In the world of electrical design, guaranteeing the safety and effectiveness of electric systems is paramount. Different elements and gadgets are necessary to achieving this, and among them, vertical disconnectors, fuse switch disconnectors, isolator switches, HV switch disconnectors, busbar systems, surge protective gadgets (SPDs), and combiner boxes play critical duties. http://tawassol.univ-tebessa.dz/index.php?qa=user&qa_1=dibblegalley32