Abstract:
We report here the results of the simulation of a defect in the breathing system of a high voltage transformer. These investigations serve also to evaluate the moisture u...Show MoreMetadata
Abstract:
We report here the results of the simulation of a defect in the breathing system of a high voltage transformer. These investigations serve also to evaluate the moisture uptake velocity of mineral oil under selective conditions. The studies were performed at temperatures between 23 and 60/spl deg/C while the surrounding air relative humidity was varied between 20 and 90% to simulate climatic variations. The results were discussed regarding the AC electric strength standard according to VDE or IEC. Finally a correlation between the surrounding air relative humidity, temperature and oil moisture uptake rate is proposed.
Published in: 2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)
Date of Conference: 15-18 October 2000
Date Added to IEEE Xplore: 06 August 2002
Print ISBN:0-7803-6413-9