Electrical transfer switch system

Patent metadata

Field	Value
Publication number	US-9368295-B2
Application number	US-201314241451-A
Country	US
Kind code	B2
Filing date	Feb 27, 2013
Priority date	Feb 27, 2013
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A system including an automatic transfer switch configured to selectively route power from a first power source or a second power source to a load, comprising a switch configured to be moved between a first position and a second position, a first set of electrical contacts configured to route the power from the first power source when the switch is in the first position, a second set of electrical contacts configured to route the power from the second power source when the switch is in the second position, and a first arc chute housing configured to substantially enclose the first set of electrical contacts when the switch is in the first position.

First claim

What is claimed is:

1. A system, comprising:
an automatic transfer switch configured to selectively route power from a first power source or a second power source to a load, comprising:
a switch moveable between first and second positions and configured to rotate a shaft;
a first stationary electrical contact; and
a first contact support assembly, comprising:
a first contact support coupled to a first moveable electrical contact, wherein the first moveable electrical contact is configured to couple to the first stationary electrical contact when the switch is in the first position to route power from the first power source to the load;
a first pin extending through an aperture of the first contact support; and
a first link bar coupled to the shaft and the first pin and configured to enable rotational movement of the first contact support about an axis of rotation parallel to the shaft to selectively couple or decouple the first moveable electrical contact from the first stationary electrical contact;

wherein the first pin comprises a groove configured to engage with a first link bar insert of the first link bar and to limit axial movement of the in within the first contact support.

2. The system of claim 1 , wherein the first link bar is disposed within a slot formed on a top surface of the first contact support and extending through the orifice of the first contact support.

3. The system of claim 1 , wherein the link bar insert comprises a U-shape.

4. The system of claim 1 , comprising a first arc chute housing configured to substantially enclose the first moveable electrical contact and the first stationary electrical contact when the switch is in the first position.

5. The system of claim 4 , wherein the first arc chute housing, comprises a housing exterior surface configured to continuously abut an outermost exterior surface of the first contact support during rotational movement of the first contact support about the axis of rotation.

6. The system of claim 5 , wherein the housing exterior surface and the outermost exterior surface of the first contact support are arcuate.

7. The system of claim 6 , wherein the housing exterior surface is concave and the outermost exterior surface is convex.

8. The system of claim 4 , wherein the first arc chute housing comprises a plurality of blades extending between first and second interior walls of the first arc chute housing.

9. A system comprising:
an automatic transfer switch configured to selectively route power from a. first power source or a second power source to a load, comprising:
a switch configured to be moved between a first position and a second position;
a first set of electrical contacts configured to route the power from the first power source when the switch is in the first position;
a second set of electrical contacts configured to route the power from the second power source when the switch is in the second position; and
a first arc chute housing configured to substantially enclose the first set of electrical contacts when the switch is in the first position
wherein the switch is configured to rotate a shaft, and wherein the automatic transfer switch comprises:
a first contact support assembly, comprising:
a first contact support. coupled to a first moveable electrical contact of the first set of electrical contacts, wherein the first moveable electrical contact is configured to couple to a first stationary electrical contact of the first set of electrical contacts when the switch is in the first position;
a first pin extending through an aperture of the first contact sun)ort wherein the first pin comprises a groove configured to engage with a first link bar insert of the first link bar and to limit axial movement of the pin within the first contact support; and
a first link bar coupled to the shaft and the first pin and configured to enable rotational movement of the first contact support about an axis of rotation parallel to the Shaft to selectively couple or decouple the first moveable electrical contact from the first stationary electrical contact.

10. The system of claim 9 , wherein the first arc chute housing comprises a plurality of blades extending between first and second interior walls of the first arc chute housing.

11. The system of claim 10 . wherein the plurality of blades comprises at least two blades with different orientations.

12. The system of claim 9 , wherein the first arc chute housing comprises a housing exterior surface configured to continuously abut to an outermost exterior surface of the first contact support during rotational movement of the first contact support about the axis of rotation.

13. The system of claim 12 , wherein the housing exterior surface is concave and the contact exterior surface is convex.

14. The system of claim 9 , wherein the housing exterior surface comprises at least one wide arm configured to continuously abut a side wall of the contact exterior surface during rotational movement of the first contact support about the axis of rotation.

15. A system, comprising:
an automatic transfer switch configured to selectively route power from a first power source or a second power source to a load, comprising:
a switch configured to rotate a first shaft and a second shaft between respective first and second positions;
a first stationary electrical contact and a first moveable electrical contact configured to couple to one another and route the power from the first power source when the first shaft is in the first position;
a second stationary electrical contact and a second moveable electrical contact configured to couple to one another and route the power from the second power source when the second shaft is in the second position;
a first contact support assembly, comprising:
a first contact support coupled to the first moveable electrical contact;
a first pin extending through an aperture of the first contact support; and
a first link bar coupled to the first shaft and the first pin and configured to enable rotational movement of the first contact support about a first axis of rotation parallel to the first shaft to selectively couple or decouple the first moveable electrical contact from the first stationary electrical contact; and
a first arc chute housing configured to substantially enclose the first electrical moveable contact and the first stationary electrical contact when the first shaft is in the first position;
wherein the first pin comprises a groove configured to receive a first link bar insert of the first link bar and to limit axial movement of the in within the a)erture of the first contact support.

16. The system of claim 15 , wherein the first arc chute housing comprises a plurality of blades extending between first and second interior walls of the first arc chute housing.

17. The system of claim 15 , wherein the first arc chute housing comprises a housing exterior surface configured to continuously abut an outermost exterior surface of the first contact support during rotational movement of the first contact support about the first axis of rotation.

Assignees

• Feng Jifeng
• Wang Liqiang
• Gen Electric

Inventors

• Feng Jifeng
• Wang Liqiang

Classifications

• H01H2009/365

  using U-shaped plates · CPC title

• H01H9/362

  Mounting of plates in arc chamber · CPC title

• H01H2300/018

  Application transfer; between utility and emergency power supply · CPC title

• H01H9/26 Primary

  for interlocking two or more switches ({H01H13/568 takes precedence;} by a detachable member H01H9/28 {; for electromagnetic relays H01H50/323}) · CPC title

• H01H2231/052

  Selectors, e.g. dimmers · CPC title