Results 191 to 200 of about 6,119 (211)

Critical flashover voltage of fiberglass distribution line pole

Proceedings of the 6th International Conference on Properties and Applications of Dielectric Materials (Cat. No.00CH36347), 2002
This paper presents the results of a study of the critical flashover (CFO) voltage of a single fiberglass distribution line pole and its combination with polymer and porcelain insulators. Special attention was made to evaluate the added CFO by the fiberglass distribution pole to the insulators as a second component in the distribution line pole ...
S. Grzybowski, X. Li, E.C. Mullinax
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Experiment of laser-triggered flashover in pulsed voltage

2009 IEEE Pulsed Power Conference, 2009
With the aim of studying the characteristics of laser-triggered surface flashover in pulsed voltage, synchronization problem of laser pulse and voltage pulse is solved through a high precision trigger system. The experimental platform of laser-triggered surface flashover in pulsed voltage is built up in the laboratory.
null Pan Ru-zheng, null Wang Jue, null Ouyang Wen-min, null Yan Ping, null Sun Guang-sheng, null Sun Lian-hua, null Xu Rong, null Li Min-tang   +7 more
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Composite Material’s Flashover Voltage Estimation Experimentally/Numerically

2019 21st International Middle East Power Systems Conference (MEPCON), 2019
Epoxy resins are electrical insulation composite materials used in electrical industrial applications due to the their excellent electrical insulation properties and ability to protect the electrical components from environmental condition. The aim of this paper is to estimate flashover voltage of the epoxy resins under medium to high voltages in ...
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Insulator surface conduction state and surface flashover voltage

Proceedings of 1995 Conference on Electrical Insulation and Dielectric Phenomena, 2002
The withstand of aged and or contaminated insulators has to be tested in a humid environment under controlled conditions. However, during the humidification the conduction state of the aged and/or contaminated insulators shows a temporal variation.
A.E. Vlastos, J. Hulten
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Flashover Voltage Characteristics of Segmented Diverter Strips

SAE Technical Paper Series, 1999
<div class="section abstract"><div class="htmlview paragraph">The flashover voltage characteristics of different types of segmented diverter strips were determined. Especially the resistive layer on the rear side of the strip, which protect the strip from electrostatic discharges, has a major influence on the flashover characteristics.
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Using Corrected Criteria to Model Flashover Voltage of Polluted Insulators

2006 IEEE International Power and Energy Conference, 2006
In this paper, a dynamic model to calculate the flashover voltage of polluted insulators is presented. This paper focuses mainly on two points: The criterion of arc propagation and the arc length in which the flashover occurs. For first point, the typical criteria of arc propagation are not regarded but also the main criterion of arc propagation is ...
Iman Ziari, Ahmad Gholami, Alireza Jalilian   +2 more
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Flashover voltage of high-voltage insulators with uniform surface-pollution films

Proceedings of the Institution of Electrical Engineers, 1969
Contamination on the surface of high-voltage outdoor insulators can lead to the formation of quasistable gas discharges, which burn in series with the resistive contaminative film. Under certain conditions, these discharges may grow to cause a complete flashover. In this paper, a model for the case of a discharge burning on a rectangular polluted strip
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Insulator flashover in SF6 under impulse voltage conditions

IEE Proceedings A Science, Measurement and Technology, 1991
The paper describes a study of the impulse-flashover characteristics of insulating spacers in an SF6-gas environment. Measurements have been made using 0.15/20 μs and 0.15/1500 μ/s waveforms for:(a) plain cylindrical spacers(b) spacers with a defect at the insulator/gas/electrode triple junction(c) spacers with metal inserts which shift the maximum ...
I. Al-Bawy, O. Farish
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Prediction of flashover voltage based on leakage current under AC operating voltage

2010 International Conference on High Voltage Engineering and Application, 2010
In this paper, a model to predict the AC flashover voltage of contaminated suspension insulators was presented. The prediction method is based on the maximum leakage current under AC operating voltage. Three kinds of widely used suspension insulators were tested in various contamination statuses such as pollution layers with different ESDD, different ...
Hongwei Mei, Liming Wang, Yingke Mao, Zhicheng Guan   +3 more
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Calculation of flashover voltage of polluted insulators under DC and AC voltages

Proceedings., Second International Conference on Properties and Applications of Dielectric Materials, 2003
The flashover processes of polluted insulators under both DC and AC voltages were observed with a high-speed camera. Physical and mathematical models to describe the DC and AC flashover are proposed. A formula expressing the resistance of the remainder pollution layer of a polluted insulator is derived.
Z. Guan, R. Zhang
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