Atmospheric factor under the negative impulse voltages on various test gaps
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Publication Details
Author list: Kanchana S., Chotigo S., Pungsiri B.
Publisher: Hindawi
Publication year: 2008
Volume number: 2
Start page: 917
End page: 920
Number of pages: 4
ISBN: 1424421012; 9781424421015
ISSN: 0146-9428
eISSN: 1745-4557
Languages: English-Great Britain (EN-GB)
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Abstract
This paper dealt with the effect of the atmospheric factors on various test gaps under the standard negative impulse voltage, 1.2/50μs. The atmospheric factors in this present work were relative humidity, temperature and the ratio of the absolute humidity to the air density correction factor (h/δ). Gaps used were sphere-sphere, rod-plane and rod-rod gaps. The diameter of the sphere was 12.5 cm and the length of the rod was 20 cm. The dimensions of the plane were 4*4 cm 2 copper, and 70*70 cm 2 steel. The maximum voltage used in this present work was about 230 kV. The results of the breakdown voltage (U 50) as a function of atmospheric factors were plotted. © 2008 IEEE.
Keywords
Flashover, Humidity, Negative impulse voltage
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