3. Choice of protective devices according to the earth connection diagram
3.1 Determining the earth connection diagram
The grounding diagram depends mainly on the configuration of the site.
IT islands can be created by installing LV/LV transformers, as in the case of medical premises (operating theatres).
SCROLL TO TOP3.1.1 Site with HV/LV transformer
The interconnection of earth connections and all building grounds means that either a TN or an IT diagram is used. Downstream of a public distribution transformer, only the TN diagram is authorized....
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Choice of protective devices according to the earth connection diagram
Low-voltage mobile equipment
Bibliography
Standards and norms
- Technical requirements for electrical power distribution – Technical order of May 17, 2001 illustrated - UTE C 11-001 - 08-01
- High-voltage electrical installations – practical guide – determining conductor cross-sections and selecting protective devices - UTE C 13-205 - 07-94
- Installations électriques à basse tension - UTE C 15-105 - 07-03
- Guide pratique. Sections des conducteurs de protection,...
Regulations
Directive 9/391/EEC of June 12, 1989 on the introduction of measures to encourage improvements in the safety and health of workers.
Directive 89/654/EEC of November 30, 1989, concerning the minimum safety and health requirements for the workplace.
Directive 89/656/EEC of November 30, 1989, on the minimum health and safety requirements for the use by workers of personal protective...
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Organizations – Federations – Associations (non-exhaustive list)
Union technique de l'électricité et de la communication UTE http://www.ute-fr.com
French Standards Association, AFNOR http://www.afnor.fr
At the end of 2017, the merger between...
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