EP0621615A1 - Disjoncteur basse tension - Google Patents

Disjoncteur basse tension Download PDF

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Publication number
EP0621615A1
EP0621615A1 EP94105111A EP94105111A EP0621615A1 EP 0621615 A1 EP0621615 A1 EP 0621615A1 EP 94105111 A EP94105111 A EP 94105111A EP 94105111 A EP94105111 A EP 94105111A EP 0621615 A1 EP0621615 A1 EP 0621615A1
Authority
EP
European Patent Office
Prior art keywords
arc
plate
contact
power supply
fixed contact
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
EP94105111A
Other languages
German (de)
English (en)
Other versions
EP0621615B1 (fr
Inventor
Francesco Perdoncin
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.)
ABB SACE SpA
Original Assignee
ABB SACE SpA
SACE SpA
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 ABB SACE SpA, SACE SpA filed Critical ABB SACE SpA
Publication of EP0621615A1 publication Critical patent/EP0621615A1/fr
Application granted granted Critical
Publication of EP0621615B1 publication Critical patent/EP0621615B1/fr
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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate

Definitions

  • the invention is based on a low-voltage switch with a fixed and a movable contact and with an arc quenching chamber accommodating the two contacts and a quenching plate package, in which an extension piece is attached to the fixed contact, which extends in the direction of the quenching plate package and serves to accommodate an arc base interacts with an insulating part.
  • a switch of the type mentioned is described for example in DE 37 29 504 A1.
  • This switch has a fixed contact with a U-shaped curved power supply, the end of which carries a fixed contact element and is guided into an arc quenching chamber has an extension piece extending to a quenching plate package for receiving a base point of a switching arc.
  • the power supply is partially covered with insulating material. This ensures that the switching arc runs more easily on the extension piece and is extinguished faster at the same time.
  • the invention as defined in claim 1, is based on the object of increasing the switching power in a switch of the type mentioned.
  • the switch according to the invention is characterized by a low contact erosion and low wear of the arcing chamber at high switching power. This is achieved in that the extinguishing gas emerging from the insulating part under the influence of an arc flows in a targeted manner in the direction of the quenching plate package, and that the base point of the switching arc, which is rooted at the fixed contact, is guided particularly quickly into the quenching plate stack by this gas flow and by the force of the magnetic field of the current to be switched off.
  • the multi-pole switch shown in Figure 1 has a housing 1 made of insulating material.
  • the housing 1 comprises - separately for each pole - a predominantly plate-shaped, fixed contact 2 and a movable contact 3 which can be pivoted about a fixed axis 4 and which is connected to a flexible power connection.
  • Both contacts 2, 3 are in an arc quenching chamber 5 containing a quenching plate package 6 guided.
  • a recess 23 provided in the housing 1 enables a pivoting movement of the movable contact 3.
  • the size of the recess 23 is advantageously chosen such that it is hardly larger than the thickness of the movable contact 3.
  • the fixed contact 2 which can be seen more clearly from FIGS. 2 and 3, has a power supply with an opening 10 which is delimited by two legs 11 of equal size and a yoke 12.
  • the supplied current I is divided at the opening 10.
  • Half the current I / 2 flows through each leg 11.
  • the two streams I / 2 are brought together again in the yoke 12.
  • the yoke 12 continues in a contact tongue 13 which is slightly inclined with respect to the plate-shaped fixed contact, typically by approximately 10 to 30 °, and which is directed into the arc quenching chamber 5.
  • the opening 10 creates two turns in the current supply of the fixed contact 2.
  • the magnetic field generated by the current I / 2 flowing in these turns acts on an arc-extinguishing chamber on the side of the contact tongue 13 in an electrically conductive manner, for example by riveting and / or soldering Extension piece 14, which extends the contact tongue 13 in the direction of the baffle plate 6 and together with the contact tongue 13 a plate-shaped Conductor forms.
  • the extension piece 14 is formed on the base of the contact tongue 13 on the yoke 12 as a contact element 7. In the switched-on position of the switch, this contact element 7 contacts an unspecified contact element of the movable contact 3.
  • An insulating part 15 made of a material that emits extinguishing gas under the influence of an arc, such as preferably polytetrafluoroethylene, polyamide or polyoxymethylene, forms a side wall of the arc extinguishing chamber 5 that shields the current supply of the fixed contact 2 against the thermal effect of a switching arc.
  • the insulating part 15 has an opening 16 through which the formed by the contact tongue 13 and the extension piece 14 is passed. The lateral boundary surfaces of the opening 16 rest on the narrow side surfaces of the contact tongue 13 and thus make it more difficult for gas to pass from the arc quenching chamber 5.
  • the insulating part 15 On the arc extinguishing chamber side, the insulating part 15 has two wedge-shaped lugs 18.
  • the tips 19 of the lugs 18 start in the area of the contact element 7.
  • a section 20 of the bridge of the nose which attaches to the tip 19 of each nose 18 rises at an angle corresponding to the inclination of the contact tongue 13.
  • the bridge of the nose Above the contact element 7 in the end section of the extension piece 14, the bridge of the nose has a section which is formed parallel to the plate-shaped part of the fixed contact 2 and which is increasingly moving away from the part of the extension piece 14 which is guided through the opening 16.
  • the two sections 20 of the lugs 18 and a part 17 of the insulating part 15 connecting the two lugs at their tips 19 protrude considerably beyond the contact element 7 and a section of the extension piece 14 adjoining the contact element 7 and thus form a groove-shaped depression 21, the base of which is from the contact element 7 and the adjoining section of the extension piece 14 is formed Fig.1).
  • the function of the switch according to the invention is now as follows: In the switched-on state, the current I flows in a current path, which leads from the current supply of the fixed contact 2 with the two legs 11 and the contact tongue 13 via the contact element 7 and the movable contact 3 to the flexible current connection of the movable contact.
  • the current I at the opening 10 in the two U-shaped legs 11 is divided into two half-size currents I / 2 flowing parallel to one another.
  • the two currents I / 2 are brought together again in the yoke 12 and conducted in the contact tongue 13 as current -I with a practically reversed direction of direction relative to the current I running in the plate-shaped part of the current supply to the contact element 7.
  • Each of the two legs 11 is in each case part of one of two windings provided in the power supply to the contact element 7, in which the contact tongue 13 is also contained.
  • the contact tongue 13 with the contact element 7 and the movable contact 3 form an upwardly extending loop in this current path.
  • the movable contact 3 When switched off, the movable contact 3 is pivoted to the right into the position shown in FIG. 1 and an arc is formed which is based on the contact element 7 and the contact element (not shown) of the movable contact 3.
  • the swiveling movement is supported by the magnetic field of the current to be switched off, which widens the loop formed by the contact tongue 13, the arc and the movable contact 3 and thereby leads the movable contact 3 to the right.
  • the magnetic field of the current flowing in the loop drives the arc to the arc stack 6.
  • the base point of the arc burning on the contact element 7 also heats up the surrounding material of the insulating part 15 in the region of the lugs 18 and the connecting part 17, whereby this material releases extinguishing gas. Because the base and a part of the arc starting at the base point is practically surrounded by insulating material, the arc releases a large part of its energy to the insulating material. In this way, relatively large amounts of extinguishing gas are formed from the insulating part 15 even with small flows. At the same time, it is ensured that this quenching gas has a preferential flow directed towards the quenching plate packet 6, which drives the base point of the arc rooted on the contact element 7 into the extension piece 14.
  • a third force on the arc exerts the magnetic field of the current flowing through the two windings provided in the current supply of the fixed contact 2. This field supports the quenching gas flow when the arc base point is shifted from the contact element 7 to the extension piece 14.
  • the combined action of these forces leads the arc very quickly and safely into the quenching plate packet 6 and extinguishes it there.
  • the extinguishing gas outgassed from the insulating part 15 ensures that the extinguishing sections delimited by the extinguishing plates are free of ionized particles, so that the extinguishing sections solidify rapidly very rapidly and, even when switching high currents in the n / a range, undesired reignitions are eliminated.
  • it is particularly advantageous here that contact erosion and wear of the arc quenching chamber 6 are drastically reduced.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP94105111A 1993-04-21 1994-03-31 Disjoncteur basse tension Expired - Lifetime EP0621615B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT93MI000789A IT1264164B1 (it) 1993-04-21 1993-04-21 Interruttore di bassa tensione in scatola isolante
ITMI930789 1993-04-21

Publications (2)

Publication Number Publication Date
EP0621615A1 true EP0621615A1 (fr) 1994-10-26
EP0621615B1 EP0621615B1 (fr) 1997-02-12

Family

ID=11365838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94105111A Expired - Lifetime EP0621615B1 (fr) 1993-04-21 1994-03-31 Disjoncteur basse tension

Country Status (6)

Country Link
US (1) US5475193A (fr)
EP (1) EP0621615B1 (fr)
DE (2) DE4332546A1 (fr)
ES (1) ES2102088T3 (fr)
IT (1) IT1264164B1 (fr)
ZA (1) ZA942756B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1693870A2 (fr) * 2005-02-17 2006-08-23 ABB PATENT GmbH Appareil électrique avec un espace de préchambre, une tôle de conduction d'arc et un dispositif d'extinction d'arc pour limiter le courant
EP2048678A3 (fr) * 2007-10-09 2010-02-17 Eaton Corporation Ensemble d'isolant gazogène et ensemble de conducteur et appareil de commutation électrique utilisant la même chose
US8237074B2 (en) 2008-03-05 2012-08-07 Moeller Gebäudeautomation GmbH Switching device
JP2017539059A (ja) * 2015-02-03 2017-12-28 佛山市川東磁電股▲ふん▼有限公司Ｃｈｕａｎｄｏｎｇ Ｍａｇｎｅｔｉｃ Ｅｌｅｃｔｒｏｎｉｃ Ｃｏ．，Ｌｔｄ 新型磁気スイッチ

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5734547A (en) * 1995-02-13 1998-03-31 Iversen; Arthur H. Power switchgear
US5761025A (en) * 1995-02-13 1998-06-02 Iversen; Arthur H. Low cost power switchgear
FR2788372B1 (fr) * 1999-01-11 2001-02-23 Schneider Electric Ind Sa Chambre d'extinction d'arc dont les parois laterales sont en materiau composite, et appareillage de coupure comportant une telle chambre
US6392512B1 (en) 1999-11-05 2002-05-21 Siemens Energy & Automation, Inc. Stationary line bus assembly
IT1314358B1 (it) * 1999-12-31 2002-12-09 Abb Ricerca Spa Camera d'arco per interruttori di bassa tensione
FR2803687B1 (fr) * 2000-01-07 2002-02-22 Schneider Electric Ind Sa Pole pour disjoncteur electrique, muni d'une chambre d'extinction d'arc large
US6926547B2 (en) 2001-07-06 2005-08-09 Delphi Technologies, Inc. Electrical connector
US7716816B2 (en) * 2006-09-22 2010-05-18 Rockwell Automation Technologies, Inc. Method of manufacturing a switch assembly
US7551050B2 (en) * 2006-09-22 2009-06-23 Rockwell Automation Technologies, Inc. Contactor assembly with arc steering system
JP5856426B2 (ja) * 2011-10-07 2016-02-09 富士電機株式会社 接点装置及びこれを使用した電磁接触器
FR3040238B1 (fr) * 2015-08-18 2019-01-25 Schneider Electric Industries Sas Disjoncteur electrique
EP3772742A1 (fr) * 2019-08-05 2021-02-10 ABB S.p.A. Pôle de commutation basse tension
FR3107395B1 (fr) * 2020-02-19 2022-12-30 Socomec Sa Chambre de coupure à soufflage magnétique pour un appareil de coupure électrique et appareil de coupure électrique équipé d’une telle chambre

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467937A (en) * 1944-04-08 1949-04-19 Square D Co Arc suppressor
DE1765051B2 (de) * 1968-03-26 1977-01-27 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Elektrische kontaktanordnung zur raschen lichtbogenableitung auf fest vorgegebener bahn
US4409444A (en) * 1980-12-09 1983-10-11 Mitsubishi Denki Kabushiki Kaisha Circuit breaker
DE3729504A1 (de) * 1986-09-16 1988-03-24 Mitsubishi Electric Corp Strompfadunterbrecher
DE3818864A1 (de) * 1988-06-03 1989-12-14 Kloeckner Moeller Elektrizit Stromunterbrecher mit lichtbogenbegrenzungseinrichtung
EP0395326A1 (fr) * 1989-04-25 1990-10-31 Eaton Corporation Loquet en berceau en deux pièces, barrière de levier bloquant la pièce d'insertion et verrouillage de couvercle pour un disjoncteur
US4970481A (en) * 1989-11-13 1990-11-13 General Electric Company Current limiting circuit breaker contact arm configuration
EP0496478A2 (fr) * 1989-02-22 1992-07-29 Square D Company Borne de ligne et chambre d'arc à plaques barrières pour disjoncteur

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1066259B (fr) * 1959-10-01
US3818165A (en) * 1972-06-09 1974-06-18 Gen Electric Electric circuit interrupter
GB1476241A (en) * 1973-05-29 1977-06-10 Square D Co Arc-extinguishing materials
US4158827A (en) * 1977-06-21 1979-06-19 Westinghouse Electric Corp. Current limiting contactor
US4513267A (en) * 1983-03-28 1985-04-23 Siemens-Allis, Inc. Stationary contact strap to achieve a current limiting blow-off effect
EP0206249B1 (fr) * 1985-05-10 1991-09-11 Mitsubishi Denki Kabushiki Kaisha Coupe-circuit
US4654490A (en) * 1986-03-03 1987-03-31 Westinghouse Electric Corp. Reverse loop circuit breaker with high impedance stationary conductor
US4654491A (en) * 1986-03-03 1987-03-31 Westinghouse Electric Corp. Circuit breaker with contact support and arc runner
JPH0628767Y2 (ja) * 1986-09-11 1994-08-03 三菱電機株式会社 回路しや断器
IT208624Z2 (it) * 1986-12-11 1988-05-28 Sace Spa Camera d'arco, in particolare per interruttori di bassa tensione.!
JPH0631635Y2 (ja) * 1987-04-21 1994-08-22 富士電機株式会社 配線用遮断器
DE3824025C2 (de) * 1988-07-15 1994-02-17 Asea Brown Boveri Niederspannungsschaltgerät
US5206614A (en) * 1991-03-28 1993-04-27 Westinghouse Electric Corp. Line conductor gasket
US5268661A (en) * 1992-09-18 1993-12-07 Westinghouse Electric Corp. Current throttle technique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467937A (en) * 1944-04-08 1949-04-19 Square D Co Arc suppressor
DE1765051B2 (de) * 1968-03-26 1977-01-27 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Elektrische kontaktanordnung zur raschen lichtbogenableitung auf fest vorgegebener bahn
US4409444A (en) * 1980-12-09 1983-10-11 Mitsubishi Denki Kabushiki Kaisha Circuit breaker
DE3729504A1 (de) * 1986-09-16 1988-03-24 Mitsubishi Electric Corp Strompfadunterbrecher
DE3818864A1 (de) * 1988-06-03 1989-12-14 Kloeckner Moeller Elektrizit Stromunterbrecher mit lichtbogenbegrenzungseinrichtung
EP0496478A2 (fr) * 1989-02-22 1992-07-29 Square D Company Borne de ligne et chambre d'arc à plaques barrières pour disjoncteur
EP0395326A1 (fr) * 1989-04-25 1990-10-31 Eaton Corporation Loquet en berceau en deux pièces, barrière de levier bloquant la pièce d'insertion et verrouillage de couvercle pour un disjoncteur
US4970481A (en) * 1989-11-13 1990-11-13 General Electric Company Current limiting circuit breaker contact arm configuration

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1693870A2 (fr) * 2005-02-17 2006-08-23 ABB PATENT GmbH Appareil électrique avec un espace de préchambre, une tôle de conduction d'arc et un dispositif d'extinction d'arc pour limiter le courant
EP1693870A3 (fr) * 2005-02-17 2009-01-21 ABB PATENT GmbH Appareil électrique avec un espace de préchambre, une tôle de conduction d'arc et un dispositif d'extinction d'arc pour limiter le courant
EP2048678A3 (fr) * 2007-10-09 2010-02-17 Eaton Corporation Ensemble d'isolant gazogène et ensemble de conducteur et appareil de commutation électrique utilisant la même chose
US8237074B2 (en) 2008-03-05 2012-08-07 Moeller Gebäudeautomation GmbH Switching device
JP2017539059A (ja) * 2015-02-03 2017-12-28 佛山市川東磁電股▲ふん▼有限公司Ｃｈｕａｎｄｏｎｇ Ｍａｇｎｅｔｉｃ Ｅｌｅｃｔｒｏｎｉｃ Ｃｏ．，Ｌｔｄ 新型磁気スイッチ

Also Published As

Publication number Publication date
DE4332546A1 (de) 1994-10-27
ITMI930789A0 (it) 1993-04-21
DE59401787D1 (de) 1997-03-27
EP0621615B1 (fr) 1997-02-12
ZA942756B (en) 1996-02-16
IT1264164B1 (it) 1996-09-17
ITMI930789A1 (it) 1994-10-21
ES2102088T3 (es) 1997-07-16
US5475193A (en) 1995-12-12

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