US2103121A - Circuit interrupter - Google Patents

Circuit interrupter Download PDF

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Publication number
US2103121A
US2103121A US142360A US14236037A US2103121A US 2103121 A US2103121 A US 2103121A US 142360 A US142360 A US 142360A US 14236037 A US14236037 A US 14236037A US 2103121 A US2103121 A US 2103121A
Authority
US
United States
Prior art keywords
arc
slot
gas
endless
circuit interrupter
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
US142360A
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English (en)
Inventor
Slepian Joseph
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.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
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
Priority claimed from US423660A external-priority patent/US2084979A/en
Priority to AT127294D priority Critical patent/AT127294B/de
Priority to GB1133/31A priority patent/GB370980A/en
Priority to FR709845D priority patent/FR709845A/fr
Application filed by Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Priority to US142360A priority patent/US2103121A/en
Application granted granted Critical
Publication of US2103121A publication Critical patent/US2103121A/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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor

Definitions

  • Patented Dec. 21, 1937 1 UNITED STATES PATENT OFFICE CIRCUIT INTERRUPTER Joseph Slepian, Pittsburgh, Pa., assignor to Westinghouse Electric & Manufacturing Company, a corporation of Pennsylvania 9 Claims.
  • My invention' relates to circuit interrupters and particularly to interrupting devices that establish an arc in a gaseous medium.
  • This application is a division of my application Serial No. 423,660, filed January 2'7, 1930, now Patent 2,084,979 issued June 22, 1937.
  • the present invention relates to apparatus for producing a similar gas that eilects recombination of the ions in an arc path that is established in air.
  • One object of my invention is to provide an arc path, that is established in air or other gaseous medium, with means that shall evolve a deionizing gas in the presence of an arc, throughout the entire length of the are.
  • 'Another object of my invention is to construct the side walls of an arc extinguishing device of such material that a deionizing gas is freely liberated therefrom in the presence of an are.
  • a further object of my invention is to provide an arc extinguishing device of the above described .type having deionizing material on the side walls thereof, with additional structure that shall be capable of deionizing arcs of small current values.
  • a still further object of my invention is to provide a circuit interrupting device of the above described type with a venting device comprising cool metal plates or screens upon which the gas escaping therethrough may be further deionized.
  • a still further object of my invention is to provide a circuit interrupter in which the arc is established in an annular passage defined by walls of insulating material with a radial mag netic field for causing rotation of the arc in the passage.
  • Figure 1 is a sectional view, in elevation, oi
  • Figure 2 is a fragmentary sectional view, in elevation, of a modified form of circuit interrupter.
  • My invention comprises in general a stationary contact member I, a cooperating movable contact member 2 and a tubular insulating casing 3 that encloses the path between the members I and 2 when separated.
  • the casing 3 is threaded internally at each of its ends, the upper end having associated with the threads thereof a bushing 4 that is employed as a guide for the movable contact 2.
  • the lower threaded section cooperateswith the threaded end of the stationary contact member I and supports a removable insulating tube 5 within the insulating casing 3 ,directly adjacent to the movable contact member 2.
  • the removable insulating tube 5 is constructed of a material which will readily decompose when an arcis drawn between the contact members i and 2 giving off large volumes of deionizing gas that passes'turbulently through the arc stream. Any fibrous material that is afiected by an arc'to freely liberate gases of low molecular weight may be successfully employed on my structure. Paper was successfully used as well as materials known in the art as hard fibre". These materials contain a certain percentage of water, the vapors of which are eifective in aiding ion recombination. They have the further advantage of being slowly burned away by the arc, leaving clean surfaces which have a high voltage breakdown.
  • the inner cross-sectional area of the tube 5 of gas forming material is approximately the same as the cross-sectional area of the moving contact member 2; This means that the opening of the tube is as small as it can be for the size of contact member which must be used to conduct the current which the contact must normally carry. This small size of the passage through the gas evolving material gives a desirable improvement since the gas evolving material is in close contact with the arc and causes a large volume of gas to be formed to extinguish the arc.
  • the movable contact member 2 that cooperates with the stationary contact member I, is hollow and is provided with stem 2
  • I provide additional means whereby the structure is as effective for preventing arcs of small current values from being reinitiated as those of large current values.
  • inlet or outlet ducts may be of annular or other form adapted to permit radial movement of the gas with substantially equal facility in any meridian direction about-the axis of the arc.
  • a hollow stationary duct .or tube 8 of insulating material with a plurality of annular orifices 9 may be positioned in the interior of the hollow electrode 2, the latter sliding over such duct.
  • the hollow stationary tube 8 of insulating material also serves to cause arcs of small current magnitude to intimately contact the opposed walls of the arc passage formed by the tubes 5 and 8.
  • Annular vent-ducts I I] may be provided in the wall 5, and these may if desired be positioned mid-way between the annular inlet ducts. just Rotation of the are about the. insulated inlet duct, for instance by a radial ma'gneticficld indicated by arrows H, and set up by coil I2, is within the contemplation of my invention under such circumstances.
  • means of insulating material including inner and outer members having an endless ,annularly-shaped narrow slot therebetween, a terminal member, a hollow tubu: lar electrode extending into said endless annu-' larly-shaped narrow slot, and said tubular electrode being slidable over said inner member away from said terminal member for drawing an arc in the,endless slot.
  • means of insulating material including inner and outer members having an endless annularly-shaped narrow slot therebetween arterminal member, a hollow tubular electrode extending into said endless annularly-shaped narrow slot, and said tubular electrode being slidable over said inner member away from said terminal member for drawing an arc in the endless slot, means. included along said endless slot which when acted upon by the arc gives off gas to aid in extinguishing the arc, and one or more vents from the endless slot for the gas.
  • means of insulating material including inner and outer members having an endless annularly-shaped narrow slot therebetweema terminal member, a hollow tubular electrode extending into said endless annularly-shaped narrow slot, and said tubular electrode being slidable over said inner member away from said terminal member for drawing an arc in the endless slot, and means for causing a radial magnetic field across the endless slot for whirling the arc around and around in the endless slot.
  • means for establishof insulating material having an .endless annularly-shaped slot for the are after it is established and in which the arc is free to move completely around the slot, said slot for the are being so narrow as to closely confine the arc and cause it to be in intimate contact with the walls of the slot, means along the slot which when acted upon by the arc gives oiI gas to aid in extinguishing the arc, and venting means from the slot through which said gas-may fiow with an expulsion action.
  • an arc extinguisher including means of insulating material having an endless annularly-shaped slot for the are after it is established and in which the arc is free to move completely around the slot, said slot for the are being so narrow as to closely confine the arc and cause it to be in intimate contact with the walls of the slot, means along the slot which when acted upon by the arc gives off gas to aid in extinguishing the'arc, and venting means from the slot through which said gas may flow with an expulsion action; and means for causing a radial magnetic field across the endless slot for rotating the are over a recurrent path in the endless slot.
  • an arc extinguisher including means of insulating material having an endless annularly-shaped slot for the arc in which the arc is free to move completely around the slot, a pair of arc terminal members, one of which is tubular and has a cross-sectional area approximately that of the opening of said slot, said tubular arc' terminal member being movable in the slot for drawing the arc therein, means along the slot which when acted upon by the arc gives off gas to aid in extinguishing the arc, and venting means for the gas.
  • an arc extinguisher including means of insulating material having an endless annularly-shaped slot for the arc in which the arc is free to move completely around the slot, a pair of arc terminal members, one of which is tubular and base cross-sectional area approximately that of the opening of said slot, said tubular arc terminal member being movable in the slot for drawing the arc therein,
  • an arc extinguisher including means of insulating material having an endless annularly shaped slot for the are after it is established,
  • a circuit interrupter means of insulating material for defining a recurrent arc passage of tubular form, said passage being closed at one end, means including a fusible element for establishing an are within said tubular passage and means for producing a magnetic field radially across said passage for moving said are laterally along the passage.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
US142360A 1930-01-27 1937-05-13 Circuit interrupter Expired - Lifetime US2103121A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT127294D AT127294B (de) 1930-01-27 1930-12-04 Gasschalter.
GB1133/31A GB370980A (en) 1930-01-27 1931-01-13 Improvements in or relating to electric current interrupters
FR709845D FR709845A (fr) 1930-01-27 1931-01-21 Perfectionnements aux interrupteurs
US142360A US2103121A (en) 1930-01-27 1937-05-13 Circuit interrupter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US423660A US2084979A (en) 1930-01-27 1930-01-27 Circuit interrupter
US142360A US2103121A (en) 1930-01-27 1937-05-13 Circuit interrupter

Publications (1)

Publication Number Publication Date
US2103121A true US2103121A (en) 1937-12-21

Family

ID=26840028

Family Applications (1)

Application Number Title Priority Date Filing Date
US142360A Expired - Lifetime US2103121A (en) 1930-01-27 1937-05-13 Circuit interrupter

Country Status (4)

Country Link
US (1) US2103121A (de)
AT (1) AT127294B (de)
FR (1) FR709845A (de)
GB (1) GB370980A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439952A (en) * 1944-08-31 1948-04-20 Westinghouse Electric Corp Circuit interrupter
US2443260A (en) * 1940-05-07 1948-06-15 Detroit Edison Co Circuit breaker
US2840668A (en) * 1956-02-24 1958-06-24 Joslyn Mfg & Supply Co Fuse assembly for cutouts
US3082308A (en) * 1957-12-06 1963-03-19 Westinghouse Electric Corp Circuit interrupter
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
US4032736A (en) * 1974-08-20 1977-06-28 Bbc Brown Boveri & Company Limited Gas-pressurized electrical switch with current-generated magnetic field for assisting arc extinction
US4511775A (en) * 1981-10-17 1985-04-16 Bbc Brown, Boveri & Company, Limited Circuit breaker

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755347C (de) * 1934-09-15 1953-11-23 Aeg Elektrischer Schalter, insbesondere Leistungsschubtrennschalter
DE905997C (de) * 1935-02-23 1954-03-08 Frida Strauss Geb Ruppel Gasschalter
DE941439C (de) * 1935-07-03 1956-04-12 Frida Strauss Geb Ruppel Elektrischer Schalter mit leitender Schaltfluessigkeit
DE767713C (de) * 1938-02-05 1953-04-09 Aeg Elektrischer Gasschalter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443260A (en) * 1940-05-07 1948-06-15 Detroit Edison Co Circuit breaker
US2439952A (en) * 1944-08-31 1948-04-20 Westinghouse Electric Corp Circuit interrupter
US2840668A (en) * 1956-02-24 1958-06-24 Joslyn Mfg & Supply Co Fuse assembly for cutouts
US3082308A (en) * 1957-12-06 1963-03-19 Westinghouse Electric Corp Circuit interrupter
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
US4032736A (en) * 1974-08-20 1977-06-28 Bbc Brown Boveri & Company Limited Gas-pressurized electrical switch with current-generated magnetic field for assisting arc extinction
US4511775A (en) * 1981-10-17 1985-04-16 Bbc Brown, Boveri & Company, Limited Circuit breaker

Also Published As

Publication number Publication date
AT127294B (de) 1932-03-10
FR709845A (fr) 1931-08-13
GB370980A (en) 1932-04-13

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