Abstract:
The paper studies discharge plasma interaction with anode rods of a six-gap vacuum switch resulting in surface melting of copper anode rods and metal droplet formation fr...Show MoreMetadata
Abstract:
The paper studies discharge plasma interaction with anode rods of a six-gap vacuum switch resulting in surface melting of copper anode rods and metal droplet formation from electrode material. Using high-speed photography, anode spots formation was recorded and spot dimensions were determined at various discharge currents from /spl sim/30 kA up to /spl sim/100 kA. There is presented a one-dimensional nonstationary model of surface anode melting and droplet formation in an anode spot of vacuum arc. Observations of erosion traces at anodes of operative multigap vacuum switches and high-speed photos of discharge in model switches show, that the model of melting and droplet formation by ponderomotive action of discharge current is correct.
Published in: Proceedings ISDEIV. 19th International Symposium on Discharges and Electrical Insulation in Vacuum (Cat. No.00CH37041)
Date of Conference: 18-22 September 2000
Date Added to IEEE Xplore: 06 August 2002
Print ISBN:0-7803-5791-4
