The Role of Wire Size in Negative Electrical Discharge at High Temperature

Negative corona onset and sparkover voltages in air are shown to be affected by temperature, density, and the pipe-to-wire ratio of radii when using concentric cylindrical electrodes. Use of large wires at high temperatures demonstrates that onset of electrical discharge occurs at voltages significa...

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Bibliographic Details
Published in:IEEE transactions on industry and general applications 1969-01, Vol.IGA-5 (1), p.34-39
Main Authors: Shale, C. C., Holden, J. H.
Format: Article
Language:English
Subjects:
Cooling
Corona
Electrodes
Electrostatic precipitators
Gas insulation
Laboratories
Temperature
Voltage
Water
Wire
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Summary:Negative corona onset and sparkover voltages in air are shown to be affected by temperature, density, and the pipe-to-wire ratio of radii when using concentric cylindrical electrodes. Use of large wires at high temperatures demonstrates that onset of electrical discharge occurs at voltages significantly less than those predictable by earlier theory and that sparkover occurs at voltages considerably greater than those anticipated. Theory is presented to account for the results obtained.
ISSN:0018-943X
DOI:10.1109/TIGA.1969.4180985