Journal ArticleDOI
Gaseous Insulation for High-Voltage Apparatus
G. Camilli,J. J. Chapman +1 more
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In this paper, a group of halogenated gaseous compounds have been investigated to determine their impulse (1?x40-microsecond wave) and 60-cycle strength in uniform and non-uniform fields at pressures of 1,2, and 3 atmospheres.Abstract:
A group of halogenated gaseous compounds have been investigated to determine their impulse (1?x40-microsecond wave) and 60-cycle strength in uniform and nonuniform fields at pressures of 1,2, and 3 atmospheres. The scope of this investigation was confined to bare electrodes, and additional testing will be required to determine the behavior of these gases with various types of solid insulation. It has been found that sulphur hexafluoride (SF6) possesses superior insulating properties for high-voltage apparatus, even at these relatively low pressures. Data obtained in an approximately uniform field indicate that at 30 pounds gauge. pressure this gas approaches the impulse strength of oil. Therefore, certain classes of high-voltage apparatus advantageously may use this gas for their insulation, if other properties are adequate.read more
Citations
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Journal ArticleDOI
A simulation of Pd-doped SWCNTs used to detect SF6 decomposition components under partial discharge
TL;DR: In this article, the authors investigated a sensor for detecting the five gas components of SF6 decomposition using Pd-doped zigzag (8, 0) single-wall carbon nanotubes (Pd-SWCNTs).
Journal ArticleDOI
Gaseous insulation for high-voltage transformers
TL;DR: SULFUR HEXAFLUORIDE in high-voltage apparatus fulfills these requirements of a gaseous dielectric: 1. temperature of condensation should be equal to or lower than that at which the apparatus is operated; 2. gas itself and its products of decomposition should not be toxic or of readily controllable toxicity; 3. the gas should be chemically inert and thermally stable; 4. it should have a high heat transfer coefficient as mentioned in this paper.
Journal ArticleDOI
Research status of replacement gases for SF6 in power industry
Shuangshuang Tian,Xiaoxing Zhang,Yann Cressault,Juntai Hu,Bo Wang,Song Xiao,Yi Li,Narjisse Kabbaj +7 more
TL;DR: In this paper, the current status and existing problems of SF6 are summarized, and the future development trend of alternative gas for SF6 in the electrical industry is proposed, as well as the existing research results of the natural gas, SF6 mixed gas, perfluorocarbons, and CnFmX gas are summarized.
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An Investigation of the Arc-Quenching Behavior of Sulfur Hexafloride [includes discussion]
TL;DR: Sulfur hexafluoride, a stable gas which is markedly superior to air in dielectric strength, is shown to be superior to an even higher degree as an arc-quenching atmosphere as mentioned in this paper.
Journal ArticleDOI
Dielectric withstand and breaking capacity of SF/sub 6/ circuit breakers at low temperatures
TL;DR: In this paper, the influence of low temperatures on the dielectric withstand and the breaking capacity of a puffer-type SF/sub 6/ circuit breaker was studied and the results indicated that the decrease in performance at lower temperatures is related not only to the gas density but also, and principally, to the real pressure of the gas in the interruption chamber, which would take account of both the gas temperature and its density.
References
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Journal ArticleDOI
Breakdown Studies in Compressed Gases
TL;DR: In this article, the superior dielectric strength of compressed gases, their low dielectrics loss, low-dielectric constant, low cost, and the fact that they are self-healing make them very promising insulating media.
Journal ArticleDOI
The electric strength of air at high pressure - II
H. H. Skilling,W. C. Brenner +1 more
TL;DR: In this paper, the electric strength of air at pressures up to 21 atmospheres was investigated, and the results obtained with spherical electrodes may be applied with reasonable accuracy to any spark gap in which the electric field is substantially uniform.
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High-Pressure Gas as a Dielectric
TL;DR: In this article, the breakdown strength of sphere gaps, rod gaps, and of samples built up of solid and fluid dielectrics is reported. But the results were made in nitrogen up to 200 pounds per square inch (PSI) and in Freon up to 70 PSI.