The concept of GIS and the importance of periodic partial discharge detection
1.1 The concept of GIS Sulfur hexafluoride enclosed combined electrical appliance, internationally called "gas insulated switchgear" (GaslnsulatedSwitchgear) for short GIS, organically combines primary equipment other than transformers in a substation, including circuit breakers, isolating switches, grounding switches, voltage transformers, current transformers, lightning arresters, bus bars, cable terminals, incoming and outgoing bushings, etc. into a whole through optimized design. 1.2GIS Features 1 Miniaturization: Due to the use of sulfur hexafluoride gas with excellent insulation performance as insulation and arc extinguishing medium, the substation can be greatly reduced.
