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2. (5) “Investigation & Estimation of Dynamic Loading for Substations”, Electric Technology Research Association Report, Vol. 61, No. 2 (2005-11) (in Japanese)
3. (6) Standard of the Japanese Electrotechnical Committee : “Guide for The Determination of Thermal Endurance Properties of Electrical Insulating Materials”, JEC-6151 (2008) (in Japanese)
4. (7) K. Miyagi, E. Oe, and N. Yamagata : “Study on TI and HIC for thermally upgraded paper (TUP) with accelerated aging tests in mineral oil”, 2010 National Convention Record IEE Japan, 5-132 (2010) (in Japanese)
5. (9) IEC : “Design and application of liquid-immersed power transformers using high-temperature insulation materials”, International Standard Technical Specification, 60076, part 14 (2009)