Physical simulation of heat exchange between 6(10) kV voltage instrument transformer and its environment with natural convection and insolationSergey N. Litvinov, Vladimir D. Lebedev, Nikolay N. Smirnov, Vladimir V. Tyutikov and Ilkhom B. MakhsumovMATEC Web Conf., 194 (2018) 01035DOI: https://doi.org/10.1051/matecconf/201819401035