The measurement of thermal resistivity of soil and backfill materials to include concrete, engineered backfills, grout, rock, sand, and any other material used to encase the cable system installed in the ground is covered in this guide. A thorough knowledge of the thermal properties of a soil or backfill material enables the user to properly design, rate, and load underground cables. The method used is based on the theory that the rate of temperature rise of a line heat source is dependent upon the thermal constants of the medium in which it is placed. The designs for both laboratory and field thermal probes are also described in this guide.
- Standard Committee
- PE/IC - Insulated Conductors
- Status
- Active Standard
- PAR Approval
- 2016-12-07
- Superseding
- 442-1981
- Board Approval
- 2017-09-28
- History
-
- Published:
- 2018-05-07
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/IC - Insulated Conductors
- Working Group
-
C25W/P442_WG - Working Group for Guide for Soil Thermal Resistivity Measurements - IEEE 442
- IEEE Program Manager
- Dalisa Gonzalez
Contact Dalisa Gonzalez - Working Group Chair
- Nimesh Patel
Other Activities From This Working Group
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No Active Projects
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
No Active Standards
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
442-1981
IEEE Guide for Soil Thermal Resistivity Measurements
A method for measurement of soil thermal resistivity that is based on the theory that the rate of temperature rise of a line heat source is dependent upon the thermal constants of the medium in which it is placed is given. This information will enable the user to properly install and load underground cables. The aim is to provide sufficient information to enable the user to select useful commercial test equipment, or to manufacture equipment that is not readily available on the market, and to make meaningful resistivity measurements with this equipment, in the field or on soil samples in the laboratory. Designs for both laboratory and field thermal needles are described.
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
No Inactive-Withdrawn Standards
These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
No Inactive-Reserved Standards