EP1376628A1 - Disjoncteur pour basse tension avec un double dispositif de contacts et arc électrique - Google Patents

Disjoncteur pour basse tension avec un double dispositif de contacts et arc électrique Download PDF

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Publication number
EP1376628A1
EP1376628A1 EP02014443A EP02014443A EP1376628A1 EP 1376628 A1 EP1376628 A1 EP 1376628A1 EP 02014443 A EP02014443 A EP 02014443A EP 02014443 A EP02014443 A EP 02014443A EP 1376628 A1 EP1376628 A1 EP 1376628A1
Authority
EP
European Patent Office
Prior art keywords
contact
electrically conductive
arc
quenching chamber
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.)
Withdrawn
Application number
EP02014443A
Other languages
German (de)
English (en)
Inventor
Mitja Koprivsek
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.)
ETI Elektroelement dd
Original Assignee
ETI Elektroelement dd
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 ETI Elektroelement dd filed Critical ETI Elektroelement dd
Priority to EP02014443A priority Critical patent/EP1376628A1/fr
Publication of EP1376628A1 publication Critical patent/EP1376628A1/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Withdrawn legal-status Critical Current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
    • H01H1/2041—Rotating bridge
    • 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
    • H01H9/465—Shunt circuit closed by transferring the arc onto an auxiliary electrode

Definitions

  • the invention relates to a low-voltage circuit breaker with a double Contacts arcing arrangement, which is a pivotable contact bridge with movable Contacts and arc quenching chambers located on a switch-off path of the first or the second movable contact are arranged, and one first and a second fixed contact, with which a: first electrically conductive Plate of the adjacent first or second arc quenching chamber electrically is conductively connected.
  • a low-voltage circuit breaker is known from the patent specification EP 0 591 074 B1 a double contact arc arrangement known.
  • the double contact-arc arrangement comprises a pivotable contact bridge with a first and a second movable contact and a first and a second arc quenching chamber, on a switch-off section of the first or the second movable Contact are arranged, and a first and a second fixed contact, with which a first electrically conductive plate of the adjacent first or second arc quenching chamber is electrically conductively connected.
  • Electrically conductive parts to which the first and second fixed contacts are attached are include a portion that conducts an electrical current to the pivotable Contact bridge has an electrodynamically repellent effect. The entire duration of the arc through it the two arc extinguishing channels and the two movable ones Contacts are gripped by the discharge, making it particularly easy to move the two Contacts causing a violent burning of the material.
  • the invention is based on the object, such as a double contact arc arrangement is to further develop the duration of the two partial arcs of both Shorten movable contacts on the swiveling contact bridge.
  • the low-voltage circuit breaker according to the invention with a double contact arc arrangement has been improved in a simple way so that the Duration of two partial arcs of both, attached to a swiveling contact bridge, Movable contacts was shortened and thereby the mass of the these two contacts became less when the burned material was switched off.
  • the electrical lifespan of the low-voltage circuit breaker was additional lengthened because the electric arc passes through the one and one other times is locked by the other lit sheet quenching chamber.
  • a low voltage circuit breaker is with one in overcurrent release 2, one Hold trigger mechanism 3 and a double contact arc assembly 1 provided (Fig. 1). If an electrical current I that in the low voltage circuit breaker from the terminal i through a first contact bar 11, one thereon attached first fixed contact c1, a first movable contact c2, a pivotable contact bridge 12, a second movable contact c2 ', a second fixed contact c1 ', which is attached to a second contact bar 11', through this contact bar 11 'and the overcurrent release 2 flows to a second connection terminal o, exceeds a certain value, the circuit through the low voltage circuit breaker interrupted.
  • the overcurrent release 2 acts by means of a mechanical connection f1 on the hold-release mechanism 3, but this acts on the pivotable contact bridge 12 by means of a mechanical connection f2 so that they move from the position shown in Fig. 1 towards one shown in Fig. 2 Arrow t begins to rotate. Switching on is achieved again by pressing a power button 4 by means of a mechanical connection f3 on the hold-release mechanism 3 acts to the pivotable contact bridge 12 in the in Fig. 1st bring the location shown back.
  • the double contact arc arrangement 1 is shown. It is from the pivotable contact bridge 12 with a first and a second movable Contact c2, c2 ', the first and second arc quenching chambers 13, 13' and the first and second fixed contacts c1, c1 'connected to the first and second contact slats 11, 11 'are attached.
  • the first and second fixed contacts c1, c1 ' are electrically conductive end plate in the other, on the opposite fixed contact c1 ', c1 arranged arc extinguishing chamber 13 ', 13 electrically connected.
  • a second or first electrically conductive tongue 114 ', 114 electrically connected in the first and the second arc quenching chamber 13, 13 '.
  • the electrically conductive Tongues 114 ', 114 are arranged in such a way that in the final phase the shutdown Pivoting movement of the pivotable contact bridge 12 closer to the tip of the tongue the first and the second movable contact c2, c2 'as one the first and the second movable contact c2, c2 'closest electrically conductive plate of the first and the second arc quenching chamber 13, 13 '.
  • the contact slats 11, 11 ', to which the fixed contacts c1, c1' are attached, are preferably carried out as follows.
  • On the first and second contact plate 11, 11 ' is a part 112 or a part 112', which is also the first electrically conductive plate of the first and the second arc quenching chamber 13 ', 13 forms.
  • part 113 and part 113 ' have also been erected, which is also the electrically conductive end plate of the second or the form the first arc quenching chamber 13 ', 13.
  • the electrically conductive tongues 114, 114 ' are erected.
  • the pivotable contact bridge 12 If the electrical current in the circuit exceeds a prescribed value, begins the pivotable contact bridge 12 under the influence of a torque because of the functioning of the mechanical connection f2 and the increased electrodynamic forces between the parts 111, 111 'of the contact slats 11, 11 'and the pivotable contact bridge 12 accelerate in the direction of arrow t rotate.
  • the electric arcs EA and EA 'between the opened contacts c1, c2 and c2 ', c1' become longer and move into the arc quenching chamber 13 or 13 '.
  • the developed electric arc EA runs between the first electrically conductive plate, which is preferably simply the part 112 of the first Contact bar 11 is movable through the arc quenching chamber 13 and the first Contact c2.
  • the developed electric arc EA ' runs between the second movable contact c2 'through the second sheet arc quenching chamber 13' and its first electrically conductive plate, which is preferably simply the part 112 'of the second Contact bar 11 'in the second arc quenching plate 13' is (Fig. 2).

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP02014443A 2002-06-28 2002-06-28 Disjoncteur pour basse tension avec un double dispositif de contacts et arc électrique Withdrawn EP1376628A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02014443A EP1376628A1 (fr) 2002-06-28 2002-06-28 Disjoncteur pour basse tension avec un double dispositif de contacts et arc électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02014443A EP1376628A1 (fr) 2002-06-28 2002-06-28 Disjoncteur pour basse tension avec un double dispositif de contacts et arc électrique

Publications (1)

Publication Number Publication Date
EP1376628A1 true EP1376628A1 (fr) 2004-01-02

Family

ID=29716869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02014443A Withdrawn EP1376628A1 (fr) 2002-06-28 2002-06-28 Disjoncteur pour basse tension avec un double dispositif de contacts et arc électrique

Country Status (1)

Country Link
EP (1) EP1376628A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006016273A1 (de) * 2006-03-31 2007-10-04 Siemens Ag Elektrisches Schaltgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1122431A (fr) * 1955-02-25 1956-09-06 Merlin Gerin Perfectionnements aux disjoncteurs à soufflage magnétique
EP0403328A1 (fr) * 1989-06-16 1990-12-19 Hager Electro S.A. Perfectionnement aux appareils électriques de coupure
EP0591074A1 (fr) * 1992-09-29 1994-04-06 Schneider Electric Sa Disjoncteur à boîtier moulé à contacts auxiliaires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1122431A (fr) * 1955-02-25 1956-09-06 Merlin Gerin Perfectionnements aux disjoncteurs à soufflage magnétique
EP0403328A1 (fr) * 1989-06-16 1990-12-19 Hager Electro S.A. Perfectionnement aux appareils électriques de coupure
EP0591074A1 (fr) * 1992-09-29 1994-04-06 Schneider Electric Sa Disjoncteur à boîtier moulé à contacts auxiliaires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006016273A1 (de) * 2006-03-31 2007-10-04 Siemens Ag Elektrisches Schaltgerät

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