Fort William Catenary System
Practecology was commissioned to film the construction of a new overhead pylon and catenary system undertaken by GridPower Actavo.
Construction of New Tower
As part of the development of the transmission network around Fort William, SSE required a new overhead tower to be constructed adjacent to an existing sub station. This new tower was also the starting point for the use of a catenary system - a system used to connect electrical conductor between two towers which spanned an inaccessible area. In the case of this overhead line, this area comprised private gardens, the River Nevis, and a frequently used road serving as access to Ben Nevis Visitor Centre.
Building foundation of new tower
Moving the new tower into position
Erecting the new tower
To install the new conductor over the River Nevis a catenary system was used. This involved connecting a small motor to the existing conductor and pulling a rope across the span between two towers. The rope is kept off the ground by a series of pulleys connected to the existing conductor. Once the motor has reached the other side of the span the new conductor can be attached to the rope and pulled back across to the starting point.
Motor connected to existing OHL
Connecting the catenary system
Pulling the catenary system
Crossing the River Nevis between towers
All works undertaken in Fort William can be see on the video produced by the Electrical Supervisor Tomasz Kowalksi https://www.youtube.com/watch?v=yMNDi9-ttu8