GB593230A - Improvements in and relating to air-blast electrical circuit breakers - Google Patents
Improvements in and relating to air-blast electrical circuit breakersInfo
- Publication number
- GB593230A GB593230A GB1769645A GB1769645A GB593230A GB 593230 A GB593230 A GB 593230A GB 1769645 A GB1769645 A GB 1769645A GB 1769645 A GB1769645 A GB 1769645A GB 593230 A GB593230 A GB 593230A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- pressure
- pistons
- contacts
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000007789 sealing Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
- H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
- H01H33/83—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas wherein the contacts are opened by the flow of air or gas
Landscapes
- Circuit Breakers (AREA)
Abstract
593,230. Gas-blast switches. GENERAL ELECTRIC CO., Ltd., and KEELEY, F. J. July 11, 1945, No. 17696. [Class 38(v)] In a pneumatically-actuated, air-blast circuit-breaker the two sides of a contactoperating piston are subjected respectively to the pressure of air in a receiver and in a cylinder, and the piston controls a valve normally closing the air-blast passage and maintaining a pressure difference between the two sides of the piston whilst pressure is maintained in the cylinder, means being provided to release the pressure in the cylinder to cause the contacts to separate. Compressed air is supplied to a receiver 1 and cylinder 9 through pipes 8, 22. When air is released from the pipe 22, air pressure in the receiver acts on the outer portions of piston 12, 13, overcoming springs 23 and moving the pistons. Sealing rings 21 on the pistons then separate from flanges 10, and the pistons accelerate as larger surfaces are exposed to the air pressure. The contacts 7 are biased by springs 18 so that they do not follow the pistons until plugs 16 secured to the contacts are engaged by flanges 17 on tubes 14 secured to the pistons, by which time adequate pressure for arc-extinction has been built up in the tubes 5. A series isolator is opened as soon as the current has been interrupted and air is re-admitted to the pipe 22 to close the contacts 7, 6 and conserve compressed air.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB593230A true GB593230A (en) | 1947-10-10 |
Family
ID=1733331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1769645A Expired GB593230A (en) | 1945-07-11 | Improvements in and relating to air-blast electrical circuit breakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB593230A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2911507A (en) * | 1957-06-21 | 1959-11-03 | Ite Circuit Breaker Ltd | Recirculating gas blast interrupter |
| US2936355A (en) * | 1957-06-21 | 1960-05-10 | Ite Circuit Breaker Ltd | Latch means for recirculating gas blast interrupters |
| US2955182A (en) * | 1957-06-21 | 1960-10-04 | Ite Circuit Breaker Ltd | Contact cooling means for recirculating gas blast interrupters |
| US2962570A (en) * | 1958-06-28 | 1960-11-29 | Bbc Brown Boveri & Cie | Electric switch |
| US3043940A (en) * | 1958-01-10 | 1962-07-10 | Westinghouse Electric Corp | Compressed-gas circuit interrupter |
| US3612798A (en) * | 1970-03-02 | 1971-10-12 | Gen Electric | Airblast circuit breaker with improved sealing means |
-
1945
- 1945-07-11 GB GB1769645A patent/GB593230A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2911507A (en) * | 1957-06-21 | 1959-11-03 | Ite Circuit Breaker Ltd | Recirculating gas blast interrupter |
| US2936355A (en) * | 1957-06-21 | 1960-05-10 | Ite Circuit Breaker Ltd | Latch means for recirculating gas blast interrupters |
| US2955182A (en) * | 1957-06-21 | 1960-10-04 | Ite Circuit Breaker Ltd | Contact cooling means for recirculating gas blast interrupters |
| US3043940A (en) * | 1958-01-10 | 1962-07-10 | Westinghouse Electric Corp | Compressed-gas circuit interrupter |
| US2962570A (en) * | 1958-06-28 | 1960-11-29 | Bbc Brown Boveri & Cie | Electric switch |
| US3612798A (en) * | 1970-03-02 | 1971-10-12 | Gen Electric | Airblast circuit breaker with improved sealing means |
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