Replacement HV wires installed at Vattenfall’s Letsi project in the north of the country [Image: NKT]
NKT has completed a high-voltage power cable replacement for Vattenfall at the Letsi hydropower plant in Sweden.
The cable company was awarded the turnkey replacement project for the cable system to design, produce and install the new 400kV AC single-core XLPE wires with a power rating of 486MW.
NKT said the work was done in several stages from draining the oil filled legacy power cables and removing the old terminations, pulling the underground power cable and connecting it to a new transformer.
The replacement work had challenges due to the nature of the physical environment in northern Sweden, it added.
NKT head of service and installation Axel Barnekow-Widmark said: “It has been a pleasure to continue our collaboration with Vattenfall to prepare the Letsi plant to produce renewable energy for more decades to come.
“This project once again shows our position as a key player in ensuring the transition to renewable energy with a strong technology base and a very experienced organization supporting our clients in connecting a greener world.”
Vattenfall project manager Robert Falk said: “We knew that the cabling in our underground installations would be a complex task that required careful preparation.
“Throughout the project, NKT has been extremely professional, taking every precaution to ensure the quality of their delivery.
“We have been very satisfied with NKT’s delivery and their open and responsive approach to unpredicted challenges.”
