Permittivity mismatch and its influence on ramp breakdown performance
Permittivity mismatch and its influence on ramp breakdown performance
Ramp breakdown tests remain a useful method for characterizing polymeric materials. In the current paper the effects of sample and oil permittivity and electrode radius on measured DC breakdown strength are explored, with the aid of finite element modeling. Localised field enhancement appears to explain apparent decreases in electrical breakdown strength whereas the shape parameter in the Weibull distribution appears to be related to the size of electrically stressed area relative to the electrode radius. Care needs to be taken to choose an oil of equal or higher permittivity than the sample to be tested and to use a fixed electrode geometry and a fixed voltage ramp rate to ensure such tests are valid for comparative studies.
978-1-4673-4459-3
644-647
Hosier, I L
6a44329e-b742-44de-afa7-073f80a78e26
Vaughan, A S
6d813b66-17f9-4864-9763-25a6d659d8a3
Chippendale, R D
d886843e-2890-4942-a56b-b06af599de45
30 June 2013
Hosier, I L
6a44329e-b742-44de-afa7-073f80a78e26
Vaughan, A S
6d813b66-17f9-4864-9763-25a6d659d8a3
Chippendale, R D
d886843e-2890-4942-a56b-b06af599de45
Hosier, I L, Vaughan, A S and Chippendale, R D
(2013)
Permittivity mismatch and its influence on ramp breakdown performance.
IEEE 2013 International Conference on Solid Dielectrics (ICSD), , Bologna, Italy.
30 Jun - 04 Jul 2013.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Ramp breakdown tests remain a useful method for characterizing polymeric materials. In the current paper the effects of sample and oil permittivity and electrode radius on measured DC breakdown strength are explored, with the aid of finite element modeling. Localised field enhancement appears to explain apparent decreases in electrical breakdown strength whereas the shape parameter in the Weibull distribution appears to be related to the size of electrically stressed area relative to the electrode radius. Care needs to be taken to choose an oil of equal or higher permittivity than the sample to be tested and to use a fixed electrode geometry and a fixed voltage ramp rate to ensure such tests are valid for comparative studies.
Text
Paper160.pdf
- Version of Record
Restricted to Registered users only
Request a copy
More information
Published date: 30 June 2013
Venue - Dates:
IEEE 2013 International Conference on Solid Dielectrics (ICSD), , Bologna, Italy, 2013-06-30 - 2013-07-04
Organisations:
EEE
Identifiers
Local EPrints ID: 354565
URI: http://eprints.soton.ac.uk/id/eprint/354565
ISBN: 978-1-4673-4459-3
PURE UUID: 9de4fddc-77c2-4c9e-9c91-b591086672c6
Catalogue record
Date deposited: 12 Jul 2013 15:55
Last modified: 15 Mar 2024 03:18
Export record
Contributors
Author:
I L Hosier
Author:
A S Vaughan
Author:
R D Chippendale
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics