Surge arrester comprising traction elements maintained by loops

Patent metadata

Field	Value
Publication number	US-9728308-B2
Application number	US-201314417210-A
Country	US
Kind code	B2
Filing date	Jun 12, 2013
Priority date	Jul 26, 2012
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A surge arrester has several tensioning elements which brace the discharge column in the axial direction. One or more loop arrangements radially surround the tensioning elements. One loop arrangement has a plurality of loops. Each loop of the plurality of loops surrounds only some, but not all, of the tensioning elements.

First claim

The invention claimed is:

1. A surge arrester, comprising:
an arrester column formed of a plurality of varistor elements;
a plurality of tensioning elements bracing said arrester column in an axial direction;
one or more loop arrangements each looping radially around said tensioning elements, each said loop arrangement having a plurality of loops and each loop of said plurality of loops looping around only some of said tensioning elements.

2. The surge arrester according to claim 1 , which comprises a guide element inserted into said arrester column at an axial height of a loop arrangement, said guide element having guide grooves formed therein, and wherein said loops are guided in said guide grooves in direct connection between the respective said tensioning elements around which said loops are looped.

3. The surge arrester according to claim 1 , wherein said plurality of tensioning elements are an even number of tensioning elements, and each of said loops loops around exactly two mutually opposite tensioning elements.

4. The surge arrester according to claim 2 , wherein said guide element has an upper covering surface and a lower covering surface each formed with said guide grooves, wherein said guide grooves in said upper covering surface extend at right angles to said guide grooves in said lower covering surface.

5. The surge arrester according to claim 1 , wherein said loops are formed of a glass-fiber-reinforced plastic.

6. The surge arrester according to claim 1 , wherein said guide element is formed of an electrically conductive material.

Assignees

• Siemens Ag

Inventors

• Springborn Dirk
• Sulitze Markus

Classifications

• H01C7/18

  comprising a plurality of layers stacked between terminals · CPC title

• H01C7/10

  voltage responsive, i.e. varistors · CPC title

• H01C7/12 Primary

  Overvoltage protection resistors; Arresters · CPC title