'International Council on Large Electric Systems - Cigre, Croatian National Committee'
Abstract
This paper describes an accelerated ageing experiment of transformer oil/paper insulation with preset moisture levels. These samples were tested with return voltage and polarisation/depolarisation measurements. Molecular weight has also been measured with Gel Permeation Chromatography (GPC). Results suggested the impact of moisture on the ageing of oil/paper insulation. An attempt has been made regarding the separation of ageing and moisture on oil/paper insulation using the dielectric polarisation measurements
