Mettlen–Lavorgo powerline
380 kV overhead power line in Switzerland
The Mettlen–Lavorgo powerline, also called the Lukmanier powerline, is the 400 kV three-phase alternating current high voltage electric power transmission line over the Lukmanier Pass in Switzerland, from Mettlen substation (47°6′55″N 8°20′15″E), next Inwil, about 7-kilometre (4.3 mi) south of Hochdorf, to Lavorgo substation (46°26′28″N 8°50′20″E), next Lavorgo, about 5-kilometre (3.1 mi) south of Faido. Trees falling on the line in 2003 caused a major blackout in Italy.
History
The powerline was built in 1948–1949. In 2006, 17 transmission towers between Sisikon and Ingenbohl and in 2008, 28 transmission towers between Arth and Küssnacht am Rigi were replaced.
On 28 September 2003, during a storm, two trees hit the powerline in Brunnen, causing a major blackout in Italy.
The loss of power affected most of all peninsula; nearly 50 million people remained cut-off for up to 18 hours.
Description
On the 52-kilometre (32 mi) long section from Mettlen to Amsteg it shares the pylons with the Gotthard Powerline. After Amsteg the Lukmanier Powerline runs on its own track.
On the section between Mettlen and Amsteg 160 pylons are used with two level and three level arrangements of the conductors. For the 53-kilometre (33 mi) long section between Amsteg and Lavorgo over the Lukmanier Pass 145 pylons for one circuit with one level arrangement of the three conductors are used.
The public source identifies “Mettlen–Lavorgo powerline” as 380 kV overhead power line in Switzerland. This brief keeps that definition visible, then builds a research path around Mettlen, Lavorgo and powerline.
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This entry incorporates text from “Mettlen–Lavorgo powerline” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.