US Patent:
20040090297, May 13, 2004
Inventors:
Gunnar Hafskjold - Drammen, NO
Nils Soelvik - Houston TX, US
International Classification:
H01F027/02
Abstract:
The present invention relates to offshore installations, and in particular to an arrangement and a method for use in installation procedures for subsea transformers. In a preferred embodiment of the invention, a central, hole or tube is included in the encapsulation enclosing the transformer which is to be installed. Three core elements of the transformer are arranged symmetrically around the hole or tube forming a triangle or a delta. In the installation process, the transformer is lowered towards a foundation placed on the sea floor wherein a guide pin is mounted. When the transformer has found its way to the foundation, the guide pin will enter the tube, and the transformer will slide down onto the guide line. The tube is terminated by a funnel shaped opening, thus making it easier not to miss the guide pin by the tube opening. The transformer is horizontally oriented by means of orientation keys localized within the tube.