Results 211 to 220 of about 18,181 (263)

Calculable impulse voltage calibrator for calibration of impulse digitizers

Conference Digest Conference on Precision Electromagnetic Measurements, 2003
Design and construction of a calibrator for lightning and switching impulse voltage measuring instruments is presented. The operating voltage range is from 50 mV to 300 V. The estimated uncertainty for the peak value is 0,03% and for front time and time to half value less than 1%.
Hällström, J., Chekurov, Y., Aro, Martti M.   +2 more
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Shaping Circuits for High Voltage Impulses

IEEE Transactions on Power Apparatus and Systems, 1971
The calculation of the resistance values necessary to generate a particular double exponential impulse shape or the calculation of the two time constants from the resistance and capacitance values is a difficult and time consuming problem if done rigorously.
Creed, F. C., Collins, M. M.C.
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Lightning Impulse Voltage Evaluation

2017
This research studied and developed software for lightning impulse voltage parameters evaluation. Full lightning impulse voltage of 9 cases in TDG program had been used as references for software tested. This software created 2 types of voltage waveform which are mean curve and approximate real curve. Kalman Filter had been used for mean curve.
Nopphadon Khodpun, Krisada Vilailak
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Impulse voltages chopped on front

Electrical Engineering, 1936
Problems arising from testing with impulse voltages chopped on the rising fronts of the waves are discussed in this paper. A consideration of the generation and measurement of impulse voltages is presented briefly, and the problems are studied sented briefly, and the problems are studied in a discussion of the test results.
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The Production of Impulse Test Voltages

Transactions of the American Institute of Electrical Engineers, 1935
In performing surge tests on electrical power apparatus to determine ability to withstanding lightning or switching surges, the shape of the impulse voltage wave should be approximately the same as 1 of the 3 test wave shapes commonly in use. Methods of producing a wave shape having the prescribed time constants are described in this paper, and ...
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High Voltage Impulse System

Review of Scientific Instruments, 1966
An alternative to the Marx circuit for the production of high voltage, high current pulses is developed. It employs a water-immersed spiral-wound stepup transformer to go from a capacitor bank charged to 100 kV to an output of 1 MV. A method for using such a transformer to pulse charge a second capacitor bank efficiently without very tight coupling is ...
David Finkelstein, Philip Goldberg, Joshua Shuchatowitz   +2 more
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Standardization of impulse-voltage testing

Journal of the Institution of Electrical Engineers, 1936
Following a brief resume of available information on the wave-shapes of surges on transmission lines, the wave-shapes of impulse voltages generated in the laboratory are denned and recommendations are made for the standardization of wave-shapes in order to facilitate the comparison of results obtained in different laboratories.
T.E. Allibone, F.R. Perry
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Impulse Voltages in Windings

1934
An outline of the technique of making impulse voltage measurements by cathode ray oscillograph is given. Circuits for operating, timing and synchronizing of oscillograph and impulse generator are discussed. Certain details of the technique of operating an oscillograph and of impulse testing are also mentioned. The results of experimental determination
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A Study on Generation of Impulse High Voltage

SSRN Electronic Journal, 2020
Impulse voltages have high voltage and high frequency of short duration. Marx generator is used for the generation of the impulse high voltages. Over these years there have been various modifications in the Marx generator with the aim to make it more compact and efficient.
Saloni Tapan, Rajiv Kumar, Abhishek Bhargav, Lavkush Gupta, Atma Ram Gupta   +4 more
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Some recent developments in impulse-voltage testing

Electrical Engineering, 1940
Impulse-voltage testing of electrical apparatus and circuits is a steadily growing practice and constant attention is therefore being given to improvements in testing methods. Accordingly, as progress is made it is necessary to describe recent changes.
C. M. Foust, N. Rohats
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