Analyse of SF6 Properties in High-Voltage Equipments and its Optimal Utilization with Combination N2

Abstract

The fundamental characteristics and properties of SF6 and its mixtures with N2 and CO2 are given. Current wave-forms of initial stages of negative corona discharge formation in a short negative point-to-plane gap have been measured with nanosecond time resolution in the mixtures N2 + SF6, at the pressures 50 kPa and for various contents of SF6 and overvoltages. Current pulses in this mixture with low concentration of SF6 are described using the streamer-based theory.

Keywords

• pressures
• pulses
• resolution.