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Gas flow and composition effects on arc motion in current limiting circuit breakers

Gas flow and composition effects on arc motion in current limiting circuit breakers
Gas flow and composition effects on arc motion in current limiting circuit breakers
Arc motion in low voltage (240 VAC) high current (103-104 A) current limiting circuit breakers is dominated by arc root mobility. This is strongly affected by the gas flow and gas composition in the contact region, but there is little experimental data on these effects. New pressure and spectral data measurement during arc movement are presented using a flexible test apparatus and an arc imaging system. These measurements are used to investigate gas flow characteristics in the arc chamber. The chemical and physical phenomena occurring during the arc motion are discussed. The combination of optical and spectral data provides new insight into the arc motion. Also studied are the influences of arc chamber material, contact material, and contact opening speed. These data are used to improve arc control for a low contact opening velocity of 1 ms-1.
0780366670
12-17
Institute of Electrical and Electronics Engineers
Pechrach, K.
58bf3627-cfd9-4909-a76b-d236bfdcadca
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Weaver, P.M
649cbff1-3909-4d09-bab6-79ef325089d0
Pechrach, K.
58bf3627-cfd9-4909-a76b-d236bfdcadca
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Weaver, P.M
649cbff1-3909-4d09-bab6-79ef325089d0

Pechrach, K., McBride, J.W. and Weaver, P.M (2002) Gas flow and composition effects on arc motion in current limiting circuit breakers. In Proceedings of the Forty-Seventh IEEE Holm Conference on Electrical Contacts, 2001. Institute of Electrical and Electronics Engineers. pp. 12-17 . (doi:10.1109/HOLM.2001.953184).

Record type: Conference or Workshop Item (Paper)

Abstract

Arc motion in low voltage (240 VAC) high current (103-104 A) current limiting circuit breakers is dominated by arc root mobility. This is strongly affected by the gas flow and gas composition in the contact region, but there is little experimental data on these effects. New pressure and spectral data measurement during arc movement are presented using a flexible test apparatus and an arc imaging system. These measurements are used to investigate gas flow characteristics in the arc chamber. The chemical and physical phenomena occurring during the arc motion are discussed. The combination of optical and spectral data provides new insight into the arc motion. Also studied are the influences of arc chamber material, contact material, and contact opening speed. These data are used to improve arc control for a low contact opening velocity of 1 ms-1.

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More information

Published date: 7 August 2002
Venue - Dates: Forty-Seventh IEEE Holm Conference on Electrical Contacts, Montreal, Canada, 2001-09-09 - 2001-09-11

Identifiers

Local EPrints ID: 21713
URI: http://eprints.soton.ac.uk/id/eprint/21713
ISBN: 0780366670
PURE UUID: 9bb0f34e-5c19-44d5-b698-1b20da6563c2

Catalogue record

Date deposited: 23 Feb 2007
Last modified: 22 Jul 2020 16:40

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