System and method for operating an electrical switch

Patent metadata

Field	Value
Publication number	US-11545321-B2
Application number	US-202117218988-A
Country	US
Kind code	B2
Filing date	Mar 31, 2021
Priority date	Mar 31, 2020
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A switch including a first electrical terminal, the first electrical terminal including a blade pivotable between an open position and a closed position, and a rod extending from the first electrical terminal parallel to the blade. The switch further includes a second electrical terminal configured to receive the blade when in the closed position, the second electrical terminal including a vacuum interrupter, wherein the vacuum interrupter engages the rod when in the closed position. Rotating the first electrical terminal in a first direction causes the blade to disengage from the second electrical terminal at a first point, and further rotating the first electrical terminal in the first direction causes the rod to disengage from the vacuum interrupter at a second point.

First claim

What is claimed is:

1. A switch comprising:
a first electrical terminal, the first electrical terminal including a blade pivotable between an open position and a closed position, and a rod extending from the first electrical terminal; and
a second electrical terminal configured to receive the blade when in the closed position, the second electrical terminal including a vacuum interrupter, wherein the vacuum interrupter engages the rod when in the closed position;
wherein rotating the first electrical terminal in a first direction causes the blade to disengage from the second electrical terminal at a first point, and wherein further rotating the first electrical terminal in the first direction causes the rod to disengage from the vacuum interrupter at a second point.

2. The switch of claim 1 , wherein arcing is prevented when entering the closed position.

3. The switch of claim 1 , wherein, when in an open position, rotating the first electrical terminal in a second direction causes the vacuum interrupter to engage the rod at the second point, and wherein further rotating the first electrical terminal in the second direction causes the blade to engage the second electrical terminal at the first point.

4. The switch of claim 3 , wherein arcing occurs only within the vacuum interrupter when the vacuum interrupter engages the rod at the second point.

5. The switch of claim 1 , wherein an electrical arc is extinguished prior to the rod disengaging from the vacuum interrupter at the second point.

6. The switch of claim 1 , wherein when rotating the first electrical terminal in a clockwise direction, the rod causes the vacuum interrupter to rotate in a counter-clockwise direction.

7. The switch of claim 1 , wherein the rod is a biased.

8. The switch of claim 1 , wherein the rod includes a first receiving portion and a second receiving portion extending from the first receiving portion.

9. The switch of claim 8 , wherein the second receiving portion is angled such that the second receiving portion extends in an axis different from the first receiving portion.

10. The switch of claim 1 , wherein the blade moves in a first plane, and the rod moves in a second plane different than the first plane.

11. The switch of claim 1 , wherein the vacuum interrupter includes a latch configured to receive the rod.

12. The switch of claim 1 , wherein the rod includes a first portion with a first end extending from the first electrical terminal, and a second portion extending perpendicularly from the first portion at a second end.

13. The switch of claim 12 , wherein the second portion is configured to connect to the vacuum interrupter.

14. The switch of claim 1 , wherein the vacuum interrupter includes a vacuum interrupter rod configured to engage a rod receiving portion of the rod.

15. A method for operating a switch, the method comprising:
rotating a first electrical terminal in a first direction to a first position, wherein a blade connected to the first electrical terminal disengages a second electrical terminal at the first position;
rotating the first electrical terminal in the first direction and to a second position, wherein a rod connected to the first electrical terminal disengages a vacuum interrupter connected to the second electrical terminal at the second position; and
rotating the first electrical terminal in the first direction and to a third position.

16. The method of claim 15 , further comprising:
when in an open position, rotating the first electrical terminal in a second direction to the second position, wherein the rod connected to the first electrical terminal engages the vacuum interrupter connected to the second electrical terminal at the second position; and
rotating the first electrical terminal in the second direction and to the first position, wherein the blade connected to the first electrical terminal engages the second electrical terminal at the first position;
wherein arcing is prevented when entering the first position.

Assignees

• Hubbell Inc

Inventors

• Rhein David Adelbert
• Dinh Cong Thanh

Classifications

• H01H33/66

  Vacuum switches · CPC title

• H01H33/6661

  Combination with other type of switch, e.g. for load break switches (H01H33/143, H01H33/6662 take precedence) · CPC title

• H01H33/025 Primary

  Terminal arrangements (for vacuum switches H01H33/6606) · CPC title

• H01H33/128

  being operated by a separate mechanism interlocked with the sectionalising mechanism · CPC title

• H01H33/126 Primary

  being operated by the distal end of a sectionalising contact arm · CPC title