Support device of an active part of a current transformer

Patent metadata

Field	Value
Publication number	US-10468173-B2
Application number	US-201515317305-A
Country	US
Kind code	B2
Filing date	May 21, 2015
Priority date	Jun 13, 2014
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A support device of an active part of a current transformer includes a plurality of insulating support legs which are composed of an electrically insulating material and which are constructed to carry the active part and to be supported on a housing base of a housing of the current transformer. A longitudinal axis of each insulating support leg forms a non-zero support angle with the direction of gravitational force or the vertical. A current transformer including a housing, an active part disposed in the housing and the support device for supporting the active part, is also provided.

First claim

The invention claimed is:

1. A support device of an active part of a current transformer, the support device comprising:
a plurality of insulating support legs composed of an electrically insulating material;
said insulating support legs being constructed to carry the active part and to be supported on a housing base of a housing of the current transformer; and
each of said insulating support legs having a longitudinal axis forming a non-zero support angle with the direction of gravitational force, said support angles being selected to permit said insulating support legs to absorb at least one of horizontal or lateral accelerations of the current transformer during transportation of the current transformer, and said insulating support legs being mirror-symmetrical to a lifting direction defined by lifting lugs of the current transformer.

2. The support device according to claim 1 , wherein:
said insulating support legs each have a base-side end facing the housing base and an active part-side end facing the active part; and
said base-side ends of each two of said insulating support legs are at a greater distance from one another than said active part-side ends of said two insulating support legs.

3. The support device according to claim 1 , wherein said plurality of insulating support legs includes precisely four insulating support legs.

4. The support device according to claim 1 , wherein the lifting direction is perpendicular to a lead tube of the current transformer.

5. A current transformer, comprising:
a housing having a housing base and lifting lugs defining a lifting direction of the current transformer;
an active part disposed in said housing; and
a support device for supporting said active part;
said support device including a plurality of insulating support legs composed of an electrically insulating material, said insulating support legs being constructed to carry the active part and to be supported on said housing base, each of said insulating support legs having a longitudinal axis forming a non-zero support angle with the direction of gravitational force, said insulating support angles being selected to permit said insulating support legs to absorb at least one of horizontal or lateral accelerations of the current transformer during transportation of the current transformer, and said insulating support legs being mirror-symmetrical to said lifting direction.

6. The current transformer according to claim 5 , wherein said insulating support legs each have a housing base side, holding devices are disposed on said housing base, and each of said holding devices fix said housing base side of a respective one of said insulating support legs to said housing base.

7. The current transformer according to claim 5 , wherein said housing has a lower housing part including said housing base and an upper housing part, and said lower housing part and said upper housing part are configured to be detachably interconnected.

8. The current transformer according to claim 5 , which further comprises a lead tube, said lifting direction being perpendicular to said lead tube.

Assignees

• Siemens Ag

Inventors

• Gaber Michael

Classifications

• H01F27/002 Primary

  Arrangements provided on the transformer facilitating its transport · CPC title

• H01F27/02

  Casings · CPC title

• H01F38/30

  Constructions · CPC title

• H01F27/06 Primary

  Mounting, supporting or suspending transformers, reactors or choke coils {not being of the signal type} · CPC title