volume 4, issue 4, P2090-2094 1989
DOI: 10.1109/61.35634
View full text
Y. Ohshita, A. Hashimoto, Y. Kurosawa

Abstract: Better reliability in gas insulated switchgear is the goal of a diagnostic technique for abnormal conditions at large current conducting contacts. The detection of peculiar vibrations from artificially simulated abnormal contacts during current conducting and their measurement in metal enclosures are shown. Distortion of the voltage waveform across the abnormal contacts is explained by the temperature rise caused by the alternating current change.