... electrification systems.enclosed conductor busway,trolley bar The HFP 56 system is a powerail,protected from contact ( IP 24 ),for ... feeds,curves,switches or other fix points is exceeding 20m.Install one expansion joint every 100m.Anti-condensation sectionsThese sections are ... to the machinery track.--Before running the powerail,Check the system for esay running of the current collector trolleys,i.e ...