Bornholm Cable

Bornholm Cable is one of the longest submarine three phase AC cables in the world. It is a 60 kV cable interconnecting the power grids of Bornholm and Sweden. The Bornholm Cable starts at 60 kV substation Hasle (55°10′13″N 14°43′24″E / 55.17028°N 14.72333°E / 55.17028; 14.72333 (Hasle 60 kV substation)) and runs on its 1.4 kilometres as underground cable with a cross section of 400 square millimetres to the Baltic Sea, where the 43.5 kilometres long submarine cable section starts. At this section copper conductors with 240 square millimetres are used. From the landing point at Sweden it runs on a length of 700 metres as underground cable with conductors with 400 square millimetres to the cable terminal situated at 55°26′00″N 14°13′30″E / 55.43333°N 14.22500°E / 55.43333; 14.22500 (Swedish 60 kV cable terminal), where a 4.2 kilometres long 60 kV overhead line to the 132 kV/60 kV-Substation Borrby substation (55°27′05″N 14°10′00″E / 55.45139°N 14.16667°E / 55.45139; 14.16667 (Borrby Substation)) starts. At this line copper conductors with 127 square millimetres are used. Borrby substation is fed by Tomelilla substation (55°33′28″N 13°56′18″E / 55.55778°N 13.93833°E / 55.55778; 13.93833 (Tomelilla Substation)) by a 132 kV line with 2 circuits.