Elbe crossing 1
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Elbe Crossing 1 is a group of masts providing an overhead crossing of 220kV three phase AC current line across the River Elbe. Constructed between 1959 and 1962 as part of the line from Stade to Hamburg north, it consists of 4 masts:
- Each of two portal masts is a guyed mast of 50 meters height with a crossbeam at a height of 33 meters. One of these masts stands on the Schleswig-Holstein riverbank and the other on the Lower Saxony bank.
- Two identical carrying masts of 189 meters height, each weighing 330 tons, ensure the necessary passage height of 75 meters over the Elbe. One stands on the island Luehesand, the other in the Buhnenfeld on the Schleswig-Holstein side. Because of the swampy underground, each mast has a pile foundation.
The Luehesand portal mast rests on 41 stakes and on the Buhnenfeld on 57. In contrast to the usual practice in the pipe installation the eckstiele of these masts stand diagonally to the direction of the line, which brought certain savings in material. The two crossbeams for the admission of the 6 conductor cables are at a height of 166 meters and 179 meters. The mast on the Buhnenfeld carries a radar facility of the navigation management Hamburg at a height of 30 meters. Each portal mast is equipped with stairs and gangways for maintenance of flight safety beacons and with a hoist for lifting heavy loads.
Elbe crossing 1 was supplemented in the 1970s by Elbe crossing 2.
Weblinks
- http://www.structurae.net/structures/data/index.cfm?ID=s0012153
- http://www.structurae.net/structures/data/index.cfm?ID=s0010730
- http://www.structurae.net/structures/data/index.cfm?ID=s0012152
References
- "Die 380/220-kV-Elbekreuzung im 220-kV-Netz der Nordwestdeutschen Kraftwerke AG" by Hans Heino Moeller of the NWK, Hamburg