5. Surge arrester implementation and installation
5.1 Protective distance
In the event of lightning strikes or switching operations, due to the propagation phenomena inherent in transient overvoltages, two points on the same conductor may not be at the same potential. It is therefore illusory to imagine global protection of a network simply by installing a few lightning arresters, for example at certain network nodes.
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The protection offered by a lightning arrester is very local. So it's not enough to know the surge arrester's level of protection to know the surge voltage actually applied to the equipment to be protected.
The lightning arrester's mains and earth connections have a linear inductance of around 1 μH/m, which must be taken into account when calculating...
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Surge arrester implementation and installation
Auxiliary devices and surge arrester accessories
Documentation sources
References
Standards
France
French Standards Association (AFNOR) http://www.boutique.afnor.org
- Surge arresters. 1re part: variable-resistance surge arresters with spark gaps for AC networks (classification index: C 65-100). - NF EN 60099-1 - 08-94
- Parafoudres. Partie 4 : parafoudres à oxyde métallique sans éclateur pour réseaux à courant...
Manufacturers. Suppliers
These lists do not take into account market volumes and are not exhaustive.
HTA ZnO arresters with synthetic enclosure
ABB SA http://www.abb.com
DERVASIL SA http://www.sicame.com
MacLean Power Systems...
Events
CIGRE, International Council on Large Electric Systems, groups B2 (overhead lines) and B3 (substations), general session every 2 years in Paris + specialized symposia organized by the working groups
ISH, International Symposium on High Voltage Engineering, an academic conference held every 2 years, alternating with the CIGRE general session.
SEE, Société des Électriciens et Électroniciens,...
Tools
Software
EMTP-RV, software for modeling the transient behavior of power systems http://www.emtp.com
FLUX2D, 2D finite element code for electrostatic, dielectric and thermal modeling http://www.cedrat-groupe.com
COULOMB: 3D finite-element...
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