SF6 gas insulated switchgear, high voltage, electrical substation, sulfur hexafluoride, dielectric medium, circuit breaker, gas density monitor, sealed tank, metal-clad design, safety mechanisms, busbar system, disconnect switches, maintenance-free, arc quenching properties, environmental precautions, non-flammable, non-toxic, heavy gas, greenhouse effect, global warming potential, industrial applications, power transmission, high efficiency, reliability, long service life, indoor installation, outdoor installation, corrosion-resistant materials, monitoring equipment, gas leakage detection, pressure relief devices, electrical grid stability, energy sector, high capacity, critical infrastructure, advanced technology, electrical insulation, gas handling procedures, regulatory standards compliance, safety protocols, specialized training, electrical engineering, power distribution, switchgear ratings, thermal stability, chemical stability, colorless, odorless.