EP1374263A1 - Montage pour disjoncteur de puissance basse tension - Google Patents

Montage pour disjoncteur de puissance basse tension

Info

Publication number
EP1374263A1
EP1374263A1 EP02724107A EP02724107A EP1374263A1 EP 1374263 A1 EP1374263 A1 EP 1374263A1 EP 02724107 A EP02724107 A EP 02724107A EP 02724107 A EP02724107 A EP 02724107A EP 1374263 A1 EP1374263 A1 EP 1374263A1
Authority
EP
European Patent Office
Prior art keywords
contact
levers
switching
movable
carrier
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
EP02724107A
Other languages
German (de)
English (en)
Other versions
EP1374263B1 (fr
Inventor
Günter SEIDLER-STAHL;
Detlev Schmidt
Sezai TÜRKMEN
Michael Sebekow
Michael Bach
Ingo Thiede
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1374263A1 publication Critical patent/EP1374263A1/fr
Application granted granted Critical
Publication of EP1374263B1 publication Critical patent/EP1374263B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars

Definitions

  • the invention relates to a switching arrangement for low-voltage circuit breakers with a high rated current, which essentially comprises movable switching contacts arranged on a movable contact carrier, fixed switching contacts and a device for cooling, deionizing and extinguishing the switching arc.
  • Low-voltage circuit breakers with a high rated current have a physically very wide contact system due to their function. This depends on the continuous current of the switch and not on its switching capacity, which is generally the same for all switches, regardless of their nominal current, and is dimensioned at a maximum of about 100 kA.
  • the rail cross-section and thus the width of the busbars and the contact system are therefore dimensioned according to the continuous current.
  • Commutation of the current causes a transition of the current from the main contact to the pre-contact. This results in a low continuous current heat, because the continuous current is led through the main contacts, which interact with the fixed counter contacts of the switch and not through during the switching process
  • Arcs are claimed. These main contacts are fire-proof and therefore retain a good surface, which half their contact resistance and thus the continuous current heating is low.
  • At least one movable arcing contact is provided, which is arranged between the end of at least one contact finger and the movable main contact.
  • This Movable arcing contacts work with a fixed one
  • Arcing contact together which is designed so that the arc is centered with respect to the center axis of the switching pole. This means that, as can be seen in particular in FIG. 2 of the patent specification, it is designed to be central and narrower than the fixed main contact.
  • Other arrangements have movable contacts in which not all contact levers are provided with pre-contacts. These contact levers, which are not provided with pre-contacts, are conventionally located on the outside of the multiple contact. This is the case, for example, with the low-voltage circuit breaker according to DE 197 27 696.
  • the object of the present invention is therefore to provide a switching arrangement for low-voltage circuit breakers with a high rated current, in which the considerable forces on the contact carrier caused by the large number of existing contact levers and their pressing forces are reduced, and in particular a more uniform distribution of the attacking forces the bearing pin of the contact lever is reached.
  • Switch contacts, fixed switching contacts and a device for cooling, deionizing and extinguishing the switching arc comprises, solved that one over the entire Contact width continuous fixed contact with pre-contact function is provided and the movable contact levers with and without pre-contact are arranged in a different order from the conventional arrangement, distributed over the entire width of the contact in a defined order.
  • the contact levers can be arranged in such a way that one contact lever with pre-contact and one contact lever without pre-contact are alternately provided over the entire width of the contact carrier.
  • the contact levers can also be distributed in such a way that they are provided in sections or packages, in that two or more contact levers with pre-contact and two or more contact levers without pre-contact are alternately provided in succession.
  • the contact levers or the contact lever packages are advantageously arranged symmetrically in such a way that contact levers are arranged on the outer sides of the contact carrier without any preliminary contact.
  • contact levers or the contact lever packages can also be expedient to arrange the contact levers or the contact lever packages symmetrically such that contact levers with pre-contact are arranged on the outer sides of the contact carrier.
  • FIG. 1 shows a movable contact carrier with multiple contacts, which is equipped according to the present invention.
  • Fig. 2 shows schematically the arrangement of the contact lever on the movable contact carrier under the arc quenching device in a first possible embodiment.
  • Fig. 3 shows schematically the arrangement of the contact lever on the movable contact carrier under the arc quenching device in a possible variant.
  • Fig. 1 shows a movable contact carrier 1 with multiple contact for a low-voltage circuit breaker for high rated currents, which has a plurality of movable contact levers 2, 3, which are parallel to each other at a small relative distance are arranged.
  • some of the contact levers 2 have a pre-contact 5 which is arranged between the end of the contact lever 2 designed as an arcing horn 6 and the main contact 4.
  • These movable pre-contacts 5, like the movable main contacts 4, interact in a known manner with fixed pre-contacts and main contacts, not shown.
  • the contact levers 3 which are not provided with preliminary contacts 5 are arranged in a defined order which differs from the conventional arrangement which is restricted to the outer regions and in which they are provided in sections or in packets.
  • the order is not limited to the order shown in the present example, in which, starting from one side of the contact carrier 1, two contact levers 3 without pre-contact 5 are followed by seven contact levers 2 with pre-contact 5 and then four contact levers 3 without pre-contact, seven contact levers 2 with pre-contact 5 and two contact levers 3 without pre-contact 5.
  • the different contact levers 2, 3 are arranged symmetrically on the contact carrier 1 for reasons of uniform force distribution. As a result, the bending stress and eventual deflection of the highly stressed bearing pin 12 of the contact levers 2, 3 are reduced or shifted away from the central region of the bearing pin 12 and the attacking bending forces are distributed more evenly.
  • FIG. 2 schematically shows the arrangement of the contact levers 2, 3 of the movable contact carrier 1, not shown, under the arc extinguishing device 7 in a first possible embodiment, in which the contact levers 2, 3, with or without a pre-contact 5, in a similar order as 1, are arranged in packets.
  • the contact levers 2, 3, with or without a pre-contact 5, in a similar order as 1 are arranged in packets.
  • the effective pre-contacts 5 shown here over the width of the contact carrier 1 and the resulting local distribution of the resulting partial switching arcs.
  • the cost of parallel extinguishing devices in the form of spatially separate units is reduced by designing partial extinguishing devices in an extinguishing room and the overall width of the switch is minimized.
  • FIG. 3 schematically shows the arrangement of the contact levers 2, 3 of the movable contact carrier 1, not shown, under the arc extinguishing device 11 in a possible variant, in which a contact lever 3 without a pre-contact 5 and a contact lever 2 with a pre-contact 5 alternate in the sequence are arranged continuously over the entire width of the contact carrier 1.
  • the design of the arc extinguishing device 11 here suitably corresponds to the substantially uniform distribution of the switching arc to be expected over the entire switching contact width.
  • the formation of the fixed contact across the entire rail width has a positive influence on the continuous current heating.
  • the larger amount of copper causes a higher temperature gradient and thus better heat dissipation.
  • the commutation of the current is significantly improved, which leads to better quenching behavior of the arc quenching device.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

La présente invention concerne un montage destiné à un disjoncteur de puissance basse tension à intensité nominale élevée. Ledit montage comprend des contacts de commutation mobiles (2, 3) disposés principalement sur un support de contacts (1) mobile, des contacts de commutation fixes, et un dispositif permettant le refroidissement, la désionisation et l'extinction de l'arc électrique de commutation (7, 11). Alors que le contact fixe est équipé d'une fonction de contact préalable sur toute la largeur du contact, des leviers de contact mobiles (2, 3) sont répartis sur toute la largeur du support de contacts (1), avec ou sans contact préalable (5) selon un ordre défini. Peuvent se suivre de manière successivement alternée respectivement un levier de contact (2) avec contact préalable (5) et un levier de contact (3) sans contact préalable. Peuvent également se suivre de manière successivement alternée, par groupes, deux leviers de contact (2), ou plus, avec contact préalable (5), et deux leviers de contact (3), ou plus, sans contact préalable.
EP02724107A 2001-04-04 2002-03-12 Montage pour disjoncteur de puissance basse tension Expired - Fee Related EP1374263B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10117844A DE10117844A1 (de) 2001-04-04 2001-04-04 Schaltungsanordnung für Niederspannungs-Leistungsschalter
DE10117844 2001-04-04
PCT/DE2002/000935 WO2002082482A1 (fr) 2001-04-04 2002-03-12 Montage pour disjoncteur de puissance basse tension

Publications (2)

Publication Number Publication Date
EP1374263A1 true EP1374263A1 (fr) 2004-01-02
EP1374263B1 EP1374263B1 (fr) 2008-05-07

Family

ID=7681066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02724107A Expired - Fee Related EP1374263B1 (fr) 2001-04-04 2002-03-12 Montage pour disjoncteur de puissance basse tension

Country Status (7)

Country Link
US (1) US6969816B2 (fr)
EP (1) EP1374263B1 (fr)
JP (1) JP2004523874A (fr)
CN (1) CN1230845C (fr)
DE (3) DE10117844A1 (fr)
HK (1) HK1062355A1 (fr)
WO (1) WO2002082482A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020654A1 (de) * 2004-04-22 2005-11-10 Siemens Ag Schaltkontaktanordnung
DE102005047740A1 (de) * 2005-09-29 2007-04-05 Siemens Ag Energieverteilungsgerät, insbesondere Leistungsschalter
DE102007001471A1 (de) 2007-01-05 2008-07-10 Siemens Ag Elektrische Schalteinrichtung
CN100514525C (zh) * 2007-08-08 2009-07-15 常熟开关制造有限公司(原常熟开关厂） 断路器的动触头
KR101704989B1 (ko) * 2015-04-30 2017-02-10 현대중공업 주식회사 회로차단기의 가동접촉자
CN114496643A (zh) * 2020-10-25 2022-05-13 Abb瑞士股份有限公司 用于直接电流中断的断续器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036188A5 (fr) 1969-03-06 1970-12-24 Seita
FR2650434B1 (fr) 1989-07-26 1995-11-24 Merlin Gerin Disjoncteur basse tension a contacts multiples et a fortes intensites
IT1289483B1 (it) * 1996-12-20 1998-10-15 Sace Spa Interruttore elettrico con mezzi per la regolazione dei contatti
DE19727696B4 (de) * 1997-06-20 2007-09-13 Siemens Ag Bewegbarer Schaltkontakt für Niederspannungs-Leistungsschalter
US5874699A (en) * 1997-09-18 1999-02-23 Eaton Corporation Molded case circuit breaker and moving conductor assembly therefor
US5898146A (en) * 1997-09-18 1999-04-27 Eaton Corporation Molded case circuit breaker with modular crossbar
US5994988A (en) * 1997-09-23 1999-11-30 Siemens Energy & Automation, Inc. Movable contact structure for a circuit breaker, including crossbar and spring biased cam mechanism
US6005206A (en) * 1998-05-07 1999-12-21 Eaton Corporation Electrical switching apparatus with improved contact arm carrier arrangement
DE20100490U1 (de) * 2001-01-05 2001-03-29 Siemens Ag Bewegbarer Kontaktträger zur Aufnahme von Kontakthebeln für Niederspannungs-Leistungsschalter
US6376788B1 (en) * 2001-01-08 2002-04-23 Eaton Corporation Magnetically collapsible toggle linkage for electrical switching apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02082482A1 *

Also Published As

Publication number Publication date
WO2002082482A1 (fr) 2002-10-17
CN1505824A (zh) 2004-06-16
US6969816B2 (en) 2005-11-29
HK1062355A1 (en) 2004-10-29
DE10117844A1 (de) 2002-10-17
JP2004523874A (ja) 2004-08-05
CN1230845C (zh) 2005-12-07
US20040094513A1 (en) 2004-05-20
DE20118493U1 (de) 2002-02-21
EP1374263B1 (fr) 2008-05-07
DE50212227D1 (de) 2008-06-19

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