Self-deicing lightweight conductor

Patent metadata

Field	Value
Publication number	US-9941080-B2
Application number	US-201414780591-A
Country	US
Kind code	B2
Filing date	Mar 27, 2014
Priority date	Mar 28, 2013
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

The invention relates to a conductor ( 2 ) for electrical equipment, the conductor comprising at least one hollow section member ( 2 ) of electrically conductive material that is elongate along a longitudinal axis (Y), the conductor having an outside surface in which at least a portion forms corrugations ( 23, 24 ) in a plane perpendicular to the longitudinal axis. The conductor may advantageously form a movable contact (blade) ( 2 ) of a high voltage disconnector.

First claim

The invention claimed is:

1. A high voltage electrical equipment including at least one conductor and at least one electrical contact configured to contact said conductor,
the conductor comprising at least one hollow section member of electrically conductive material that is elongated along a longitudinal axis, the conductor having an outside surface in which at least a portion forms corrugations in a plane perpendicular to said longitudinal axis, the conductor including at least one lateral projection extending beyond the outside surface of the conductor in said plane perpendicular to the longitudinal axis,
wherein each lateral projection has an outside surface with a portion provided with corrugations in the plane perpendicular to said longitudinal axis.

2. The high voltage electrical equipment according to claim 1 , wherein the corrugations form fluting or grooves in the outside surface of said conductor that extend in a direction parallel to the longitudinal axis.

3. The high voltage electrical equipment according to claim 1 , wherein the at least one electrical contact element is configured for coming into contact with a distinct electrical contact in order to provide an electrical connection.

4. The high voltage electrical equipment according to claim 1 , wherein each lateral projection has an outside surface with a portion that is plane.

5. The high voltage electrical equipment according to claim 1 , wherein each lateral projection is provided with a part for providing an electrical contact.

6. The high voltage electrical equipment according to claim 1 , wherein said outside surface of said conductor is provided with corrugations that are simple and/or complex.

7. The conductor according to claim 6 , wherein the corrugations have a fractal geometry.

8. The high voltage electrical equipment according to claim 1 , wherein said at least one hollow section member is formed by extrusion.

9. The high voltage electrical equipment according to claim 1 , wherein said at least one hollow section member is made of aluminum or copper or copper alloy.

10. The high voltage electrical equipment according to claim 1 , further comprising a pivot hinge at one end of the conductor.

11. A high voltage disconnector including the high voltage electrical equipment according to claim 10 wherein the conductor is mounted by pivotal hinging on an insulating support, wherein said conductor contacts the at least one electrical contact by a pivoting movement.

12. The high voltage electrical equipment according to claim 1 , further comprising at least one lateral reinforcement.

13. The high voltage electrical equipment according to claim 1 , wherein the at least one electrical contact has a plurality of separate contacts that contacts a common lateral portion of said conductor.

14. The high voltage electrical equipment according to claim 1 , wherein said conductor is stationary and said electrical contact is a movable contact.

15. The high voltage electrical equipment according to claim 1 , wherein said conductor is movable and said electrical contact is a stationary contact.

16. The electrical equipment according to claim 15 , wherein said electrical contact is U-shaped.

17. A high voltage disconnector including the high voltage electrical equipment according to claim 1 .

18. An operating method for operating the high voltage electrical equipment according to claim 1 , comprising a step of:
inducing current flow between opposite ends of the conductor wherein a Joule effect is created in walls of the conductor.

19. The operating method according to claim 18 , wherein the conductor is configured to melt ice and/or snow accumulated in the corrugations of the conductor.

20. A high voltage electrical equipment including at least one conductor and at least one electrical contact configured to contact said conductor, the conductor comprising:
at least one hollow section member of electrically conductive material that is elongated along a longitudinal axis, the conductor having an outside surface in which at least a portion forms corrugations in a plane perpendicular to said longitudinal axis,
wherein said conductor is movable and said electrical contact is a stationary contact, and
said electrical contact being U-shaped wherein each branch of the U-shaped electrical contact includes at least one stationary contact extended by a tab folded inwards so as to be substantially parallel to the branch of the U-shaped electrical contact from which the tab extends, said tab configured to come into mechanical contact with at least one contact element of the movable conductor.

21. The high voltage electrical equipment according to claim 20 , wherein return elements are interposed between the tab and the branch of the U-shaped electrical contact from which the tab extends, in order to urge the tab inwards towards the movable conductor when the movable conductor is in contact with the stationary contact.

Assignees

• Alstom Technology Ltd
• Alstom Technology Ltd

Inventors

• Demissy Daniel
• Babin Pascal
• Leger Martin
• Rollier Clément
• Kechroud Riyad

Classifications

• H01H31/28 Primary

  with angularly-movable contact · CPC title

• H01H1/42

  Knife-and-clip contacts · CPC title

• H01H31/026

  Movable parts and contacts mounted thereon · CPC title

• H01H2205/002

  fixed to operating part · CPC title