VACUUM CIRCUIT BREAKER UNDER HIGH PRESSURE

• US 20160240338A1
• Filed: 02/25/2016
• Published: 08/18/2016
• Est. Priority Date: 08/26/2013
• Status: Abandoned Application

• Current Assignee: ABB Technology AG (ABB Limited)
• Original Assignee: ABB Technology AG (ABB Limited)
• Inventors: Thevar, Dukkaiappan Subbiah, Bellut, Markus, Byrkjeland, Olav, Masmeier, Philipp, Futane, Pravin, Ronhovd, Tor-Odd, Dullni, Edgar, Rongve, Knut, Midtun, Paul
• Application Number:
  US15/052,937
• Publication Number:
  US 20160240338A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01H 33/66 Vacuum switches
• CPC Class Codes: H01H 33/66207 Specific housing details, e.g. sealing, soldering or brazing
• CPC Class Codes: H01H 33/664 Contacts; Arc-extinguishing means, e.g. arcing rings
• CPC Class Codes: H01H 9/04 Dustproof, splashproof, drip-proof, waterproof, or flameproof casings

Abstract

A vacuum circuit breaker for the use in high pressure environments, has at least one vacuum interrupter with at least one moving contact and at least one fixed contact inside the vacuum interrupter, and external contact points at the vacuum interrupter. The vacuum circuit breaker can be used under the high-pressure environmental conditions through the use of at least one vacuum interrupter arranged in a pressure tight container, wherein the electrical contacting is realized via a high voltage bushings through the container wall, and the pressure tight container is at least partially filled with insulating oil.

Claims

1. A vacuum circuit breaker for use in high pressure environments, the breaker comprising:

a vacuum interrupter including a moving contact and a fixed contact inside the vacuum interrupter; and

external contact points at the vacuum interrupter,

wherein the vacuum interrupter is arranged in a pressure tight container,

wherein electrical contacting is realized via high voltage bushings through a container wall, and

wherein the pressure tight container contains an insulating oil.

2. The breaker of claim 1, wherein the pressure tight container is filled with the insulating oil.

3. The breaker of claim 1, further comprising:

an actuator for the vacuum interrupter inside the pressure tight container, in common with the vacuum interrupter.

4. The breaker of claim 3, wherein the actuator is a magnetic actuator.

5. The breaker of claim 1, configured as a three phase circuit breaker including a vacuum interrupter in each phase.

6. The breaker of claim 3, configured as a three phase circuit breaker including a vacuum interrupter in each phase.

7. The breaker of claim 1, wherein the container is configured to withstand an environmental pressure up to 300 bar.

8. The breaker of claim 1, wherein the container includes a bell-shaped container part.

9. The breaker of claim 1, wherein the container consists of at least one bell-shaped container part.

10. The breaker of claim 1, wherein the container consists of two bell-shaped container parts fixed together oppositely, and

wherein the two container parts are connected pressure tight by a high pressure o-ring seal.

11. The breaker of claim 10, wherein the seal is configured redundantly, including at least two o-ring seal, arranged nearly concentrically.

12. The breaker of claim 10, wherein the seal is configured redundantly, including at least two o-ring seal, arranged concentrically.

13. The breaker of claim 1, wherein the container is at least partly made of insulating material.

14. The breaker of claim 1, wherein the container and/or container elements are made out of steel or aluminum.

15. The breaker of claim 1, wherein the container is made of a material including steel.

16. The breaker of claim 1, wherein the container is made of a material including aluminum.

17. The breaker of claim 1, wherein container elements are made of a material including steel.

18. The breaker of claim 1, wherein container elements are made of a material including aluminum.