GB548438A - Improvements in and relating to operating mechanism for circuit breakers - Google Patents
Improvements in and relating to operating mechanism for circuit breakersInfo
- Publication number
- GB548438A GB548438A GB8737/41A GB873741A GB548438A GB 548438 A GB548438 A GB 548438A GB 8737/41 A GB8737/41 A GB 8737/41A GB 873741 A GB873741 A GB 873741A GB 548438 A GB548438 A GB 548438A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- open
- operating
- circuit
- breaker
- 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
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
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
- H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic
Landscapes
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
548,438. Automatic circuit-breakers. BRITISH THOMSON-HOUSTON CO., Ltd. July 10, 1941. No. 8737. Convention date, July 11, 1940. [Class 38 (v)] The operating rod 11 of a circuit-breaker is closed by a pneumatically-moved lever 8 and held by latch 13 adapted to be tripped by a lever 23 on energization of a trip relay 21 and fault relay 17. The tripping operation also includes opening of a valve 33 whereby the space in the operating cylinder 5 below piston 4 is exhausted to atmosphere and the piston 4 and rod 11 allowed to drop at once to open position if closure on to a fault occurs. The trip circuit includes contacts 22 which are open when the breaker is open. The closing solenoid circuit includes a pressure-switch 27 and limit-switch 28 in addition to the coil 26 operating the valve 29. A cavity 29' in the latter leads to a port 30' to allow the cylinder 5 to exhaust normally, this port being closed by the left-hand part of the valve in its operative position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US344965A US2286023A (en) | 1940-07-11 | 1940-07-11 | Pneumatic operating mechanism for circuit breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548438A true GB548438A (en) | 1942-10-09 |
Family
ID=23352862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8737/41A Expired GB548438A (en) | 1940-07-11 | 1941-07-10 | Improvements in and relating to operating mechanism for circuit breakers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2286023A (en) |
| GB (1) | GB548438A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2470608A (en) * | 1944-07-18 | 1949-05-17 | Westinghouse Electric Corp | Circuit breaker |
| US2479315A (en) * | 1945-06-12 | 1949-08-16 | Gen Electric | Fluid actuated circuit breaker operating mechanism |
| US2542790A (en) * | 1945-11-23 | 1951-02-20 | Westinghouse Electric Corp | Circuit interrupter |
| US2575719A (en) * | 1946-06-25 | 1951-11-20 | Westinghouse Electric Corp | Circuit breaker |
| US2534901A (en) * | 1947-02-24 | 1950-12-19 | Westinghouse Electric Corp | Circuit interrupter |
| US2578204A (en) * | 1948-05-14 | 1951-12-11 | Allis Chalmers Mfg Co | Dumping valve for expediting reverse movements of fluid motors |
| US2789186A (en) * | 1955-05-31 | 1957-04-16 | Gen Electric | Electric circuit breaker |
| US2908898A (en) * | 1956-05-14 | 1959-10-13 | Mcneil Machine & Eng Co | Lubrication system |
-
1940
- 1940-07-11 US US344965A patent/US2286023A/en not_active Expired - Lifetime
-
1941
- 1941-07-10 GB GB8737/41A patent/GB548438A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2286023A (en) | 1942-06-09 |
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