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Factors Affecting the Sheath Losses in Single-Core Underground Power Cables

Factors Affecting the Sheath Losses in Single-Core Underground Power Cables
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Copyright: 2016
Pages: 61
Source title: Environmental Impacts on Underground Power Distribution
Source Author(s)/Editor(s): Osama El-Sayed Gouda (Cairo University, Egypt)
DOI: 10.4018/978-1-4666-6509-5.ch010

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Abstract

Power losses in underground cables cause temperature rise of the cables during their operation, there are two types of a power losses generated in the cables: current dependent powers and voltage dependent powers. Current dependent powers refer to the heat generated in metallic cable components (conductors, sheaths etc.); voltage dependent powers refer to the powers in cable insulation . Sheath losses are current dependent and their values in single-core underground power cables cannot be disregarded as they, in some cases, could be greater than power losses in the conductors. Sheath losses in single-core cables depend on a number of factors, these factors are:

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