Title :
Dielectric strength of SF6, SF6/N2 and SF6/CO2 under different electrode surface conditions
Author :
Qiu, Y. ; Xiao, F.L.
Author_Institution :
Xi´´an Jiaotong Univ., China
Abstract :
The effect of electrode surface roughness formed in the machining process can be predicted for SF6, SF6/N2 and SF6/CO2 by computations using a multi-ridge surface roughness model. The breakdown strength of SF6 gas remains higher than that of the SF6 /N2 and SF6/CO2 mixtures (50/50) even when PR is as great as 40 kPa·mm. Only in the case of having a single large protrusion can the breakdown strength of the SF6 /CO2 mixture be slightly higher than that of SF6 gas
Keywords :
carbon compounds; dielectric properties of gases; electric breakdown of gases; electric strength; gas mixtures; gaseous insulation; nitrogen; sulphur compounds; SF6; SF6-CO2; SF6-N2; breakdown strength; dielectric strength; electrode surface roughness; gas mixtures; gaseous insulation; multi-ridge surface roughness model;
Conference_Titel :
Dielectric Materials, Measurements and Applications, 1992., Sixth International Conference on
Conference_Location :
Manchester
Print_ISBN :
0-85296-551-6
