GB423424A - Improvements in electric circuit breakers - Google Patents
Improvements in electric circuit breakersInfo
- Publication number
- GB423424A GB423424A GB23154/34A GB2315434A GB423424A GB 423424 A GB423424 A GB 423424A GB 23154/34 A GB23154/34 A GB 23154/34A GB 2315434 A GB2315434 A GB 2315434A GB 423424 A GB423424 A GB 423424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- piston
- space
- liquid
- closed
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/94—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc
- H01H33/96—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc the arc-extinguishing fluid being liquid, e.g. oil
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Circuit Breakers (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
423,424. Liquid - break switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, Vasteras, Sweden. Aug. 10, 1934, No. 23154. Convention date, Aug. 25, 1933. Addition to 408,077. [Class 38 (v)] The invention described in the parent Specification is modified by arranging for the insulating wall separating the two spaces closed by the differential piston to be movable and connected with the piston, so that during the motion of the latter under the influence of the arc, the wall follows the contact at a small and approximately constant distance from it, whereby the contact tip is always in contact with that part of the liquid where its velocity is highest. The insulating piston 6 is provided with a collar 7 engaging the insulating casing 4 and with an aperture 8 through which the movable contact 2 passes into engagement with the fixed contact 1. When, in opening the switch, the contact 2 is drawn downwards, the pressure set up by the arc drives the piston downwards, whereby liquid is forced from space 16 into space 17 through the aperture 8. The piston is arranged to move at about the same speed as the contact 2, so that the bore 8 will be almost closed during the entire breaking period. The cooling effect is improved by providing channels 20 crossing the bore 8 and debouching at 19 on the space 16. A metal cover 12 carried by a metal part 11 has pressure-relief openings 13 closed by valves 14. In Fig. 1 (not shown) the channels 20 are dispensed with. A common piston may be provided for a plurality of breaks.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE49073X | 1932-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB423424A true GB423424A (en) | 1935-01-31 |
Family
ID=20265245
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2166/33A Expired GB409099A (en) | 1932-01-23 | 1933-01-23 | Improvements in electric circuit-breakers |
| GB2165/33A Expired GB408077A (en) | 1932-01-23 | 1933-01-23 | Improvements in electric circuit-breakers |
| GB23154/34A Expired GB423424A (en) | 1932-01-23 | 1934-08-10 | Improvements in electric circuit breakers |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2166/33A Expired GB409099A (en) | 1932-01-23 | 1933-01-23 | Improvements in electric circuit-breakers |
| GB2165/33A Expired GB408077A (en) | 1932-01-23 | 1933-01-23 | Improvements in electric circuit-breakers |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2020475A (en) |
| BE (2) | BE393776A (en) |
| DE (3) | DE912122C (en) |
| DK (1) | DK49073C (en) |
| FR (2) | FR749337A (en) |
| GB (3) | GB409099A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2850599A (en) * | 1954-06-04 | 1958-09-02 | Asea Ab | Extinguishing chamber for oil circuit breakers |
| US2878345A (en) * | 1955-02-11 | 1959-03-17 | Asea Ab | Extinguishing chamber for electric circuit breakers |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB378535A (en) * | 1931-05-09 | 1932-08-09 | British Electrical & Allied In | Improvements relating to electric switches or circuit breakers, fusible cut-outs andlightning arresters |
| US2477837A (en) * | 1944-08-25 | 1949-08-02 | Westinghouse Electric Corp | Circuit interrupter |
| US2447950A (en) * | 1945-04-03 | 1948-08-24 | Westinghouse Electric Corp | Circuit interrupter |
| US2420889A (en) * | 1945-04-06 | 1947-05-20 | Westinghouse Electric Corp | Circuit interrupter |
| US2686854A (en) * | 1948-02-13 | 1954-08-17 | Westinghouse Electric Corp | Circuit interrupter |
| DE1017684B (en) * | 1954-07-17 | 1957-10-17 | Sachsenwerk Licht & Kraft Ag | Fire chamber for low-oil electrical circuit breakers |
| US3378661A (en) * | 1965-10-20 | 1968-04-16 | Allis Chalmers Mfg Co | Auxiliary contact structure with arc suppressing means |
-
0
- BE BE404895D patent/BE404895A/xx unknown
-
1932
- 1932-12-04 DE DEST665D patent/DE912122C/en not_active Expired
- 1932-12-04 DE DEST666D patent/DE894269C/en not_active Expired
-
1933
- 1933-01-12 US US651279A patent/US2020475A/en not_active Expired - Lifetime
- 1933-01-19 FR FR749337D patent/FR749337A/en not_active Expired
- 1933-01-20 BE BE393776D patent/BE393776A/xx unknown
- 1933-01-21 DK DK49073D patent/DK49073C/en active
- 1933-01-23 GB GB2166/33A patent/GB409099A/en not_active Expired
- 1933-01-23 GB GB2165/33A patent/GB408077A/en not_active Expired
-
1934
- 1934-04-06 DE DEST1137D patent/DE912595C/en not_active Expired
- 1934-08-10 GB GB23154/34A patent/GB423424A/en not_active Expired
- 1934-08-24 FR FR45197D patent/FR45197E/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2850599A (en) * | 1954-06-04 | 1958-09-02 | Asea Ab | Extinguishing chamber for oil circuit breakers |
| US2878345A (en) * | 1955-02-11 | 1959-03-17 | Asea Ab | Extinguishing chamber for electric circuit breakers |
Also Published As
| Publication number | Publication date |
|---|---|
| GB409099A (en) | 1934-04-26 |
| BE393776A (en) | 1933-02-28 |
| BE404895A (en) | |
| DK49073C (en) | 1934-07-30 |
| DE894269C (en) | 1953-10-22 |
| GB408077A (en) | 1934-04-05 |
| DE912122C (en) | 1954-05-24 |
| US2020475A (en) | 1935-11-12 |
| DE912595C (en) | 1954-05-31 |
| FR45197E (en) | 1935-07-06 |
| FR749337A (en) | 1933-07-21 |
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