The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
O artigo apresenta o estado do conhecimento sobre processos de erosão térmica em contatos de dispositivos de comutação de baixa tensão para engenharia de energia em correntes de comutação sob condições de curto-circuito. São mostrados os modelos gráficos do arco curto e da distribuição da potência do arco introduzida nos contatos. O método para medições de temperatura de contato durante uma descarga elétrica foi elaborado. São apresentados os resultados dos testes obtidos, ou seja, mudanças na temperatura do contato em função dos parâmetros do arco, como corrente, energia e integral ∫idt. Os testes mostraram que existe um “ponto de ruptura” na curva que expressa a relação entre o aumento da temperatura e os parâmetros do arco na faixa de correntes altas. A localização deste ponto depende do diâmetro dos contatos e do valor da corrente, e está associada à energia térmica entregue aos eletrodos. Observou-se que para cada diâmetro de contatos existe tal valor de uma quantidade energética de arco (corrente, ∫idt, energia), em que os diâmetros das raízes do arco são iguais ao diâmetro de contato. Acima deste valor, a forma de uma curva é alterada. Os resultados obtidos explicam e confirmam a descontinuidade de uma curva que expressa uma erosão do arco de contato em função da corrente, observada anteriormente pelos demais pesquisadores.
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Piotr BORKOWSKI, Makoto HASEGAWA, "Arc Erosion of Polarised Contacts Ag-W by High Current" in IEICE TRANSACTIONS on Electronics,
vol. E93-C, no. 9, pp. 1416-1423, September 2010, doi: 10.1587/transele.E93.C.1416.
Abstract: The paper presents the state of knowledge about thermal-erosion processes in contacts of low-voltage switching devices for power engineering on switching currents under short-circuit conditions. The graphical models of the short arc and the distribution of arc power introduced into contacts are shown. The method for measurements of a contact temperature during an electric discharge has been elaborated. The obtained test results are presented, i.e. changes of a contact temperature as a function of arc parameters such as current, energy, and integral ∫idt. The tests have shown that a "break point" exists on the curve expressing the relationship between a temperature rise and arc parameters in the range of high currents. The location of this point is dependent on a diameter of contacts and a value of current, and is associated with thermal energy delivered to electrodes. It has been observed that for each diameter of contacts there exists such value of an energetic quantity of arc (current, ∫idt, energy), at which diameters of arc roots are the same as a contact diameter. Above this value, the shape of a curve is changed. The obtained results explain and confirm the discontinuity of a curve expressing a contact arc erosion as a function of current, which was observed earlier by the other research workers.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E93.C.1416/_p
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@ARTICLE{e93-c_9_1416,
author={Piotr BORKOWSKI, Makoto HASEGAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Arc Erosion of Polarised Contacts Ag-W by High Current},
year={2010},
volume={E93-C},
number={9},
pages={1416-1423},
abstract={The paper presents the state of knowledge about thermal-erosion processes in contacts of low-voltage switching devices for power engineering on switching currents under short-circuit conditions. The graphical models of the short arc and the distribution of arc power introduced into contacts are shown. The method for measurements of a contact temperature during an electric discharge has been elaborated. The obtained test results are presented, i.e. changes of a contact temperature as a function of arc parameters such as current, energy, and integral ∫idt. The tests have shown that a "break point" exists on the curve expressing the relationship between a temperature rise and arc parameters in the range of high currents. The location of this point is dependent on a diameter of contacts and a value of current, and is associated with thermal energy delivered to electrodes. It has been observed that for each diameter of contacts there exists such value of an energetic quantity of arc (current, ∫idt, energy), at which diameters of arc roots are the same as a contact diameter. Above this value, the shape of a curve is changed. The obtained results explain and confirm the discontinuity of a curve expressing a contact arc erosion as a function of current, which was observed earlier by the other research workers.},
keywords={},
doi={10.1587/transele.E93.C.1416},
ISSN={1745-1353},
month={September},}
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TY - JOUR
TI - Arc Erosion of Polarised Contacts Ag-W by High Current
T2 - IEICE TRANSACTIONS on Electronics
SP - 1416
EP - 1423
AU - Piotr BORKOWSKI
AU - Makoto HASEGAWA
PY - 2010
DO - 10.1587/transele.E93.C.1416
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E93-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2010
AB - The paper presents the state of knowledge about thermal-erosion processes in contacts of low-voltage switching devices for power engineering on switching currents under short-circuit conditions. The graphical models of the short arc and the distribution of arc power introduced into contacts are shown. The method for measurements of a contact temperature during an electric discharge has been elaborated. The obtained test results are presented, i.e. changes of a contact temperature as a function of arc parameters such as current, energy, and integral ∫idt. The tests have shown that a "break point" exists on the curve expressing the relationship between a temperature rise and arc parameters in the range of high currents. The location of this point is dependent on a diameter of contacts and a value of current, and is associated with thermal energy delivered to electrodes. It has been observed that for each diameter of contacts there exists such value of an energetic quantity of arc (current, ∫idt, energy), at which diameters of arc roots are the same as a contact diameter. Above this value, the shape of a curve is changed. The obtained results explain and confirm the discontinuity of a curve expressing a contact arc erosion as a function of current, which was observed earlier by the other research workers.
ER -