EP0075341B1 - Elektrischer Leistungsschalter - Google Patents

Elektrischer Leistungsschalter Download PDF

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Publication number
EP0075341B1
EP0075341B1 EP82201030A EP82201030A EP0075341B1 EP 0075341 B1 EP0075341 B1 EP 0075341B1 EP 82201030 A EP82201030 A EP 82201030A EP 82201030 A EP82201030 A EP 82201030A EP 0075341 B1 EP0075341 B1 EP 0075341B1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit breaker
coil
arcing
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
EP82201030A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0075341A1 (de
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/de
Application granted granted Critical
Publication of EP0075341B1 publication Critical patent/EP0075341B1/de
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 patent claim 1.
  • Such a switch has been proposed, for example, in the older, non-prepublished Swiss patent application 3 815/80.
  • the current to be switched off commutates into a current path after opening the rated current contacts, in which it sequentially connects the coil, the arcing contact ring, which is designed as an arcing ring and is electrically conductively connected to the coil, and the second contact contact which is movably arranged with respect to the rated current contact Contact 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, causing the arc to rotate rapidly around the erosion contact of the first contact piece, 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 to the coil path.
  • the switch according to the invention 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 load on the shutdown arc can also be achieved without the aid of external energy.
  • a fixed contact 1 and a movable contact 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 and 5 via current connections 7 and 8, respectively.
  • 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 and faces the movable contact piece 2 and is made of non-magnetizable material.
  • the ferromagnetic conductor 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 conductor 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 and thus the ferromagneti penetrate rule's part 15 the coil interior, while in the off position (see right half of Fig. 1) the erosion contact 4 and thus also the ferromagnetic part 15 passes through the coil interior, and the contact surface of the erosion contact 4 is 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 switch essentially by the magnetic force acting on the part 15, because enough current flows in parallel with the nominal current contacts via the coil 10.
  • the movement of part 15 is limited in the off position by a stop 17.
  • an insulating gas such as sulfur hexafluoride.
  • the embodiment of the circuit breaker according to the invention shown in FIG. 2 differs from the embodiment of FIG. 1 essentially in that the erosion contact 4 is rigidly attached to the fixed contact 1 and is penetrated in the switch-on position by the erosion contact 6 of the movable contact 1, and that 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 switch-off current is commutated from the nominal current to the coil path with a low magnetic burden in accordance with the exemplary embodiment according to FIG. 1, so that when the arcing contacts 4, 6 are separated and the arc is drawn between these contacts, a strong magnetic field is located at the location of the arcing ring 13 is available, by means of which a rapid rotation of the arc 18 and consequently a strong heating of the extinguishing gases in the heating volume 21 is brought about.
  • 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 trailing nozzle, it is conceivable to close the nozzle 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 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 Elektrischer Leistungsschalter Expired EP0075341B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=4302300

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82201030A Expired EP0075341B1 (de) 1981-09-16 1982-08-16 Elektrischer Leistungsschalter

Country Status (5)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH661144A5 (de) * 1983-10-28 1987-06-30 Bbc Brown Boveri & Cie Hochspannungsleistungsschalter.
CH662443A5 (de) * 1983-10-28 1987-09-30 Bbc Brown Boveri & Cie Druckgasschalter.
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 (enrdf_load_stackoverflow) * 1989-01-30 1990-08-13
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
CA2070652A1 (en) * 1989-12-05 1991-06-06 David P. Eppinger 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
KR102491405B1 (ko) * 2016-08-26 2023-01-20 히타치 에너지 스위처랜드 아게 스위치 및 스위치를 분리하기 위한 방법

Family Cites Families (6)

* 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
BE389067A (enrdf_load_stackoverflow) * 1932-06-08
US2439952A (en) * 1944-08-31 1948-04-20 Westinghouse Electric Corp Circuit interrupter
US4249051A (en) * 1978-03-27 1981-02-03 Electric Power Research Institute Arc spinner interrupter with contact follower
FR2422243A1 (fr) * 1978-04-07 1979-11-02 Alsthom Cgee Disjoncteur a haute tension
FR2464550A1 (fr) * 1979-09-03 1981-03-06 Merlin Gerin Interrupteur a soufflage magnetique en rotation de l'arc

Also Published As

Publication number Publication date
DE3262053D1 (en) 1985-03-07
EP0075341A1 (de) 1983-03-30
JPH0354412B2 (enrdf_load_stackoverflow) 1991-08-20
US4463230A (en) 1984-07-31
YU173582A (en) 1985-03-20
JPS5887719A (ja) 1983-05-25

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