GB708191A - Improvements relating to spring-closed electric circuit-breakers - Google Patents
Improvements relating to spring-closed electric circuit-breakersInfo
- Publication number
- GB708191A GB708191A GB939051A GB939051A GB708191A GB 708191 A GB708191 A GB 708191A GB 939051 A GB939051 A GB 939051A GB 939051 A GB939051 A GB 939051A GB 708191 A GB708191 A GB 708191A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- arm
- breakers
- bell
- crank
- 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
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
Landscapes
- Mechanisms For Operating Contacts (AREA)
Abstract
708,191. Actuation of switches. REYROLLE & Co., Ltd., A. April 23, 1952 [April 23, 1951], No. 9390/51. Class 38(5) A spring-closed circuit-breaker has a movable contact A pivoted at A<SP>1</SP> and connected to an arm D<SP>1</SP> of a bell-crank D, the main closing spring E being connected to the arm D<SP>2</SP> thereof, a further arm D<SP>3</SP> having an auxiliary spring F connected thereto. In the open position shown, the spring F opposes the spring E but as the bell-crank D is moved counter-clockwise by the spring E, the spring F moves across a dead-centre position in line with the arm D<SP>3</SP> and then acts in.the opposite sense to assist the spring E. The arrangement is preferably such that the energy of spring F is the same in the open position as it is in the position at which the contacts just begin to engage, Fig. 3 (not shown), so that the contact speed is determined by the spring E which may be adjustable. Each spring may be replaced by a battery of springs. In a modification (not shown) the arm D' carries a roller acting on a cam surface carried by the contact arm so as to modify the characteristics of the combined springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB939051A GB708191A (en) | 1951-04-23 | 1951-04-23 | Improvements relating to spring-closed electric circuit-breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB939051A GB708191A (en) | 1951-04-23 | 1951-04-23 | Improvements relating to spring-closed electric circuit-breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB708191A true GB708191A (en) | 1954-04-28 |
Family
ID=9871060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB939051A Expired GB708191A (en) | 1951-04-23 | 1951-04-23 | Improvements relating to spring-closed electric circuit-breakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB708191A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582595A (en) * | 1969-10-31 | 1971-06-01 | Erickson Electrical Equipment | Trip-free switch-operating mechanism |
| US3735073A (en) * | 1971-11-30 | 1973-05-22 | Westinghouse Electric Corp | Circuit interrupter with overcenter spring charging means |
| FR2595004A1 (en) * | 1986-02-21 | 1987-08-28 | Alsthom | MECHANICAL DEVICE FOR ACTUATING A CIRCUIT BREAKER |
| EP1237169A1 (en) * | 2001-03-01 | 2002-09-04 | Alstom | High voltage circuir breaker with spring actuator with an additional energy recuperating spring |
| EP1331654A2 (en) * | 2002-01-23 | 2003-07-30 | Siemens Aktiengesellschaft | Circuit breaker with a drive device to operate a contact unit |
-
1951
- 1951-04-23 GB GB939051A patent/GB708191A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582595A (en) * | 1969-10-31 | 1971-06-01 | Erickson Electrical Equipment | Trip-free switch-operating mechanism |
| US3735073A (en) * | 1971-11-30 | 1973-05-22 | Westinghouse Electric Corp | Circuit interrupter with overcenter spring charging means |
| FR2595004A1 (en) * | 1986-02-21 | 1987-08-28 | Alsthom | MECHANICAL DEVICE FOR ACTUATING A CIRCUIT BREAKER |
| EP0238847A1 (en) * | 1986-02-21 | 1987-09-30 | Gec Alsthom Sa | Operating device for circuit-breaker |
| US4743721A (en) * | 1986-02-21 | 1988-05-10 | Alsthom | Circuit breaker actuator device |
| EP1237169A1 (en) * | 2001-03-01 | 2002-09-04 | Alstom | High voltage circuir breaker with spring actuator with an additional energy recuperating spring |
| FR2821696A1 (en) * | 2001-03-01 | 2002-09-06 | Alstom | HIGH VOLTAGE CIRCUIT BREAKER HAVING A SPRING DRIVE WITH AN ADDITIONAL ENERGY RECOVERY SPRING |
| US6667452B2 (en) | 2001-03-01 | 2003-12-23 | Alstom | High-voltage circuit-breaker having a spring-loaded control mechanism with an energy-recovering additional spring |
| EP1331654A2 (en) * | 2002-01-23 | 2003-07-30 | Siemens Aktiengesellschaft | Circuit breaker with a drive device to operate a contact unit |
| EP1331654A3 (en) * | 2002-01-23 | 2005-04-20 | Siemens Aktiengesellschaft | Circuit breaker with a drive device to operate a contact unit |
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