1. Electrical Engineering Department Faculty of Engineering, Menoufia University Gamal Abdel Nasser Street Shebin Elkom Menoufia 32511 Egypt
2. High Voltage Engineering and Dielectric Materials Lab. Faculty of Engineering Gamal Abdel Nasser Street Shebin Elkom Menoufia 32511 Egypt
3. Alexandria and West Delta Zone Egyptian Electricity Transmission Company (EETC) Sadat Menoufia 11517 Egypt