In-span equipment is any piece of equipment which attaches to a catenary wire or auxiliary wire in the span between two structures.
Section insulators, splices, line guards and cut-in insulation are examples of in-span equipment.
In Lineardraft, the 3D model of in-span equipment is defined by the design catalogue it belongs to, whereas the 2D annotation is controlled by project settings.
Below is an example of in-span equipment highlighted between two masts.