High-voltage insulator

Patent metadata

Field	Value
Publication number	US-9837184-B2
Application number	US-201615193166-A
Country	US
Kind code	B2
Filing date	Jun 27, 2016
Priority date	Jun 26, 2015
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A high-voltage insulator has an insulating body which is arranged around a high-voltage conductor. The high-voltage insulator has a damping chamber which at least partially engages around the insulating body and which is filled with an electrically insulating damping medium for damping an action of external mechanical force on the insulating body. A transformer bushing for routing a high-voltage conductor out of a transformer housing in an electrically insulating manner is further disclosed. The transformer bushing is characterized in that the transformer bushing contains a high-voltage insulator.

First claim

The invention claimed is:

1. A high-voltage insulator, comprising:
an insulating body for surrounding a high-voltage conductor, said insulating body containing a winding body which is composed of insulating layers and electrically conductive inserts, said electrically conductive inserts being disposed concentrically around said high-voltage conductor and being separated from one another by said insulating layers;
an electrically insulating damping medium; and
a damping chamber at least partially engaging around said insulating body and being filled with said electrically insulating damping medium for damping an action of external mechanical force on said insulating body, said damping chamber being disposed radially on an outside of said winding body.

2. The high-voltage insulator according to claim 1 , further comprising:
a first tube; and
a second tube being at a distance from said first tube, said first tube and said second tube are each disposed concentrically in relation to the high-voltage conductor and at least partially delimit said damping chamber.

3. The high-voltage insulator according to claim 2 , wherein at least one of said first tube or said second tube is produced from a plastic fiber composite material, a metal matrix composite material, a ceramic fiber composite material or a hard metal.

4. The high-voltage insulator according to claim 1 , wherein said electrically insulating damping medium has an electrical conductivity of less than 0.001 S/m.

5. The high-voltage insulator according to claim 1 , wherein said electrically insulating damping medium is a damping liquid.

6. The high-voltage insulator according to claim 5 , wherein said damping liquid is a liquid of low flammability.

7. The high-voltage insulator according to claim 1 , wherein said electrically insulating damping medium is a dry foam.

8. The high-voltage insulator according to claim 7 , wherein said dry foam is a polyurethane foam.

9. The high-voltage insulator according to claim 1 , wherein said winding body has a resin impregnation.

10. A transformer bushing for routing a high-voltage conductor out of a transformer housing in an electrically insulating manner, the transformer bushing comprising a high-voltage insulator according to claim 1 .

11. A high-voltage insulator, comprising:
a high-voltage conductor;
an insulating body surrounding said high-voltage conductor, said insulating body containing a winding body which is composed of insulating layers and electrically conductive inserts, said electrically conductive inserts being disposed concentrically around said high-voltage conductor and being separated from one another by said insulating layers;
an electrically insulating damping medium; and
a damping chamber at least partially engaging around said insulating body and being filled with said electrically insulating damping medium for damping an action of external mechanical force on said insulating body, said damping chamber being disposed radially on an outside of said winding body.

Assignees

• Siemens Ag

Inventors

• Juntermanns Paul
• Langens Achim

Classifications

• H01B17/28 Primary

  Capacitor type · CPC title

• H01B17/32

  Single insulators consisting of two or more dissimilar insulating bodies · CPC title

• H01F27/04

  Leading of conductors or axles through casings, e.g. for tap-changing arrangements · CPC title

• H01B3/30

  plastics; resins; waxes · CPC title

• H01B3/12

  ceramics · CPC title