EP0075341A1 - Disjoncteur électrique de puissance - Google Patents

Disjoncteur électrique de puissance Download PDF

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Publication number
EP0075341A1
EP0075341A1 EP82201030A EP82201030A EP0075341A1 EP 0075341 A1 EP0075341 A1 EP 0075341A1 EP 82201030 A EP82201030 A EP 82201030A EP 82201030 A EP82201030 A EP 82201030A EP 0075341 A1 EP0075341 A1 EP 0075341A1
Authority
EP
European Patent Office
Prior art keywords
coil
contact
switch
erosion
arc
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.)
Granted
Application number
EP82201030A
Other languages
German (de)
English (en)
Other versions
EP0075341B1 (fr
Inventor
Blaise Perrenoud
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 Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0075341A1 publication Critical patent/EP0075341A1/fr
Application granted granted Critical
Publication of EP0075341B1 publication Critical patent/EP0075341B1/fr
Expired 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
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
    • H01H33/982—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow in which the pressure-generating arc is rotated by a magnetic field
    • 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

Definitions

  • the invention relates to an electrical circuit breaker according to the preamble of claim 1.
  • a switch has been proposed, for example, in the older Swiss patent application file number 3815 / 18-0.
  • the current to be switched off commutates into a current path after opening the nominal current contacts, in which it sequentially connects the coil, the arcing contact, which is designed as an arcing ring and is electrically conductively connected to the coil, and the contact that is movably arranged with respect to the nominal current contact, of the second Switching piece flows through.
  • the coil through which the current to be switched off is provided with a ferromagnetic core, a strong magnetic field acts on the arc drawn between the erosion contacts, by means of which the arc is set in rapid rotation around the erosion contact of the first contact element, which is designed as an arc running ring.
  • this strong magnetic field also makes it difficult to commutate large currents to be switched off from the nominal current path onto the coil path
  • the switch according to the invention according to claim 4 is characterized in that the switch-off arc can be blown particularly effectively because of the flow-wise advantageous arrangement of the erosion contacts.
  • an effective additional blowing of the shutdown arc can also be achieved without the aid of external energy.
  • a fixed 1 and a movable contact piece 2 are shown.
  • the fixed contact 1 has a nominal current contact 3 and an erosion contact 4
  • the movable contact 2 has a nominal current contact 5 and an erosion contact 6.
  • the current is fed to the nominal current contacts 3 or 5 via current connections 7 or.
  • Nominal current contact 3 and current connection 7 are connected via a current conductor 9 to the input of a cylindrical coil 10 surrounding the erosion contact 4.
  • the coil 10 is connected on the output side via an electrical conductor 11 to a conductor 12 made of ferromagnetic material or to an arc running ring 13 which is attached to the end of the coil 10 facing the movable contact piece 2 and is made of non-magnetizable material.
  • the ferromagnetic part 12 is connected to the erosion contact 4 of the fixed contact 1 via a sliding contact 14.
  • the erosion contact 4 has a ferromagnetic part 15 which, together with the ferromagnetic part 12 and a further ferromagnetic part 16, form a magnetic circuit in which an opening is provided at least at the location of the arcing ring 13 through which the magnetic field is generated by the shutdown current excited coil can escape.
  • the erosion contact 4 is designed as a nozzle and, together with the ferromagnetic part 15, is arranged to be displaceable along the axis of the coil 10.
  • the erosion contact 4 In the switch-on position of the switch, at most a part of the erosion contact 4 and thus the ferromagnetic part 15 penetrate the coil interior, while in the switch-off position (see right half of FIG. 1) the erosion contact 4 and thus also the ferromagnetic part 15 penetrate the coil interior, and close the contact surface of the erosion contact 4 flush with the arc race 13.
  • the erosion contact 4 is held by a spring (not shown), which in the switch-on position causes the contact force at low currents.
  • the contact force is generated far below the nominal current of the nominal current of the switch essentially by the magnetic force acting on the part 15, because sufficient current flows across the coil 10 in parallel to the nominal current contacts.
  • the movement of part 15 is limited in the off position by a stop 17.
  • an insulating gas such as sulfur hexafluoride.
  • the two rated current contacts 3 and 5 are in electrically conductive contact with one another and contact the two erosion contacts 4 and 6 on the end face.
  • the movable contact piece 2 is moved upward and therefore the two nominal current contacts 3 and 5 are first separated from one another.
  • the current to be switched off is commutated from the nominal current path to the coil path.
  • the current now flows from the current connection 7 via the current conductor 9 and the coil 10, the ferromagnetic part 12, the sliding contact 14, the erosion contacts 4 and 6 and the partition 20 to the current connection 8.
  • the magnetic field of the switched-on coil influences the commutation process only to a small extent Mass, since the magnetic burden of the coil is relatively small due to the low throughput of the ferromagnetic part 15 through the coil interior in the switch-on or commutation position.
  • a full burden is reached when the erosion contact 4 following the erosion contact 6 strikes the sliding contact 14 under the influence of the magnetic field of the coil 10 and then closes the coil interior flush with the arc race 13.
  • the arcing 18 drawn by the now eroding contacts and 6 arcing is under the influence of the magnetic field emerging from the now largely closed magnetic s at the location of the arcing ring 13.
  • the arc 18 now rotates between the erosion contacts 4 and 6 or between the arcing ring 13 located at the same potential as the erosion contact 4 and the erosion contact 6.
  • the pressure of the quenching gas located in the heating volume 21 is increased and the arc l8 through a through the nozzle openings of the erosion contacts 4 and 6 into the exhaust volume Blast 22 directed extinguishing gas flow intensively.
  • the exemplary embodiment of the circuit breaker according to the invention shown in FIG. 2 differs from the exemplary embodiment according to FIG. 1 essentially in that the erosion contact 4 is rigidly attached to the fixed contact 1 and is penetrated by the erosion contact 6 of the movable contact 1 in the switched-on position, and in that the ferromagnetic part 15 is designed as an insulating trailing nozzle and only partially contains ferromagnetic material.
  • Part 15 may include a ferromagnetic material, the surface of which is coated with an insulating material such as polytetrafluoroethylene.
  • the cutoff current is commutated from the nominal current path to the coil path with a low magnetic burden, and when the arcing contacts 4, 6 are separated and the arc is drawn between these contacts, a strong magnetic field is available at the location of the arcing ring 13 Available, by which a rapid rotation of the switch-off arc 18 and consequently a strong heating of the extinguishing gases in the volume 21 is effected.
  • the insulating, ferromagnetic part 15 achieves a favorable extinguishing geometry and additionally forms a burn protection for the contact 4.
  • the erosion contact 4 of the first contact piece 1 or the insulating ferromagnetic part 15 is a follow-up nozzle, it is conceivable to close the openings of these parts by means of an insulating pin sliding in these openings. This results in a particularly effective pressure increase in the heating volume 21, so that there is a strong blowing of the switching arc 18, in particular when switching off low currents.
  • An increase in the pressure of the extinguishing gas can also be achieved in that the magnetizable part 15 is piston-shaped at its end facing away from the second switching element 2, and this piston-shaped end in a cylinder filled with extinguishing gas, which is connected to the heating volume 21 via a channel. slides.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
EP82201030A 1981-09-16 1982-08-16 Disjoncteur électrique de puissance Expired EP0075341B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH597081 1981-09-16
CH5970/81 1981-09-16

Publications (2)

Publication Number Publication Date
EP0075341A1 true EP0075341A1 (fr) 1983-03-30
EP0075341B1 EP0075341B1 (fr) 1985-01-23

Family

ID=4302300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82201030A Expired EP0075341B1 (fr) 1981-09-16 1982-08-16 Disjoncteur électrique de puissance

Country Status (5)

Country Link
US (1) US4463230A (fr)
EP (1) EP0075341B1 (fr)
JP (1) JPS5887719A (fr)
DE (1) DE3262053D1 (fr)
YU (1) YU173582A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554273A1 (fr) * 1983-10-28 1985-05-03 Bbc Brown Boveri & Cie Disjoncteur de puissance a haute tension
DE3341930A1 (de) * 1983-10-28 1985-05-23 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8607399D0 (en) * 1986-03-25 1986-04-30 Northern Eng Ind Arc interrupter
GB8607398D0 (en) * 1986-03-25 1986-04-30 Northern Eng Ind Arc interrupter
FR2596578B1 (fr) * 1986-03-28 1994-05-06 Merlin Et Gerin Disjoncteur electrique a autoexpansion et a arc tournant
FR2617633B1 (fr) * 1987-07-02 1989-11-17 Merlin Gerin Disjoncteur a arc tournant et a expansion
JPH02101442U (fr) * 1989-01-30 1990-08-13
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
FR3019934B1 (fr) * 2014-04-14 2017-12-08 Alstom Technology Ltd Disjoncteur a arc tournant comportant une bobine inductrice a tenue elevee
WO2018036904A1 (fr) * 2016-08-26 2018-03-01 Abb Schweiz Ag Interrupteur et procédé de séparation des contacts d'un interrupteur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE532552C (de) * 1928-01-15 1931-09-01 Sigwart Ruppel Dipl Ing Anordnung fuer Schalter mit Lichtbogenloeschung durch Druckgas und durch ein elektromagnetisches Feld
FR754678A (fr) * 1932-06-08 1933-11-10 Gardy Sa Disjoncteur à maximum d'intensité
US2439952A (en) * 1944-08-31 1948-04-20 Westinghouse Electric Corp Circuit interrupter
FR2422243A1 (fr) * 1978-04-07 1979-11-02 Alsthom Cgee Disjoncteur a haute tension
EP0025375A1 (fr) * 1979-09-03 1981-03-18 Merlin Gerin Interrupteur à soufflage magnétique en rotation de l'arc

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4249051A (en) * 1978-03-27 1981-02-03 Electric Power Research Institute Arc spinner interrupter with contact follower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE532552C (de) * 1928-01-15 1931-09-01 Sigwart Ruppel Dipl Ing Anordnung fuer Schalter mit Lichtbogenloeschung durch Druckgas und durch ein elektromagnetisches Feld
FR754678A (fr) * 1932-06-08 1933-11-10 Gardy Sa Disjoncteur à maximum d'intensité
US2439952A (en) * 1944-08-31 1948-04-20 Westinghouse Electric Corp Circuit interrupter
FR2422243A1 (fr) * 1978-04-07 1979-11-02 Alsthom Cgee Disjoncteur a haute tension
EP0025375A1 (fr) * 1979-09-03 1981-03-18 Merlin Gerin Interrupteur à soufflage magnétique en rotation de l'arc

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554273A1 (fr) * 1983-10-28 1985-05-03 Bbc Brown Boveri & Cie Disjoncteur de puissance a haute tension
DE3341903A1 (de) * 1983-10-28 1985-05-23 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Hochspannungsleistungsschalter
DE3341930A1 (de) * 1983-10-28 1985-05-23 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter

Also Published As

Publication number Publication date
EP0075341B1 (fr) 1985-01-23
YU173582A (en) 1985-03-20
DE3262053D1 (en) 1985-03-07
JPH0354412B2 (fr) 1991-08-20
US4463230A (en) 1984-07-31
JPS5887719A (ja) 1983-05-25

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