| Numéro |
J. Phys. IV France
Volume 129, October 2005
|
|
|---|---|---|
| Page(s) | 179 - 183 | |
| DOI | https://doi.org/10.1051/jp4:2005129038 | |
J. Phys. IV France 129 (2005) 179-183
DOI: 10.1051/jp4:2005129038
Quality assessment of electric low-power motor insulation on the ground of partial discharge investigations using the calibrated acoustic emission method
F. Witos1 and Z. Gacek21 Silesian University of Technology, Institute of Physics, Gliwice, Poland
2 Silesian University of Technology, Institute of Power Systems and Control, Gliwice, Poland
Abstract
Investigation of partial discharge (PD) within the models
representing winding insulation of low-power induction motors have been
carried out. Apparent electric charge introduced by PD sources has been
measured basing on the electric method, whereas the acoustic one has been
used to determine properties of acoustic emission signals in the time,
discrimination threshold and time-frequency domain. Acoustic emission
descriptors (signified by acronyms ADC and ADP, constructed in
discrimination threshold domain) distinguish and classify the models
connected with different impregnation technologies of winding insulation.
© EDP Sciences 2005