The cast insulation of current conductors is made of epoxy resin having a low thermal conductivity, which worsens heat emission from the current-carrying busbar. A method is proposed for calculating the long-term permissible current for conductors with cast insulation with consideration of various locations indoors in electric power facilities or outdoors. The method is based on solving the heat balance equation. The results of the calculations are given for specific types of conductors and their analysis is performed.
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Conductors with cast insulation [in Russian]. http://bel-transform.by_images_secampledata_busbars-conductors_conductrs_condtpl_TPL.pdf
TIRESCA-busbar system. http://www.mge.ch_en-ch_products_tirescar-busbar-systems
RTK-Élektro-M. Product catalog [in Russian]. https://sechino-provod.ru_upload_iblock_6d0_6d0a1c2419cf65c51ded4cf2.pdf
Duresca Conductors. Product Catalog [in Russian]. http://toko-provod.ru_wp-content_uploads_Catalog-Tokoprovod-Duresca.pdf
M. A. Mikheev and I. M. Mikheeva, Principles of Heat Transfer [in Russian], Énergiya, Moscow (1977).
STO 56947007-29.240.55.143-2013. Method of Calculating Limit Current Loads According to Conditions of Preservation of Mechanical Strength of Wires and Permissible Dimensions of Aerial Lines [in Russian], FSK EÉS, Intr. 2013-02-13.
SNiP II-3-79. Construction Heat Engineering [in Russian], Moscow (2012).
SNiP 23-01-9. Construction Climatology [in Russian], Moscow (2012).
Yu. V. Koridtskii et al. (eds.), Handbook on Electrical Engineering Materials. 3rd Edition [in Russian], Énergoatomizdat, Moscow (1986).
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Translated from Élektricheskie Stantsii, No. 4, April 2019, pp. 32 – 36.
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Vikharev, A.P. Method of Calculating the Long-Term Permissible Current of Conductors with Cast Insulation. Power Technol Eng 53, 503–507 (2019). https://doi.org/10.1007/s10749-019-01106-9
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DOI: https://doi.org/10.1007/s10749-019-01106-9