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Kon H.,VISCAS Corporation
Proceedings of the International Symposium on Electrical Insulating Materials | Year: 2011

VISCAS, which is a joint company of Furukawa electric co. and Fujikura Ltd. since 2001, provides several kinds of components and technologies for power transmission system such as power cable and accessories (joint and termination) including installation, diagnostic method (PD measurement, loss-current measurement and residual-charge measurement) to all of world. To supply high reliable components to worldwide customers, we also have made efforts to improve their performances by research activities. © 2011 The Institute of Electrical Engineers, Japan.

Kagoura T.,Telecommunications and Energy Laboratories | Kimura A.,Underground Power | Tateno Y.,VISCAS Corporation
Furukawa Review | Year: 2016

In the Fukushima Floating Offshore Wind Farm Demonstration Project (Fukushima FORWARD Project), which is a commissioned business from Ministry of Economy, Trade and Industry, Furukawa Electric (FEC) is in charge of a power cable transmission system. FEC have designed a riser cable which has been connected to the world's largest 7 MW class floating offshore wind turbine generator. Pursuant to the completion of the project, we are issuing this report.

Tsuchiya S.,Tokyo Electric Power Company | Iida T.,Kansai Electric Power Co. | Morishita Y.,Chubu Electric Power Co. | Nakajima T.,VISCAS Corporation | And 2 more authors.
44th International Conference on Large High Voltage Electric Systems 2012 | Year: 2012

Long-length cables have been installed in tunnels for purposes of total project cost reduction, construction period shortening and joint quantity reduction in a view point of a cable circuit reliability advancement in Japan. Recently, the long-length cable installation technology are also developed and applied for successive installation in multiple duct sections. Meanwhile, for cases in which older Oil-Filled cables are replaced with new XLPE cables, the effective use of existing narrow utility tunnels through the use of triplex type large conductor XLPE cables is being applied, and for duct applications, narrow manhole installation technology for installing XLPE cables in existing manholes is also being applied. This report introduces the technological issues involved in long-length cable installations in tunnels, ducts and means of addressing those issues, also introduces the effective use of existing infrastructure through the use of triplex type large conductor cables, new joint installation technology for existing narrow manholes, and installation technology for deep vertical shafts.

Viscas Corporation, Furukawa Electric Group and Fujikura Ltd | Date: 2010-10-05

A power cable termination for aerial connection houses an end of a power cable and a conductor extension rod connected to an end of a conductor of the cable in a bushing. The bushing is filled with an insulating filler. The insulating filler is composed of any one of: (1) a mixture of a silicone oil and a silicone rubber; (2) a mixture of a silicone oil and a silicone gel; and (3) a mixture of silicone oil, a silicone rubber and a silicone gel.

Tateno Y.,VISCAS Corporation | Tomikuda K.,VISCAS Corporation | Tominaga Y.,VISCAS Corporation | Horiguchi N.,VISCAS Corporation | And 3 more authors.
Furukawa Review | Year: 2013

Furukawa Electric Company (FEC) has proceeded with a Fukushima FORWARD Project (FF project) as one of the commissioning manufacturers of the Ministry of Economy, Trade and Industry. The Ministry has a plan of a floating wind turbine development for a powerful choice of renewable energies in Japan, which has the 6th largest exclusive economic zone (EEZ) in the world. Companies representing Japan entered into a consortium in which FEC is responsible of a transmission system. This paper reports the development condition of the power transmission system, mainly the development of a high voltage dynamic cable, which is considered as an essential technology. A behavior of dynamic cables subjected to under-water rolling caused by the steadily wave movement is different from that of the static submarine cables. Therefore a development point is the improvement of a fatigue withstands property. For a practical application of riser cables, a target is to achieve the similar endurance life of a floating body or of a windmill.

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