EP0309386A1 - Disjoncteur multipolaire de puissance à basse tension avec un boîtier isolant et chambre d'extinction d'arc - Google Patents

Disjoncteur multipolaire de puissance à basse tension avec un boîtier isolant et chambre d'extinction d'arc Download PDF

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Publication number
EP0309386A1
EP0309386A1 EP88730207A EP88730207A EP0309386A1 EP 0309386 A1 EP0309386 A1 EP 0309386A1 EP 88730207 A EP88730207 A EP 88730207A EP 88730207 A EP88730207 A EP 88730207A EP 0309386 A1 EP0309386 A1 EP 0309386A1
Authority
EP
European Patent Office
Prior art keywords
quenching
circuit breaker
housing
chambers
walls
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
EP88730207A
Other languages
German (de)
English (en)
Other versions
EP0309386B1 (fr
Inventor
Martin Dipl.-Ing. Böttcher
Karl-Heinz Ing. Manthe (Grad)
Bernhard Dr.-Ing. Pfeiffer
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 EP0309386A1 publication Critical patent/EP0309386A1/fr
Application granted granted Critical
Publication of EP0309386B1 publication Critical patent/EP0309386B1/fr
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
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • 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
    • H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase switches
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings

Definitions

  • the invention relates to a multi-pole low-voltage circuit breaker with an insulating housing and an arc quenching chamber each having quenching plates for each pole.
  • a circuit breaker is known for example from US-A-4,540,961.
  • the quenching plates belonging to a quenching chamber form a block which is held together by insulating parts and which can be inserted into the quenching chamber.
  • An example of the arrangement of the insulating parts can be found in US-A-4 247 746. It is also known to use such insulating materials for the cohesion of the quenching plates, which are decomposed under the influence of the heat of a switching arc under gas formation and thereby promote the extinguishing of the arc.
  • the known design of the arc quenching chamber can in principle be used for circuit breakers which are dimensioned for quite different nominal currents.
  • the invention is based, for multi-pole circuit breakers with small, d. H. preferably to indicate a new design of the light extinguishing chambers which is below 100 A rated current, which leads to an improved use of space and thereby increases the switching capacity for a given volume of the circuit breaker.
  • this object is achieved in that all quenching chambers are arranged in a single quenching chamber housing which is divided by partitions and connected to the insulating material housing of the circuit breaker, and in that the quenching plates are fastened to the walls of the quenching chambers.
  • these walls can be provided with recesses for receiving the quenching plates. Since the extinguishing chamber housing can be manufactured as a single part, the insertion of the extinguishing plates presents no difficulties.
  • gas-emitting materials in the construction of arc quenching chambers.
  • the walls of the quenching chambers, starting from the passage openings for the movable contact levers, are designed to widen in a wedge-shaped manner and that the walls consist of a gas-emitting material under the influence of the temperature of the arc.
  • This design has a reflective effect on the arc discharge, which drives the discharge away from the passage openings in the direction of the opposite chamber outlet.
  • connection of the insulating material housing of the circuit breaker with the arcing chamber housing can be achieved in that the insulating material housing has a recess adapted to the arcing chamber housing.
  • a connection by suitable additional elements can also be considered.
  • the arcing chamber housing can also be dimensioned such that it corresponds to the width of the insulating material housing and locally forms its outer walls.
  • FIG. 1 shows a broken lower housing part 1 of a low-voltage circuit breaker in a compact design.
  • the lower housing part 1 is provided for a three-pole circuit breaker and accordingly has three arc quenching chambers 2, 3 and 4.
  • the arc extinguishing chambers 2, 3 and 4 on the front side of the lower housing part 1 terminal rooms 5, 6 and 7 are upstream, in which there are clamping devices for the conductors to be connected.
  • a busbar 10, 11 and 12 is shown as the basis of such a clamping device.
  • connection rooms 5, 6 and 7 of the arc quenching chambers 2, 3 and 4 there are further housing chambers 13, 14 and 15 which serve to accommodate the switching mechanism (not shown) and a switching shaft, as is generally known.
  • a movable contact lever 16 is partially shown, which extends through a passage opening 17 of the arc extinguishing chamber 2 and projects into it.
  • the contact lever 16 interacts with a stationary counter-contact 20, which is conductively connected to the clamping device located in the connection space 5.
  • openings 21 are provided on the bottom of the arcing chamber housing.
  • the arc quenching chamber contains two quenching plates 23.
  • the quenching plates are omitted in the adjacent arc quenching chambers 3 and 4.
  • the quenching plates 23 are provided with a wedge-shaped cutout 24 which is rounded at the closed end, thereby forming legs 25 which laterally enclose the end of the contact lever 16 and the mating contact 20 interacting therewith.
  • the arc quenching chambers 2, 3 and 4 are contained in their own quenching chamber housing 30, which in turn is inserted into a suitable recess 31 of the lower housing part 1.
  • This recess is formed by the outer walls 32 and post-like wall parts 33 and 34, which are arranged in the course of partitions 35 of the lower housing part 1.
  • Partitions 36 of the arcing chamber housing 30 are with strip-like projections 37 provided, which engage in corresponding grooves 40 of the wall parts 34 of the lower housing part 1.
  • a special feature of the arc quenching chambers 2, 3 and 4 shown in FIG. 1 is the wedge-shaped shape near the passage openings 17.
  • the wall surfaces 41 which are at an angle to the longitudinal direction of the contact levers 16 reflect pressure waves emanating from the switching arc in such a way that an accelerated spreading of the arc discharge in the direction of the Extinguishing plates 23 uses and thus the switching performance is increased by improved extinguishing effect.
  • the quenching chamber housing 30 can be made of a material which emits a gas under the influence of the heat of the switching arcs. However, it may be sufficient to provide or coat the arcing chamber housing 30 with such a gas-emitting material only in the region of the wall surfaces 41.
  • the extinguishing plates 23 are inserted in grooves 42 of the outer walls 43 and the partition walls 36 of the extinguishing chamber housing 30.
  • the quenching plates 23 are fixed in their longitudinal direction in that the ends of the legs 25 of the quenching plates abut against a shoulder surface 44 of the quenching chamber housing 30, which is formed between the inclined wall surfaces 41 and the outer walls 43 and the partition walls 36.
  • the extinguishing plates 23 are fixed on their opposite side by a perforated blowout plate 45, which is provided in grooves 46 of the outer walls 43 and the intermediate walls 36 of the extinguishing chamber housing 30.
  • a blowout shield 45 is shown in FIG. 2 in the area of the middle arcing chamber 3.
  • the quenching chamber housing 30 Before the quenching chamber housing 30 is installed in a circuit breaker, this is fitted with the quenching plates and the blowout plates 45 Mistake. Then this unit is inserted into the lower housing part 1, so that the quenching chambers for all poles of the switching device are installed in a single operation. The same procedure can also be used if the switching device has a smaller or larger number of poles, in which the arcing chamber housing is dimensioned accordingly for two or four arcing chambers. By placing an associated upper housing part, the arcing chamber housing is then enclosed on all sides and thus fastened on or in the insulating material housing.
  • the outer walls of a lower housing part 50 in the area of arcing chambers 51 can be formed directly by the outer walls 52 of an arcing chamber housing 53.
  • the outside wall thickness of the quenching chamber housing 53 such that in the example according to FIGS. 1 and 2 it corresponds to the common thickness of the outer walls 43 of the quenching chamber housing 30 and the outer walls of the lower housing part 1.
  • the connection spaces 54 are also contained in the arcing chamber housing 53.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP88730207A 1987-09-23 1988-09-07 Disjoncteur multipolaire de puissance à basse tension avec un boîtier isolant et chambre d'extinction d'arc Expired - Lifetime EP0309386B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873732472 DE3732472A1 (de) 1987-09-23 1987-09-23 Mehrpoliger niederspannungs-leistungsschalter mit einem isolierstoffgehaeuse und lichtbogenloeschkammern
DE3732472 1987-09-23

Publications (2)

Publication Number Publication Date
EP0309386A1 true EP0309386A1 (fr) 1989-03-29
EP0309386B1 EP0309386B1 (fr) 1993-01-27

Family

ID=6336946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88730207A Expired - Lifetime EP0309386B1 (fr) 1987-09-23 1988-09-07 Disjoncteur multipolaire de puissance à basse tension avec un boîtier isolant et chambre d'extinction d'arc

Country Status (3)

Country Link
US (1) US4845460A (fr)
EP (1) EP0309386B1 (fr)
DE (2) DE3732472A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1051633C (zh) * 1994-06-14 2000-04-19 富士电机株式会社 电路断路器
EP1202314A2 (fr) * 2000-10-31 2002-05-02 Terasaki Denki Sangyo Kabushiki Kaisha Disjoncteur à plusieurs pôles
EP2573787A1 (fr) * 2011-09-21 2013-03-27 Siemens Aktiengesellschaft Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée
EP2643843B1 (fr) * 2010-11-23 2020-07-15 Schneider Electric USA, Inc. Bloc déclencheur électronique complètement enveloppé destiné à un disjoncteur à boîtier moulé

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0821278B2 (ja) * 1987-12-12 1996-03-04 富士電機株式会社 多極回路しゃ断器
US4945327A (en) * 1989-09-05 1990-07-31 General Electric Company Molded case circuit breaker variable arc exhaust shield
DE4307811A1 (de) * 1993-03-12 1994-09-15 Abb Patent Gmbh Elektrisches Schaltgerät
US5321378A (en) * 1993-04-08 1994-06-14 General Electric Company Molded case circuit breaker current transformer adapter unit
DE19715116C2 (de) * 1997-04-11 1999-05-12 Aeg Niederspannungstech Gmbh Lichtbogenkammersystem
DE19735522C1 (de) * 1997-08-16 1999-01-28 Kloeckner Moeller Gmbh Halterung für Löschbleche einer Lichtbogenlöscheinrichtung
US6248970B1 (en) * 1999-11-05 2001-06-19 Siemens Energy & Automation, Inc. ARC chute for a molded case circuit breaker
FR2802701B1 (fr) * 1999-12-20 2002-01-18 Schneider Electric Ind Sa Dispositif de coupure d'un appareil interrupteur
NL1020224C2 (nl) * 2002-03-21 2003-09-23 Holec Holland Nv Boogbestendige kast voor schakelsysteem.
DE102006060691A1 (de) * 2006-12-18 2008-06-19 Siemens Ag Lichtbogen-Löscheinrichtung sowie elektrischer Schalter mit einer Lichtbogen-Löscheinrichtung
US20090212722A1 (en) * 2007-10-23 2009-08-27 International Truck Intellectual Property Company, Llc Adaptive rv chassis tail lamp and tow lamp configuration
DE102008050754A1 (de) * 2008-10-07 2010-04-08 Siemens Aktiengesellschaft Leistungsschalter, Schaltpol für Leistungsschalter sowie Schaltpolgehäuseteil
US8164018B2 (en) * 2009-03-23 2012-04-24 Siemens Industry, Inc. Circuit breaker arc chambers and methods for operating same
US10102991B2 (en) * 2013-08-29 2018-10-16 Panasonic Intellectual Property Management Co., Ltd. Contact apparatus
CN105244242B (zh) * 2015-11-02 2017-09-15 上海电科电器科技有限公司 断路器及其排气结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394329A (en) * 1966-11-25 1968-07-23 Gen Electric Current-limiting electric circuit breaker
DE1413915A1 (de) * 1961-02-22 1969-01-30 Licentia Gmbh Schaltgeraet mit einer aus gasabgebendem Material bestehenden Lichtbogenkammer
EP0062350A1 (fr) * 1981-04-06 1982-10-13 Mitsubishi Denki Kabushiki Kaisha Appareillage de suppression d'arc pour disjoncteur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE893826C (de) * 1943-07-06 1953-10-19 Siemens Ag Funkenschutzkappe fuer elektrische Schalter grosser Leistung
DE893829C (de) * 1951-08-25 1953-10-19 Siemens Ag Vorzugsweise aus Pressstoff hergestellter Isolierkoerper zur Kontakt-befestigung vonSchaltern, insbesondere von Nockenschaltern
US3448231A (en) * 1966-11-14 1969-06-03 Gen Electric Electric circuit breaker arc chute with arc discharge filter
US4247746A (en) * 1977-10-04 1981-01-27 Dorman Smith Switchgear Limited Electric circuit breaker
US4540961A (en) * 1983-12-19 1985-09-10 Westinghouse Electric Corp. Molded case circuit breaker with an apertured molded cross bar for supporting a movable electrical contact arm

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1413915A1 (de) * 1961-02-22 1969-01-30 Licentia Gmbh Schaltgeraet mit einer aus gasabgebendem Material bestehenden Lichtbogenkammer
US3394329A (en) * 1966-11-25 1968-07-23 Gen Electric Current-limiting electric circuit breaker
EP0062350A1 (fr) * 1981-04-06 1982-10-13 Mitsubishi Denki Kabushiki Kaisha Appareillage de suppression d'arc pour disjoncteur

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1051633C (zh) * 1994-06-14 2000-04-19 富士电机株式会社 电路断路器
EP1202314A2 (fr) * 2000-10-31 2002-05-02 Terasaki Denki Sangyo Kabushiki Kaisha Disjoncteur à plusieurs pôles
EP1202314A3 (fr) * 2000-10-31 2002-07-10 Terasaki Denki Sangyo Kabushiki Kaisha Disjoncteur à plusieurs pôles
US6509817B2 (en) 2000-10-31 2003-01-21 Terasaki Denki Sangyo Kabushiki Kaisha Multipolar circuit breaker
EP2643843B1 (fr) * 2010-11-23 2020-07-15 Schneider Electric USA, Inc. Bloc déclencheur électronique complètement enveloppé destiné à un disjoncteur à boîtier moulé
EP2573787A1 (fr) * 2011-09-21 2013-03-27 Siemens Aktiengesellschaft Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée

Also Published As

Publication number Publication date
DE3877879D1 (de) 1993-03-11
EP0309386B1 (fr) 1993-01-27
DE3732472A1 (de) 1989-04-06
US4845460A (en) 1989-07-04

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