7. Diagnostic and monitoring methods
7.1 Special features of SEM equipment
The impossibility of verifying the internal state of the equipment, without fairly complex interventions requiring several hours or days out of service, has led to the search for non-intrusive diagnostic methods, or those that are quicker than complete dismantling.
Some can be used as continuous preventive monitoring, while others are more suited to a one-off examination which, depending on their relevance, cost and the user's maintenance policy, can be applied systematically or conditionally.
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Despite all the precautions taken during manufacture and assembly, including dielectric strength tests, defects, either original defects or changes due to the effect of voltage or current,...
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Diagnostic and monitoring methods
Place of SEM substations in electricity transmission networks
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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