Partial discharge and breakdown behavior of enamel-insulated copper conductors in carbon powder

Document Type

Conference Proceeding

Publication Date


Publication Title

IEEE Xplore

Conference Name

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena


It is clear that during the manufacturing of the windings of an electric motor, enamel-insulated copper conductors are subjected to mechanical strain. The electrical performance of the enamel insulation could be adversely affected by this mechanical strain. Partial discharge inception voltage (PDIV) is a useful tool for comparing the performance of insulations. Therefore, PDIV tests along with breakdown voltage tests were performed for evaluating the effect of different levels of tensile-strain on the electrical properties of the enamel insulation of the copper conductor. In a previous work the enamel insulation was tested between two parallel-plate electrodes. In this study, however, unstrained and tensile-strained, enamel-insulated, copper conductors with rectangular cross-section were investigated and compared for their breakdown voltages and partial discharge behavior in a carbon powder medium.


Shenzhen, China

Rights Statement

This is a RoMEO green publisher - Must link to publisher version

© Copyright 2013 IEEE