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Titolo:
Arc structure, arc motion, and gas pressure between laterally enclosed arcrunners
Autore:
Zeller, PR; Rieder, WF;
Indirizzi:
Vienna Tech Univ, Inst Switching Devices & High Voltage Technol, A-1040 Vienna, Austria Vienna Tech Univ Vienna Austria A-1040 e Technol, A-1040 Vienna, Austria
Titolo Testata:
IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES
fascicolo: 3, volume: 24, anno: 2001,
pagine: 337 - 341
SICI:
1521-3331(200109)24:3<337:ASAMAG>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Keywords:
arc motion; arc shape; gas flow; pressure;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Zeller, PR Vienna Tech Univ, Inst Switching Devices & High Voltage Technol, A-1040 Vienna, Austria Vienna Tech Univ Vienna Austria A-1040 A-1040 Vienna, Austria
Citazione:
P.R. Zeller e W.F. Rieder, "Arc structure, arc motion, and gas pressure between laterally enclosed arcrunners", IEEE T COMP, 24(3), 2001, pp. 337-341

Abstract

Arc motion along parallel arc runners tightly enclosed by lateral walls was investigated experimentally, both with and without an exhaust barrier at the outlet. High speed movies (33 000 frames/s) were taken and the gas pressure was measured at several locations along the path of arc motion. The measurements show how both arc shape and motion depend on the parameters arc length (5-15 mm) and exhaust constriction. In many cases both arc shape and arc motion were influenced by a plasma volume forming a "nose" in front of the arc next to one of the electrodes. Spontaneous formation of an anode spot and/or a cathode spot in front of the arc may ignite a parallel current path and initiate a commutation process. The plasma volume in front of the arc is less significant at low electrode distance, high arc current, high blast field, and in more realistic chambergeometries with an exhaust barrier. Cold gas shock waves hitting the are strongly influence both arc motion and shape. Simulation of arc motion may be a helpful tool in order to save expensive experiments when designing low voltage miniature circuit breakers. The highspeed movies showed that the arc motion is sometimes strongly influenced by commutation processes requiring a very complex arc model.

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Documento generato il 26/01/20 alle ore 16:04:33