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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
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Title A Study on the Apply to Soil Thermal Resistivity of Low-Voltage Underground Power Cables
Authors Joo-Chul Lee ; Gi-Hyun Kim ; young-Chul Lee
DOI http://dx.doi.org/10.5207/JIEIE.2012.26.5.065
Page pp.65-70
ISSN 1225-1135
Keywords Thermal Resistivity of Soil ; IEC Standards ; Current-Carrying Capacities
Abstract The current-carrying capacities in IEC standards for underground refers to a soil thermal resistivity of 2.5[K?m/W] where no measured data are available. But this value is considered too conservative and may not justifiable economically as to need precaution in using the value. In this paper, the standard practices on the application of soil thermal resistivity of some countries(UK, USA etc) are surveyed and proposed a reasonable representative value 1.0[K?m/W] of soil thermal resistivity considering the domestic soil thermal properties with regard to the application of IEC standard.