US2049995A - Electric circuit-breaker with compressed gas blow-out - Google Patents

Electric circuit-breaker with compressed gas blow-out Download PDF

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Publication number
US2049995A
US2049995A US549001A US54900131A US2049995A US 2049995 A US2049995 A US 2049995A US 549001 A US549001 A US 549001A US 54900131 A US54900131 A US 54900131A US 2049995 A US2049995 A US 2049995A
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US
United States
Prior art keywords
chute
electrodes
contacts
arc
breaker
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 - Lifetime
Application number
US549001A
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English (en)
Inventor
Clerc Andre
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.)
Ateliers de Constructions Electriques de Delle SA
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2049995A publication Critical patent/US2049995A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H33/16—Impedances connected with contacts
    • H01H33/161—Variable impedances

Definitions

  • the present invention relates to an improvement in or modification of the electric circuit breaker described in my co-pending U. S. application No. 503,835, filed December 20th, 1930,
  • circuit-breaker provided with relatively movable contacts and having one low ohmic resistance connected to one contact and to a stationary electrode located behind the contacts, so that the arc being struck at first between the two contacts is blown on to the said electrode.
  • the present invention which relates to an 15 improvement in such circuit-breakers, has for its object a circuit-breaker in which the arc, struck at first between the two contacts, is blown by a gas unto several stationary electrodes connected, together and to one of said contacts, by,
  • the movable contact being displaced perpendicularly to the direction of the blast, and the whole arranged so that several intermediate points of the are formed between the contacts are blown on to the electrodes,
  • Another object of the present invention con- 30 sists in disposing the stationary electrodes symmetrically on two opposite sides of the arc chute.
  • Figure 1 is a vertical sectional view of the circuit breaker
  • Figure 2 is a plan view of the blowing chute.
  • the circuit breaker is formed by a fixed contact i and a contact 2 movable in the horizontal direction.
  • the mov- 40 able contact passes through the walls of a tube 3 through which, as indicated by an arrow, the gas for extinguishing purposes passes in vertical direction.
  • An arc chute 4 of insulating material is provided at one of the ends of the passage 3 45 near the contacts.
  • This chute is formed by two parallel sides 5 connected by two divergent walls 6.
  • Said walls 6 are extended by horns I each of said horns being electrically connected to one of the contacts I and 2.
  • Each of the horns is 50 connected, moreover, to a series of low ohmic resistance elements 8 and 8" connected together. The free end of each said series of resistances is connected to a stationary electrode 9 formed, for
  • cent resistance elements 8 and 8 is connected to another stationary electrode 'll similar to electrode 9.
  • a metallic plate I electrically insulated from the electrodes and contacts. All said stationary electrodes 9 and II and said plate I! are disposed.
  • the chute 4 is thus of fan-tail shape and has a numl5 ber of divergent chambers in the form of pyramids.
  • the circuit-breaker operates as follows;
  • the construction of the apparatus may be simplified by dispensing with the plate It], the electrodes M and even with one of the horns 1 together with its resistance.
  • a divergent arc chute in an electric circuit breaker, relatively mobile contacts in said chute, several stationary electrodes in said chute, said electrodes being disposed symmetrically on two opposite sides of this chute, ohmic resistances connected between the stationary electrodes on each side of said chute, a metallic plate disposed in the centre of said chute between the electrodes of the two sides and electrically insulated from said electrodes, walls of insulating material prolonging said metallic plate towards the outlet of said chute, and means for blowing a blast of gas insaid chute transversely to the trajectory of the movable contact and in the direction of said electrodes.
  • an arc chute having divergent opposed walls; relatively movable contacts in said chute; stationary electrodes disposed radially in said chute substantially in the plane of said contacts and having their free ends directed toward the latter; ohmic resistances connected between said electrodes, one of said electrodes at least being connected to one ofsaid contacts; and means for blowing a-gas blast in said chute transversely to the path of relativemovement of said contacts and along said electrodes.
  • chute relatively'movable contacts in said 35 chute, several stationary electrodes disposed radially in said divergent chute, said electrodes being prolonged towards the outlet of said chute by plates of insulating material, ohmic resistances connected between said electrodes, one of said electrodes at least being connected to one of said contacts, and means for blowing a blast of gas in said chute transversely to the trajectory of the movable contact and along said electrodes.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
US549001A 1930-08-05 1931-07-06 Electric circuit-breaker with compressed gas blow-out Expired - Lifetime US2049995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE625395T 1930-08-05

Publications (1)

Publication Number Publication Date
US2049995A true US2049995A (en) 1936-08-04

Family

ID=34812913

Family Applications (1)

Application Number Title Priority Date Filing Date
US549001A Expired - Lifetime US2049995A (en) 1930-08-05 1931-07-06 Electric circuit-breaker with compressed gas blow-out

Country Status (4)

Country Link
US (1) US2049995A (en(2012))
BE (1) BE375920A (en(2012))
DE (1) DE625395C (en(2012))
FR (1) FR710225A (en(2012))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452953A (en) * 1945-04-06 1948-11-02 Gen Electric Circuit interrupting apparatus
US2486127A (en) * 1944-06-26 1949-10-25 Gen Electric Air blast electric circuit breaker
US2586290A (en) * 1947-11-01 1952-02-19 Westinghouse Electric Corp Circuit interrupter
US2606982A (en) * 1949-06-11 1952-08-12 Allis Chalmers Mfg Co Arc chute defining two alternate arc paths
US3379848A (en) * 1965-01-26 1968-04-23 Westinghouse Electric Corp Gas-blast circuit breaker having a movable tubular venting contact and a laterally arranged exhaust vent in the interrupting chamber

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116769B (de) * 1953-01-13 1961-11-09 Merlin Gerin Schalter mit Loeschkammer und zwischen dieser und den Schaltkontakten angeordneten, auseinanderlaufenden Leithoernern, auf denen der Lichtbogen mit Unterstuetzung durch einen Luftstrom zur Loeschkammer wandert
DE1006929B (de) * 1953-11-20 1957-04-25 August Stemmann O H G Fabrik E Funkenkammer, insbesondere fuer Nockenschalter
BE548341A (en(2012)) * 1955-06-03
CH598691A5 (en(2012)) * 1976-06-21 1978-05-12 Bbc Brown Boveri & Cie

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486127A (en) * 1944-06-26 1949-10-25 Gen Electric Air blast electric circuit breaker
US2452953A (en) * 1945-04-06 1948-11-02 Gen Electric Circuit interrupting apparatus
US2586290A (en) * 1947-11-01 1952-02-19 Westinghouse Electric Corp Circuit interrupter
US2606982A (en) * 1949-06-11 1952-08-12 Allis Chalmers Mfg Co Arc chute defining two alternate arc paths
US3379848A (en) * 1965-01-26 1968-04-23 Westinghouse Electric Corp Gas-blast circuit breaker having a movable tubular venting contact and a laterally arranged exhaust vent in the interrupting chamber

Also Published As

Publication number Publication date
DE625395C (de) 1936-02-10
FR710225A (fr) 1931-08-20
BE375920A (en(2012))

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