Ageing of rotating machines insulation-mechanisms, measurement techniques

Author

Fruth, B. ; Liptak, G. ; Ullrich, L. ; Dunz, T. ; Niemeyer, L.

Author_Institution

Asea Brown Boveri Corp. Res., Baden, Switzerland

fYear

1989

Firstpage

597

Lastpage

601

Abstract

The long-term ageing of insulator models until breakdown was investigated with repetitive diagnostic measurements. The physical mechanisms in models with isolated defects were examined, and improved diagnostic tools were developed on the basis of the ageing experiments. Experimental results on the properties of a mica paper, glass fiber, and epoxy resin composite are presented. The authors discuss the effect of temperature on ageing and especially on defect induction by thermomechanical forces

Keywords

ageing; composite insulating materials; electric breakdown of solids; filled polymers; glass fibres; insulation testing; machine insulation; mica; paper; partial discharges; permittivity; defect induction; diagnostic tools; electric breakdown; epoxy resin composite; glass fiber; insulator models; long-term ageing; measurement techniques; mica paper; partial discharges; repetitive diagnostic measurements; rotating machines insulation; temperature dependence; thermomechanical forces; Aging; Delamination; Dielectric measurements; Dielectrics and electrical insulation; Glass; Measurement techniques; Partial discharge measurement; Rotating machines; Temperature; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Solid Dielectrics, 1989., Proceedings of the 3rd International Conference on

Conference_Location

Trondheim

Type

conf

DOI

10.1109/ICSD.1989.69266

Filename

69266