The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2001
Filed:
Jun. 21, 1999
Yuri Iossel, Helsinki, FI;
Grigory Kazarov, Espoo, FI;
Veijo Koski, Espoo, FI;
Alexey Poliakov, Helsinki, FI;
Heiko Gebhardt, Keispelt, FI;
Asea Brown Boveri AB, Vasteras, SE;
Abstract
A sea electrode (,) for grounding of a high voltage direct current transmission system comprises an electrically conducting electrode body (,) for connection to the transmission system and at least one ballast (,) located above the electrode. The electrode further comprises a layer (,) of an electrically non-conducting material, located above the electrode body and extending over it, so as to influence the maximum electrical field strength not to exceed a desired level at a point (P) at the edge of the non-conducting layer and thereby also in the sea water outside a zone (,) located below the non-conducting layer and in a vertical direction limited by the edge of the non-conducting layer.