVC. Polyethylene has been and continues to be used as a cable insulator, but its application as a thermoplastic material is limited by thermal restrictions.

The effect of crosslinking is to prevent the relative movement of molecules under heat excitation, which provides better stability at high temperatures compared to thermoplastic materials. This allows higher operating temperatures under both normal loading and short circuit conditions.

Our organization, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, with its trained and expert staff and advanced technological equipment, within the scope of HD 632 S3 standard, rated voltage 36 kV (Um = 42 kV) and 150 kV (Um = It also provides testing services for extruded insulated power cables and accessories for rated voltages between 170 kV).