Offline Gas-Insulated Switchgear Testing

Compact gas-insulated switchgear (GIS) represent a space-saving alternative to classic air-insulated installations. The low insulation distances are guaranteed by the high dielectric strength of insulating gas, the most common of which is sulfur hexafluoride (SF6). A perfect condition of the GIS is essential for its reliable operation. A GIS malfunction would be a calamity and therefore tests are inevitable to make such an event as unlikely as possible.

Diagnostic Methods

Products for Offline Gas-Insulated Switchgear Testing


Circuit Breaker motion measurement on a B65-145 GIS

Circuit Breaker Testing

Sensitive partial discharge testing on gas-insulated switchgear with UHF 800

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