US2416466A - Gas blast circuit breaker - Google Patents

Gas blast circuit breaker Download PDF

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Publication number
US2416466A
US2416466A US522772A US52277244A US2416466A US 2416466 A US2416466 A US 2416466A US 522772 A US522772 A US 522772A US 52277244 A US52277244 A US 52277244A US 2416466 A US2416466 A US 2416466A
Authority
US
United States
Prior art keywords
circuit breaker
contact
gas blast
gas
electrode
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
US522772A
Other languages
English (en)
Inventor
Bruhlmann Gottfried
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Application granted granted Critical
Publication of US2416466A publication Critical patent/US2416466A/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
    • H01H33/164—Impedances connected with contacts the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode

Definitions

  • the invention concerns a circuit breaker where the arc is extinguished by a flow of extinguishing medium, for instance pressure gas, the circuit breaker having at least one hollow contact through which the extinguishing medium discharges.
  • a flow of extinguishing medium for instance pressure gas
  • the circuit breaker having at least one hollow contact through which the extinguishing medium discharges.
  • Such circuit breakers have been provided with a resistance, which by means of a spark gap is connected in parallel with the circuit breaker contacts and serves to assist the interruption of the arc and to prevent a rapid rise of the recovery voltage.
  • the spark gap should be located at the discharge side of the pressure gas and constructed in such a manner that the spark gap is certain to ignite and extinguish for all switching conditions.
  • the aforementioned object is achieved in accordance with the invention by constructing the spark gap so as to consist of an electrode connected with the resistance and which in the direction of the gas blast is the outermost electrode, and at least one rod-shaped counter-electrode, which forms a, prolongation of the hollow contact and is metallically connected with the latter and ends outside the ow axis in the ionized space.
  • gures a denotes the stationary hollow contact through which the gas flows and which co-operates with the moveable pin contact b..
  • This moveable contact b closes the gas discharge opening in the hollow contact a when the contacts are in the closed position.
  • the resistance d is connected with the electrode ci and by means of a sliding contact with the moveable circuit breaker pin contact b. Resistance d is switched by a spark gap consisting of the electrode c1, which in the direction of the gas blast is the outermost electrode, and at least one extension piece cz acting as a counter-electrode, which is metallically connected to the hollow contact a and ends outside the flow axis in the ionized discharge space e.
  • the shape of the counter-electrodes c2 is quite optional and they can either be directly connected with the hollow contact, as shown in Figs. 1 and 2, or by means of an intermediate piece f as indicated in Fig. 3. l
  • the number of counter- Si electrodes employed is also optional; two rods located diametrically opposite to each other at the opening of the hollow contact can for instance be used.
  • the electrodes c1-c2 of the spark gap can be so arranged that their ends overlap in the axial direction, as shown in Fig. 1, or alternatively as shown in Fig. 2, so that they are some distance apart in the axial direction.
  • the free ends of the electrodes of the spark gap in the ionized space can be made either with a sharp edge or rounded oii in any desirable manner.
  • a gas blast circuit breaker comprising a flat ring-like contact through which the. gas blast ilows, a movable contact adapted to move away from said ring-like contact in a direction opposed to the ilow of said gas blast, an electrode spaced apart from said ring-like contact opposite from said movable contact, a resistance connection interposed between said electrode and said movable contact and a rod shaped counter electrode formed as an extension of said ring-like contact and metallically connected therewith, said counter electrode extending in the direction of ilow of said gas blast and ending outside of the ilow axis in the ionized space.
  • a gas blast circuit breaker as claimed in claim 1 in which a pair of rod like counter electrodes are formed as extensions of said ring-like contact and are positioned diametrically opposite to each other at the opening of the hollow contact.
  • a gas blast circuit breaker as claimed in claim 1 in which the ends oi the electrodes of the spark gap overlap in an axial direction.

Landscapes

  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Circuit Breakers (AREA)
US522772A 1943-01-18 1944-02-17 Gas blast circuit breaker Expired - Lifetime US2416466A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH572489X 1943-01-18

Publications (1)

Publication Number Publication Date
US2416466A true US2416466A (en) 1947-02-25

Family

ID=4521004

Family Applications (1)

Application Number Title Priority Date Filing Date
US522772A Expired - Lifetime US2416466A (en) 1943-01-18 1944-02-17 Gas blast circuit breaker

Country Status (6)

Country Link
US (1) US2416466A (fr)
BE (1) BE453983A (fr)
CH (1) CH234221A (fr)
FR (1) FR901760A (fr)
GB (1) GB572489A (fr)
NL (1) NL114529C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599848A (en) * 1942-05-30 1952-06-10 Latour Andre Spark arrester for pressure gas switches

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB755016A (en) * 1953-07-08 1956-08-15 Reyrolle A & Co Ltd Improvements relating to electric switchgear
DE1030423B (de) * 1956-10-25 1958-05-22 Licentia Gmbh Druckgasduesenschalter mit Schaltwiderstand

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1384469A (en) * 1917-08-03 1921-07-12 Westinghouse Electric & Mfg Co Control apparatus
US1898901A (en) * 1927-08-30 1933-02-21 Ruppel Sigwart High tension circuit interrupter
US1961475A (en) * 1932-02-22 1934-06-05 Delle Atel Const Electr Circuit breaker with liquid or gas blow-outs
US1982134A (en) * 1933-01-23 1934-11-27 Ateiliers De Const Electr De D Circuit breaker with liquid or gas blowout
US2287039A (en) * 1940-06-10 1942-06-23 Allis Chalmers Mfg Co Electric circuit breaker
US2290004A (en) * 1936-07-30 1942-07-14 Bbc Brown Boveri & Cie Electric circuit breaker
US2306242A (en) * 1941-07-25 1942-12-22 Gen Electric Gas blast electric circuit breaker
US2345724A (en) * 1942-03-19 1944-04-04 Westinghouse Electric & Mfg Co Circuit breaker
US2349095A (en) * 1942-01-17 1944-05-16 Vickers Electrical Co Ltd Electric circuit breaker
US2353729A (en) * 1941-08-14 1944-07-18 Ite Circuit Breaker Ltd Air blast arc chute
US2365134A (en) * 1940-04-15 1944-12-12 Amer Donald Foster Electric circuit breaker of the gas-blast type

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1384469A (en) * 1917-08-03 1921-07-12 Westinghouse Electric & Mfg Co Control apparatus
US1898901A (en) * 1927-08-30 1933-02-21 Ruppel Sigwart High tension circuit interrupter
US1961475A (en) * 1932-02-22 1934-06-05 Delle Atel Const Electr Circuit breaker with liquid or gas blow-outs
US1982134A (en) * 1933-01-23 1934-11-27 Ateiliers De Const Electr De D Circuit breaker with liquid or gas blowout
US2290004A (en) * 1936-07-30 1942-07-14 Bbc Brown Boveri & Cie Electric circuit breaker
US2365134A (en) * 1940-04-15 1944-12-12 Amer Donald Foster Electric circuit breaker of the gas-blast type
US2287039A (en) * 1940-06-10 1942-06-23 Allis Chalmers Mfg Co Electric circuit breaker
US2306242A (en) * 1941-07-25 1942-12-22 Gen Electric Gas blast electric circuit breaker
US2353729A (en) * 1941-08-14 1944-07-18 Ite Circuit Breaker Ltd Air blast arc chute
US2349095A (en) * 1942-01-17 1944-05-16 Vickers Electrical Co Ltd Electric circuit breaker
US2345724A (en) * 1942-03-19 1944-04-04 Westinghouse Electric & Mfg Co Circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599848A (en) * 1942-05-30 1952-06-10 Latour Andre Spark arrester for pressure gas switches

Also Published As

Publication number Publication date
BE453983A (fr)
NL114529C (fr)
FR901760A (fr) 1945-08-06
GB572489A (en) 1945-10-10
CH234221A (de) 1944-09-15

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