Gas-insulated substations (GIS) represent a pivotal advancement in electrical power distribution technology, offering a compact and highly reliable solution for housing critical components of an electric grid. Within these substations, high-voltage equipment like circuit breakers, transformers, and disconnectors are encapsulated within sealed metal containers, typically filled with sulfur hexafluoride (SF6) gas. This design not only minimizes the physical footprint, making GIS ideal for urban or space-constrained locations, but also provides exceptional insulation properties that enhance the substation’s efficiency and safety. The hermetic sealing of GIS prevents environmental contamination and reduces maintenance requirements, making it a vital asset in ensuring a resilient and sustainable electrical infrastructure.