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Electrical contact phenomena during impact

Electrical contact phenomena during impact
Electrical contact phenomena during impact
The authors outline the theory of impact as it applies to electrical contacts. The concept of the coefficient of restitution is evaluated as a means of modeling the events at impact. The events occurring during the impact of electrical contacts are vital to the long-term reliability of the contacts; so design parameters are considered in terms of their influence upon the dynamics of impact and bounce. Experimental studies are presented which include the measurement of impact forces, impact time, and both current and voltage characteristics. The influence of preimpact arcing is evaluated in the medium current range, and is shown to have an effect on the events occurring during the first impact. A mathematical model is proposed for electrical contact bounce, but it is shown that reducing the arcing may not always reduce contact wear
0-7803-0231-1
132-140
IEEE
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Sharkh, S.M.
c8445516-dafe-41c2-b7e8-c21e295e56b9
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Sharkh, S.M.
c8445516-dafe-41c2-b7e8-c21e295e56b9

McBride, J.W. and Sharkh, S.M. (1992) Electrical contact phenomena during impact. In Electrical Contacts: 1991 Proceedings of the Thirty-Seventh IEEE HOLM Conference on Electrical Contacts. IEEE. pp. 132-140 . (doi:10.1109/HOLM.1991.170814).

Record type: Conference or Workshop Item (Paper)

Abstract

The authors outline the theory of impact as it applies to electrical contacts. The concept of the coefficient of restitution is evaluated as a means of modeling the events at impact. The events occurring during the impact of electrical contacts are vital to the long-term reliability of the contacts; so design parameters are considered in terms of their influence upon the dynamics of impact and bounce. Experimental studies are presented which include the measurement of impact forces, impact time, and both current and voltage characteristics. The influence of preimpact arcing is evaluated in the medium current range, and is shown to have an effect on the events occurring during the first impact. A mathematical model is proposed for electrical contact bounce, but it is shown that reducing the arcing may not always reduce contact wear

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More information

Published date: April 1992
Venue - Dates: 37th IEEE Holm Conference on Electrical Contacts, Chicago, United States, 1991-10-06 - 1991-10-09
Organisations: Mechatronics

Identifiers

Local EPrints ID: 202337
URI: http://eprints.soton.ac.uk/id/eprint/202337
ISBN: 0-7803-0231-1
PURE UUID: d2c21459-df3b-4346-b133-4f5a0e96f2c3
ORCID for J.W. McBride: ORCID iD orcid.org/0000-0002-3024-0326
ORCID for S.M. Sharkh: ORCID iD orcid.org/0000-0001-7335-8503

Catalogue record

Date deposited: 08 Nov 2011 17:07
Last modified: 15 Mar 2024 02:48

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