Results 201 to 210 of about 4,597,299 (248)
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Electrical Engineering, 1951
INTEREST in extending the hook-on technique to measurement of 3-phase power factor has resulted in the development of a hook-on power factor meter. Prerequisites were light weight, simple operation, and wide range (0 to 1.0 power factor lead and lag, 100 to 600 volts, 15 to 600 amperes).
A. J. Corson, A. L. Nylander
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INTEREST in extending the hook-on technique to measurement of 3-phase power factor has resulted in the development of a hook-on power factor meter. Prerequisites were light weight, simple operation, and wide range (0 to 1.0 power factor lead and lag, 100 to 600 volts, 15 to 600 amperes).
A. J. Corson, A. L. Nylander
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Power, reactive volt-amperes, power factor
Electrical Engineering, 1933The relation between power, reactive volt-amperes, and power factor is discussed for sinusoidal electromotive forces and currents. Reactive volt-amperes is defined as the flow of stored energy into the circuit and is deduced from the stored energy cycle.
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A Standard of Low Power Factor
Transactions of the American Institute of Electrical Engineers, 1933NEED of a suitable standard of low power factor for use in checking the accuracy of the various devices and bridges employed in the measurement of loss in dielectric samples is pointed out in this paper. The relative merits of the different methods that have been proposed for this purpose are discussed and then the low power factor standard which has ...
W. B. Kouwenhoven, L. J. Berberich
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Power Measurements at High Voltages and Low Power Factors
Transactions of the American Institute of Electrical Engineers, 1924A description is given of the apparatus for the measurement of power as low as a fraction of a watt at power factors approaching zero and voltages as high as 175 kv. to neutral. A standard make of portable wattmeter was used having maximum ranges of 1.5 watts, 37.5, 75 and 150 volts and 20 per cent power factor.
Joseph S. Carroll +2 more
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Power Factor in Polyphase Systems
Transactions of the American Institute of Electrical Engineers, 1920THE use of a number of different definitions of “power factor” as applied to unbalance polyphase system has led to much confusion. The present paper points out the mutual relations of a number of possible definitions and their relative merits for specific types of circuits.
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Transactions of the American Institute of Electrical Engineers, 1908
Based on the commonly accepted definition of power-factor, as “The ratio of true power to volt-amperes”, there can be no single factor that will exactly express such a physical relationship in a delta-connected, unsymmetrical, three-phase system.
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Based on the commonly accepted definition of power-factor, as “The ratio of true power to volt-amperes”, there can be no single factor that will exactly express such a physical relationship in a delta-connected, unsymmetrical, three-phase system.
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Power, power factor and power factor correction
2020Mike Tooley, Lloyd Dingle
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The improvement of power factor
Journal of the Institution of Electrical Engineers, 1923The economical limit of power factor improvement in relation to capital outlay. It is shown that if C is the capital cost of generating and transmission plant per kilowatt, and c is the cost of phase-improving plant per wattless kilovolt-ampere; then, writing α = c/C, it is economical (from the capital outlay point of view) to go on improving the power
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Wireless power transfer based on novel physical concepts
Nature Electronics, 2021Mingzhao Song +2 more
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