发明名称 A BUSHING AND A METHOD FOR PRODUCING THE SAME
摘要 <p>A bushing with a duct (6) for accommodating a conductor rod which is surrounded by an electrical field grading insulation (5) comprises a core (1) with a cylindrical shell (2) encapsulating the grading insulation (5) and a f lange (3) surrounding the said shell (2) and carrying through holes (8) distributed over its circumference for allowing the bushing to be attached to a wall (4) by bolts (12). The shell (2) and the flange (3) are in one piece and consist of an insulating matrix material, e.g., a plastic material mixed with an anorganic filier material. The through holes (8) are surrounded by essentially ring-shaped metal inserts (9) each forming an annular surface flush with the surface of the flange (3) which is in contact with the head of the bolt (12) and takes up the force exerted by the latter on the flange (3). A test tap (13) comprises a contact pin (14) which is electrically conductively connected to the outermost layer of the grading insulation (5) and surrounded by a contact ring (15) connected to every second metal insert (9) by connection wires (17) for grounding the contact pin (14) via the contact ring (15) when the test tap (13) is not in use and covered by a metal cap. The core (1) is produced by filling a mould with the liquid matrix material after components of the grading insulation (5) and other parts have been fixed in the same.</p>
申请公布号 WO2008074166(A1) 申请公布日期 2008.06.26
申请号 WO2006CH00726 申请日期 2006.12.20
申请人 ABB RESEARCH LTD;ROCKS, JENS;TILLIETTE, VINCENT;CHALIKIA, GERD;HEDLUND, ROGER;MICHAEL, GABRIEL 发明人 ROCKS, JENS;TILLIETTE, VINCENT;CHALIKIA, GERD;HEDLUND, ROGER;MICHAEL, GABRIEL
分类号 H01B17/26 主分类号 H01B17/26
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