Low voltage power conductor and system

Patent metadata

Field	Value
Publication number	US-11145434-B2
Application number	US-202016868409-A
Country	US
Kind code	B2
Filing date	May 6, 2020
Priority date	May 8, 2019
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

A low voltage power conductor can include a plurality of copper-clad aluminum wires braided into a power braid. The low voltage power conductor may be configured for use in a power distribution system for distributing power from an electrical grid, and can be attached to the transformer and the power distribution module at single respective attachment points. A low voltage power distribution system can include a low voltage power conductor and a clamp that includes a clamp body and a clamp spacer. Legs of the clamp spacer can be configured to limit deformation of the low voltage power conductor upon compression of the low voltage power conductor by the clamp.

First claim

What is claimed is:

1. A low voltage power distribution system to supply power from a transformer to a power distribution module via a conductive palm, the low voltage power distribution system comprising:
a low voltage power conductor that includes a plurality of copper-clad aluminum wires that are braided into a power braid; and
a clamp that includes a clamp body and a clamp spacer, the clamp spacer including a base portion and at least two legs extending from opposing sides of the base portion;
the clamp securing the power braid to the conductive palm with the base portion of the clamp spacer interposed between the power braid and the conductive palm and with the at least two legs extending to opposing sides of the power braid to limit deformation of the power braid upon compression of the power braid by the clamp.

2. The low voltage power distribution system of claim 1 , wherein the plurality of copper-clad aluminum wires are grouped into wire bundles, and
wherein the wire bundles are braided together to form the power braid.

3. The low voltage power distribution system of claim 1 , wherein a wire diameter of each of the copper-clad aluminum wires is between 0.05 millimeters and 3 millimeters.

4. The low voltage power distribution system of claim 1 , wherein a cross-sectional profile of the power braid is oblong.

5. The low voltage power distribution system of claim 1 , wherein a cross-sectional area of the power braid is between 25 square millimeters and 3000 square millimeters.

6. The low voltage power distribution system of claim 1 , wherein the copper-clad aluminum wires are coated in a layer of tin.

7. The low voltage power distribution system of claim 1 , wherein the power braid is wrapped in an insulating sheath having an insulation thickness;
wherein the base portion of the clamp spacer contacts the power braid over an exposed portion of the power braid adjacent to the insulating sheath; and
wherein a thickness of the base portion is substantially equal to or greater than the insulation thickness.

8. The low voltage power distribution system of claim 7 , wherein the insulating sheath overlaps with the conductive palm adjacent to the clamp spacer.

9. The lower voltage power distribution system of claim 1 , wherein the low voltage power conductor is a first low voltage power conductor formed as a first power braid and the clamp spacer is a first clamp spacer;
wherein the low voltage power distribution system further comprises a second low voltage power conductor that includes a plurality of copper-clad aluminum wires that are braided into a second power braid;
wherein the clamp further includes a second clamp spacer including a base portion and at least two legs extending from opposing sides of the base portion; and
wherein the clamp secures the first and second power braids on opposing sides of the conductive palm, with the base portions of the first and second clamp spacers interposed between the conductive palm and the first and second power braids, respectively, and with the at least two legs of the first and second clamp spacers extending in opposite directions along opposing sides of the first and second power braids, respectively, to limit deformation of the first and second power braids upon compression of the first and second power braids by the clamp.

10. The low voltage power distribution system of claim 1 , wherein the power braid is up to 70 meters long.

11. The low voltage power distribution system of claim 1 , wherein a current-carrying capacity of the power braid is between 25 amperes and 5000 amperes.

12. A method of transferring electrical power between electrical modules, the method comprising:
providing a low voltage power conductor;
arranging a clamp spacer between the low voltage power conductor and a conductive contact of one of the electrical modules, with a base portion of the clamp spacer in contact with the low voltage power conductor to provide an electrical connection between the low voltage power conductor and the conductive contact, and with at least two legs of the clamp spacer extending from opposing sides of the base portion, away from the conductive contact, along opposing sides of the low voltage power conductor; and
clamping the low voltage power conductor to the conductive contact, with the at least two legs of the clamp spacer limiting deformation of the low voltage power conductor upon compression of the low voltage power conductor by the clamping operation.

13. The method of claim 12 , wherein the low voltage power conductor includes an insulating sheath having an insulation thickness;
wherein the base portion of the clamp spacer is arranged to contact the low voltage power conductor over an exposed portion of the low voltage power conductor; and
wherein a thickness of the base portion is substantially equal to or greater than the insulation thickness.

14. The method of claim 13 , wherein the low voltage power conductor is arranged so that the insulating sheath overlaps with the conductive contact adjacent to the clamp spacer.

15. The method of claim 12 , wherein the low voltage power conductor includes a plurality of copper-clad aluminum wires that are braided into a power braid.

16. The method of claim 15 , wherein the power braid has an oblong profile in cross-section, and the at least two legs are arranged to extend along short sides of the oblong profile.

17. The method of claim 12 , wherein the low voltage power conductor is a first low voltage power conductor and the clamp spacer is a first clamp spacer, the method further comprising:
providing a second low voltage power conductor;
arranging a second clamp spacer to provide electrical conduction between the second low voltage power conductor and the conductive contact, with a base portion of the second clamp spacer in contact with the second low voltage power conductor between the second low voltage power conductor and the conductive contact, on an opposite side of the conductive contact from the first low voltage power conductor and the first clamp spacer, and with at least two legs of the second clamp spacer extending from opposing sides of the base portion along opposing sides of the second low voltage power conductor; and
clamping the second low voltage power conductor to the conductive contact, with the at least two legs of the second clamp spacer limiting deformation of the second low voltage power conductor upon compression of the second low voltage power conductor by the clamping operation.

18. The method of claim 17 , wherein clamping the first and second low voltage power conductors includes tightening a single clamp to collectively secure the first and second low voltage power conductors to the conductive contact.

19. A low voltage power distribution system to supply power between electrical modules via a conductive contact of one of the electrical modules, for use with a low voltage power conductor, the low voltage power distribution system comprising:
a clamp that includes a clamp body and a clamp spacer;
the clamp spacer being formed as an single, integral conductive component that includes a base portion and at least two legs that extend from two opposing sides of the base portion;
the base portion being configured to provide electrical conduction between the low voltage power conductor and the conductive contact, with the legs extending away from the conductive contact along opposing sides of the low voltage power conductor to limit deformation of the low voltage power conductor upon compression of

Assignees

• Erico Int Corp

Inventors

• Godard Pascal
• Bizet Frederic

Classifications

• H01B9/006

  Constructional features relating to the conductors · CPC title

• H01B7/08 Primary

  Flat or ribbon cables · CPC title

• H01R13/5812

  the cable clamping being achieved by mounting the separate part on the housing of the coupling device · CPC title

• H01B1/023

  Alloys based on aluminium · CPC title

• H01B7/228 Primary

  Metal braid · CPC title