Evtim Ruychoff Kartselin is a lecturer in the Department of Fundamentals of Electrical Engineering and Power Engineering at Technical University Gabrovo, Bulgaria. His professional activities focus on electrical engineering education and industrial power systems analysis, with a 55-year institutional history reflected in his 2020 publication. Academic Affiliation: Technical University Gabrovo Teaching Role: Department of Fundamentals of Electrical Engineering and Power Engineering Research Interests span electrical safety, power system optimization, and energy efficiency. Key topics include: Reactive power modeling in industrial power supply systems Transformer voltage regulation for energy loss reduction Electrical fault analysis in fire investigations Relay protection quality assessment Cable engineering safety standards Publication Trends (2016–2021) demonstrate expertise in electrical safety protocols, mathematical modeling for power systems, and industrial energy optimization. His work bridges theoretical electrical engineering with practical applications in industrial and administrative infrastructure safety.











