[IEEE 2017 International Conference on Electromagnetic Devices and Processes in Environment Protection with Seminar Applications of Superconductors (ELMECO & AoS) - Lublin (2017.12.3-2017.12.6)] 2017 International Conference on Electromagnetic Devices and Processes in Environment Protection with Seminar Applications of Superconductors (ELMECO & AoS) - Magnetic core model for a reliable simulation of three-phase transformer in PSPICE