Experience has shown that High Voltage gas insulated switchgear can have a useful life considerably longer than initially envisaged when the switchgear was produced. Therefore condition assessment of the switchgear and the correct interpretation of the results have increasingly become more important). The analysis of the SF6 or mixed gas composition is a very common diagnostic method used for gas insulated switchgear (GIS) as well as for any other equipment filled with SF6 or mixed gas (live tank CB, dead tank CB, MTS, instrument transformers, etc.). The results of this work will provide the asset manager with guidance as to the interventions required to ensure the satisfactory performance of AIS, GIS and MTS and hence prevent major failures, minimize planned outages and thus increase network reliability and availability.

More information available in the Working Body Form available on the SC document page (Click on the link).

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