Results 251 to 260 of about 306,536 (293)

Corrosion assessment of a ground electrode in contact with ground enhancing compounds

2010 30th International Conference on Lightning Protection (ICLP), 2010
Although a ground enhancing compound of a grounding system main purpose is to discharge electrical current to ground, however, it overlooks the fact that it can suffer chemical degradation due to the contact of the ground electrode with the compound, as the latter is not a chemically inert material.
Galvan, Arturo, DIANA SOTO, M., JOSE MARÍA MALO   +2 more
openaire   +1 more source

Impulse characterization of ground electrodes

2014 International Conference on Lightning Protection (ICLP), 2014
In this paper, an analysis of the experimental results on the impulse behaviour of grounding electrodes is presented. The parameters used for analyzing transient performance are reviewed and differences highlighted based on test data. The analysis is extended to (i) quantify the effect of impulse shape, (ii) quantify the effect of electrode length ...
N. Harid, D. Clark, S. Mousa, H. Griffiths, A. Haddad   +4 more
openaire   +1 more source

Analysis of the Ground Impedance of Ground Grids Combined with the Carbon Ground Electrodes

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2013
This paper deals with the frequency-dependent ground impedance of ground grids combined with the carbon ground electrodes. Ground grids are generally valid for multipurpose grounding systems as well as lightning protection systems. The carbon ground electrodes may be supplementarily used to reduce the high frequency ground impedance and to improve the ...
Bok-Hee Lee, Sang-Hyun Um, You-Ha Kim, Kang-Soo Lee, Byung-Wook Jeon, Jong-Hyuk Choi   +5 more
openaire   +1 more source

Characteristics of Grounding Impedances of Carbon Compound Grounding Electrodes

Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2011
This paper presents characteristics of frequency-dependent grounding impedance and transient grounding impedance for the carbon compound grounding electrode used in the installation of computerized electronic equipment and lightning protection system.
Kang-Soo Lee, Bok-Hee Lee
openaire   +1 more source

Analysis of Grounding Performance of Tower Grounding Electrodes in Elevated Terrain

IEEE Transactions on Power Delivery
Zhanlong Zhang, S Q Bu, Yihua Dan
exaly   +2 more sources

Recognition of electrocardiographic electrode misplacements involving the ground (right leg) electrode

The American Journal of Cardiology, 1993
Abstract Accurate electrocardiographic (ECG) interpretation by computer or manually requires that the electrocardiogram be recorded with all electrodes in proper positions. All possible electrode placement errors involving the active limb electrodes (right and left arm, and left leg) have been described.
W K, Haisty, O, Pahlm, L, Edenbrandt, K, Newman   +3 more
openaire   +2 more sources

Ground-Free ECG Recording with Two Electrodes

IEEE Transactions on Biomedical Engineering, 1980
ECG recordings normally use three electrodes?two for the differential inputs of the ECG amplifier and the third for ground. We analyze those situations where the ground electrode can be eliminated. We propose a model for the source of electrical interference and determine various parameter values.
N V, Thakor, J G, Webster
openaire   +2 more sources

Modelling and design of ground electrodes

2009 International Conference on Power Engineering, Energy and Electrical Drives, 2009
This keynote lecture overviews the modeling techniques for computer simulation of ground electrodes behavior, and discusses the design of tower footing and substation grounding systems. Their performance as regards safety as well outage rate is discussed. A comprehensive bibliographical survey is provided.
openaire   +1 more source

Effects of DC Ground Electrode on Converter Transformers

IEEE Power Engineering Review, 1989
DC transmission systems are normally equipped with a DC ground electrode for emergency or normal operation with or without ground return. In all cases, the DC ground stabilizes the DC voltage. During operation with ground return, a DC ground potential rise occurs at the DC ground electrode and DC voltage is transferred to the station ground.
A.P.S. Meliopoulos, G. Christoforidis
openaire   +1 more source

Suction Cup Ground and Reference Electrodes in Electrodiagnosis

Archives of Physical Medicine and Rehabilitation, 1989
An alternative to the taped-disc surface electrodes typically used during monopolar and concentric needle electromyographic studies has been investigated. The use of suction cup surface electrodes in place of the taped metal disc surface electrodes increases patient and operator safety and enhances patient comfort and operator efficiency. A two-channel
J M, Downey, P V, Belandres, M, Di Benedetto   +2 more
openaire   +2 more sources