San Pellegrino Pass – 132 kV cable

TERNA, a large Italian operator in electricity transmission grids, invited Tratos to install a high load carrying, low sag conductor in the San Pellegrino Pass in the Alps, on the 132 kV Moena-Cencenighe overhead line. The installation process of the 132 kV cable proved to be comparable with those of a traditional conductor of a similar size.
A report prepared by the OEM after of the installation said: “The installation of the line at high altitude (2,000 meters above sea level) is a severe test for the conductor: in fact, at low temperatures the mechanical load is transferred from the carbon core to aluminium alloy coats, determining a state of high stress for the latter.”For this 132 kV cable were used innovative new materials, in particular an alloy with high conductivity, a maximum tensile strength comparable to pure aluminium and, more importantly, a maximum strength that remains unchanged at high temperatures. With this new alloy, it was possible to delivery client'aspectations.