Medium voltage separable insulated energized break connector

• US 7,950,939 B2
• Filed: 02/22/2007
• Issued: 05/31/2011
• Est. Priority Date: 02/22/2007
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Makal, John Mitchell, Muench, Frank John, Hughes, David Charles, Steinbrecher, Brian Todd
• Primary Examiner(s): CHUNG TRANS, XUONG MY
• Application Number:
  US11/677,703
• Publication Number:
  US 20080207022A1
• Time in Patent Office: 1,559 Days
• Field of Search: 439/181, 439183-185, 439/187, 439/921
• US Class Current: 439/181
• CPC Class Codes: H01H 33/6606 Terminal arrangements
• CPC Class Codes: H01R 13/53 Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
• CPC Class Codes: Y10S 439/921 Transformer bushing type or high voltage underground connector

Abstract

Medium voltage separable insulated connector system for power distribution systems and configured to make and break energized connections at rated voltage but in the absence of load current.

Claims

1. A separable insulated connector, comprising:

an insulation system defining an insulating housing;

a conductive ground plane extending on an outer surface of the insulating housing;

a shield housing situated within the insulating housing;

an axial passage that extends through at least a portion of the shield housing, the axial passage defining an open end of the connector;

a contact element mounted within the axial passage and spaced an axial distance from the open end,

wherein the connector connects and disconnects with another connector to make and break high voltage connections that are energized but not carrying load current, wherein, when connecting and disconnecting the connectors, the insulation system mitigates substantially all risk of flashover at the open end only when the connector is not carrying load current,

wherein the insulation system comprises continuous, uninterrupted insulation extending along an arc path between the contact element and the ground plane, the connector being devoid of any gaps in the insulation system along the arc path; and

wherein the insulation system comprises a nonconductive nosepiece, and an extension of the housing to a distal end of the connector, thereby increasing a creep distance along the insulation system.

2. The connector of claim 1, wherein the shield housing extends less than the entire axial distance between the contact and the open end.

3. The connector of claim 1, further comprising insulation extending on an interior surface of the shield housing between the contact and the open end.

4. The connector of claim 1, wherein the contact element comprises contact fingers facing the open end.

5. The connector of claim 1, wherein the contact element is fixedly mounted in the shield housing in all operating conditions.

6. The connector of claim 1, further comprising insulation that increases a track length between the contact element and the ground plane.

7. The connector of claim 1, wherein the connector includes insulation extending substantially the entire axial distance from the open end to the contact.

8. The connector of claim 1, wherein the connector is configured to make or break high voltage connections exceeding 10 kV.

9. The connector of claim 1, wherein the connector is adapted to make or break an energized electrical connection without an arc arc-ablative component.

10. The connector of claim 1, wherein the connector does not include any arc ablative components.

11. A separable insulated connector for making or breaking an energized connection in a power distribution network, the connector comprising:

a conductive shield housing having an end and an axial passage therethrough;

a contact element disposed within the conductive shield housing, recessed from the end;

an insulation system defining an insulating housing that surrounds the shield housing; and

a ground plane provided on the insulating housing;

wherein the insulation system comprises continuous, uninterrupted insulation extending along an arc path between the contact element and the ground plane, the connector being devoid of any gaps in the insulation system along the arc path;

wherein the insulation system comprises a nonconductive nosepiece and an extension of the housing to a distal end of the connector, thereby increasing a creep distance along the insulation system;

wherein the connector is separable from another connector to break voltage connections that are not carrying load current, but the connector is configured for safe disconnection from the other connector only when the voltage connections are not carrying load current.

12. The connector of claim 11, wherein the nosepiece projecting beyond the end of the shield housing, thereby increasing a track length along a path extending from the contact to the ground plane.

13. The connector of claim 11, wherein the nosepiece overlapping an interior surface of the shield housing between the contact element and the end of the shield housing.

14. The connector of claim 11, wherein the contact element is fixedly mounted in the shield housing in all operating conditions.

15. The connector of claim 11, wherein the connector has a current rating above 200 A.

16. The connector of claim 11, wherein the connector is configured to make or break high voltage connections exceeding 10 kV.

17. The connector of claim 11, wherein the connector is adapted to make or break an electrical connection without an arc arc-ablative component.

18. The connector of claim 11, wherein the connector does not include any arc ablative components.

20. The connector of claim 11, wherein the nosepiece projecting beyond the end of the shield housing, thereby increasing a track length along a path extending from the contact to the ground plane.

21. The connector of claim 11, wherein the nosepiece overlapping an interior surface of the shield housing between the contact element and the end of the shield housing.

26. The connector of claim 20, wherein the connector does not include any arc ablative components.

19. A separable insulated connector to make or break a medium voltage connection with a male contact of a mating connector in a power distribution network, the separable connector comprising:

a conductive shield housing having an axial passage therethrough;

a contact disposed within the conductive shield;

an insulation system defining an insulating housing that surrounds the shield housing;

a ground plane provided on an outer surface of the insulating housing,

wherein the insulation system is configured to prevent instances of flashover when energized connections at rated voltage, but in the absence of load current, are made and broken, the insulation system comprising continuous, uninterrupted insulation along an arc path between the contact element and the ground plane the connector being devoid of any gaps in the insulation system along the arc path, wherein the connector is configured for safely connecting and disconnecting with another connector to make and break high voltage connections only when the connector is not carrying load current; and

wherein the insulation system comprises a nonconductive nosepiece and an extension of the housing to a distal end of the connector, thereby increasing a creep distance along the insulation system.

22. The connector of claim 19, wherein the contact element is fixedly mounted in the shield housing in all operating conditions.

23. The connector of claim 19, wherein the connector is configured to make or break high voltage connections exceeding 10 kV.

24. The connector of claim 19, wherein the connector has a current rating above 200 A.

25. The connector of claim 19, wherein the connector is adapted to make or break an electrical connection without an arc arc-ablative component.