4. Measuring earth resistances
4.1 Different aspects of earth resistance measurements
4.1.1 Definitions and basic methods
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Definition
The floor is an equipotential conductor in the absence of current flow.
The equipotential safety network of an installation is connected to it by means of an earth connection or an earth network. When a current I flows through this earth connection due to a fault in the distribution network or an atmospheric discharge, a voltage U is generated...
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Measuring earth resistances
Bibliography
References
Standardization
French standards (NF) AFNOR (Association française de normalisation)
- Installations électriques à basse tension. - NF C 15-100 - déc. 2002
- Travaux sous tension. Détecteurs de tension. Partie 5 : systèmes détecteurs de tension (VDS). Indice de classement C 18-310. - NF EN 61243-5 - juin 2002
- Degrés de protection...
Manufacturers
Chauvin-Arnoux http://www.chauvin-arnoux.com
French instrumentation http://www.distrame.fr
LEM (Experts in Measuring Electricity) http://www.lem.com
...
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