What is gas insulated station?

A gas-insulated station (GIS) is an electrical substation that uses gas-insulated technology to house and insulate high-voltage equipment. Instead of traditional air-insulated systems, GIS utilizes sulfur hexafluoride (SF6) gas, which has Excellent insulating properties, allowing for a more compact design. This results in reduced space requirements and enhanced safety, making GIS particularly suitable for urban areas and locations with limited space. Additionally, GIS systems have lower maintenance needs and improved reliability compared to conventional substations.