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Ionization, Attachment and Breakdown in SF6
Nature, 1970SULPHUR hexafluoride is widely used as an insulator in many electrical devices, but little is known of its fundamental electrical properties, particularly at voltages above about 100 kV. As the first part of an investigation on the growth of pre-breakdown ionization in SF6, we have carried out measurements from which values of the apparent primary ...
J, Dutton, F M, Harris, G J, Jones
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[Infrared spectrum analysis of SF6 and SF6 decomposition].
Guang pu xue yu guang pu fen xi = Guang pu, 2015Pressured SF6 gas is widely used in GIS for electrical insulation as well as for are extinction. And a chemical way for detecting the SF6 and its byproducts is a powerful diagnosis method for GIS. The present paper analyzes the decomposition of insulated gas of GIS (mostly SF6) in three cases with infrared spectrometer.
Tao, Cai +3 more
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Chemical Physics Letters, 1995
Abstract The gas-phase clustering reactions of SF 5 − , SF 6 − and F − ions with SF 6 were measured using a high-pressure mass spectrometer. The bond energies of SF 5 − (SF 6 ) 1 and SF 6 − (SF 6 ) 1 were estimated to be ⩽2.3 kcal/mol. The bond energies of F − (SF 6 ) n with n = 1 and 2 were determined to be 5.4 and ≈4.1 kcal/mol ...
Kenzo Hiraoka +5 more
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Abstract The gas-phase clustering reactions of SF 5 − , SF 6 − and F − ions with SF 6 were measured using a high-pressure mass spectrometer. The bond energies of SF 5 − (SF 6 ) 1 and SF 6 − (SF 6 ) 1 were estimated to be ⩽2.3 kcal/mol. The bond energies of F − (SF 6 ) n with n = 1 and 2 were determined to be 5.4 and ≈4.1 kcal/mol ...
Kenzo Hiraoka +5 more
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Transport properties of F− in SF6–Xe, SF6–Ar and SF6–He mixtures
2012no ...
Benhenni, Malika, Yousfi, Mohammed
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Breakdown Strength of N2-SF6 Gas Mixtures Containing 10% and 5% SF6 Compared with pure SF6
2001SF6 as insulating gas has a very good dielectric strength. Therefore, SF6 is used in many applications. Nowadays, it is investigated again whether SF6-N2 mixtures can replace pure SF6 in for example gas-insulated substations and lines. For pure SF6 the optimal gas pressure varies between 4 and 6 bar.
Sander Meijer +2 more
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On the replacement of SF6 by air in internal arc testing of MV SF6 insulated switchgear
IET Conference Publications, 2009Internal arc tests are intended to verify the effectiveness of switchgear design in protecting personnel in case of an internal arc. With the IEC 62271-200 & 201 in 2003, new methods and criteria for testing metal/insulation enclosed switchgear under conditions of an internal arc have been formulated.
Smeets, R.P.P. +7 more
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Vibrational hyperpolarizability of SF6
The Journal of Chemical Physics, 1988Expressions are derived for the vibrational second hyperpolarizability γv of SF6, in the static limit and for the nonlinear-optical processes of the dc Kerr effect, electric-field-induced second harmonic generation (ESHG), and third harmonic generation (THG). These expressions give γv in terms of vibrational transition dipole, polarizability, and first
Shelton David P, Ulivi Lorenzo
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Low SF6 concentration SF6 / N2 Mixtures for GIL
1998Environment concerns have led Electricite de France to consider the use of low-SF6content SF6/N2 mixtures for the development of 400 kV Gas Insulated Line technology dedicated to the underground parts of OHL links.
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Low-lying states of SF6 and SF6?: Electron affinity of SF6 and electron detachment of SF6?
International Journal of Quantum Chemistry, 1993Kent W. Richman, Ajit Banerjee
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A Study of Prebreakdown in SF6
1998This work is a continuation of work presented earlier for nitrogen and dry air1, and deals with a time-resolved study of the prebreakdown phase in SF 6. the goal of this work is to develop and verify discharge models for practical insulating geometries on the basis of physical discharge processes.
Henk H. R. Gaxiola, Joseph M. Wetzer
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