Electrical busway splice connector

• US 9,698,548 B2
• Filed: 10/30/2015
• Issued: 07/04/2017
• Est. Priority Date: 07/31/2014
• Status: Active Grant

• Current Assignee: Power Distribution Incorporated (Eaton Corporation PLC.)
• Original Assignee: Power Distribution Incorporated (Eaton Corporation PLC.)
• Inventors: Folk, Isaac, Jaena, Mario L., Gulkarov, Vladimir
• Primary Examiner(s): PATEL, HARSHAD C
• Application Number:
  US14/928,795
• Publication Number:
  US 20160049759A1
• Time in Patent Office: 613 Days
• Field of Search: 439110, 439719, 439121, 439213, 439507, 439509, 439113, 174 72 B, 174 88 B
• CPC Class Codes: H01R 13/187 with spring member in the socket
• CPC Class Codes: H01R 25/145 Details, e.g. end pieces or joints H01R25/147 takes precedence
• CPC Class Codes: H01R 25/162 Electrical connections between or with rails or bus-bars rails having primarily a non electrical function H01R4/64
• CPC Class Codes: H01R 4/4881 using a louver type spring
• CPC Class Codes: H02G 5/007 Butt joining of bus-bars by means of a common bolt, e.g. splice joint electrically conductive connections characterised by contacting members H01R4/58
• CPC Class Codes: H02G 5/06 Totally-enclosed installations, e.g. in metal casings
• CPC Class Codes: H02G 5/10 Cooling

Abstract

A splice connector for a busway system utilizes individual connectors made of a conductive material and having a u-shaped cross-section that fit over ends of a pair of busbars to be connected to each other, and within which are mounted multi-contact louvers that extend the length of the connectors to establish a low impedance electrical connection between the connector and the respective busbars. The louvers are secured in place by a dovetail groove that retains the louvers within the connectors and causes the individual contact sections of the louvers to bow outwardly so as to press against the busbars when the connector is fitted over the busbars. The connectors are snapped into insulative housing halves or sections that align the connectors with the busbars, and that provide isolation between horizontally aligned pairs of connectors.

Claims

1. A busway splice connector for connecting busbars together comprising:

a U-shaped connector having a first dovetail groove, a second dovetail groove and two inner surfaces that define a volume therebetween for receiving portions of two busbars to be connected together, each dovetail groove having a groove height, the first dovetail groove being formed in a first inner surface of the two inner surfaces and the second dovetail groove being formed in a second inner surface of the two inner surfaces;

a shim fitted over the U-shaped connector; and

a conductive contact having a contact height that is greater than the groove height of the first dovetail groove which causes the conductive contact to bow towards a center of the volume between the two inner surfaces when the conductive contact is received by the first groove.

2. The busway splice connector of claim 1 further comprising a second conductive contact having a contact height that is greater than the groove height of the second dovetail groove which causes the second conductive contact to bow towards the center of the volume between the two inner surfaces when the second conductive contact is received by the second groove.

3. The busway splice connector of claim 1 wherein the conductive contact includes a plurality of louvers that each bow towards the center of the volume between the two inner surfaces when the conductive contact is received by the first dovetail groove.

4. The busway splice connector of claim 1 wherein the volume defined by the two inner surfaces is configured to receive a terminal end of each of the two busbars such that the two busbars are axially aligned.

5. The busway splice connector of claim 1 further comprising:

a first housing defining a U-shaped slot having a similar size as the U-shaped connector and configured to receive the U-shaped connector;

a second housing; and

a fastener configured to be used to couple the first housing to the second housing such that the U-shaped connector is positioned within a volume defined by the first housing and the second housing when the first housing is coupled to the second housing.

6. The busway splice connector of claim 1 further comprising:

a housing defining a U-shaped slot having a greater size than the U-shaped connector and configured to receive the U-shaped connector; and

wherein the shim is configured to be coupled to the U-shaped connector such that when connected, the shim and the U-shaped connector fit within the U-shaped slot of the housing.

7. A busway splice connector for connecting busbars together comprising:

a conductive connector having a first dovetail groove, a second dovetail groove and two inner surfaces that define a volume therebetween for receiving an end of each of two busbars to be connected together in series, each dovetail groove having a groove height, the first dovetail groove being formed in a first inner surface of the two inner surfaces and the second dovetail groove being formed in a second inner surface of the two inner surfaces;

a plurality of shims fitted over the U-shaped connector; and

a conductive contact being flexible and having a contact height that is greater than the groove height of the first dovetail groove and configured to be received by the first dovetail groove such that the conductive contact bows towards a center of the volume between the two inner surfaces when the conductive contact is received by the first dovetail groove.

8. The busway splice connector of claim 7 further comprising a second conductive contact having a contact height that is greater than the groove height of the second dovetail groove which causes the second conductive contact to bow towards the center of the volume between the two inner surfaces when the second conductive contact is received by the second dovetail groove.

9. The busway splice connector of claim 7 wherein the conductive contact includes a plurality of louvers that each bow towards the center of the volume between the two inner surfaces when the conductive contact is received by the first dovetail groove.

10. The busway splice connector of claim 7 wherein the volume defined by the two inner surfaces is configured to receive a terminal end of each of the two busbars such that the two busbars are axially aligned.

11. The busway splice connector of claim 7 further comprising:

a lower housing defining a slot having a similar shape and a similar size as the conductive connector and configured to receive the conductive connector;

an upper housing; and

a fastener configured to be used to couple the upper housing to the lower housing such that the conductive connector is positioned within a cavity defined by the upper housing and the lower housing when the upper housing is coupled to the lower housing.

12. The busway splice connector of claim 7 further comprising:

a housing defining a slot having a similar shape as the conductive connector and a larger size than the conductive connector and configured to receive the conductive connector; and

wherein a respective shim of the plurality of shims is configured to be coupled to the conductive connector such that when coupled, the respective shim and the conductive connector fit snugly within the slot of the housing.

13. A busway splice connector for connecting busbars comprising:

a first conductive connector, a second conductive connector, a third conductive connector and a fourth conductive connector each having two inner surfaces that define an area therebetween for receiving a portion of two busbars;

a first housing defining a first slot having a similar shape and size as the first conductive connector and configured to receive the first conductive connector and a second slot having a similar shape and size as the second conductive connector and configured to receive the second conductive connector, the first conductive connector and the second conductive connector being insulated from each other when received by the first slot and the second slot;

a second housing configured to mate with the first housing and defining a third slot having a similar shape and size as the third conductive connector and configured to receive the third conductive connector and a fourth slot having a similar shape and size as the fourth conductive connector and configured to receive the fourth conductive connector, the third conductive connector and the fourth conductive connector being insulated from each other when received by the third slot and the fourth slot; and

an insulator configured to insulate the first conductive connector and the second conductive connector from the third conductive connector and the fourth conductive connector such that each of the first conductive connector, the second conductive connector, the third conductive connector and the fourth conductive connector are insulated from each other when the second housing is mated with the first housing.

14. The busway splice connector of claim 13 wherein the first housing includes detents or tabs extending into the first slot for resisting separation of the first conductive connector from the first housing and detents or tabs extending into the second slot and the second conductive connector for resisting separation of the second conductive connector from the first housing.

15. The busway splice connector of claim 13 further comprising four contacts each configured to be coupled to a groove of one of the two inner surfaces of each of the first conductive connector, the second conductive connector, the third conductive connector and the fourth conductive connector, each of the four contacts being compressible and configured to electrically connect the corresponding conductive connector and the two busbars.

16. The busway splice connector of claim 15 wherein the groove of the one of the two inner surfaces of each of the first conductive connector, the second conductive connector, the third conductive connector and the fourth conductive connector has a groove height and wherein each of the four contacts each has a contact height that is greater than the corresponding groove height such that each of the four contacts bows towards a center of the area between the two corresponding inner surfaces when received by the corresponding groove.

17. The busway splice connector of claim 16 wherein each of the grooves has a dovetail shape and each of the four contacts includes a plurality of louvers that each bow towards the center of the area between the two corresponding inner surfaces.

18. The busway splice connector of claim 13 further comprising a fastener configured to be used to couple the first housing to the second housing.

19. The busway splice connector of claim 13 further comprising a shim configured to be coupled to the first conductive connector and wherein the first slot is larger than the first conductive connector such that when coupled, the first conductive connector and the shim fit snugly in the corresponding slot.

20. The busway splice connector of claim 13 further comprising a first cover configured to be coupled to at least one of the first housing or the second housing and to provide physical support for at least one cable or wire.