Title :
Statistical breakdown behavior of N2-SF6 gas mixtures under LI stress
Author :
Graf, R. ; Boeck, W.
Author_Institution :
Inst. of High Voltage Eng. & Power Transmission, Tech. Univ. Munchen, Germany
Abstract :
The statistical scattering of breakdown voltage in pure sulfur hexafluoride (SF6) and mixtures with nitrogen (N2) in case of quasi uniform fields under lightning impulse (LI) stress was investigated under positive polarity in the pressure range between 0.54 MPa for pure SF6 up to 1.42 MPa for the mixture with 1% SF 6 content. The basic requirement for these investigations was to get the same dielectric strength with all N2-SF6 gas mixtures compared to pure SF6. First conclusions concerning the statistical breakdown behavior of N2-SF6 gas mixtures are drawn
Keywords :
nitrogen; 0.54 to 1.42 MPa; N2-SF6; N2-SF6 gas mixtures; breakdown voltage; dielectric strength; lightning impulse stress; quasi uniform fields; statistical breakdown behavior; statistical scattering;
Conference_Titel :
High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)
Conference_Location :
London
Print_ISBN :
0-85296-719-5
DOI :
10.1049/cp:19990708
