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. > blogs > gis control panel testing gis control panel testing a foolproof control panel testing solution for gis manufacturers and control panel manufacturers introduction gas insulated switchgear (gis) make use of sulphur-hexafluoride (sf ) gas as a dielectric medium for quenching the arc formed during
contact separation. as sf has a strong dielectric strength, the insulation distances can be smaller. in gis, all electrical components of the switchgear, such as, electrical bus bars, electrical isolators or disconnectors, circuit breakers, current transformers, voltage transformers, earth switches,...
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