Results 261 to 270 of about 306,536 (293)

Improved Mesh Grounding Electrode Model by Changing Arrangements of Internal Conductors of the Mesh Grounding Electrode

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2010
Mesh grounding electrodes in Korea and abroad are designed as lattice-shaped equidistance grounding grids. In case of a lattice-shaped grounding Grid, however, there is a problem of higher touch voltage at the corner of the grid relative to the center.
Yong-Sik Shim, Hong-Kyoo Choi, Tae-Hoon Kim, Young-Joo Song   +3 more
openaire   +1 more source

Lightning response of grounding electrodes

2020
A grounding electrode consists of any buried metallic body responsible for dispersing current to the soil. The specific application has significant influence on the electrodes' arrangement and dimension. The arrangement can vary from a simple rod, connected to the transformer of a distribution line, to horizontal electrodes buried about 0.5 m deep in ...
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High Frequency Characteristics of Impedances to Ground And Field Distributions of Ground Electrodes

IEEE Transactions on Power Apparatus and Systems, 1981
High frequency characteristics of impedances to ground and field distributions of ground electrodes are calculated by the current simulation method together with the method of images. Numerical calculations concerning some typical electrodes are shown.
T. Takashima, T. Nakae, R. Ishibashi
openaire   +1 more source

Grounding electrodes and grounding devices. Regulatory requirements

Автоматика, связь, информатика
Одной из основных проблем при проектировании заземляющих устройств (ЗУ) в грунтах с высоким удельным сопротивлением является создание низкоомного заземляющего устройства. В последнее время широкое распространение получили так называемые активные (химические) заземляющие электроды, обеспечивающие искусственное снижение удельного сопротивления грунта в ...
openaire   +1 more source

Calculation of Impulse Grounding Resistance of Extended Grounding Electrode

2013
In order to calculate the impulse grounding resistance of extended grounding electrode accurately, this paper introduces a method for computing the impulse grounding resistance based on the spark discharge characteristic of the earth, using a nonlinear differential circuit model. The relation curves of impulse grounding resistance with the current peak
openaire   +1 more source

Transient Ground Impedances According to Shapes of Grounding Electrodes

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2006
This paper presents the transient behaviors of grounding system impedance against lightning impulse currents. The dynamic characteristics of the deeply driven ground rod and grounding grid subjected to the impulse current were investigated. The transient ground impedance strongly depends on the configuration and size of grounding electrodes and the ...
openaire   +1 more source

Grounding Characteristic Analysis of Plate Electrodes

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2007
In this study, an experiment on the efficient construction method of plate electrodes, the influence of electric potential interference in plate electrodes, and building foundations were explored. The experimental result of the electric potential measurement was taken on the basis of the direction of movement and the condition in which the plate ...
Sung-Sam Kim, Ju-Chan Kim, Hee-Seog Koh
openaire   +1 more source

A message from the ground electrode

Muscle & Nerve, 2016
Lawrence R, Robinson, Michael, Christie, Sanjeev, Nandedkar   +2 more
openaire   +2 more sources

A Method for Grounding Resistance Calculation of the Vertical Grounding Electrode

SSRN Electronic Journal, 2022
Hye yong Kwon, Yong min Kil, Sunghyok Kim   +2 more
openaire   +1 more source

Analysis of Grounding Electrode Input Impedance Calculation

2011
The paper deals with an assessment of transient impedance of the grounding electrode. The mathematical model is based on the thin wire antenna theory and related Pocklington integro- differential equation in the frequency domain, which is numerically treated via Galerkin-Bubnov variant of indirect Boundary Element Method (GB- IBEM).
Poljak, Dragan, Čavka, Damir
openaire   +3 more sources