Patent · US Active

Voltage-limiting composition

US9424967B2 · kind B2 · utility

3Cited by

5References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Gröppel · Erlangen, DE
Steffen Lang · Hallerndorf, DE

Key dates

Filing date	Jul 13, 2012
Grant date	Aug 23, 2016
Priority date	—
Expiry date	Jul 13, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH01C7/112
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A varistor, or voltage-limiting composition has a polymer matrix and a particulate filler containing a partially conductive material applied to an electrically non-conductive carrier material. The carrier material has a lower density than the partially conductive material, so that the settling rate of the filler in the polymer matrix is reduced. The voltage-limiting composition can therefore also be used as a lacquer or for prepreg materials. A body which acts as a varistor may be produced using a composition of this kind by a method that includes annealing. The varistor may be used for surge arresters, in particular in medium-voltage systems, low-voltage systems, cable connections and cable fasteners.

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