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Arc root mobility during contact opening at high current

Arc root mobility during contact opening at high current
Arc root mobility during contact opening at high current
This paper presents a test system, designed for the investigation of short circuit arcs related to miniature circuit breakers operating in a 240 V, AC supply. An optical fiber imaging system is used to identify arc root motion, with short circuit current up to 6 kA. Two methods are used to measure contact motion, a noncontact linear position sensor, and the optical fiber array. The optical fiber array uses software image processing to identify the position of the arc roots in the arc chamber. The identification of the arc roots allows for a study of the arc immobility at the initial stages of the event. Results are presented on variation of peak current level and arc runner materials on arc root motion for one geometry. The cathode root motion is shown to dominate the event.
1070-9886
61-67
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Weaver, P.M.
649cbff1-3909-4d09-bab6-79ef325089d0
Jeffery, P.A.
bdb955dd-715d-41c2-821a-8122e05aea8b
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Weaver, P.M.
649cbff1-3909-4d09-bab6-79ef325089d0
Jeffery, P.A.
bdb955dd-715d-41c2-821a-8122e05aea8b

McBride, J.W., Weaver, P.M. and Jeffery, P.A. (1998) Arc root mobility during contact opening at high current. IEEE Transactions on Components, Packaging, and Manufacturing Technology, Part A, 21 (1), 61-67. (doi:10.1109/95.679034).

Record type: Article

Abstract

This paper presents a test system, designed for the investigation of short circuit arcs related to miniature circuit breakers operating in a 240 V, AC supply. An optical fiber imaging system is used to identify arc root motion, with short circuit current up to 6 kA. Two methods are used to measure contact motion, a noncontact linear position sensor, and the optical fiber array. The optical fiber array uses software image processing to identify the position of the arc roots in the arc chamber. The identification of the arc roots allows for a study of the arc immobility at the initial stages of the event. Results are presented on variation of peak current level and arc runner materials on arc root motion for one geometry. The cathode root motion is shown to dominate the event.

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Published date: March 1998

Identifiers

Local EPrints ID: 21179
URI: http://eprints.soton.ac.uk/id/eprint/21179
ISSN: 1070-9886
PURE UUID: 52357cb5-b000-4b4b-9dc5-125303de4105

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Date deposited: 08 Nov 2006
Last modified: 04 Dec 2018 17:33

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