سال انتشار: ۱۳۷۷
محل انتشار: سیزدهمین کنفرانس بین المللی برق
تعداد صفحات: ۸
Gharehpetian – Elec. Eng. Department Amirkabir University of Technology Tehran 15914, Iran
Mohseni – Elec. Eng. Department University of Tehran Tehran 14399,Iran
At the first part the main definitions about temperat ure- rise and its test have been described. Then the loading of the transformers beyond the nameplate rating has been presented. In the last part of the paper the aging of insulating materials and the loss of transformer life expectancy have been discussed.