Download An Introduction to High-Voltage Experimental Technique: by Dieter Kind PDF

By Dieter Kind

High-voltage expertise is a box of electric engineering the clinical rules of that are primarily present in Physics and which, via its program, is in detail associated with business perform. it truly is considering the actual phenomena and technical difficulties linked to excessive voltages. The homes of gases and plasmas, in addition to liquid and strong insulating fabrics, are of basic importance to high-voltage know-how. even though, regardless of all development, the actual phenomena saw in those media can in simple terms be incompletely defined by way of theoretical remedy, and so scan constitutes the foreground of medical examine during this box. educating and learn in high-voltage expertise therefore depend regularly upon experimental strategies whilst facing difficulties. acceptance of this truth is the conceptual foundation for the current e-book. it really is essentially meant for college students of electric engineering and goals to supply the reader with an important instruments for the experimental method of difficulties in high-voltage know-how. An try out has been made right here to point very important useful difficulties of trying out stations and laboratories, and to indicate strategies. The publication should still consequently additionally end up to be a support to the paintings of the working towards engineer. The theoretical issues are correlated with the experiments of a high-voltage sensible path, that are defined in nice aspect. The therapy assumes as a lot familiarity with the topic as can be anticipated from third yr scholars of electric engineering.

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Additional info for An Introduction to High-Voltage Experimental Technique: Textbook for Electrical Engineers

Sample text

The duration of the voltage impulse which develops across the test object is twice the travelling wave transit time of the charging cable; the peak value depends upon the impedance of the test object and is, at best, equal to Uo. In a different circuit high-voltage capacitors are switched onto a delay cable short-circuited at the end, the effective length of which can easily be varied to obtain impulse voltages of divers durations [Winkelnkemper 1965]. Voltage multiplication too can be temporarily realized using the transmission line type of energy storage device; the setup is in principle so arranged that the potential jumps caused by travelling waves on several lines add up at the test object.

Diverse installations and their working principles are described in the literature [Miirtz 1964; Prinz 1965; Bertele, Mitterauer 1970]. 1) Comprehensive survey in Craggs, Meek 1954; Sirotinski 1956; Friingel1965; Knoepfel1970 and others 46 1 Fundamental Principles of High-Voltage Experimental Techniques b) Inductive Energy Storage The energy stored in a coil of inductance L for a current 10 is given by: _1 2 W -2"LI o. ~ 2/Jo/Jr . Inductive energy storage systems are built with air-cored coils, since the maximum value of B is restricted to about 2 T in magnetic materials by saturation processes.

The alternating current inputs to the individual circuits must be provided at the appropriate high potential; this can be done by means of isolating transformers or by means of individual alternators driven via insulating shafts. + U Fig. E 5 (x) Fig. 5 Electrostatic Generators In electromagnetic generators, current carrying conductors are moved against the electromagnetic forces actinr upon them. In electrostatic generators, movement of electrically charged particles occurs against the electrostatic forces acting upon them.

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