Sulphur hexafluoride (SF6) was discovered by French chemists Henri Moissan and Paul Lebeau in 1901. They synthesized SF6 by reacting sulphur with fluorine gas. SF6 has excellent electrical insulating and arc-quenching properties, making it widely used in electrical transmission and distribution equipment such as circuit breakers, switchgear, and transformers.
SF6 is commonly used as an electrical insulator in high-voltage applications due to its high dielectric strength. It effectively prevents electrical discharges and arcing, which helps maintain the integrity and safety of electrical equipment. Its high density also allows for compact designs of electrical devices.
Additionally, SF6 is known for its exceptional thermal conductivity and chemical stability, which further contribute to its suitability in high-voltage applications. It remains stable and does not decompose under normal operating conditions, ensuring long-term performance and reliability of electrical equipment.