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2013-7-11 · VFTO in an SF6-N2 medium. In the present study, experimental measurements of VFTO peak magnitudes and temporal characteristics have been carried out in SF6, N2 and SF6-N2 mixtures (at lower percentages of SF6). EXPERIMENTAL TECHNIQUE Experiments for measurements of VFTO were carried out using a 145kV model GIS bus duct of Siemens,

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This paper describes flashover voltage characteristics of CO2/N2/SF6 gas mixtures under uniform field, focusing on whether or not the flashover voltage can be increased by adding CO2 into N2/SF6

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Inception corona discharge voltages in SF6-N2 gas …

2016-1-30 · Figure 4. Corona inception voltage as a function of the gas pressure for different concentrations of SF6 in SF6-N2 gas mixtures and for negative and positive polarities Figure 5, curves of the pressure as a function of the percentage of SF6 for the same onset voltage (13.8 kV).

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SF6 Gas Recovery from SF6 / N2 Mixtures Using Polymer . SF6 gas recovery is considered one of the most important issues when we utilize a gas mixture at a low SF6 content in gas insulation1). One of the

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2018-6-7 · A major uncertainty for all of the refrigerants is the influence of lubricants on properties. The wong fluid in most systems is actually a mixture of the refrigerant and the lubricant carried over from the compressor(s). Research on refrigerant-lubricant mixtures is continuing.

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2018-5-30 · The laboratory is also equipped with QC tools and equipments, and radioisotopes are procured when training events are held. About 2-3 specialized courses are held every year for medical physicists at the IAEA gamma camera laboratory.

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LIN Xin,LI Xintao,LI Luwei.Research Progress of Environmentally Friendly SF6 Substitute Medium in Electrical Equipments[J] The effects of SF6/N2 mixtures upon the

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2019-4-6 · Once detected, the “filtering” respiratory protection equipments make it possible to be protected against it. The half-masks or gas masks with a type B cartridge offer the currently best protection against this volatile organic compound. A complete gas mask, which protects the eyes, whould be prefered to prevent any eye irritation. Thomas

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The OPC-N2 measures particles from 0.38 micron to 17 micron diameter accurately, repeatedly, and with minimal maintenance using the patented pump-less design. A proven technology, the OPC-N2 provides both PM readings and real time particle size histograms, competing in performance with existing analytical units but at a fraction of the cost.

of VFTO Generated in a GIS with SF6-N2 Gas Mixture as …

2013-7-11 · is to use other gases or gas mixtures containing SF6 instead of pure SF,. SF6-N2 mixtures are the most thoroughly investigated among all known gas mixtures. Based on the research conducted worldwide, the optimum composition of SF6-N2 mixture for practical appliions is considered to be 40%SFa - 60%N2 mixture [5].