Breakdown Gradients in SF6-N2, SF6-Air and SF6-CO2 Mixtures

Malik, N. H.; Qureshi, A. H.

doi:10.1109/tei.1980.298335

Cited by 82 publications

(23 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Breakdown data for SF6-N2 is available [11] gives 118.41 kV as the sparking potential of the mix-X ture which agrees very well with that published in the literature [3]. Calculated and measured [3,9,10] sparking potentials for SF6-air and SF6-N2 are compared in Figs. 2 and 3 respectively for different pd values and 21 the agreement between them is good considering that in some cases (Fig.…”

Section: Introductionsupporting

confidence: 77%

“…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: 98%

See 1 more Smart Citation

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.

View full text Add to dashboard Cite

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

show abstract

Section: Introductionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 98%

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.

View full text Add to dashboard Cite

show abstract

“…[44], only the latter data set was used for fitting. The best fits to the data of Malik and Qureshi [45] and Somerville, et al . [44] correspond respectively to the dot-dashed and solid lines in Fig.…”

Section: Ion Mobility Measurementsmentioning

confidence: 91%

“…For both the data of Mailer and Malik and Qureshi [45] the best fits for the highest levels of consistency required use of the attachment cross sections given by Pejcev, et al [34].…”

Section: Ion Mobility Measurementsmentioning

confidence: 99%

Research for electric energy systems - an annual report

Hebner¹

1987

View full text Add to dashboard Cite

“…Quite a few studies [2,3] are available reporting the static breakdown voltages of these gases and gas mixtures in uniform and non-uniform filed conditions for different mixture ratios tested at different pressures. As before, we have analyzed the data of [1][2][3]6] and shown that the NKH formula developed by us earlier [4] can be applied to these gases and their mixtures to predict the breakdown voltages and thus putting the measured data in a handy form so that it is useful to practicing engineers.…”

Section: Introductionmentioning

confidence: 99%