EP1548772A1 - Chambre de soufflage pour un disjoncteur-protecteur possèdant une double coupure - Google Patents

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

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Publication number
EP1548772A1
EP1548772A1 EP03405920A EP03405920A EP1548772A1 EP 1548772 A1 EP1548772 A1 EP 1548772A1 EP 03405920 A EP03405920 A EP 03405920A EP 03405920 A EP03405920 A EP 03405920A EP 1548772 A1 EP1548772 A1 EP 1548772A1
Authority
EP
European Patent Office
Prior art keywords
arc
bridge
loop
quenching device
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.)
Withdrawn
Application number
EP03405920A
Other languages
German (de)
English (en)
Other versions
EP1548772A8 (fr
Inventor
Gerhard Schneider
Tudor Baiatu
Torsten Edler
Frank Wentzler
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 Holding AG
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 Holding AG, ABB Schweiz AG filed Critical ABB Schweiz Holding AG
Priority to EP03405920A priority Critical patent/EP1548772A1/fr
Publication of EP1548772A1 publication Critical patent/EP1548772A1/fr
Publication of EP1548772A8 publication Critical patent/EP1548772A8/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01H9/44—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
    • 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 642 199 a protective circuit with a reversible short-circuit current limiter for a DC link of an inverter circuit is shown.
  • the short circuit current limiter has a PTC thermistor PTC, ie with a positive temperature coefficient of electrical resistance.
  • 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 .
  • 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 optimized separately. 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 in one only during a shutdown of the Circuit breaker current-carrying and comprising the two arc Arc extinguishing a asymmetrical with respect to the extinguishing chamber partition wall install trained blow loop.
  • This blow loop is so the Arc guide rails, which in turn are symmetrical with respect to Extinguishing chamber partition are arranged and on which the foot of the arc migrate, not assigned in a comparable mass, i. the two arcs are not blown or accelerated to the same extent by the blow loop.
  • the blown loop 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 blow loop is not in a vertical to the extinguishing chamber partition wall, two-dimensional surface, i. it also includes a component parallel to this partition. This will be for the return or Completion of the blown loop gained degrees of freedom, and the overall blowing effect All sections of the blow loop can be adjusted more easily.
  • 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.
  • a PTC thermistor i. a material with positive nonlinear temperature coefficient of resistivity.
  • Suitable metals such as Ni, Co, Fe, metallic alloys based on Ni, Co, Fe and NiCr, NiMn, NiFe, NiCrMn, NiCo, NiCoFe, CoFe, CrAlFe.
  • a magnetic shield the arc area including the arc guide rail provided. This will do that magnetic field generated by the arc extinguishing circuit and thereby caused Self-inflated strengthens.
  • the magnetic interaction between the both oppositely current-carrying arc restricted is also arranged parallel to the light guide rail section of the blower loop in the Shielded arc area included.
  • blower loop according to the invention is asymmetrical, a second blown loop is formed both geometrically and with respect to the current flow direction parallel to a second arranged on the bridge side arc run rail. This also increases the for the magnetic blowing effect on the second arc and the current the arc driving force.
  • the two blow loops are preferred connected in parallel and thus only ever about half the turn-off.
  • Fig.1 is an oblique view of 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 arc extinguishing chamber assigned, which are separated by a not shown, in the space between the two splitter stacks 71,72 thinking extinguishing chamber partition.
  • Arc running rails 61,62 are the two connecting conductors 11,12 not mirror image formed with respect to this extinguishing chamber partition.
  • terminal-side arc runners 51,52 favors, migrates a first arc between the first terminal side arc runner 51 and the first one bridge-side arc runner 61 in the direction of a first Arc splitter stack 71, while a second arc between the second terminal side arc runner 52 and the second bridge side Arc track 62 moves toward a second arc splitter stack 72.
  • the arcs are thus generated by the self-generated magnetic fields along the arc runners in extinguishing chambers urged on the quenching plates cooled, divided into partial arcs and deleted.
  • first blow loop 81 in the form of a Wire loop or provided as a band-shaped stamped part.
  • first blower loop 81 flows at least part of the turn-off current from the first to the second arc through it first blower loop 81.
  • It comprises at least one Lorentz section 811, which geometrically arranged parallel to the first bridge-side arc run rail 61 and in which the current flow direction is the same as in the adjacent one Arc running rail 61.
  • the connecting conductors 11,12 which of the terminal contacts of the Switch lead to the fixed contacts 21,22, not symmetrical with respect to Erschkammennennwand are formed, is also the first blower loop 81 in this regard not symmetrical, but takes on the arrangement of said connecting conductors Consideration.
  • the Lorentz portion 811 of the first blown loop 81 over the entire length of the first bridge-side arc runner 61 to this parallel.
  • the blown loop 81 is completed by a return section 812, which according to the invention is not comparable with the Lorentz section 811 Extent parallel to the second bridge-side arc runner rail 62 is arranged.
  • the return 812 is located largely on the same side of the Extinguishing chamber partition wall as the Lorentz section 811, but not in the by the vertical projection of the Lorentz section 811 onto the extinguishing chamber partition wall defined area.
  • FIG. 2 shows a first shielding jacket 91 with a U-shaped cross-section.
  • a magnetically active material such as iron or steel
  • the first bridge side Arc running rail 61 and the Lorentz section 811 of the blower loop 81 includes.
  • a second shielding jacket 92 may be placed around the second arc runner 62.
  • the blown loop is preferred with turn-off current limiting properties fitted.
  • it may comprise a suitable inductance, which in shape a separate coil or as one or more additional loops is realized. Become these additional loops in sections led parallel to the Lorentz section, multiplied the magnetically effective current strength and increases the blowing effect on the Arc in addition.
  • a current limiting behavior by the Material selection can be achieved, all conductors come with an electric Resistance in question, which increases with increasing current, and below especially as a PTC thermistor or PTC resistor (positive temperature coefficient) Head known and mentioned above alloys or ceramic materials in Question.
  • PTC thermistor or PTC resistor positive temperature coefficient
  • inductive-geometric and resistive-material-dependent Variants can also be combined. It is important that the beginning or Cold resistance is not too high and the commutation of the arcs on the Bridge side rail contacts 41,42 and the associated training of the Arc extinguishing circuit is not obstructed.
  • FIG. 3 only the two arc rails 61,62 are shown, together with two electrically connected blow loops 81,82.
  • the first Bridge-side rail contact 41 performs a first
  • the first arc run rail 61 serving blower loop 81 to the second bridge-side rail contact 42 as already shown in the embodiment of FIG.
  • a second blower loop 82 between the rail contacts 41, 42 comprises a second Lorentz section 821, in which the current flows in parallel to the turn-off in the running rail 62.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
EP03405920A 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possèdant une double coupure Withdrawn EP1548772A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03405920A EP1548772A1 (fr) 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possèdant une double coupure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405920A EP1548772A1 (fr) 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possèdant une double coupure

Publications (2)

Publication Number Publication Date
EP1548772A1 true EP1548772A1 (fr) 2005-06-29
EP1548772A8 EP1548772A8 (fr) 2005-08-24

Family

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EP03405920A Withdrawn EP1548772A1 (fr) 2003-12-22 2003-12-22 Chambre de soufflage pour un disjoncteur-protecteur possèdant une double coupure

Country Status (1)

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EP (1) EP1548772A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2385537A1 (fr) 2010-05-05 2011-11-09 Siemens Aktiengesellschaft Disjoncteur à double coupure pour la surveillance d'un circuit électrique
DE102010019429A1 (de) 2010-05-05 2011-11-10 Siemens Aktiengesellschaft Lichtbogenlöscheinrichtung für ein Schutzschaltgerät sowie Schutzschaltgerät
FR2977067A1 (fr) * 2011-06-27 2012-12-28 Schneider Electric Ind Sas Dispositif de guidage de l'arc dans un appareil de protection electrique et appareil de protection electrique comportant un tel dispositif
EP2541574A1 (fr) 2011-07-01 2013-01-02 Siemens Aktiengesellschaft Disjoncteur électrique à double point de rupture
DE102011080525A1 (de) 2011-08-05 2013-02-07 Siemens Aktiengesellschaft Doppeltunterbrechendes Schutzschaltgerät
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
WO2013139870A1 (fr) * 2012-03-21 2013-09-26 Eaton Electrical Ip Gmbh & Co. Kg Commutateur cc sans chambres d'extinction d'arc
DE102012208573A1 (de) 2012-05-22 2013-11-28 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
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

Citations (3)

* 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
EP0255008A1 (fr) * 1986-07-28 1988-02-03 Asea Brown Boveri Aktiengesellschaft Disjoncteur de protection de ligne
EP0649155A1 (fr) * 1993-10-15 1995-04-19 Hager Electro S.A. Tôle de conduction double pour chambre de conduction d'arc de disjoncteur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0255008A1 (fr) * 1986-07-28 1988-02-03 Asea Brown Boveri Aktiengesellschaft Disjoncteur de protection de ligne
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 (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010019429B4 (de) 2010-05-05 2019-02-21 Siemens Aktiengesellschaft Lichtbogenlöscheinrichtung für ein Schutzschaltgerät sowie Schutzschaltgerät
DE102010019432A1 (de) 2010-05-05 2011-11-10 Siemens Aktiengesellschaft Doppelunterbrechendes Schutzschaltgerät zum Überwachen eines Stromkreises
DE102010019429A1 (de) 2010-05-05 2011-11-10 Siemens Aktiengesellschaft Lichtbogenlöscheinrichtung für ein Schutzschaltgerät sowie Schutzschaltgerät
EP2385537A1 (fr) 2010-05-05 2011-11-09 Siemens Aktiengesellschaft Disjoncteur à double coupure pour la surveillance d'un circuit électrique
FR2977067A1 (fr) * 2011-06-27 2012-12-28 Schneider Electric Ind Sas Dispositif de guidage de l'arc dans un appareil de protection electrique et appareil de protection electrique comportant un tel dispositif
EP2541574A1 (fr) 2011-07-01 2013-01-02 Siemens Aktiengesellschaft Disjoncteur électrique à double point de rupture
DE102011078524A1 (de) 2011-07-01 2013-01-03 Siemens Aktiengesellschaft Doppeltunterbrechendes Schutzschaltgerät
DE102011080525A1 (de) 2011-08-05 2013-02-07 Siemens Aktiengesellschaft Doppeltunterbrechendes Schutzschaltgerät
US8853586B2 (en) 2011-11-09 2014-10-07 Eaton Corporation Electrical switching apparatus including magnet assembly and first and second arc chambers
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
WO2013139870A1 (fr) * 2012-03-21 2013-09-26 Eaton Electrical Ip Gmbh & Co. Kg Commutateur cc sans chambres d'extinction d'arc
DE102012208573A1 (de) 2012-05-22 2013-11-28 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung und Schutzschaltgerät
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

Also Published As

Publication number Publication date
EP1548772A8 (fr) 2005-08-24

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