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A Study of Short-term Partial Discharge Aging of Polypropylene Film

Krishnan, V and Nema, RS (1989) A Study of Short-term Partial Discharge Aging of Polypropylene Film. In: IEEE Transactions on Electrical Insulation, 24 (6). pp. 1133-1140.


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Polypropylene film has been subjected to surface discharges of known initial maximum discharge magnitude for different periods of time (2 to 12 h) at sub-atmospheric pressures ranging from 10 to 66.50 kPa, using uniform field electrodes with ac voltage stress of 625 kV/cm. By measuring the residual breakdown voltage of the aged samples, a degradation rate curve is obtained and an estimate of the life of the films under experimental conditions is attempted. These estimates are compared with results from life tests where the samples are stressed to failure. The estimates are extended to normal service condi-tions. The erosion of the films is studied from the microphotographs of the aged samples.

Item Type: Journal Article
Publication: IEEE Transactions on Electrical Insulation
Publisher: IEEE
Additional Information: ©1989 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Electrical Sciences > High Voltage Engineering (merged with EE)
Date Deposited: 04 Oct 2005
Last Modified: 19 Sep 2010 04:20
URI: http://eprints.iisc.ac.in/id/eprint/3765

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