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Dissipation factor measurements of transformer oil
2012The present methods of ascertaining the probable sludging of transformer oils are laborious. A simple test, comparable to that used in obtaining the dielectric strength, would be of considerable value in reducing test manpower, equipment and expense. Present investigators measure such properties as oxygen absorption, colour change, increase in acidity,
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On the dissipative factor of the Martian interiors
Planetary and Space Science, 1997Abstract An estimate of the dissipative factor Q μ of the interior of Mars for models with liquid and solid cores is the main result of this paper. The secular acceleration of Phobos was used for this purpose. Weighting factors were calculated for the second-order tides, whose convolutions with the model dissipative factor for the Martian ...
V.N. Zharkov, T.V. Gudkova
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A digital meter for measuring dissipation factor
Proceedings of 5th International Conference on Properties and Applications of Dielectric Materials, 2002The usual practice of measurement of the dissipation factor, i.e. tan/spl delta/ uses a schering bridge. This method of determining dissipation factor is however, of low accuracy and has a number of disadvantages. To obtain accurate result, for the true balance, stray capacitance are eliminated by using a Wagner's earthing device which increases the ...
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Drum Sludge Drying Equipment Energy Dissipation Factor Analysis
Applied Mechanics and Materials, 2012Drum sludge drying equipment is used widely both at home and abroad, and the energy consumption is the key factor of measuring sludge drying equipment. Based on the basis of study of drum sludge drying equipment energy consumption, this paper conducts a comprehensive analysis of drum sludge drying equipment energy consumption factor, and points out ...
Xiao Lu Ma, Yong Zhang
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Dissipation Factor Measurement of PILC Insulation at UHF
2012 Third International Conference on Intelligent Systems Modelling and Simulation, 2012In this paper, dissipation factor measurement of Paper Insulated Lead Covered (PILC) cable insulation at ultra high frequency (UHF) is described. The material under test (MUT) is clamped between two copper sheets to form a capacitor, which is connected to the Advantest R3767CG vector network analyzer (VNA) to measure its input impedance at the resonant
Wong Jee Keen Raymond +4 more
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Measurement of dissipation factor in enamelled wires
Proceedings of the 19th Electrical Electronics Insulation Conference,, 1989An experimental evaluation of two different procedures for measuring the cure of enamelled wires is presented. The cure of an enamelled wire can be indirectly evaluated by the measurement of the dissipation factor. The enamelled wire is immersed in a molten metal bath, and the dissipation factor of the insulating layer is measured between the conductor
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A Common Circuit Topology for Measuring Quality Factor and Dissipation Factor
IETE Journal of Education, 2015ABSTRACTHay and Schering Bridges are employed for the measurement of quality factor and dissipation factor, respectively. After the bridge is balanced, the manual calculations involved in determining these factors are eliminated by employing a digital voltage-ratio metre.
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Heat Dissipation Factors for Building-Attached Pv Modules
SSRN Electronic Journal, 2022Michael T.F. Owen +3 more
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