Results 171 to 180 of about 16,135 (207)

The current-loading capacity of earth electrodes

Journal of the Institution of Electrical Engineers, 1935
The limits of current-loading capacity of earth electrodes are considered under the three types of conditions which may occur in practice, namely long-duration loading, which occurs where the earth current is insufficiently large to interrupt the supply; short-duration overloading, which occurs when the protective gear operates in the usual way; and ...
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Lightning: earthing electrodes harmonic response

11th International Symposium on High-Voltage Engineering (ISH 99), 1999
The grounding behavior (resistive, capacitive, inductive) to a lightning discharge is related to the electrodes' geometrical dimensions, shapes and the soil characteristics (resistivity /spl rho/, permittivity /spl epsi/, permeability /spl mu/). The border between the capacitive and inductive behaviors corresponds to a frequency value (critical ...
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Materials for electrodes based on rare earth manganites

Solid State Ionics, 1994
Abstract For application in high temperature fuel cells and oxygen sensors, alkaline earth doped lanthanoide manganites have been studied systematically with regard to preparation conditions, structures, electrical conductivities and thermal expansion coefficients, respectively.
P SHUK, L TICHONOVA, U GUTH
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Lightning current distributions in a vertical earthing electrode

Mediterranean Conference on Power Generation, Transmission, Distribution and Energy Conversion (MedPower 2016), 2016
This paper presents a model for calculating current distribution in a vertical electrode and to the surrounding ground resulted by lightning. The model is based on electromagnetic field theory for calculating the response of the step wave-pair model. The physical parameters of the electrode such as the radius and length of the electrode is considered ...
Y. Beck, A. Braunstein
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Earth-electrode systems for large electric stations

Proceedings of the IEE Part A: Power Engineering, 1957
Interconnected systems have increased considerably in recent years, and the large possible earth-fault currents resulting require further thought being given to earth system design, especially in areas of high soil resistivity. The paper discusses the special practical problems of the design, construction and testing of earth electrode systems for ...
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Design of UHVDC earth electrode

2014 International Conference on Power System Technology, 2014
null Yuan Shichao, null Gong Xiangyang, null Luo Yi   +2 more
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Grounding resistance of a single earthing electrode

Modern Problems of Telecommunications - 2024. Proceedings of Russian Scientific and Technical Conference
On traditional (copper) and fiber-optic communication lines, grounding is installed to protect the lives of workers and subscribers, as well as equipment and communication cables. For better protection, the grounding resistance should be low. Therefore, grounding is performed by a multi-electrode circuit of parallel connected single earth electrodes ...
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Optimal Safety Earthing – Earth Electrode Sizing Using A Deterministic Approach

Journal of the Nigerian Association of Mathematical Physics, 2013
In this paper a deterministic approach in the sizing of earth electrode using the permissible touch voltage criteria is presented. The deterministic approach is effectively applied in the sizing of the length of earth rod required for the safe earthing of residential and facility buildings.
Ubeku, EU, Ogbeide, OK
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Two-Phase Rare-Earth Alloys as Reference Electrodes in Molten Chlorides for Reliable Electrochemical Measurements

Minerals, Metals and Materials Series, 2022
Nathan D Smith, Stephanie Castro Baldivieso, Timothy Lichtenstein   +2 more
exaly  

Grounding/earthing electrode studies. I

Proceedings of Industrial and Commercial Power Systems Conference, 2002
T. Lindsey, D.W. Zipse, T.J.K. Krob
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