Е-Публикации
Технически университет - София

Abstract: – The proper selection of power cables is a complex engineering task influenced by several factors, including the dielectric strength of the insulation system (determined by the operating voltage), installation environment (e.g., underground or overhead), conductor material and design, grounding method of metallic layers, as well as permissible voltage drop, power losses, and thermal limits. This article reviews one of the most critical aspects of modern cable design – the accurate determination of the conductor cross-sectional area. International standards such as IEC 60287 define the main parameters governing this process. The article discusses these factors and highlights their impact on the safe, reliable, and efficient operation of power cable systems.

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