EP0059118A1 - Mehrpoliger elektrischer Schalter mit Strombegrenzungsvorrichtung - Google Patents

Mehrpoliger elektrischer Schalter mit Strombegrenzungsvorrichtung Download PDF

Info

Publication number
EP0059118A1
EP0059118A1 EP82400132A EP82400132A EP0059118A1 EP 0059118 A1 EP0059118 A1 EP 0059118A1 EP 82400132 A EP82400132 A EP 82400132A EP 82400132 A EP82400132 A EP 82400132A EP 0059118 A1 EP0059118 A1 EP 0059118A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
arm
contact
opening
limiter
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
EP82400132A
Other languages
English (en)
French (fr)
Other versions
EP0059118B1 (de
Inventor
Jean Bancalari
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0059118A1 publication Critical patent/EP0059118A1/de
Application granted granted Critical
Publication of EP0059118B1 publication Critical patent/EP0059118B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
    • 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

  • each pole comprises a proper flyweight of predetermined mass, mechanically connected to the movable contact by a dead-stroke mechanical connection, and capable of make a limited movement relative to the latter.
  • a first bias spring is associated with the mechanical connection, and a second contact pressure spring biases the movable contact in the closed position.
  • the rapid displacement towards the open position of the movable contact is effected by means of an auxiliary magnetic circuit with thin air gap surrounding at least one conductor traversed by the current.
  • the object of the invention is to remedy this drawback and to produce a large-gauge limiting circuit breaker equipped with a retarder member with simple and reliable inertia.
  • the limiting circuit breaker according to the invention is characterized in that the retarder member comprises a counterweight formed by a first contact arm, associated by a dead-link mechanical connection with a second juxtaposed contact arm cooperating in the open position with a stopper arranged to limit the travel of the second arm beyond the open position and to allow continued movement of the first juxtaposed arm until the dead travel of the mechanical link is caught up, the inertia of the first arm then compensating for the shock due to the coming into engagement of the second arm and of the stop, so as to prevent the immediate reclosing of the contact arms before the intervention of the trip unit.
  • the retarder member comprises a counterweight formed by a first contact arm, associated by a dead-link mechanical connection with a second juxtaposed contact arm cooperating in the open position with a stopper arranged to limit the travel of the second arm beyond the open position and to allow continued movement of the first juxtaposed arm until the dead travel of the mechanical link is caught up, the inertia of the first arm then compensating for the shock due
  • the inertia of at least one movable contact arm is advantageously used to form the counterweight of the retarder member.
  • said mechanical connection comprises a drive member integral with the second contact arm associated with the stop, and cooperating with play with the first juxtaposed counterweight arm capable of performing a limited movement during said dead travel.
  • a low-voltage multi-pole limiter circuit breaker for high ratings for example of the order of 1000 amperes, is composed of a standard circuit breaker block 10 with molded insulating housing 11, superimposed on a limiter block 12 lower than molded insulating housing 13 with the same basic dimensions.
  • the open intermediate bottom 14 constitutes a partition wall between the two blocks 11, 13 and has orifices 15 for the passage of connection conductors.
  • the circuit breaker block 10 comprises by pole fixed contacts 16 arranged in the vicinity of the bottom 14 and cooperating in the closed position with corresponding movable contacts 18 carried by a plurality of pivoting fingers 20 housed in a cage 21
  • a breaking chamber 19 is provided in each pole and comprises a stack of metal separators for extinguishing the arc drawn between the contacts 16, 18 during their separation.
  • An operating mechanism 22 with toggle switch 24 and spring 23 energy accumulator is arranged in the central zone of the housing 11 and controls the closing and opening of the contact fingers 20, either by manual actuation of an external lever 26, or by the interaction of a trigger block 28 causing the automatic release of the trigger hook 29 associated with the mechanism 22 and causing the circuit breaker to open in the event of a fault.
  • the trip unit 28 with adjustable trip threshold of the magnetothermal or electronic type is sensitive to overload or short-circuit currents and is arranged longitudinally opposite the breaking chamber 19 relative to the mechanism 22.
  • a bar of switching 30 common to all the poles extends in the transverse direction of the housing 11 and cooperates with the operating mechanism 22 for the simultaneous actuation of the different cages 21 juxtaposed during manual or automatic control.
  • a connecting braid 32 electrically connects the rear part of each contact finger 20 to a conductive pad 34 passing through the trip unit 28. It is unnecessary to describe in detail the structure and operation of such a circuit breaker unit 10 well known to specialists. .
  • the limiter block 12 attached to the intermediate bottom 14 comprises, by pole, three contact arms 36a, 36b, 36c juxtaposed, each finger 36 having an elongated shape extending in the longitudinal direction of the housing 13 and parallel to the contact fingers 20 of the circuit breaker block 10 superior.
  • One end of each arm 36a, 36b, 36c carries a movable contact 37 cooperating in the closed position with a fixed contact 38 arranged on a fixed conductor 40 pressed against the bottom 41 of the housing 13.
  • the opposite end of the arm 36a , 36b, 36c is articulated on a pivot axis 42 oriented in the transverse direction of the bar 30, and housed in the housing 13 between the conductor 40 and the lower part of the trigger block 28.
  • the conductor 40 extends beyond of the fixed contact 38 in the direction of an end horn 43 forming part of an arc extinguishing chamber 44 with deionization plates 46 formed under the breaking chamber 19 of the circuit breaker block 10.
  • the ex opposite end of the elongated conductor 40 passes through the hole 15 in the bottom 14 and is subject to the range 34 for crossing the trip unit 28.
  • each contact arm 36a, 36b, 36c extends parallel and at a short distance from the conductor 40 to form a large current loop subjected to electrodynamic repulsion forces when a short-circuit current appears.
  • the line of action of the spring 58 is substantially perpendicular to the transverse direction of the pivot axis 42, and the return force of the spring 58 is exerted on the end of the arm 36 opposite the movable contact 37.
  • a connecting braid 52 electrically connects each contact arm 36a, 36b, 36c movable to a first connection pad 50 by means of a perpendicular conductor 54, which passes through a light formed in the bottom 41.
  • the conductor 54 is traversed longitudinally by the lower conductor 40.
  • the second connection pad 48 is integral with a conductor 51 of C-shaped connection passing behind the deionization plates 46 of the arc extinguishing chamber 44 to cause the attraction of the arc drawn between the contacts 37, 38.
  • the connecting conductor 51 crosses an opening 15 in the intermediate bottom 14 and is connected to the fixed contact 16 of the corresponding pole of the circuit breaker block 10.
  • the two connection pads 48, 50 of each pole of the limiting circuit breaker are arranged under the base 41 of the limiter block base 12, so as to avoid current feeds through the lateral faces of the boxes 11.
  • Each pole of the limiter block 12 is equipped with an inertia retarder device that becomes active at the end of the opening stroke of the contact arms 36a, 36b, 36c to slow their fall back to the closed position by hindering the reclosing of the contacts 37, 38 before tripping of the circuit breaker block 10.
  • the central contact arm 36b for this purpose is provided with a stop pin 60 held in a circular hole 61 by two retaining washers 62, 64 bearing on the opposite faces of said arm 36b.
  • the stop axis 60 extends parallel to the pivot axis 42 in the transverse direction of the housing 13, and engages by its opposite ends in two circular openings 66, 68 formed respectively in the two other lateral arms 36a , 36c juxtaposed arranged on either side of the central contact arm 36 b.
  • Each opening 66, 68 has a diameter greater than that of the stop axis 60.
  • the length of the latter is also less than the width of a pole.
  • a protrusion 70 projecting from the intermediate bottom 14 serves as a shock absorber for the central contact arm 36b when it comes to the end of the opening stroke.
  • the limiter block 12 does not intervene and the contacts 37, 38 remain closed thanks to the preponderant action of the contact pressure springs 58 vis-à-vis the weak electrodynamic repulsion forces exerted between the contact arms 36 and the conductor 40.
  • the fault is detected by the trigger block 28 which controls the unlocking of the trigger hook 29 of the mechanism 22, followed by the opening of the contacts 16, 18 of the circuit breaker block 10, the arc extinguishing taking place in the breaking chamber 19.
  • the stopped pivoting of the central arm 36b at the end of the first opening phase does not, however, hinder the continued movement of the lateral arms 36a, 36c during a dead travel da broken up during the second opening phase.
  • the take-up of the dead travel d takes place by the engagement of the openings 66, 68 of the lateral fingers 36a, 36c (in broken lines, FIG. 1) and of the stop axis 60 of the central arm 36b.
  • the abutment of the central arm 36b against the protuberance 70 generates a shock tending to return said central arm 36b to the closed position.
  • the invention is not limited to the embodiment described, but it extends to any variant remaining within the framework of electrotechnical equivalences, in particular that in which a different number of contact arms 36a, 36b, 36c .. would be used in the limiter block 12, and that in which the mechanical linkage to play of the inertia retarder device would be arranged differently.
  • the latter has been described with reference to a modular limiter block 12 associated with an independent circuit breaker block 10 with automatic trip 28, but it is understood that the retarder device according to the invention also applies to any other limiter circuit breaker whose functions of limitation and disjunction are combined in the same device.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP82400132A 1981-02-11 1982-01-25 Mehrpoliger elektrischer Schalter mit Strombegrenzungsvorrichtung Expired EP0059118B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8102800A FR2499762A1 (fr) 1981-02-11 1981-02-11 Disjoncteur electrique multipolaire a dispositif de limitation de courant perfectionne
FR8102800 1981-02-11

Publications (2)

Publication Number Publication Date
EP0059118A1 true EP0059118A1 (de) 1982-09-01
EP0059118B1 EP0059118B1 (de) 1985-11-13

Family

ID=9255142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400132A Expired EP0059118B1 (de) 1981-02-11 1982-01-25 Mehrpoliger elektrischer Schalter mit Strombegrenzungsvorrichtung

Country Status (6)

Country Link
US (1) US4417223A (de)
EP (1) EP0059118B1 (de)
JP (1) JPS57151132A (de)
CA (1) CA1167495A (de)
DE (1) DE3267339D1 (de)
FR (1) FR2499762A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633464A1 (fr) * 1988-06-28 1989-12-29 Merlin Gerin Dispositif de protection contre des effets des impulsions electromagnetiques nucleaires
EP0490332A2 (de) * 1990-12-11 1992-06-17 Hitachi, Ltd. Schutzschalter

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626811A (en) * 1985-10-15 1986-12-02 Westinghouse Electric Corp. Circuit interrupter with integral resilient stop means for contact arm
JPH01265423A (ja) * 1988-04-18 1989-10-23 Fuji Electric Co Ltd 回路遮断器
KR930010967B1 (ko) * 1989-09-18 1993-11-18 미쯔비시 덴끼 가부시기가이샤 한류형 회로차단기
US5504292A (en) * 1994-01-13 1996-04-02 Square D Company Arc stack for a circuit breaker
US5680081A (en) * 1994-01-13 1997-10-21 Square D Company Circuit breaker having double break mechanism
US5424699A (en) * 1994-02-14 1995-06-13 Square D Company Blow-off terminal for a circuit breaker
US5504291A (en) * 1994-02-14 1996-04-02 Square D Company Contact blade assembly for a circuit breaker
US5539167A (en) * 1994-02-14 1996-07-23 Square D. Company Blade suspension assemlby for a circuit breaker
US5500496A (en) * 1994-02-14 1996-03-19 Square D Company Handle assembly for a circuit breaker
US5444423A (en) * 1994-02-14 1995-08-22 Square D Latch mechanism for a circuit breaker
US5608198A (en) * 1995-06-26 1997-03-04 Square D Company Circuit breaker arrangement for protection against electrical arcs
US5581063A (en) * 1995-06-26 1996-12-03 Square D Company Arc-resistant shield for protecting a movable contact carrier of a circuit breaker
JP4321296B2 (ja) * 2004-02-19 2009-08-26 富士電機機器制御株式会社 反発形回路遮断器の接触子装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT177827B (de) * 1953-02-02 1954-03-10 Elin Ag Elek Ind Wien Prellarme Kontaktanordnung
DE1665817A1 (de) * 1966-11-29 1971-03-18 Siemens Ag Elektrischer Schalter,insbesondere Selbstschalter
US3614687A (en) * 1968-08-28 1971-10-19 Tokyo Shibaura Electric Co Circuit interrupting apparatus
FR2351483A1 (fr) * 1976-05-12 1977-12-09 Merlin Gerin Disjoncteur rapide limitateur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115737A (en) * 1981-01-12 1982-07-19 Hitachi Ltd Current limiting breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT177827B (de) * 1953-02-02 1954-03-10 Elin Ag Elek Ind Wien Prellarme Kontaktanordnung
DE1665817A1 (de) * 1966-11-29 1971-03-18 Siemens Ag Elektrischer Schalter,insbesondere Selbstschalter
US3614687A (en) * 1968-08-28 1971-10-19 Tokyo Shibaura Electric Co Circuit interrupting apparatus
FR2351483A1 (fr) * 1976-05-12 1977-12-09 Merlin Gerin Disjoncteur rapide limitateur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633464A1 (fr) * 1988-06-28 1989-12-29 Merlin Gerin Dispositif de protection contre des effets des impulsions electromagnetiques nucleaires
EP0349445A1 (de) * 1988-06-28 1990-01-03 Merlin Gerin Vorrichtung zum Schutz gegen Einwirkungen eines elektromagnetischen Nuklearimpulses
EP0490332A2 (de) * 1990-12-11 1992-06-17 Hitachi, Ltd. Schutzschalter
EP0490332A3 (en) * 1990-12-11 1993-06-30 Hitachi, Ltd. Circuit breaker

Also Published As

Publication number Publication date
DE3267339D1 (en) 1985-12-19
JPS57151132A (en) 1982-09-18
CA1167495A (en) 1984-05-15
JPH026181B2 (de) 1990-02-07
US4417223A (en) 1983-11-22
EP0059118B1 (de) 1985-11-13
FR2499762A1 (fr) 1982-08-13
FR2499762B1 (de) 1984-04-06

Similar Documents

Publication Publication Date Title
EP0059118B1 (de) Mehrpoliger elektrischer Schalter mit Strombegrenzungsvorrichtung
US4489295A (en) Circuit interrupter with improved electro-mechanical undervoltage release mechanism
EP0104981B1 (de) Elektrischer Schalter mit einer ferngesteuerten ruhenden Schaltvorrichtung
EP0017575A1 (de) Schalter mit Schnellauslösung im Falle eines Fehlers
FR2580426A1 (fr) Disjoncteur pour basse tension avec fonction de commutation pour commande de systeme de gestion d'energie electrique
EP0140761A2 (de) Antriebsmechanismus für einen mehrpoligen Niederspannungs-Schutzschalter
EP0205369A1 (de) Niederspannungslastschalter mit Shunt-Effekt
EP0042778A1 (de) Einpol- und Nulleiter-Kleinschalter
JPH0127250Y2 (de)
EP0537090B1 (de) Elektrischer Schützschalter mit Einfügung von zusätzlichen Windungen im Magnetauslöser
EP0053973B1 (de) Kleinselbstschalter mit hohem Schaltvermögen
EP0013642A1 (de) Strombegrenzender Selbstschalter für Niederspannung
EP0004801B1 (de) Schalter mit einer elektromagnetischen Einrichtung zur schnellen Öffnung des beweglichen Kontaktes
EP2743958B1 (de) Elektrisches Stromschaltgerät, insbesondere Abzweigschalter
FR2703821A1 (fr) Disjoncteur électrique à répulsion électrodynamique des contacts et à chambres de coupure double.
EP0047696B1 (de) Kleinstselbstschalter mit Lichtbogenkontakten
EP0045672B1 (de) Kleinschalter mit Abschaltung des Nulleiters und des Phasenleiters
EP0054499B1 (de) Schalter mit Trennung des Nulleiters
FR2656155A1 (fr) Auxiliaire d'adaptation pour interrupteur differentiel multipolaire.
EP0649156B1 (de) Schutzeinrichtung dargestellt durch die Reihenschaltung eines Schutzschalters mit einem Schaltgerät
EP0232637A1 (de) Elektrischer Kleinschalter mit Mehrfachkontakt
FR2550376A1 (fr) Disjoncteur a mecanisme a declenchement automatique et rearmement manuel
FR2638017A1 (fr) Interrupteur electrique multipolaire a basse tension pour calibres eleves
FR2553930A1 (fr) Mecanisme reversible de commande d'un disjoncteur limiteur multipolaire
EP0552112B1 (de) Kombinierte Schutzschalter und Nulleiter-Trennvorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE GB IT NL SE

17P Request for examination filed

Effective date: 19830203

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE GB IT LI NL SE

REF Corresponds to:

Ref document number: 3267339

Country of ref document: DE

Date of ref document: 19851219

R20 Corrections of a patent specification

Effective date: 19860715

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890131

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19900130

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19910117

Year of fee payment: 10

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19910131

Ref country code: CH

Effective date: 19910131

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910207

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19920126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19920131

BERE Be: lapsed

Owner name: MERLIN GERIN

Effective date: 19920131

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950119

Year of fee payment: 14

EUG Se: european patent has lapsed

Ref document number: 82400132.5

Effective date: 19920806

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960508

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19961001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970125

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970125