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Title: Electrical breakdown of mineral oil under uniform fields
Authors: Ευαγγέλου, Χρήστος Α.
Zaky, A. A.
Nosseir, A.
Megahed, I. Y.
Item type: Journal article
Keywords: Breakdown voltage;Electrodes;Τάση διάσπασης;Ηλεκτρόδια
Subjects: Engineering
Electrical engineering
Ηλεκτρολογική μηχανική
Issue Date: 8-Jan-2015
Date of availability: 8-Jan-2015
Publisher: [χ.ό.]
Abstract: The direct breakdown voltage of degassed and oxygen-saturated oil has been measured as a function of gap length (28-200pm) using different combinations of etched aluminium, anodized aluminium and stainless steel electrodes. Polarity reversal tests revealed the presence of a crossover point in the breakdown characteristics analogous to that obtained for non-uniform field geometries. It is therefore inferred that the breakdown mechanism is initiated at local asperities on one of the electrode surfaces. The shapes of the characteristics were found to be either concave or convex with respect to the gap axis, depending on the material of the electrodes used. A concave shape could lead to a minimum in the average breakdown strength against gap length characteristic.
Language: English
Citation: Zaky, A., Nosseir, A., Megahed, I. and Evangelou, C. (1976). Electrical breakdown of mineral oil under uniform fields. Journal of Physics D: Applied Physics. 10(13). pp. 1761-1766. Available from:
Journal: Journal of Physics D: Applied Physics
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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