2. Design and sizing parameters
To meet the dielectric, electrical, thermal and mechanical constraints to which substation equipment is subjected in operation, SEM equipment is mainly dimensioned by :
resistance to permanent and temporary stress;
withstand continuous current and short-circuit current (short-term current);
pressure resistance.
2.1 Insulating gas withstands permanent and temporary stresses
A pressurized insulating gas is used to withstand the network's permanent and temporary voltages. Its characteristics determine the overall dimensions of the switchgear.
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Design and sizing parameters
Constraints specific to SEM devices
Bibliography
Articles
International standards and technical reports
- Sectionneurs et sectionneurs de terre à courant alternatif. - CEI 60 129 - 1984
- Spécifications et réception de l'hexafluorure de soufre neuf. - CEI 60 376 - 1971
- Guide relatif au contrôle de l'hexafluorure de soufre (SF6) prélevé sur le matériel électrique. - CEI 60 480 - 1974
- Appareillage sous enveloppe métallique à isolation gazeuse de tension assignée égale ou supérieure...
French regulations
Metal-clad switchgear manufacturers
ABB Energie S.N.C., Établissement de Persan.
ALSTOM Transmission et Distribution SA, Postes Blindés Haute Tension, Aix-les-Bains.
Schneider Electric High Voltage SA, Site B1, Grenoble.
SIEMENS SAS, Division Énergie, Saint-Denis.
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