1. Department of Electrical and Computer Engineering, High Voltage Laboratory, University of Patras, Patras, Greece
2. Raycap S.A., Drama, Greece
3. School of Applied Mathematics and Physical Sciences, National Technical University of Athens, Athens, Greece
4. Department of Electrical and Computer Engineering, University of Peloponnese, Patras, Greece
5. School of Mineral Resources Engineering, Technical University of Crete, Chania, Greece
6. School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece