Electrical Characteristics of Deposits on the Contact Surface Switched in the Organic Gas Atmosphere
Summary :
For communication relays, the contact reliability in the low electrical load circuit has been of great importance for the purpose of control of highly reliable electronic devices. With reference to the study of contact failure mechanism, the fact that the formation of black powder on the contact surface caused to increase contact resistance of relays in the organic gas atmosphere was well known. In this study, the electrical characteristics of black powder formed on the relay contacts was investigated in comparison with a sulfide. Cosequently, the interesting relationship between contact resistance and electrical breakdown was obtained. The inflection point was observed in voltage-current (V-I) characteristics for the black powder deposit which was more than 200 mΩ in contact resistance. And when the current increased, there occurred not only a decrease but also an increase in contact resistance. These results indicated that the accurate contact resistance should be evaluated using V-I characteristics. In addition to that, it was proposed that the allowable level of contact resistance for the contact failure was about 150 mΩ for the black powder deposit.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E74-C No.3 pp.593-598
- Publication Date
- 1991/03/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Components
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Kazuhisa YOSHIDA, "Electrical Characteristics of Deposits on the Contact Surface Switched in the Organic Gas Atmosphere" in IEICE TRANSACTIONS on Electronics,
vol. E74-C, no. 3, pp. 593-598, March 1991, doi: .
Abstract: For communication relays, the contact reliability in the low electrical load circuit has been of great importance for the purpose of control of highly reliable electronic devices. With reference to the study of contact failure mechanism, the fact that the formation of black powder on the contact surface caused to increase contact resistance of relays in the organic gas atmosphere was well known. In this study, the electrical characteristics of black powder formed on the relay contacts was investigated in comparison with a sulfide. Cosequently, the interesting relationship between contact resistance and electrical breakdown was obtained. The inflection point was observed in voltage-current (V-I) characteristics for the black powder deposit which was more than 200 mΩ in contact resistance. And when the current increased, there occurred not only a decrease but also an increase in contact resistance. These results indicated that the accurate contact resistance should be evaluated using V-I characteristics. In addition to that, it was proposed that the allowable level of contact resistance for the contact failure was about 150 mΩ for the black powder deposit.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e74-c_3_593/_p
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@ARTICLE{e74-c_3_593,
author={Kazuhisa YOSHIDA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Electrical Characteristics of Deposits on the Contact Surface Switched in the Organic Gas Atmosphere},
year={1991},
volume={E74-C},
number={3},
pages={593-598},
abstract={For communication relays, the contact reliability in the low electrical load circuit has been of great importance for the purpose of control of highly reliable electronic devices. With reference to the study of contact failure mechanism, the fact that the formation of black powder on the contact surface caused to increase contact resistance of relays in the organic gas atmosphere was well known. In this study, the electrical characteristics of black powder formed on the relay contacts was investigated in comparison with a sulfide. Cosequently, the interesting relationship between contact resistance and electrical breakdown was obtained. The inflection point was observed in voltage-current (V-I) characteristics for the black powder deposit which was more than 200 mΩ in contact resistance. And when the current increased, there occurred not only a decrease but also an increase in contact resistance. These results indicated that the accurate contact resistance should be evaluated using V-I characteristics. In addition to that, it was proposed that the allowable level of contact resistance for the contact failure was about 150 mΩ for the black powder deposit.},
keywords={},
doi={},
ISSN={},
month={March},}
Copy
TY - JOUR
TI - Electrical Characteristics of Deposits on the Contact Surface Switched in the Organic Gas Atmosphere
T2 - IEICE TRANSACTIONS on Electronics
SP - 593
EP - 598
AU - Kazuhisa YOSHIDA
PY - 1991
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E74-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 1991
AB - For communication relays, the contact reliability in the low electrical load circuit has been of great importance for the purpose of control of highly reliable electronic devices. With reference to the study of contact failure mechanism, the fact that the formation of black powder on the contact surface caused to increase contact resistance of relays in the organic gas atmosphere was well known. In this study, the electrical characteristics of black powder formed on the relay contacts was investigated in comparison with a sulfide. Cosequently, the interesting relationship between contact resistance and electrical breakdown was obtained. The inflection point was observed in voltage-current (V-I) characteristics for the black powder deposit which was more than 200 mΩ in contact resistance. And when the current increased, there occurred not only a decrease but also an increase in contact resistance. These results indicated that the accurate contact resistance should be evaluated using V-I characteristics. In addition to that, it was proposed that the allowable level of contact resistance for the contact failure was about 150 mΩ for the black powder deposit.
ER -
English
