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Surface discharges along polymer foam

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7 Author(s)
Fromm, U. ; ABB Corp. Res., Vasteras, Sweden ; Li Ming ; Schutte, T. ; Walfridsson, L.
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The behavior of partial discharges (PD) along a polymer foam insulator in air is investigated at 50 Hz AC voltage. The results were compared to the PD behavior along other solid/air interfaces. The PD inception voltage depends on the dielectric constant of the solid material. It was highest for the foam/air interface. Further, the effect of the dielectric constant on the PD mechanism is investigated. A qualitative explanation is provided

Published in:

Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on

Date of Conference:

22-25 Jun 1998