Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Study on the Apply to Soil Thermal Resistivity of Low-Voltage Underground Power Cables

저압 지중케이블의 토양 열저항률 적용에 관한 연구

  • 이주철 (대한전기협회 기술기준처) ;
  • 김기현 (대한전기협회 기술기준처) ;
  • 이영철 (대한전기협회 기술기준처)
  • Received : 2012.03.21
  • Accepted : 2012.04.12
  • Published : 2012.05.31
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Abstract

The current-carrying capacities in IEC standards for underground refers to a soil thermal resistivity of 2.5[$K{\cdot}m/W$] 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[$K{\cdot}m/W$] of soil thermal resistivity considering the domestic soil thermal properties with regard to the application of IEC standard.

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References

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