GB375308A - Improvements relating to electric switches and circuit breakers - Google Patents
Improvements relating to electric switches and circuit breakersInfo
- Publication number
- GB375308A GB375308A GB8331/31A GB833131A GB375308A GB 375308 A GB375308 A GB 375308A GB 8331/31 A GB8331/31 A GB 8331/31A GB 833131 A GB833131 A GB 833131A GB 375308 A GB375308 A GB 375308A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- nozzle
- contact
- cone
- current
- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
375,308. High tension switches. BRITISH ELECTRICAL & ALLIED INDUSTRIES RESEARCH ASSOCIATION, WEDMORE, E. B., and WHITNEY, W. B. 36, Kingsway, London. March 18, 1931, No. 8331. [Class 38 (v).] Sparking, preventing.-In an A.C. gasblast switch with nozzle contacts as described in Specification 278,764, [Class 38 (v), Electric switches &c.], the contacts are so shaped that when the arc extending between the movable contact and the fixed contact in the region of the least gap tends to move from this region of maximum blast it experiences a restoring force produced by the electrodynamic action on it of the currents in the fixed contact. In the arrangement shown in the Figure, the nozzle contact 1 which has an outer enclosure is provided with a conical internal metal part 3a, screwed into its lower end. The lead-in to the contact is at 4 and the electrodynamic action of the current passing down the upper portion 1 tends to depress the arc drawn between the resilient movable contact 6 and the throat 3 of the nozzle. If, however, the arc impinges on the cone 2 the reaction between it and the upwardly flowing current in the cone lifts it to its original position. In a modification, the inner cone is dispensed with and the current led into the fixed contact both from the top and the bottom. The upper end of the nozzle may be furnished with a downwardly-extending cone so that when the arc impinges on it the direction of approach of the current through the contact is reversed to cause the arc to return. The nozzle and cone may be made up of segments or strips so that when the arc root settles on one of them the current is carried wholly by it and the electrodynamic action is concentrated and localized. Magnetic material may be arranged within the slits to increase the action. The nozzle 1 may be perforated to admit the gas blast to all parts of the arc.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8332/31A GB375309A (en) | 1931-03-18 | 1931-03-18 | Improvements relating to electric switches and circuit breakers |
GB8331/31A GB375308A (en) | 1931-03-18 | 1931-03-18 | Improvements relating to electric switches and circuit breakers |
US596854A US1914875A (en) | 1931-03-18 | 1932-03-04 | Electric switch and circuit breaker |
US596853A US1955212A (en) | 1931-03-18 | 1932-03-04 | Circuit breaker |
DEB154702D DE583582C (en) | 1931-03-18 | 1932-03-05 | Circuit breaker with arc extinguishing by a blowing current |
DEB154771D DE645281C (en) | 1931-03-18 | 1932-03-10 | Electric circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8331/31A GB375308A (en) | 1931-03-18 | 1931-03-18 | Improvements relating to electric switches and circuit breakers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB375308A true GB375308A (en) | 1932-06-20 |
Family
ID=9850491
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8331/31A Expired GB375308A (en) | 1931-03-18 | 1931-03-18 | Improvements relating to electric switches and circuit breakers |
GB8332/31A Expired GB375309A (en) | 1931-03-18 | 1931-03-18 | Improvements relating to electric switches and circuit breakers |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8332/31A Expired GB375309A (en) | 1931-03-18 | 1931-03-18 | Improvements relating to electric switches and circuit breakers |
Country Status (3)
Country | Link |
---|---|
US (2) | US1914875A (en) |
DE (2) | DE583582C (en) |
GB (2) | GB375308A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE744622C (en) * | 1942-09-10 | 1944-01-21 | Voigt & Haeffner Ag | Blowing chamber with arc extinguishing through gas flowing across the arc |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB398213A (en) * | 1932-03-01 | 1933-09-01 | Willis Bevan Whitney | Improvements in or relating to circuit breakers |
DE758950C (en) * | 1940-02-09 | 1952-04-17 | Porzellanfabrik Kahla | Pin-shaped and tubular break contact intended for high-voltage switches |
BE477587A (en) * | 1943-07-17 | |||
US2507210A (en) * | 1944-11-28 | 1950-05-09 | Westinghouse Electric Corp | Gas blast circuit breaker |
FR959519A (en) * | 1947-01-15 | 1950-03-31 | ||
DE952533C (en) * | 1953-08-19 | 1956-11-15 | Licentia Gmbh | High-voltage pressure gas switch |
US3274365A (en) * | 1963-08-16 | 1966-09-20 | Gen Electric | Gas blast circuit breaker of the axial blast type with magnetic means for rotating an arc terminal |
US3330927A (en) * | 1963-08-16 | 1967-07-11 | Gen Electric | Gas blast circuit breaker of the axial blast type with magnetic means for forcing the upstream arc terminal away from the center of the stagnation zone at the upstream electrode |
GB1122312A (en) * | 1965-09-27 | 1968-08-07 | English Electric Co Ltd | Improvements in and relating to protective spark gap devices |
CH534420A (en) * | 1972-04-24 | 1973-02-28 | Sprecher & Schuh Ag | Blowing nozzle arrangement for pressure gas switch |
FR2422243A1 (en) * | 1978-04-07 | 1979-11-02 | Alsthom Cgee | Gas dielectric HV circuit breaker - has annular secondary electrodes and arc extinction windings |
FR2464550A1 (en) * | 1979-09-03 | 1981-03-06 | Merlin Gerin | MAGNETIC BLOW SWITCH IN ARC ROTATION |
FR2531804B1 (en) * | 1982-08-10 | 1985-06-07 | Merlin Gerin | ELECTRIC SWITCH WITH ROTATING ARC |
JPS60246521A (en) * | 1984-05-22 | 1985-12-06 | 三菱電機株式会社 | Switch |
US5015810A (en) * | 1989-02-08 | 1991-05-14 | A. B. Chance Company | Arc spinner interrupter |
US4980527A (en) * | 1989-02-08 | 1990-12-25 | A. B. Chance Company | Arc spinner interrupter |
AU5267790A (en) * | 1989-12-05 | 1991-06-26 | A.B. Chance Company | Arc spinner interrupter |
-
1931
- 1931-03-18 GB GB8331/31A patent/GB375308A/en not_active Expired
- 1931-03-18 GB GB8332/31A patent/GB375309A/en not_active Expired
-
1932
- 1932-03-04 US US596854A patent/US1914875A/en not_active Expired - Lifetime
- 1932-03-04 US US596853A patent/US1955212A/en not_active Expired - Lifetime
- 1932-03-05 DE DEB154702D patent/DE583582C/en not_active Expired
- 1932-03-10 DE DEB154771D patent/DE645281C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE744622C (en) * | 1942-09-10 | 1944-01-21 | Voigt & Haeffner Ag | Blowing chamber with arc extinguishing through gas flowing across the arc |
Also Published As
Publication number | Publication date |
---|---|
US1914875A (en) | 1933-06-20 |
GB375309A (en) | 1932-06-20 |
DE645281C (en) | 1937-05-27 |
DE583582C (en) | 1933-09-06 |
US1955212A (en) | 1934-04-17 |
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