Fig. 1. Structure of multi-gap gas switch with corona needles for voltage balance

Fig. 2. Test circuit of single gap corona discharge characteristics

Fig. 3. Test circuit of multi-gap gas switch self-breakdown characteristics

Fig. 4. Corona discharge characteristics of single gap under different needle size不同针尺寸下单间隙电晕特性

Fig. 5. Corona discharge characteristics of single gap under different pressure in air and CO₂空气和CO₂中不同气压下单间隙电晕特性

Fig. 6. Corona discharge characteristics of single gap under different pressure in N₂N₂中不同气压下单间隙电晕特性

Fig. 7. Corona discharge characteristics of single gap under different pressure in SF₆/N₂ and C₄F₇N/N₂SF₆/N₂与C₄F₇N/N₂中不同气压下单间隙电晕特性

Fig. 8. Distribution of breakdown voltage of different pressures in different gas media

Fig. 9. Distribution of breakdown voltage of different pressures in mixtures of different mixed concentration