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
A aderência é uma das características dominantes de confiabilidade em relés para cargas de média corrente de vários amperes a várias dezenas de amperes, que são usados para relés de automóveis, unidades de controle industriais ou fontes de alimentação de eletrodomésticos. As correlações entre as falhas de liberação devido a características de travamento e contato, como descargas de arco, parâmetros de materiais e fatores de projeto em relés, nunca foram sempre esclarecidas. Isto dificulta o desenvolvimento razoável de materiais de contato e o projeto racional de relés. Assim, a dependência das condições de carga elétrica nas características de aderência é investigada, utilizando os contatos Ag-CdO que têm tido grande utilização prática em relés para cargas de média corrente. Além disso, são estudadas as relações entre as características de aderência, características de descarga de arco e propriedades da superfície de contato após as operações. O mecanismo de aderência é considerado com base nesses dados. Os resultados são os seguintes: (1) O fenômeno de aderência ocorre intermitentemente desde as operações iniciais e dura até o fim. (2) O valor µ + 2 σ (a soma do valor médio e do múltiplo integral do desvio padrão da força de aderência) aumenta proporcionalmente à corrente do circuito. Por outro lado, possui valor máximo em uma tensão de circuito, um pouco menor que a tensão mínima do arco. (3) Os fatores que causam a aderência são considerados divididos em fatores diretos e seus fatores raiz. Considera-se que um fator direto dominante é a soldagem, e que seu fator raiz é a ponte ou soldagem por calor de Joule. Por outro lado, a força de aderência torna-se bastante menor à medida que a tensão do circuito aumenta, na faixa de tensão do circuito onde ocorre a descarga regular do arco.
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Kenya MORI, Takeshi AOKI, Kiyokazu KOJIMA, Kunihiro SHIMA, "Influence of Electrical Load Conditions on Sticking Characteristics in Silver-Oxide Contacts" in IEICE TRANSACTIONS on Electronics,
vol. E83-C, no. 9, pp. 1414-1421, September 2000, doi: .
Abstract: Sticking is one of dominant characteristics of reliability in relays for medium current loads from several amperes to several dozen amperes, which are used for relays for automobiles, industrial control units or power supplies of household electrical appliances. Correlations between the release failures due to sticking and contact characteristics such as arc discharges, material parameters and design factors in relays have never been always made clear. This puts difficulty in the way of reasonable development of contact materials and rational design of relays. So, dependence of electrical load conditions on sticking characteristics are investigated, using the Ag-CdO contacts which have had high practical use to relays for medium current loads. Furthermore, relationship among the sticking characteristics, arc discharge characteristics and contact surface properties after operations are studied. Mechanism of sticking is considered on the basis of those data. The results are as follows: (1) Sticking phenomenon occurs intermittently from initial operations and lasts to the end. (2) The µ + 2 σ value (the sum of the mean value and the integral multiple of the standard deviation of sticking force) increases in proportion to the circuit current. On the other hand, it has the maximum value at a circuit voltage, slightly less than the minimum arc voltage. (3) Factors causing the sticking are considered to be divided into direct factors and its root factors. It is considered that a dominant direct factor is welding, and that its root factor is bridge or welding by Joule's heat. On the other hand, the sticking force becomes rather lower as the circuit voltage increases, in the circuit voltage range where regular arc discharge occurs.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e83-c_9_1414/_p
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@ARTICLE{e83-c_9_1414,
author={Kenya MORI, Takeshi AOKI, Kiyokazu KOJIMA, Kunihiro SHIMA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Influence of Electrical Load Conditions on Sticking Characteristics in Silver-Oxide Contacts},
year={2000},
volume={E83-C},
number={9},
pages={1414-1421},
abstract={Sticking is one of dominant characteristics of reliability in relays for medium current loads from several amperes to several dozen amperes, which are used for relays for automobiles, industrial control units or power supplies of household electrical appliances. Correlations between the release failures due to sticking and contact characteristics such as arc discharges, material parameters and design factors in relays have never been always made clear. This puts difficulty in the way of reasonable development of contact materials and rational design of relays. So, dependence of electrical load conditions on sticking characteristics are investigated, using the Ag-CdO contacts which have had high practical use to relays for medium current loads. Furthermore, relationship among the sticking characteristics, arc discharge characteristics and contact surface properties after operations are studied. Mechanism of sticking is considered on the basis of those data. The results are as follows: (1) Sticking phenomenon occurs intermittently from initial operations and lasts to the end. (2) The µ + 2 σ value (the sum of the mean value and the integral multiple of the standard deviation of sticking force) increases in proportion to the circuit current. On the other hand, it has the maximum value at a circuit voltage, slightly less than the minimum arc voltage. (3) Factors causing the sticking are considered to be divided into direct factors and its root factors. It is considered that a dominant direct factor is welding, and that its root factor is bridge or welding by Joule's heat. On the other hand, the sticking force becomes rather lower as the circuit voltage increases, in the circuit voltage range where regular arc discharge occurs.},
keywords={},
doi={},
ISSN={},
month={September},}
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TY - JOUR
TI - Influence of Electrical Load Conditions on Sticking Characteristics in Silver-Oxide Contacts
T2 - IEICE TRANSACTIONS on Electronics
SP - 1414
EP - 1421
AU - Kenya MORI
AU - Takeshi AOKI
AU - Kiyokazu KOJIMA
AU - Kunihiro SHIMA
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E83-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2000
AB - Sticking is one of dominant characteristics of reliability in relays for medium current loads from several amperes to several dozen amperes, which are used for relays for automobiles, industrial control units or power supplies of household electrical appliances. Correlations between the release failures due to sticking and contact characteristics such as arc discharges, material parameters and design factors in relays have never been always made clear. This puts difficulty in the way of reasonable development of contact materials and rational design of relays. So, dependence of electrical load conditions on sticking characteristics are investigated, using the Ag-CdO contacts which have had high practical use to relays for medium current loads. Furthermore, relationship among the sticking characteristics, arc discharge characteristics and contact surface properties after operations are studied. Mechanism of sticking is considered on the basis of those data. The results are as follows: (1) Sticking phenomenon occurs intermittently from initial operations and lasts to the end. (2) The µ + 2 σ value (the sum of the mean value and the integral multiple of the standard deviation of sticking force) increases in proportion to the circuit current. On the other hand, it has the maximum value at a circuit voltage, slightly less than the minimum arc voltage. (3) Factors causing the sticking are considered to be divided into direct factors and its root factors. It is considered that a dominant direct factor is welding, and that its root factor is bridge or welding by Joule's heat. On the other hand, the sticking force becomes rather lower as the circuit voltage increases, in the circuit voltage range where regular arc discharge occurs.
ER -