Question

Why is SF₆ used as a gaseous insulator in high voltage generators?

Answer 1

1. SF₆ (Sulphur hexafluoride) is an excellent gaseous insulator due to its high dielectric strength.
2. It is chemically inert and thermally stable, meaning it does not react easily or break down at high voltages.
3. SF₆ does not get easily hydrolyzed or decomposed, ensuring safety and longevity in electrical systems.
4. It is an odorless, colorless gas, making it practical for use in high-voltage generators and switchgears.
5. The octahedral structure of SF₆ contributes to its stability and insulating properties.