GB375308A - Improvements relating to electric switches and circuit breakers - Google Patents

Improvements relating to electric switches and circuit breakers

Info

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
Application number
GB8331/31A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electr & Allied Ind Res Ass
Original Assignee
Electr & Allied Ind Res Ass
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Electr & Allied Ind Res Ass filed Critical Electr & Allied Ind Res Ass
Priority to GB8332/31A priority Critical patent/GB375309A/en
Priority to GB8331/31A priority patent/GB375308A/en
Priority to US596853A priority patent/US1955212A/en
Priority to US596854A priority patent/US1914875A/en
Priority to DEB154702D priority patent/DE583582C/en
Priority to DEB154771D priority patent/DE645281C/en
Publication of GB375308A publication Critical patent/GB375308A/en
Expired legal-status Critical Current

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.
GB8331/31A 1931-03-18 1931-03-18 Improvements relating to electric switches and circuit breakers Expired GB375308A (en)

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
US596853A US1955212A (en) 1931-03-18 1932-03-04 Circuit breaker
US596854A US1914875A (en) 1931-03-18 1932-03-04 Electric switch and 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
GB8332/31A Expired GB375309A (en) 1931-03-18 1931-03-18 Improvements relating to electric switches and circuit breakers
GB8331/31A Expired GB375308A (en) 1931-03-18 1931-03-18 Improvements relating to electric switches and circuit breakers

Family Applications Before (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) GB375309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
US4980527A (en) * 1989-02-08 1990-12-25 A. B. Chance Company Arc spinner interrupter
US5015810A (en) * 1989-02-08 1991-05-14 A. B. Chance Company Arc spinner interrupter
MX169041B (en) * 1989-12-05 1993-06-17 Chance Co Ab IMPROVEMENTS IN ARC SWITCH WITH ROTATION

Cited By (1)

* Cited by examiner, † Cited by third party
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
US1955212A (en) 1934-04-17
DE645281C (en) 1937-05-27
DE583582C (en) 1933-09-06

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