Title :
Tensile strength of electrical insulating paper in natural ester and mineral oil
Author :
Shim, Meoung-Seop ; Jung, Joong-Il ; An, Jung-Sik ; Choi, Sun-Ho ; Seo, Yu-Jin ; Huh, Chang-Su
Author_Institution :
Dept. of Electr. Eng., Inha Univ., Incheon, South Korea
Abstract :
Aging of transformer insulating material in natural ester insulating oil was compared to that in conventional transformer oil. Aging of insulating paper has been studied by performing accelerated thermal aging test. Sealed aging test vessels containing copper, laminated core, Kraft/Diamond paper, and insulating oil (natural oil or mineral oil) were aged at 140°C during 500, 1000 and 1500 hours. The extent of paper degradation after aging was determined using paper tensile strength in the aged fluid. The Kraft/Diamond Paper aged in conventional transformer oil degraded at a significantly faster rate than in natural ester insulating oil.
Keywords :
ageing; insulating materials; life testing; power transformer testing; tensile strength; transformer oil; accelerated thermal aging test; aged fluid; electrical insulating paper; mineral oil; natural ester; temperature 140 degC; tensile strength; time 1000 hour; time 1500 hour; time 500 hour; transformer insulating material; transformer oil; Aging; Electrical engineering; Minerals; Oil insulation; Petroleum; Power transformer insulation; dielectric liquids; dielectric materials; natural ester; oil insulation; power transformers;
Conference_Titel :
Power Engineering and Optimization Conference (PEOCO), 2010 4th International
Conference_Location :
Shah Alam
Print_ISBN :
978-1-4244-7127-0
DOI :
10.1109/PEOCO.2010.5559209
