EP0780861B1 - Dispositif électrique à communtation d'arc - Google Patents

Dispositif électrique à communtation d'arc Download PDF

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Publication number
EP0780861B1
EP0780861B1 EP96402803A EP96402803A EP0780861B1 EP 0780861 B1 EP0780861 B1 EP 0780861B1 EP 96402803 A EP96402803 A EP 96402803A EP 96402803 A EP96402803 A EP 96402803A EP 0780861 B1 EP0780861 B1 EP 0780861B1
Authority
EP
European Patent Office
Prior art keywords
load side
arc
current path
contacts
supply side
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.)
Revoked
Application number
EP96402803A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0780861A1 (fr
Inventor
Jean Abot
Nicolas Hertzog
Michel Ledroit
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9485936&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0780861(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0780861A1 publication Critical patent/EP0780861A1/fr
Application granted granted Critical
Publication of EP0780861B1 publication Critical patent/EP0780861B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • H01H9/46—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/121—Protection of release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device

Definitions

  • the present invention relates to an electrical device with separable contacts like contactor, circuit breaker, limiter or contactor circuit breaker, capable of being connected to a load via a conduction path main comprising a control or protection member, this device further comprising a conduction path for bypassing the control or protection, this path being capable of being set work by switching a cutting arc.
  • Such an apparatus comprises a main current path with a thermomagnetic trip device, separable contacts with single break, and an electronic switch arranged in series with the contacts and shuntable by a bypass path.
  • the trigger causes the contacts to open; this opening is accompanied by an arc which is pulled between the contacts and is immediately transferred to the path bypass, so that the electronic switch remains protected for the contact opening phase.
  • the object of the present invention is to increase the impedance of the main conduction path when opening the contacts in a electrical device with double cut-off and bypass path activated by arc switching.
  • the device comprises a single upstream electrode of arc transfer arranged in the immediate vicinity of the upstream contacts for collect one foot of the upstream arc as soon as the contacts open, this electrode being connected to a bypass path which bypasses the downstream contacts and the bridge mobile, which is electrically conductive and which is susceptible to be connected to a connection point located downstream of the organ to be protected.
  • the electric arc switching device illustrated in Figure 1 is part of a protective device of the electrodynamic limiter type where is integrated into a device of the contactor, circuit breaker, contactor-circuit breaker type or starter, it comprises in a box 10 two contacts upstream and downstream mobile 11A, 11B arranged on a mobile contact bridge 12 and likely to cooperate each with an upstream fixed contact 13A and respectively a downstream fixed contact 13B.
  • Contacts can be controlled by a control device 14 for example constituted by a contactor electromagnet, by a circuit breaker lock or by a device manual control and acting on deck 12 via a part drive not shown, or by opening means to electrodynamic effect.
  • the apparatus comprises a main current path 15 which is established when the contacts are closed.
  • This main road has the bridge mobile 12 and two parts 15A, 15B located respectively upstream and downstream of the bridge and comprising conductive parts 16A, 16B which on the one hand carry the fixed contacts 13A, 13B and which on the other hand lead to respective terminals 17A, 17B constituted in the present example by external connection terminals.
  • upstream and Downstream means the side of the appliance which is connected to an energy source 18 and respectively the side of the device connected to a load 19 via a member control or protection 33 which one wishes to protect against the effects short-circuit or cut-off overcurrents.
  • the device has a transfer electrode arcing 20 associated with the upstream contacts 11A, 13A and located a short distance from the fixed contact 13A to collect, when the contacts open, the arc foot associated with the fixed contact (see figure 2).
  • the electrode 20 is separated from the j-shaped end 20A of the fixed conduction piece 16A of the path main current 15 by a small and fixed spacing e, sufficiently large to ensure the insulation distance in normal operation required, but small enough to be crossed by the foot of the upstream arch generated during a fault cut.
  • the electrode 20 is suitably isolated from the part 16a and connected by an electrically conductive path 21, bypassing downstream contacts 11B, 13B, at a connection point 22 located on the current line downstream of the member 33 to be protected, to establish of a cut and with the only upstream arc a bypass path of the charge.
  • the connection of the electrode 20 with the connection point 22 is carried out by external wiring by means of a connection terminal 21B external of the device ( Figures 1 and 2), or by internal connection to the device ( Figure 3).
  • the respective impedances ZA, ZB between the upstream contacts 11A, 13A and downstream contacts 11B, 13B are negligible when the contacts are closed.
  • the upstream and downstream arc voltage drops cause a increase in impedances ZA, ZB; from a current threshold, the arc upstream appeared between contacts 13A and 11A is switched to electrode 20 by skipping the fixed interval e (see figure 2) to appear between the contact fixed 13A - or the corresponding area of the fixed contact piece - and the electrode 20, while the impedance ZB increases until reaching a infinite value.
  • the upstream arc transferred between the workpiece fixed contact and electrode 20 reduces the electrothermal stress on the contact upstream mobile 11A and mobile bridge.
  • An impedance 23 of fixed ZC value or variable - for example a simple resistance or a coefficient resistance positive temperature - can be placed on the bypass path, as shown in dashes in Figure 1.
  • the device is integrated into a device housing 10 comprising upstream another mobile double bridge cut 30 requested by a circuit breaker lock 31 which is part of the control device 14 or which is autonomous if the circuit breaker box is separated from the housing 10 (as indicated by the separation in broken lines).
  • the lock 31 cooperates with an electromagnet 32 which belongs an device 14 and which controls the movable bridge 12 to open the contacts 11, 13 by voluntary order or when an overcurrent is noted by the release of lock 31.
  • the protected load can then be consisting of an internal electronic device 33 switch or soft start.
  • the downstream connection point 34 of the bypass path 21 with the main path 15 is then located in the housing 10.
  • detector means not indicated act on the means of command 14 which cause the opening of the movable bridge 12 and the birth an upstream arc between the contacts 11A, 13A and a downstream arc between the contacts 11B, 13B.
  • Arc voltage drops introduce respectively into the main current path an upstream impedance ZA and a downstream impedance ZB; the foot of the upstream arc associated with the fixed contact 13A is driven towards the electrode 20 by blowing means which are not indicated, so that impedance ZA is inserted in bypass path 21, while the impedance ZB remains included in the main path 15 and becomes infinite.

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP96402803A 1995-12-21 1996-12-18 Dispositif électrique à communtation d'arc Revoked EP0780861B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9515464 1995-12-21
FR9515464A FR2742916B1 (fr) 1995-12-21 1995-12-21 Dispositif electrique a commutation d'arc

Publications (2)

Publication Number Publication Date
EP0780861A1 EP0780861A1 (fr) 1997-06-25
EP0780861B1 true EP0780861B1 (fr) 2001-10-31

Family

ID=9485936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96402803A Revoked EP0780861B1 (fr) 1995-12-21 1996-12-18 Dispositif électrique à communtation d'arc

Country Status (10)

Country Link
US (1) US5777286A (zh)
EP (1) EP0780861B1 (zh)
CN (1) CN1068699C (zh)
AU (1) AU723390B2 (zh)
BR (1) BR9606127A (zh)
CA (1) CA2193715A1 (zh)
DE (1) DE69616488D1 (zh)
FR (1) FR2742916B1 (zh)
TW (1) TW308702B (zh)
ZA (1) ZA9610707B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD381735S (en) 1996-04-29 1997-07-29 Anthony Richard Dirito Fish bite detector
US5859578A (en) * 1997-03-04 1999-01-12 General Electric Company Current limiting shunt for current limiting circuit breakers
DE10118746B4 (de) * 2001-04-17 2004-06-24 Siemens Ag Verfahren zum Betreiben eines Schaltgerätes mit einem zuschaltbaren Strombegrenzer und zugehörige Anordnung
US6659783B2 (en) * 2001-08-01 2003-12-09 Tyco Electronics Corp Electrical connector including variable resistance to reduce arcing
US6958671B2 (en) * 2001-11-15 2005-10-25 Square D Company Electrical contactor with positive temperature coefficient resistivity element
ATE407441T1 (de) 2004-07-08 2008-09-15 Abb Schweiz Ag Lichtbogenlöscheinrichtung für schutzschalter
JP5986419B2 (ja) * 2012-04-13 2016-09-06 富士電機株式会社 接点装置及びこれを使用した電磁開閉器
EP3217413B1 (en) 2014-11-07 2019-01-09 Gorlan Team, S.L.U. Electric switch with high thermal performance, and method for cutting off an electrical current

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533363B1 (fr) * 1982-09-17 1985-11-08 Merlin Gerin Disjoncteur electrique a courant alternatif equipe d'un declencheur magnetothermique et d'un organe de commutation statique a telecommande
FR2582857B1 (fr) * 1985-05-29 1989-04-28 Merlin Gerin Disjoncteur unipolaire et neutre a effet shunt
FR2584529B1 (fr) * 1985-07-04 1995-01-06 Merlin Gerin Disjoncteur-contacteur electrique, notamment pour des batteries de condensateurs
IT207988Z2 (it) * 1986-08-04 1988-03-14 Bassani Spa Interruttore bipolare di apparecchiature elettriche di serie civili, con dispositivo di commutazione dell'arco elettrico.
DE3824027A1 (de) * 1988-07-15 1990-01-18 Asea Brown Boveri Elektrisches schaltgeraet
US5410442A (en) * 1992-02-17 1995-04-25 Siemens Aktiengesellschaft Electromechanical protection devcie
FR2695754B1 (fr) * 1992-09-16 1994-11-18 Telemecanique Pièce d'association d'un contacteur avec un disjoncteur.
FR2696273B1 (fr) * 1992-09-25 1994-11-18 Telemecanique Disjoncteur électrique à soufflage magnétique.

Also Published As

Publication number Publication date
FR2742916B1 (fr) 1998-01-16
TW308702B (en) 1997-06-21
AU723390B2 (en) 2000-08-24
CN1157466A (zh) 1997-08-20
AU7642496A (en) 1997-06-26
EP0780861A1 (fr) 1997-06-25
ZA9610707B (en) 1997-06-27
DE69616488D1 (de) 2001-12-06
CN1068699C (zh) 2001-07-18
BR9606127A (pt) 1998-11-03
CA2193715A1 (fr) 1997-06-22
FR2742916A1 (fr) 1997-06-27
US5777286A (en) 1998-07-07

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