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Owner(s) Consortium South East Asia–Middle East–Western Europe 6 ( SEA-ME-WE 6 ) is an in-progress optical fibre submarine communications cable system that would carry telecommunications between Southeast Asia , the Middle East , and Western Europe .
WACS – (West Africa Cable System) (South Africa, Namibia, Angola, the Democratic Republic of the Congo, the Republic of Congo, Cameroon, Nigeria, Togo, Ghana, Côte d'Ivoire, Cape Verde, Canary Islands, Portugal, United Kingdom)
For systems such as underground power transmission cables, evaluation of the short-term over-load capacity of the cable system requires a detailed analysis of the cable's thermal environment and an evaluation of the commercial value of the lost service life due to excess temperature rise.
This technology was developed in co-operation with SubCom, formerly a TE Connectivity company, [10] who built the cable and which also worked with Google on the Dunant and Curie cables. [11] The cable route comprises a 6,250 km stretch from New York to Widemouth Bay, Cornwall [12] and a 6,300 km route between New York and Bilbao. [13]
Repeaters are powered by a constant direct current passed down the conductor near the centre of the cable, so all repeaters in a cable are in series. Power feed equipment (PFE) is installed at the terminal stations. Typically both ends share the current generation with one end providing a positive voltage and the other a negative voltage.
The cable is predicted to cost around $300 million and is owned by the Southern Cross group of companies. [11] When finished, Southern Cross NEXT will be able to carry up to 72 terabits per second. [12] The NEXT cable will not be marketed as a stand-alone cable, but rather is designed to be an extension of the original Southern Cross network.
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The inner and outer conductors of a cable form the plates of a capacitor, and if the cable is long (on the order of tens of kilometres), this will result in a noticeable phase shift between voltage and current, thus significantly decreasing the efficiency of the transmitted power, which is a vector product of current and voltage. [4]