IEC 60502-10 is an international standard that specifies the construction, performance, and testing requirements for power cables with rated voltages up to 18/30(36)kV. This standard is applicable for both indoor and outdoor installations, covering the requirements for single-core as well as multi-core cables.
Cable Construction
The construction of power cables according to IEC 60502-10 involves various layers that ensure efficient and safe power transmission. The core consists of conductors made of copper or aluminum, which are surrounded by insulation material. For cables with three or more cores, they are typically laid-up together with a non-hygroscopic filler. An extruded layer of Polyvinyl Chloride (PVC), Cross-Linked Polyethylene (XLPE), or other suitable materials is used as the overall sheath.
Performance Requirements
IEC 60502-10 sets specific requirements for the electrical, mechanical, and thermal performance of power cables. Electrical parameters such as voltage rating, current capacity, and impedance are specified to ensure proper functionality under nominal operating conditions. Mechanical properties, including tensile strength, bending radius, and resistance to impact, are defined to guarantee durability during installation and operation. Thermal characteristics, like maximum operating temperature and short-circuit temperature limit, are essential to prevent any damage to the cables.
Testing and Compliance
To ensure compliance with IEC 60502-10, power cable manufacturers need to perform a variety of tests. These tests evaluate the cable's ability to withstand electrical, mechanical, and environmental stresses. Some of the commonly conducted tests include a voltage withstand test, conductor resistance measurement, dimensional checks, insulation resistance measurement, and visual inspection. Compliance with this standard assures the quality, reliability, and safety of power cables used in various applications such as utilities, industrial plants, and commercial buildings.
Nina She