Ausschreibungen

It has been decided that the current 66 kV network though Lofoten shall be upgraded to a 132 kV network due to the old network reaching its technical lifetime and a lack of transferring capacity and redundancy. The licence application for the voltage upgrade was sent to the Norwegian Water Resources and Energy Directorate (NVE) in spring 2014. The wanted system involves an approx. 101 km long aerial cable with submarine cables over Gimsøystraumen, Nappstraumen and Flakstadpollen, as well as new transformer stations in Kvitfossen and Svolvær in addition to upgrades to Kleppstad transformer station. The submarine cables' total length is calculated to approx. 12,4 km divided between 3 stretches, as well as spare cable: — From Kleppstad in Vågan municipality to Bustrandvik in Vestvavågøy municipality, approx. 7,3 km. — From Flæsa in Vestvågøy municipality to Napp in Flakstad municipality, approx. 2,6 km. — From Vareide (Vollan) to Midsundstad, both in Flakstad municipality, approx. 1,5 km. — 1 km spare cable, delivered to Lofotkraft's stores in Storeidøy. The cable can be directly wound here over an existing fixed motorised drum. A route survey has not been carried out, but this shall be done in the project. The cable lengths can, thus, vary somewhat as regards the stated lengths. This will be corrected after the route surveys have been carried out. The project also involves securing the cables in all land abutments, as well as flushing (0,7 m) down to approx. 30 m depth. The cables shall also be terminated in the existing cable end masts or connected to earth cables. This involves adding end muffs to the cables and taking them up in the cable end masts where they exist, and joined to existing earth cables where they exist.

Submarine cable 132 kV voltage upgrading Kvitfossen — Solbjørn

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