Lightning impulse (LI) breakdown testing of a rubber-epoxy interface
DOI:
https://doi.org/10.5324/nordis.v0i25.2371Palabras clave:
Lightning impulse, Breakdown, InterfaceResumen
The lightning impulse (LI) breakdown strength of a rubber-epoxy interface was measured using a test cell developed earlier for AC breakdown testing. The electrically active length of the rubber-epoxy interface in the test cell was about 10 mm. The rubber was compressed and the pressure in the rubber-epoxy interface was controlled and measured. It was shown that the test cell performed well under LI breakdown testing with the majority of the breakdowns located at the rubber-epoxy interface as desired and not in the bulk insulation. A higher LI breakdown strength was obtained for smoother epoxy surfaces.
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