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Home > Press Release > 2014 > March 17

Subcontract of 500 kV DC MI Submarine Cable for European Market

March 17, 2014
Sumitomo Electric Industries, Ltd.

Sumitomo Electric Industries, Ltd. has been awarded a subcontract of DC mass impregnated paper insulated submarine cable*1 from Prysmian Group for power link between Montenegro and Italy (MON.ITA project).

MON.ITA project is planned by Terna Rete Italia S.p.A. for installation of a new submarine power link between Montenegro and Italy, and involves two poles of the interconnection (about 415 km of submarine route covering depths of up to 1,200 m) made of an extra high voltage DC (500 kV) submarine cable system with a rated power of 500 MW per pole (1,000 MW per two poles). This new link will promote and facilitate the development of the next generation power interconnections among European countries (the Supergrid*2 ). Prysmian Group has been awarded one pole from Terna Rete Italia S.p.A., a company entirely owned by Terna S.p.A.

In January 2014, Prysmian Group placed an order to Sumitomo Electric to supply 115 km of extra high voltage DC (500 kV) submarine cable with mass impregnated paper insulation to complete MON.ITA project on time. The cable will be manufactured in Sumitomo Electric’s Osaka Works.

Sumitomo Electric would like to be a player or a partner with stake holders and concerned parties for the construction of the international transmission network.

*1 MI Cable (Mass Impregnated Paper Insulated Cable)

Using mass impregnated paper insulation (high viscosity oil impregnated in kraft paper), longer distance power transmission is made available and achievable because oil feeding equipment which is mandatory for oil filled cable systems is not needed.

*2 The Supergrid

The Supergrid is defined as “a pan-European transmission network facilitating the integration of large-scale renewable energy and the balancing and transportation of electricity with the aim of improving the European market”.
(Website of “Friends of the Supergrid”:

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