Carbonization Migration of Polymer Insulating Material Under Magnetic Field

Phenolic resin laminate (PL) was employed to investigate the effect of magnetic field on migration rate of surface carbonization which is the primary reason for surface dielectric breakdown. A needle-plate electrode system was used and the distance between the electrodes was 4 mm. Experiments were c...

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Bibliographic Details
Published in2006 IEEE 8th International Conference on Properties & applications of Dielectric Materials pp. 423 - 426
Main Authors Du, B. X, Chen, N., Gao, Y., Zhang, Xiangjin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2006
Subjects
Dielectric materials
Dielectrics and electrical insulation
Electrodes
Magnetic fields
Magnetic flux density
Magnetic materials
Organic materials
Plastic insulation
Polymers
Resins
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Summary:Phenolic resin laminate (PL) was employed to investigate the effect of magnetic field on migration rate of surface carbonization which is the primary reason for surface dielectric breakdown. A needle-plate electrode system was used and the distance between the electrodes was 4 mm. Experiments were carried out under dc pulse voltage with a frequency rang from 50 Hz to 100 Hz. The magnetic flux density was made from 120 mT to 240 mT. The migration of surface carbonization was observed by using a monocular video-zoom-microscope and calculated by measuring the length of carbonization path. Obtained results revealed that with increase of the magnetic flux density, the migration rate increased when E×B drifted into the surface but decreased when E×B drifted away from the surface.
ISBN:9781424401895
1424401895
ISSN:2160-9225
DOI:10.1109/ICPADM.2006.284205