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Mechanism of voltage rise of high‐current arc at atmospheric pressure due to deion plates
Author(s) -
Nakayama Kazuo,
Yokomizu Yasunobu,
Matsumura Toshiro,
Kanamori Eiji,
Kuwamura Kazuo
Publication year - 2003
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.10213
Subject(s) - arc (geometry) , voltage , pre charge , electrode , electrical engineering , materials science , circuit breaker , electric arc , current (fluid) , mechanics , engineering , voltage source , chemistry , mechanical engineering , physics , voltage optimisation
A molded‐case circuit breaker has deion plates to raise an arc voltage. To understand the phenomenon of a rise in an arc voltage due to deion plates, an arc current, arc voltage, and voltages between the deion plates were measured for high‐current air arc. The peak value of the arc voltage rose with a decrease in distance between the deion plates and electrodes. This rise resulted from the voltages between the deion plates. The voltage between the deion plates was found to consist of two voltages: (1) an arc‐column voltage and (2) the voltage occurring between the arc column and the surface of the deion plates. These voltages (1) and (2) proved to be 2.3 V/mm and 25 V, respectively. On the basis of these results, the expression of the arc voltage affected by the arrangement of the deion plates was derived to be a function of current. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 145(3): 17–24, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10213