Results 291 to 300 of about 221,077 (342)

Dielectric strength of transformer insulation

Electrical Engineering, 1937
This paper presents a summary of the results of over 2,000 tests on the dielectric strength of transformer oil and insulating material for impulse, switching, and 60-cycle voltages. From these tests the voltage-time characteristics of the 2 insulations tested may be established over the entire range from a fraction of a microsecond to more than one ...
P. L. Bellaschi, W. L. Teague
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Dielectric strength of mineral oils

Electrical Engineering, 1935
The correlation of the pressure and temperature effects in determining the dielectric strength of mineral insulating oils is considered in this paper. The effect which gas dissolved in the oil has on the dielectric strength of the oil is shown by experimental results of tests on the effect of temperature and pressure.
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Dielectric strength of impregnated pressboard

Electrical Engineering, 1953
THE IMPULSE dielectric strength of pressboard impregnated with insulating liquids is of interest where such insulation has to withstand high transient impulse voltages. A comparison of the impulse dielectric strength of dry pressboard impregnated with a variety of insulating liquids of differing chemical structure has indicated that, in pressboard ...
T. W. Dakin, C. N. Works
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IV. Dielectric strength of polyethylene

Electrical Engineering, 1945
POLYETHYLENE is a particularly interesting material with which to study dielectric strength because of the remarkable uniformity of results obtainable, a characteristic which differentiates it from other dielectrics used for wires and cables. This uniformity, however, exists only if the material is free of mechanical stress.
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Dielectric strength of series - connected vacuum gaps

XXIst International Symposium on Discharges and Electrical Insulation in Vacuum, 2004. Proceedings. ISDEIV., 2005
A simple procedure to obtain an analytical equation for the distribution function of breakdown voltage in devices containing an arbitrary number of identical elements in series is proposed. The obtained results make possible to analyze an influence of static properties of the elements and their number on the dielectric strength of a device as a whole ...
V. Sidorov, D. Alferov, E. Alferova
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Nanolaminates: Increasing Dielectric Breakdown Strength of Composites

ACS Applied Materials & Interfaces, 2012
Processable, low-cost, high-performance hybrid dielectrics are enablers for a vast array of green technologies, including high-temperature electrical insulation and pulsed power capacitors for all-electric transportation vehicles. Maximizing the dielectric breakdown field (E(BD)), in conjunction with minimization of leakage current, directly impacts ...
Scott P, Fillery, Hilmar, Koerner, Lawrence, Drummy, Erik, Dunkerley, Michael F, Durstock, Daniel F, Schmidt, Richard A, Vaia   +6 more
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Dielectric strength and voltage life of polyethylene

Electrical Engineering, 1958
AMONG the most promising types of material for insulating high-voltage cables are those in the polyethylene family. Since its introduction around 1940, polyethylene has been used successfully for submarine telegraph and telephone cable, for high-frequency coaxial communication cable, and for multiconductor control cables.
G. H. Hunt, M. J. Koulopoulos, P. H. Ware   +2 more
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The Apparent Dielectric Strength of Cables

Transactions of the American Institute of Electrical Engineers, 1923
AFTER reading with considerable interest, the two papers presented at the annual convention of the Institute, dealing with the dielectric strength of cables1, the writer analyzed the data presented in each paper from an entirely different viewpoint and also the data given in each paper according to the views of the other paper.
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Epoxy polymers. V. Dielectric strength

Journal of Applied Polymer Science, 1972
This report deals with material properties which determine dielectric strength rather than phenomena that occur during breakdown. We propose that the determining factors are the same for liquids and polymers. We report dielectric strengths calculated from measured breakdown potentials and sample thicknesses for liquids, ionic solutions, and epoxy ...
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Dielectric Strength of Organic Liquids

Nature, 1955
WORK in this laboratory on the conductivity of hexane at high steady fields has shown that measurements can be made at field-strengths far in excess of those previously reported. For gaps of 25 and 150 microns, it was possible to measure the conductivity up to stresses of 1,500 kV./cm. and 1,150 kV./cm. respectively.
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