EP1374263B1 - Schaltanordnung für niederspannungs-leistungsschalter - Google Patents

Schaltanordnung für niederspannungs-leistungsschalter Download PDF

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Publication number
EP1374263B1
EP1374263B1 EP02724107A EP02724107A EP1374263B1 EP 1374263 B1 EP1374263 B1 EP 1374263B1 EP 02724107 A EP02724107 A EP 02724107A EP 02724107 A EP02724107 A EP 02724107A EP 1374263 B1 EP1374263 B1 EP 1374263B1
Authority
EP
European Patent Office
Prior art keywords
contact
levers
lever
moveable
switching arrangement
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.)
Expired - Lifetime
Application number
EP02724107A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1374263A1 (de
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/de
Application granted granted Critical
Publication of EP1374263B1 publication Critical patent/EP1374263B1/de
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
    • 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 breaker with high rated current, which comprises substantially arranged on a movable contact carrier movable switch contacts, fixed switch contacts and means for cooling, deionizing and extinguishing the switching arc.
  • High-voltage low-voltage circuit-breakers have a physically very wide contact system due to their function. This is dependent on the continuous current of the switch and not on its switching capacity, which is generally the same for all switches, regardless of their rated current and to a maximum of 100 kA.
  • the rail cross-section and thus also the width of the busbars and the contact system are therefore dimensioned according to the continuous current.
  • the movable contacts are designed as multiple contact systems with a certain number of identical contact lever. These contact levers are conventional, except with their main contact, additionally provided with a pre-contact and an arcing horn.
  • Such an arrangement is for example in the EP 0 410 902 B1 shown.
  • a low voltage circuit breaker with a movable multiple contact for high current ratings which has a plurality of contact fingers of equal length, which are arranged in a small relative distance parallel to each other and a fixed main contact, which cooperates in the closed position with a movable main contact of each contact finger.
  • at least one movable arc contact is provided, which is arranged between the end of at least one contact finger and the movable main contact.
  • These movable arcing contacts cooperate with a fixed arcing contact that is configured to center the arc with respect to the center axis of the switching pole. That means he, as in particular in the Fig.
  • the object of the present invention is therefore to provide a circuit arrangement for low-voltage circuit breaker with high rated current, in which the conditional by the plurality of existing contact lever and their pressure considerable forces are reduced to the contact carrier and in particular a more uniform distribution of the attacking forces the bearing pin of the contact lever is reached.
  • a switching arrangement for low-voltage circuit breaker with high rated current which essentially comprises arranged on a movable contact carrier movable switch contacts, fixed switch contacts and means for cooling, deionizing and extinguishing the switching arc, achieved by one over the entire contact width continuous solid contact with Vor.funktion is provided and the movable contact lever with and without Vor animation, distributed in a different manner from the conventional arrangement, over the entire width of the contact in a defined order, wherein alternately at least one movable contact lever with Vor animation and at least a movable contact lever without precontact are arranged consecutively.
  • the contact lever without precontact which are conventionally arranged only on the outer sides of the movable switching contacts, are provided distributed over the entire width of the movable contact carrier, ie also in the central region.
  • the arrangement of the contact lever can be made so that over the entire width of the contact carrier alternately a contact lever with precontact and a contact lever without precontact are provided consecutively.
  • the distribution of the contact lever can also be such that they are provided in sections or in packages by successively alternately two or more contact lever with Vor animation and two or more contact lever are provided without precontact.
  • the contact levers or the contact lever packages are arranged symmetrically such that contact levers are arranged without precontacting on the outer sides of the contact carrier.
  • contact levers or the contact lever packages may also be expedient to arrange the contact levers or the contact lever packages symmetrically so that contact levers with precontact are respectively arranged on the outer sides of the contact carrier.
  • the Fig. 1 shows a populated according to the present invention movable contact carrier with multiple contact.
  • the Fig. 2 schematically shows the arrangement of the contact lever on the movable contact carrier under the arc quenching device in a first possible embodiment.
  • the Fig. 3 schematically shows the arrangement of the contact lever on the movable contact carrier under the arc quenching device in a possible variant.
  • the 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 lever 2, 3, which at a small relative distance parallel to each other are arranged.
  • These movable VorITAe 5 act, as well as the main movable contacts 4 in a known manner with not shown fixed front and main contacts together.
  • the contact levers 3, which are not provided with precontacts 5, are arranged in a defined order deviating from the conventional arrangement, which is limited to the outer regions, in which they are provided in sections or in packages.
  • the order is not limited to the order shown in this example, in which, starting from one side of the contact carrier 1, two contact lever 3 without precontact 5 seven contact lever 2 with precontact 5 and then four contact lever 3 without precontact, seven contact lever 2 with precontact 5 and two contact lever 3 without precontact 5.
  • the different contact lever 2, 3 are arranged symmetrically on the contact carrier 1 for the sake of a uniform distribution of forces. As a result, the bending stress and possible deflection of the highly stressed bearing pin 12 of the contact lever 2, 3 is reduced or displaced away from the central region of the bearing pin 12 and the attacking bending forces are distributed more evenly.
  • the Fig. 2 schematically shows the arrangement of the contact lever 2, 3 of the movable contact carrier 1, not shown under the arc quenching device 7 in a first possible embodiment, in which the contact lever 2, 3, with or without VorAND 5, in a similar order as in Fig. 1 , are arranged in packages.
  • the contact lever 2, 3, with or without VorAND 5, in a similar order as in Fig. 1 are arranged in packages.
  • the contact lever 2, 3, with or without VorAND 5, in a similar order as in Fig. 1 are arranged in packages.
  • the effective precontacts 5 across the width the contact carrier 1 and the consequent spatial distribution of the resulting Operaschaltlichtbögen it is possible to realize a subdivision of the total quenching device 7 in juxtaposed partial erasures 8, 9, 10 with several monddlingen 13, 14, 15, 16 for the switching arc.
  • the cost of parallel extinguishing equipment in the form of spatially separated units is reduced by the design of partial erasures in an extinguishing space and the width of the switch is
  • the Fig. 3 schematically shows the arrangement of the contact lever 2, 3 of the movable contact carrier 1, not shown below the arc quenching device 11 in a possible variant in which in the sequence alternately each contact lever 3 without precontact 5 and a contact lever 2 with precontact 5 continuously over the entire width of the contact carrier 1 are arranged.
  • the design of the arc quenching device 11 here corresponds expediently to the expected substantially uniform distribution of the switching arc over the entire switching contact width.
  • the Pol Weg Sign is reduced at the first contact contact, which is why the required power of the Einschalturss can be lowered. This results in a lower load on all mechanical components of the drive system, or an increase in the mechanical life. Due to the design of the fixed contact over the entire rail width, the continuous current heating is positively influenced. The larger amount of copper causes a higher temperature gradient and thus a better heat dissipation. The commutation of the current is significantly improved, which leads to a better extinguishing behavior of the arc quenching device.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Breakers (AREA)
EP02724107A 2001-04-04 2002-03-12 Schaltanordnung für niederspannungs-leistungsschalter Expired - Lifetime EP1374263B1 (de)

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 (de) 2001-04-04 2002-03-12 Schaltanordnung für niederspannungs-leistungsschalter

Publications (2)

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

Family

ID=7681066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02724107A Expired - Lifetime EP1374263B1 (de) 2001-04-04 2002-03-12 Schaltanordnung für niederspannungs-leistungsschalter

Country Status (7)

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

Families Citing this family (5)

* 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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5210385A (en) * 1989-07-26 1993-05-11 Merlin Gerin Low voltage circuit breaker with multiple contacts for high currents

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036188A5 (ja) 1969-03-06 1970-12-24 Seita
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
US5898146A (en) * 1997-09-18 1999-04-27 Eaton Corporation Molded case circuit breaker with modular crossbar
US5874699A (en) * 1997-09-18 1999-02-23 Eaton Corporation Molded case circuit breaker and moving conductor assembly therefor
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, 80333 München 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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5210385A (en) * 1989-07-26 1993-05-11 Merlin Gerin Low voltage circuit breaker with multiple contacts for high currents

Also Published As

Publication number Publication date
DE20118493U1 (de) 2002-02-21
CN1505824A (zh) 2004-06-16
DE10117844A1 (de) 2002-10-17
EP1374263A1 (de) 2004-01-02
US6969816B2 (en) 2005-11-29
DE50212227D1 (de) 2008-06-19
JP2004523874A (ja) 2004-08-05
US20040094513A1 (en) 2004-05-20
CN1230845C (zh) 2005-12-07
HK1062355A1 (en) 2004-10-29
WO2002082482A1 (de) 2002-10-17

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