Loadbreak electrical connector with enhanced safety probe

Patent metadata

Field	Value
Publication number	US-2020006879-A1
Application number	US-201916454549-A
Country	US
Kind code	A1
Filing date	Jun 27, 2019
Priority date	Jun 27, 2018
Publication date	Jan 2, 2020
Grant date	—

Abstract

A loadbreak electrical connector includes a connector body having first and second passages therewithin and a safety probe configured to be installed within the first passage. The safety probe includes a conductive probe body extending between first and second ends, the probe body having a probe aperture at the second end and a probe pin connected to the probe body via the probe aperture. The safety probe includes an arc quenching section located at a distal end of the probe pin and has a resistance section located between the second end of the probe body and the arc quenching section. The resistance section is made of a highly resistance material which reduces current flow through this section of the safety probe.

First claim

What is claimed is:

1 . A loadbreak electrical connector comprising:
a connector body having first and second passages therewithin; and a safety probe configured to be installed within the first passage, the safety probe including:
a probe body extending between first and second ends, the probe body having a probe aperture at the second end; and
a probe pin connected to the probe body via the probe aperture;
wherein the safety probe includes an arc quenching section located at a distal end of the probe pin and has a resistance section located between the second end of the probe body and the arc quenching section, and wherein the resistance section is formed of a high resistance material which reduces current through this section of the safety probe during make, break, or fault close operation.

2 . The loadbreak electrical connector of claim 1 , wherein the resistance section includes a resistance material molded onto the probe pin.

3 . The loadbreak electrical connector of claim 2 , wherein the resistance material is molybdenum or high-K rubber.

4 . The loadbreak electrical connector of claim 1 , wherein the arc quenching section includes an arc quenching material molded onto the probe pin.

5 . The loadbreak electrical connector of claim 1 , wherein the probe body of the safety probe is made out of copper.

6 . The loadbreak electrical connector of claim 1 , wherein the resistance section includes a resistance material in the form of a coating applied to probe.

7 . The loadbreak electrical connector of claim 1 , wherein the first and second passages extend along a horizontal axis of the connector body and a vertical axis of the connector body, respectively, such that the first and second passages are substantially perpendicular and intersect each other.

8 . The loadbreak electrical connector of claim 1 , wherein a bushing connector opening is defined at a distal end of the first passage for receiving and engaging with a bushing.

9 . The loadbreak electrical connector of claim 1 , wherein a cable connector opening is defined at a distal end of the second passage for receiving a cable therethrough.

10 . The loadbreak electrical connector of claim 1 , wherein the safety probe has a generally elongated cylindrical shape.

11 . A loadbreak electrical connector comprising:
a connector body having first and second passages therewithin; and a safety probe extending between first and second ends, the safety probe having a conductive section, an arc quenching section and a resistance section; wherein the arc quenching section is located at the second end of the safety probe, and the resistance section is located between the conductive section and the arc quenching section, and wherein the resistance section reduces current through the safety probe during make, break, or fault close operation.

12 . The loadbreak electrical connector of claim 11 , wherein the resistance section includes a resistance material molded onto the safety probe.

13 . The loadbreak electrical connector of claim 12 , wherein the resistance material is molybdenum or high-K rubber.

14 . The loadbreak electrical connector of claim 11 , wherein the arc quenching section includes an arc quenching material molded onto the probe pin.

15 . The loadbreak electrical connector of claim 11 , wherein the safety probe is made out of copper.

16 . The loadbreak electrical connector of claim 11 , wherein the first and second passages extend along a horizontal axis of the connector body and a vertical axis of the connector body, respectively, such that the first and second passages are substantially perpendicular and intersect each other.

17 . The loadbreak electrical connector of claim 11 , wherein a bushing connector opening is defined and located at a distal end of the first passage for receiving and engaging with a bushing.

18 . The loadbreak electrical connector of claim 11 , wherein a cable connector opening is defined and located at a distal end of the second passage for receiving a cable therethrough.

19 . The loadbreak electrical connector of claim 11 , wherein the safety probe has a generally elongated cylindrical shape.

20 . A method of reducing arcing during load make, break, or fault close operation comprising the steps of:
providing a safety probe in an electrical connector, the safety probe including a conductive section, a resistance section, and an arc quenching section, the resistance section being located between the conductive section and the arc quenching section; and moving the safety probe relative to an energized conductor so that contact is made with the resistance section which reduces current prior to contacting the conductive section or arc quenching section thereby reducing the risk of flashover or arcing.

Assignees

• Abb Schweiz Ag

Inventors

• Szyszko Stanley S
• Gardner Daniel L
• Longcor Iv William
• Ozdemir Elvan

Classifications

• H01R4/56

  one conductor screwing into another · CPC title

• H01R13/03 Primary

  characterised by the material, e.g. plating, or coating materials · CPC title

• H01R13/6616

  with resistor · CPC title

• H01R13/53 Primary

  Bases or cases for heavy duty; Bases or cases {for high voltage} with means for preventing corona or arcing · CPC title

• H01R13/6666

  with built-in overvoltage protection · CPC title