Thermal characteristics of high-current vacuum arcs of the axial magnetic field contacts

dc.contributor.authorHwang, J.–H.
dc.contributor.authorLee, J.-C.
dc.contributor.authorChoi, M.–J.
dc.contributor.authorKwon, J.–R.
dc.contributor.authorKim, Y.–J.
dc.date.accessioned2014-11-21T06:06:38Z
dc.date.available2014-11-21T06:06:38Z
dc.date.issued2007
dc.description.abstractPaper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.en_US
dc.description.abstractThe capabilities and advantages of vacuum interrupters (VIs) have been widely recognized on switching and controlling the fault currents in medium voltage level. Due to its environmental friendliness, there were various research and developments for using VIs in transmission and distribution lines. An axial magnetic field (AMF) electrode has more advantages of the switching capability than other contact designs such as reducing the arc voltage, securing higher current value for transferring from the constriction arc to the diffused arc and regulating the arc current distribution. The arc constriction should increase the heat flux and the local temperature on the electrodes and result in the surface melting, which has undesirable influences on the characteristics of vacuum arc and surroundings. In the present study, we considered two different types of AMF electrodes used widely in industries, one is coil type and the other is cup type, to investigate the effective arc area and the thermal characteristics by high-current vacuum arcs through three-dimensional FEM analysis. Calculated results were compared with the results by a commercial package, MAXWELL 3D, which is a reliable analysis tool for the electro-magnetic fields, to validate the present calculation.en_US
dc.description.librariancs2014en_US
dc.format.extent5 pagesen_US
dc.format.mediumPDFen_US
dc.identifier.citationHwang, J-H, Lee, J-C, Choi, M–J, Kwon, J–R & Kim, Y–J 2007, Thermal characteristics of high-current vacuum arcs of the axial magnetic field contacts, Paper presented to the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July 2007.en_US
dc.identifier.isbn9781868546435
dc.identifier.urihttp://hdl.handle.net/2263/42687
dc.language.isoenen_US
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_US
dc.relation.ispartofHEFAT 2007
dc.rightsUniversity of Pretoriaen_US
dc.rights.uriUniversity of Pretoriaen_US
dc.subjectVacuum interruptersen_US
dc.subjectTransmission and distribution linesen_US
dc.subjectAxial magnetic fielden_US
dc.subjectRegulating the arc current distributionen_US
dc.subjectSurface meltingen_US
dc.subjectVacuum arcen_US
dc.subjectElectro-magnetic fieldsen_US
dc.titleThermal characteristics of high-current vacuum arcs of the axial magnetic field contactsen_US
dc.typePresentationen_US

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