GB889248A - Improved hydraulic means for stressing the springs of spring-actuated electric switches - Google Patents
Improved hydraulic means for stressing the springs of spring-actuated electric switchesInfo
- Publication number
- GB889248A GB889248A GB3938759A GB3938759A GB889248A GB 889248 A GB889248 A GB 889248A GB 3938759 A GB3938759 A GB 3938759A GB 3938759 A GB3938759 A GB 3938759A GB 889248 A GB889248 A GB 889248A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- switch
- spring
- arm
- pump
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- 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
- H01H3/3005—Charging means
- H01H3/301—Charging means using a fluid actuator
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Actuator (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
889,248. Hydraulic actuation of switches. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov. 20, 1959 [Nov. 22, 1958; Dec. 18, 1958], No. 39387/59. Class 38 (5). The actuating spring 12 of a high-voltage switch is stressed by means of a piston 17 connected through a pipe 7 to an assembly comprising a liquid container 1, a valve housing 4 and a pump 2 driven by a motor 10 supplied through a control switch 8. Movement of a member 18 releases an arm 11, which is rotated anti-clockwise by the spring 12 to close the switch and to release a locking member 13 from engagement with the piston rod, movement of the member 13 thereby closing contacts 14. This closure operates the switch 8 which is held closed by its contact d to start the pump 2, the resulting liquid flow from the container 1 depressing a valve 3 against the housing 4 and then passing through a spring-loaded ball valve into the pipe 7 and the cylinder 15. The piston is thus lifted to restore the arm 11, the switch 8 being held closed upon release of the member 13 by a pressure switch 6 until members 11, 12 are fully reset, after which the system pressure rises to open the switch 6 and stop the pump 2. Restoration of the piston 17 by a spring 16 reengages the member 13 and forces liquid back into the container 1, a valve 9 serving to release excess system pressure. In a modification, Fig. 4, the arm 11 is connected to an extension of the member 13 by a spring 21, member 13 being rotated anti-clockwise from engagement with the piston projection 19 by downward movement of the arm 11, which is restored by an arm 20 secured to the piston 17. If, however, downward movement of the arm 11 occurs when the piston 17 is under downward liquid pressure caused by operation of the piston associated with another switch, the projection 19 prevents release of the member 13 by the spring 21 until such an operation is completed, thus ensuring that the pump 2 is not overloaded,
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1085058 | 1958-11-22 | ||
| SE1175258 | 1958-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB889248A true GB889248A (en) | 1962-02-14 |
Family
ID=26655793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3938759A Expired GB889248A (en) | 1958-11-22 | 1959-11-20 | Improved hydraulic means for stressing the springs of spring-actuated electric switches |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH379865A (en) |
| DE (1) | DE1159542B (en) |
| FR (1) | FR1243576A (en) |
| GB (1) | GB889248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460390A2 (en) * | 1990-06-08 | 1991-12-11 | GEC Alsthom T&D AG | Spring energy accumulator drive for a high voltage switch |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH566639A5 (en) * | 1973-11-19 | 1975-09-15 | Bbc Brown Boveri & Cie | |
| EP0320614B1 (en) * | 1987-12-14 | 1992-09-09 | Sprecher Energie AG | Spring energy accumulator drive for a high voltage switch |
-
1959
- 1959-11-19 CH CH8077059A patent/CH379865A/en unknown
- 1959-11-20 GB GB3938759A patent/GB889248A/en not_active Expired
- 1959-11-21 DE DEA33344A patent/DE1159542B/en active Pending
- 1959-11-21 FR FR810877A patent/FR1243576A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0460390A2 (en) * | 1990-06-08 | 1991-12-11 | GEC Alsthom T&D AG | Spring energy accumulator drive for a high voltage switch |
| EP0460390A3 (en) * | 1990-06-08 | 1992-07-22 | Sprecher Energie Ag | Spring energy accumulator drive for a high voltage switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CH379865A (en) | 1964-07-15 |
| DE1159542B (en) | 1963-12-19 |
| FR1243576A (en) | 1960-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB764647A (en) | Improvements in air blast electric circuit breakers | |
| US1805082A (en) | Counting relay | |
| GB889248A (en) | Improved hydraulic means for stressing the springs of spring-actuated electric switches | |
| US3334202A (en) | Manually-controlled circuit breaker tripping arrangement | |
| US2862476A (en) | Oil pressure operating device for electric circuit breakers | |
| US3064093A (en) | Hydraulic means for stressing the springs of spring actuated electric switches | |
| GB734372A (en) | Improvements in or relating to gas-blast circuit breakers | |
| US2411360A (en) | Circuit breaker | |
| US2381307A (en) | Circuit breaker | |
| US2389111A (en) | Control means | |
| US2379178A (en) | Circuit breaker | |
| US2876786A (en) | Control apparatus | |
| GB1305112A (en) | ||
| US2941545A (en) | High-pressure valve employing engaging inlet and exhaust valve elements | |
| GB1089305A (en) | A pressure actuated electric control switch | |
| GB760146A (en) | Electric circuit breaker | |
| US3133165A (en) | Time delay switch | |
| GB1494470A (en) | Safety limit switch | |
| GB1018001A (en) | Improvements relating to oil circuit breakers | |
| GB870122A (en) | Selective operator apparatus | |
| GB676397A (en) | Protective device for electrical apparatus operating in an insulating liquid | |
| US2678659A (en) | Valve mechanism | |
| GB206608A (en) | Improvements in and relating to electric switches for electric liquid heaters | |
| US2853055A (en) | Portable pneumohydraulic closing mechanism for circuit breakers | |
| GB828853A (en) | Improvements in hydraulic operating devices for electric circuit breakers |