The function of this system is the Electrify of the moving equipment by mean of power cables. And is in different types:
This system is designed to deliver the electricity without using moving cable mostly in long paths. one of the adventages of this system is to electrify several moving equipment according to current capacity of conductors. Also this system can be used to electrify the stationar yequipment in order to safe and reliable electrification.
Enclosed Conductor Systems
Open Conductor Systems