IEEE 81 : 2012
IEEE 81 : 2012
GUIDE FOR MEASURING EARTH RESISTIVITY, GROUND IMPEDANCE, AND EARTH SURFACE POTENTIALS OF A GROUND SYSTEM
Institute of Electrical & Electronics Engineers
Table of Contents
1. Overview
2. Normative references
3. Definitions
4. Test objectives
5. Safety precautions while making ground tests
6. General considerations on the problems related to
measurement
7. Earth resistivity
8. Ground impedance
9. Testing earth potentials and step and touch voltages
10. Integrity of grounding systems
11. Current splits
12. Transient impedance of grounding system
Annex A (informative) - Nonuniform soils
Annex B (informative) - Determination of an earth model
Annex C (informative) - Theory of the fall-of-potential
method
Annex D (informative) - Surface material resistivity
Annex E (informative) - Instrumentation
Annex F (informative) - Bibliography
Abstract
Provides practical instrumentation methods that may be used for measuring soil resistivity, the impedance to remote earth, step and touch voltages, and current distributions in ground grids associated with electric utility facilities.
General Product Information
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
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