To meet the requirements, we developed a 2500 mm² CU conductor with enamelled wires as well as a new methodology to remove the enamel without damaging the conductor.
We produced the cables in our ultra-modern facility in Cologne, Germany, and supplied them on huge drums, each weighing over 60 tonnes.
Each project section presented its own particular challenges. The Penrose to Hobson Street section involved the 9 km tunnel. Health and safety issues were in focus due to installation in a 60 m deep shaft and work in a tunnel with live 110 kV, 33 kV and 22 kV circuits running above and through the joint bays. Our project team developed measures to deal with the risks, and the customer was especially impressed by a joint bay tent that we created to allow jointing operations to proceed safely and smoothly.
Our team was also involved when the customer developed a special cable-laying machine.
In the Pakuranga to Penrose section, we had to handle traffic management and the crossing of two rivers. We installed the cables onto existing bridges which were reinforced. Minimizing the impact on residents and businesses and keeping the local community updated were important factors for the successful completion of this prestigious project.