Title :
The influence of a conducting particle on a spacer on the insulation properties in SF6/N2 mixtures
Author :
Imano, A. Moukengue ; Schurer, R. ; Feser, K.
Author_Institution :
Inst. of Power Transmission & High Voltage Technol., Stuttgart Univ., Germany
Abstract :
The flashover behaviour of a spacer sample with a conducting particle on the surface was investigated for several SF6/N 2 mixtures with SF6 content up to 30%. LI 1.2/50 μs and AC 50 Hz were used to stress the setup. The gas pressure ranged from 100 to 600 kPa. The particle was 0.25 mm in diameter with a length of 2 to 8.5 mm. The spacer sample was 25 mm in diameter and 45 mm in length and made out of epoxy resin filled with Al2O3 . The results of the investigations show the influence of the particle length and the gas pressure on the flashover voltage for various SF6 contents of the mixtures
Keywords :
SF6 insulation; 0.25 mm; 1.2 mus; 100 to 600 kPa; 2 to 8.5 mm; 25 mm; 4.5 mm; 50 Hz; 50 mus; Al2O3; SF6 content; SF6-N2; SF6/N2 mixtures; conducting particle; epoxy resin; flashover behaviour; flashover voltage; gas pressure; insulation properties; lightning impulse; particle length; spacer;
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:19990742
