Patent · US Active

Field-controlled composite insulator and method for producing the composite insulator

US8637769B2 · kind B2 · utility

4Cited by

6References

18Claims

0Family size

Assignee

Lapp Insulators GmbH · DE

Inventors

Heinz Denndoerfer · Selb, DE
Jens Seifert · Schrobenhausen, DE
Volker Hinrichsen · Berlin, DE

Key dates

Filing date	Aug 16, 2010
Grant date	Jan 28, 2014
Priority date	—
Expiry date	Feb 18, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49227
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A field-controlled composite insulator uses materials which are greatly stressed by an inhomogeneous distribution of an electrical field across a surface thereof. One of the causes thereof is the structural configuration of the insulator. The field strength changes particularly in a region of fittings due to a transition from insulating materials of sheds and an insulator core to a metal material, due to a transition from ground potential at cross members or to a conductor potential at that location, where conductor cables are attached. A further cause is deposits of dirt, which stress an insulator overall. A field control layer is therefore disposed between the core and the protective layer in at least one section of the insulator. The control layer includes particles as a filler, which influence the electrical field of the insulator. A method for producing the composite insulator is also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.