Electrical Grounding in Cold Regions

Electrical grounding for temporary and permanent installations in cold regions is complicated by the existence of frozen soil. This is because the electrical resistivity of frozen soil can be several orders of magnitude higher than unfrozen soil, the contact resistance between the grounding electrod...

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Bibliographic Details
Main Author: Henry, Karen
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1987
Subjects:
Snow
Ice and Permafrost
Electricity and Magnetism
*ELECTRICAL GROUNDING
COLD REGIONS
ELECTRICAL RESISTANCE
ELECTRODES
FREEZING
FROST
ICE
INSTALLATION
PERMAFROST
SEASONAL VARIATIONS
SOILS
FROZEN SOILS
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA181405
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA181405
Description
Summary:Electrical grounding for temporary and permanent installations in cold regions is complicated by the existence of frozen soil. This is because the electrical resistivity of frozen soil can be several orders of magnitude higher than unfrozen soil, the contact resistance between the grounding electrodes and the soil, which is usually negligible under unfrozen conditions, can become significant if a veneer of ice forms on the electrode, and it is difficult to drive grounding rods and frozen soil. The purpose of this digest is to describe the factors to consider when planning a grounding system for permanent and temporary installations in regions of seasonal frost and permafrost.

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