Dielectric Strength of N2-He Mixtures and Comparison with N2-SF6 and CO2-SF6 Mixtures

Pelletier,; Gervais,; Mukhedkar,

doi:10.1109/mper.1981.5511778

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1982

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“…Much more information,however, is needed to understand the onset nature of corona and breakdown in SF6 and its mixtures to successfully apply this analysis and the example cited above is just to illustrate this possibility. [5,9,19] shows that Eqs. (3) and (9) It is to be noted [20] that this expression has been obtained from data available for clean and well polished electrode systems and cannot be used as is to predict the voltages for practical gas insulated systems with some degree of electrode roughness.…”

Section: Introductionmentioning

confidence: 99%

Calculation of Sparking Potentials of SF6 and SF6-GAS Mixtures in Uniform and Non-Uniform Electric Fields

Nema

Kulkarni

Husain

1982

IEEE Trans. Elect. Insul.

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A simple formula is developed to predict the sparking potentials of SF6 and SF6-gas mixture in uniform and non-uniform fields.The formula has been shown to be valid over a very wide range from 1 to 1800 kPa-cm of pressure and electrode gap [1-7, 9-13, 17-19] and it would be useful to put this data in a handy form so that it can be used conveniently in practical problems of engineering interest.There is a definite indication from the published data [5][6][7] that the sparking potential of a mixture is related to the sparking potential of pure SF6, but so far no correlation effort has been made. In

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Section: Introductionmentioning

confidence: 99%