6. Auxiliary devices and surge arrester accessories
The accessories in question are common to silicon carbide and spark gap arresters and zinc oxide arresters.
6.1 Pressure relief valves
The failure of an arrester containing a volume of air always results in an arc bypassing the active part inside the sealed enclosure. Without special precautions, this internal arc would inevitably lead to the surge arrester exploding. For several years now, manufacturers have been developing devices to prevent explosion: these include diaphragms that tear or valves that deform as soon as the pressure reaches a few bar.
These systems expel the gases created by the internal arc and transfer the arc from inside to outside the enclosure. They act very quickly (within a few milliseconds), preventing the surge...
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Auxiliary devices and surge arrester accessories
Choice of surge arresters
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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