Separable electrical connector with reduced risk of flashover

• US 8,038,457 B2
• Filed: 12/07/2010
• Issued: 10/18/2011
• Est. Priority Date: 11/14/2005
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Hughes, David Charles, Steinbrecher, Brian Todd
• Primary Examiner(s): Leon; Edwin A.
• Application Number:
  US12/961,644
• Publication Number:
  US 20110081793A1
• Time in Patent Office: 315 Days
• Field of Search: 439181-188, 439/921, 439/582, 439/507, 439/784, 439/805, 439/135, 439/148, 439/843
• US Class Current: 439/181
• CPC Class Codes: H01H 2033/6623 Details relating to the encasing or the outside layers of the vacuum switch housings
• CPC Class Codes: H01H 2033/6665 Details concerning the mounting or supporting of the individual vacuum bottles
• CPC Class Codes: H01H 33/66207 Specific housing details, e.g. sealing, soldering or brazing
• CPC Class Codes: H01H 33/666 Operating arrangements
• CPC Class Codes: H02B 13/0358 Connections to in or out conductors connectors in general H01R
• CPC Class Codes: Y10T 29/49204 Contact or terminal manufacturing

Abstract

A separable loadbreak connector system includes mating electrical connectors. At least one of the electrical connectors includes an electrically-resistive housing having a generally conically-shaped interior bore. A semiconductive insert is disposed within a portion of the interior bore and presents an inner radial surface that defines a generally conically-shaped recess. An elongated probe assembly is disposed within the housing and includes a probe and a sheath of insulative material disposed over at least a portion of a length of the probe. A portion of the sheath extends in a radially outward direction from a base of the probe. An electrically-resistive insulative layer extends from the conically-shaped interior bore, along at least a portion of the inner radial surface of the semiconductive insert. The insulative layer extends radially inwardly in overlapping engagement with a portion of the sheath.

Claims

1. A bus bar connector kit, comprising:

a plurality of interchangeable connector assemblies each comprising a solid bus bar substantially covered by a solid substantially homogenous insulation material, the insulation material at least partially surrounded by a substantially homogeneous semiconductive material, each of the plurality of interchangeable connector assemblies comprising at least one electrical connector configured to mate with a complementary electrical connector of another of the plurality of interchangeable connector assemblies,

wherein at least one of the electrical connectors of at least one of the plurality of interchangeable connector assemblies comprises

an electrically-resistive housing having a generally conically-shaped interior bore,

a semiconductive insert disposed within a portion of the interior bore, the semiconductive insert comprising an inner radial surface that defines a generally conically-shaped recess,

an elongated probe assembly disposed within the housing, the probe assembly comprising

a probe, and

a sheath of insulative material disposed over at least a portion of a length of the probe, a portion of the sheath extending in a radially outward direction from a base of the probe, and

an electrically-resistive insulative layer extending from the conically-shaped interior bore along at least a portion of the inner radial surface of the semiconductive insert and extending radially inwardly in overlapping engagement with a portion of the sheath.

2. The connector of claim 1, wherein the insulative layer extends radially inwardly in overlapping engagement with the radially outwardly extending portion of the sheath.

3. The connector of claim 1, wherein the at least one of the interchangeable connector assemblies comprises a U-shaped connector assembly comprising:

a solid straight bus bar;

a first electrical connector coupled to a first end of the bus bar, the first electrical connector extending from the bus bar in a substantially perpendicular direction; and

a second electrical connector coupled to a second end of the bus bar, the second electrical connector extending from the bus bar in the substantially perpendicular direction.

4. The connector of claim 1, wherein the at least one of the interchangeable connector assemblies comprises a T-shaped connector assembly comprising first, second, and third electrical connectors,

wherein the first and second electrical connectors are oriented in opposite directions with respect to one another, and the third electrical connector is oriented approximately 90 degrees with respect to the first and second electrical connectors.

5. A bus bar connector kit, comprising:

a plurality of interchangeable connector assemblies each comprising a solid bus bar substantially covered by a solid substantially homogenous insulation material, the insulation material at least partially surrounded by a substantially homogeneous semiconductive material, each of the plurality of interchangeable connector assemblies comprising at least one electrical connector configured to mate with a complementary electrical connector of another of the plurality of interchangeable connector assemblies,

wherein at least one of the electrical connectors of at least one of the plurality of interchangeable connector assemblies comprises

a first connector member comprising

an electrically-resistive housing having a generally conically-shaped interior bore,

a semiconductive insert disposed within a portion of the interior bore, the semiconductive insert comprising an inner radial surface that defines a generally conically-shaped recess,

an elongated probe assembly disposed within the housing, the probe assembly comprising

a probe, and

a sheath of insulative material disposed over at least a portion of a length of the probe, a portion of the sheath extending in a radially outward direction from a base of the probe, and

an electrically-resistive insulative layer extending from the conically-shaped interior bore along at least a portion of the inner radial surface of the semiconductive insert and extending radially inwardly in overlapping engagement with a portion of the sheath;

the bus bar comprising at least one oblique bend, the first connector member being electrically coupled to a first end of the bus bar such that the first connector member extends from the bus bar substantially perpendicularly; and

a second connector member electrically coupled to a second end of the bus bar, the second end being disposed opposite the first end.

6. The connector of claim 5, wherein the insulative layer extends radially inwardly in overlapping engagement with the radially outwardly extending portion of the sheath.

7. The connector of claim 5, wherein the bus bar is electrically coupled to the second connector member such that the second connector member extends from the bus bar substantially perpendicularly.