EP1548773A1 - Chambre de soufflage pour un disjoncteur-protecteur possédant une double coupure - Google Patents

Chambre de soufflage pour un disjoncteur-protecteur possédant une double coupure Download PDF

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Publication number
EP1548773A1
EP1548773A1 EP03405921A EP03405921A EP1548773A1 EP 1548773 A1 EP1548773 A1 EP 1548773A1 EP 03405921 A EP03405921 A EP 03405921A EP 03405921 A EP03405921 A EP 03405921A EP 1548773 A1 EP1548773 A1 EP 1548773A1
Authority
EP
European Patent Office
Prior art keywords
arc
bridge
quenching device
magnetic
circuit breaker
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
EP03405921A
Other languages
German (de)
English (en)
Other versions
EP1548773B1 (fr
Inventor
Gerhard Schneider
Siegfried Mayer
Norbert Papok
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 Schweiz AG
Original Assignee
ABB Schweiz AG
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 Schweiz AG filed Critical ABB Schweiz AG
Priority to DE50309487T priority Critical patent/DE50309487D1/de
Priority to AT03405921T priority patent/ATE390700T1/de
Priority to ES03405921T priority patent/ES2302908T3/es
Priority to EP03405921A priority patent/EP1548773B1/fr
Priority to US11/007,213 priority patent/US7081596B2/en
Publication of EP1548773A1 publication Critical patent/EP1548773A1/fr
Application granted granted Critical
Publication of EP1548773B1 publication Critical patent/EP1548773B1/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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2066—Fork-shaped bridge; Two transversally connected contact arms bridging two fixed contacts
    • 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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • 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

Definitions

  • the present invention relates to the field of power switches for Low-voltage distribution networks. It relates to an arc quenching device for Circuit breaker with double break according to the preamble of patent claim 1.
  • installation switch-in switches serve the fast and easy Reliable protection of low-voltage cables, motors, apparatus and systems against the consequences of overload and short-circuit currents. They exhibit in the Generally a thermal actuator with a bimetal and a electromagnetic release with a coil and a punch on and off preferably a contact arrangement with double interruption.
  • a normal circuit breaker has a contact point, which consists of a fixed and a movable contact piece is formed.
  • the contact point is in one so-called pre-chamber, to which a quenching chamber with a Arc splitter stack connects.
  • the base points of the arc are of the fixed contact piece and the movable contact piece via arc guide rails passed to the arc splitter stack.
  • the arc widens immediately after the contact opening, and the inlet velocity of the arc in the Arc splitter stack is dependent on the so-called own blowing, i. the by the arc itself generated magnetic blowing field, the pressure conditions in the Arc, the shaping of the guide rails and the choice of contact material.
  • EP-A-0 212 661 is a current limiter for medium or high voltage applications described in which an arc between two arc guide rails runs away from a switch. Due to the special design of the low-inductive Guide rails, the resistance in the arc is significantly increased, so that a series-connected disconnector the circuit can be interrupted easily. To accelerate the arc movement, this is due to the turn-off current itself magnetic field generated by a magnetic core around one of the guide rails is appropriate.
  • Object of the present invention is in a circuit breaker with Double break the acceleration of the two by a shutdown movement of a Switching contact generated arc to optimize targeted. This task is done by an arc quenching device with the features of claim 1 and a Circuit breaker with the features of claim 10 solved.
  • advantageous Embodiments are evident from the dependent claims.
  • the core of the invention is, by a suitable magnetic sheath the magnetic fields in the arc and thus on the arc acting and this driving in the direction of the splitter stacks Lorentz force strengthen.
  • the arc moves faster, the contact erosion is reduces and the Abschalt advantageous horritively increased.
  • the inventive separate magnetic sheath need the arc guide itself no Magnetic properties have more and therefore can non-magnetic, the arc movement favoring copper are produced.
  • the magnetic jacket made of steel for example, is realized, by a one-piece, one-sided open molding with U-profile so on a bridge-side Arc running rail is slipped, that the arc space or the Antechamber is completed on three sides by the molding. That on the arc acting magnetic field of the current flowing in the arc run-off current, i. the so-called own blowing, is thereby reinforced.
  • a Easy to manufacture a molded part and onto the arc runner during the assembly process Attach is provided.
  • a blow loop inserted in a only during the Shutdown of the circuit breaker current-carrying and the two arc comprehensive arc extinguishing a blow loop inserted.
  • the latter is arranged in sections parallel to an arc track and is of a Flowed through which points in the same direction as the turn-off in the adjacent arc guide rail.
  • the U-shaped magnetic sheath comprises or preferably also surrounds this rail parallel Blassch securedabites.
  • the blown loop is geometrically or material technically with equipped with current-limiting features. Since the blown loop in nominal operation, i. When the switch contact is closed, no current flows, this affects the self-impedance the switch is not and hinders due to their low initial or cold resistance of a few m ⁇ also the commutation of the arc to the corresponding Arc run rails not. After commutation of both arcs is also the blow loop flows through current, as a result increases their impedance and limited the turn-off current.
  • the blow loop is formed so that Both arcs are favored to a similar extent, for example by a with respect to the extinguishing chamber partition symmetrical design of the blow loop or by two electrically connected in parallel, each associated with an arc Blassch secured.
  • each arc or two atria assigned a separate magnetic sheath, which at the same time as magnetic Shielding of the arcing space opposite to that in the other arcing space dominating magnetic fields.
  • the U-shaped magnetic shell is through a pre-chamber insulation made of Plexiglas, for example, from the actual arc chamber separated. This will cause the arc to roll over prevents metallic coat.
  • the insulation can outgassing properties have, i. Remove arc-extinguishing gases.
  • the pre-chamber insulation has a in the arc region protruding bulge to reduce the prechamber volume.
  • the Reduced volume will cause a pressure loss of the gases in the arc area counteracted and the arc prevented from broadening. especially the Feet of the arc remain compact and thereby heat the Arc guide rails, which is conducive to movement of the arc.
  • the bulge preferably has a V-shaped profile which extends in the direction of Extinguishing chamber opens and follows approximately the contour of the guide rails. This will ensured that the two arc base points move at the same speed and the Arc itself before entering the quenching chamber beyond its maximum, through the Distance of arc guide rails given length expands. So all are Splitter plates equally involved in the division and extinction of the arc.
  • Fig.1 shows in oblique view a section of a single or multi-pole Circuit breaker with two series-connected switching contacts per pole.
  • a first Terminal 10 leads through the coil of a short-circuit current release 100 and a first connection conductor 11 to a first fixed contact 21. This is in closed Switch position (not shown) in electrical contact with a first bridge contact 31 of a movable fork-shaped contact bridge 3.
  • a second bridge contact 32 of Contact bridge 3 is in closed switch position in contact with a second Fixed contact 22, which via a second connecting conductor 12 on to a not shown overcurrent release and leads to a second terminal. Both each formed by a fixed and bridge contact switching points is always a first or second pre-chamber 41,42 assigned.
  • the inventive magnetic Sheath 91 with U-shaped cross-section which consists of a magnetically effective Material such as iron or steel preferably as a one-piece shielding plate is arranged so that it is the arc space, which between the first arc guide rails 51,61, laterally closes.
  • a back 911 of the Jacket is located along the first bridge-side arc guide rail 61, while the side surfaces 912 of the shell towards the first connection side Arc guide rail 51 extend.
  • the magnetic jacket 91 bundles this Arc magnetic field and drives the arc in addition in the direction of Chutes.
  • each of the two prechambers 41, 42 is a separate one magnetic jacket 91.92 assigned. This will change the arc area between the both arc guide rails 51, 61; 52.61 magnetic with respect to the outside space and in particular with respect to the other prechamber 42; 41 shielded.
  • Fig.1 between the first bridge-side running rail 61 and the second bridge-side Running rail 62, a first blower loop 81 is provided. In the event of triggering flows Abschaltstrom from the first to the second arc through this first blower loop 81.
  • the blower loop 81 is preferably equipped with turn-off current limiting properties.
  • a current-limiting behavior can be achieved, for example, by the selection of materials, all conductors with an electrical resistance in question, which increases with increasing current, and including in particular the known as PTC resistor (positive temperature coefficient) metallic alloys based on Ni, Co, Fe, such as NiCr, NiMn, NiFe, NiCrMn, NiCo, NiCoFe, CoFe, CrAlFe, or ceramic materials.
  • PTC thermistor is based on a polymer composite whose polymer matrix is filled with a mixture of carbon, a metal such as Ni, and a boride, silicide, oxide or carbide such as TiC 2 , TiB 2 , MoSi 2 , V 2 O 3 . It is important that the initial or cold resistance is not too high and the commutation of the arcs on the bridge-side rails 61,62 and the concomitant training of the arc extinguishing circuit is not hindered.
  • Fig.3 a section through the first pre-chamber 41 is shown, whereby from the first magnetic cladding 91 only the cut surface of his back 911 is visible.
  • the arc running properties are strongly dependent on the contour of the arc guide rails 51.61 dependent. Due to the apparent narrowing between the upper and lower Guide rail over a large part of the antechamber, the arc is optimal accelerated. Since in the widening of the guide rails 51, 61 the magnetic suction effect is already effective by the quenching plates 71 of magnetic material, is a Stability of the arc on the arc guide rails prevented and a instantaneous entry of the same possible.
  • Prechamber insulation 411 Between the guide rails 51,61 and the magnetic jacket 91 is a Prechamber insulation 411, which has substantially the same cross section as the cladding 91 and this isolated from the arc region.
  • a prechamber insulation as Injection molded part is suitably introduced before the assembly of the shell in this or slipped over the guardrails.
  • a bulge 412 within the prechamber insulation directs the ionized gases on the guide rails, which are heated by the gases and let the arc base point run.
  • the bulge 412 reduces the Distance perpendicular to the sectional plane of Figure 3 between the side surfaces of the insulation, i.e. the clear width of the arc chamber, by 30 to 50%.
  • the bulge according to 3 has the shape of an elongated elevation, which is V-like in the direction of the Löschblechwovene 71 opens.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP03405921A 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possédant une double coupure Expired - Lifetime EP1548773B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE50309487T DE50309487D1 (de) 2003-12-22 2003-12-22 Lichtbogenlöscheinrichtung für Schutzschalter mit Doppelunterbrechung
AT03405921T ATE390700T1 (de) 2003-12-22 2003-12-22 Lichtbogenlöscheinrichtung für schutzschalter mit doppelunterbrechung
ES03405921T ES2302908T3 (es) 2003-12-22 2003-12-22 Dispositivo de extincion de arco electrico para interruptores de proteccion con interrupcion doble.
EP03405921A EP1548773B1 (fr) 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possédant une double coupure
US11/007,213 US7081596B2 (en) 2003-12-22 2004-12-09 Arc-quenching device for circuit breakers having double-break contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405921A EP1548773B1 (fr) 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possédant une double coupure

Publications (2)

Publication Number Publication Date
EP1548773A1 true EP1548773A1 (fr) 2005-06-29
EP1548773B1 EP1548773B1 (fr) 2008-03-26

Family

ID=34530863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405921A Expired - Lifetime EP1548773B1 (fr) 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possédant une double coupure

Country Status (5)

Country Link
US (1) US7081596B2 (fr)
EP (1) EP1548773B1 (fr)
AT (1) ATE390700T1 (fr)
DE (1) DE50309487D1 (fr)
ES (1) ES2302908T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9076606B2 (en) 2011-11-04 2015-07-07 Abb Schweiz Ag Magnet arrangement for a low-voltage circuit-breaker

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007303B4 (de) * 2005-02-17 2013-03-21 Abb Ag Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Lichtbogenleitschienen und strombegrenzender Lichtbogenlöscheinrichtung
DE102006026064B4 (de) * 2006-06-03 2008-06-05 Moeller Gmbh Elektrische Schaltanordnung und Montageverfahren
US7551050B2 (en) * 2006-09-22 2009-06-23 Rockwell Automation Technologies, Inc. Contactor assembly with arc steering system
US7716816B2 (en) 2006-09-22 2010-05-18 Rockwell Automation Technologies, Inc. Method of manufacturing a switch assembly
DE102009023556B4 (de) * 2009-05-30 2012-01-19 Abb Ag Elektrisches Schaltgerät mit einem thermischen Auslöser
US8822866B2 (en) 2010-04-19 2014-09-02 Carling Technologies, Inc. Circuit interrupter with enhanced arc quenching capabilities
WO2013070465A1 (fr) * 2011-11-09 2013-05-16 Eaton Corporation Appareil de commutation électrique comprenant un ensemble aimant et des première et seconde chambres d'arc
DE102012212236A1 (de) * 2012-07-12 2014-01-16 Siemens Aktiengesellschaft Schutzschaltgerät und Magnetjoch
US8809722B2 (en) * 2012-10-11 2014-08-19 Siemens Industry, Inc. Circuit breaker with translating electrical contact, circuit breaker electrical contact assemblies, and operational methods
US9343251B2 (en) 2013-10-30 2016-05-17 Eaton Corporation Bi-directional direct current electrical switching apparatus including small permanent magnets on ferromagnetic side members and one set of arc splitter plates
FR3023057B1 (fr) * 2014-06-30 2016-07-22 Hager-Electro Sas Declencheur magnetothermique.
US10650993B1 (en) * 2019-03-19 2020-05-12 Siemens Industry, Inc. Circuit breaker with enhanced arc extinguishing chamber
CN111755299B (zh) * 2019-03-29 2022-07-05 Ls产电株式会社 配线用断路器的灭弧装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255016A1 (fr) * 1986-07-31 1988-02-03 Siemens Aktiengesellschaft Elément interrupteur limitant le courant
EP0649155A1 (fr) * 1993-10-15 1995-04-19 Hager Electro S.A. Tôle de conduction double pour chambre de conduction d'arc de disjoncteur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743720A (en) * 1985-11-25 1988-05-10 Matsushita Electric Works, Ltd. Current limiting circuit interrupter
US4656446A (en) * 1985-12-17 1987-04-07 Westinghouse Electric Corp. Current limiting circuit breaker with series double break contact system per pole
JPH071657B2 (ja) * 1989-09-18 1995-01-11 三菱電機株式会社 回路遮断器
US5694098A (en) * 1996-05-20 1997-12-02 Eaton Corporation Rate of current rise sensitive slot motor and switching apparatus having current limiting contact arrangement incorporating said slot motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255016A1 (fr) * 1986-07-31 1988-02-03 Siemens Aktiengesellschaft Elément interrupteur limitant le courant
EP0649155A1 (fr) * 1993-10-15 1995-04-19 Hager Electro S.A. Tôle de conduction double pour chambre de conduction d'arc de disjoncteur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9076606B2 (en) 2011-11-04 2015-07-07 Abb Schweiz Ag Magnet arrangement for a low-voltage circuit-breaker

Also Published As

Publication number Publication date
DE50309487D1 (de) 2008-05-08
ES2302908T3 (es) 2008-08-01
EP1548773B1 (fr) 2008-03-26
US7081596B2 (en) 2006-07-25
ATE390700T1 (de) 2008-04-15
US20050150870A1 (en) 2005-07-14

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