This operational catenary system is constructed of two main components, stanchions and conductors. Full Stanchions support the conductors from both sides. Power Stanchions supply current to the system via a terminal post. The conductors are fully insulated from the stanchions.
Conductors are available for all track and curve radii.
The cost of a system will vary depending on the size, but it is inexpensive. Of course each system is as unique as the layout it's on.