Nexans replaces 50-year old medium high voltage cable in Königssee with a modern XLPE-insulated submarine cable

Hannover, November 9, 2007 – Nexans Deutschland Industries GmbH & Co. KG, Hanover has received a special type of order from the Bayerische Verwaltung der Staatlichen Schlösser, Gärten und Seen [Bavarian council for state castles, gardens and lakes]: in November the cable experts are to replace an exactly 50-year old PVC-insulated medium high voltage cable in Königssee with a new 20-kV submarine cable (3 x 35 mm²) with XLPE  insulation and round-wire reinforcement. The replacement be-came necessary as a result of the increased electricity requirement on the St. Bar-tholomä peninsula, since the St. Bartholomä pilgrimage chapel and the historic inn located inside the former hunting lodge attract more visitors today than ever before. In order to provide the tourist attraction with sufficient electricity from Königssee, the new cable’s cross-section is approximately three times as large as that of its predecessor, thus providing reserves for the future. If the old cable, laid 50 years ago by Kabel-und Metallwerke Neumeyer, which is now part of Nexans, had not  reached the limits of its capacity, it could have remained in service for a number of years.


From a swimming lake monster to electricity source in only a few days

The laying of the new cable may put imaginative observers in mind of the Loch Ness monster: before the new 5,500 metre-long medium high voltage cable is allowed to sink to the bottom of the lake, it is laid as a swimming cable. As a result, from 8 No-vember, a slim, black snake will move towards St. Bartholomä. Once it has arrived there, it will be lowered to the bottom of the lake within 72 hours, after which the con-nection will be made.


Logistical achievement: 65-ton freight was delivered in one piece


The submarine cable caused a stir even before its first contact with the water: it was transported in one piece on a steel pallet from Hanover to Königssee, producing a freight weighing 65 tons. Spectators lined sections of country road along the route to witness the sight of the heavy and overhanging load.
All installation and test work is expected to be concluded by the end of November. Until then, the 50-year old cable will continue to supply the peninsula. The material used for its VPE-insulated successor is also designed to ensure that ST. Bartholomä continues to be supplied with electricity for 50 years or more.

Related Document

About Nexans

With energy as the basis of its development, Nexans, the worldwide leader in the cable industry, offers an extensive range of cables and cabling systems. The Group is a global player in the infrastructure, industry and building markets. Nexans addresses a series of market segments from energy, transport and telecom networks to shipbuilding, oil and gas, nuclear, automotive, electronics, aeronautics, handling and automation. With an industrial presence in more than 30 countries and commercial activities worldwide, Nexans employs 21,000 people and had sales in 2006 of 7.5 billion euros. Nexans is listed on the Paris stock exchange, compartment A of the Eurolist of Euronext. More information on www.nexans.com