3. Low-voltage networks

3.1 Different types of energy networks

In connection with the issue of overvoltage control, low-voltage power networks can behave quite differently depending on how potentials are fixed in relation to metallic grounds and earth.

These are known as earth connection diagrams (figure 11 ), or neutral systems.

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Low-voltage networks

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Conclusion

Bibliography

(1) - XEMARD (A.) et al - Étude statistique des surtensions induites dues à la foudre sur les ouvrages de distribution d'énergie et analyse du risque - Cired (1997).
(2) - Norme NF EN 62305-1 - Protection contre la foudre Partie 1 : Principes généraux...

Software tools

JUPITER: lightning risk analysis software in compliance with NF EN 62305-2, SEFTIM, France.

Websites

Lightning Protection Association http://www.apfoudre.fr/

SOS lightning http://seftim.com/?page_id=1405

Standards and norms

Low-voltage arresters – Part 11: Surge arresters connected to low-voltage systems – Requirements and test methods. - NF EN 61643-11 - 05-2014

This standard covers arresters for low-voltage AC networks. Specific versions for DC applications are under development (IEC 61643-31 for arresters for photovoltaic applications and IEC 61643-41 for other DC applications. In Europe, there is already a standard for...

Regulations

ICPE Order: Order of May 11, 2015 amending a series of ministerial orders to take into account the new nomenclature of classified installations for environmental protection coming into force on 1 ^er June 2015 as part of the transposition of directive no. 2012/18/EU of July 4, 2012. This decree imposes lightning risk analyses on certain classified facilities, and depending on the...