WO1998005053A1 - Sectionneur de puissance limiteur de courant - Google Patents

Sectionneur de puissance limiteur de courant Download PDF

Info

Publication number
WO1998005053A1
WO1998005053A1 PCT/EP1997/003621 EP9703621W WO9805053A1 WO 1998005053 A1 WO1998005053 A1 WO 1998005053A1 EP 9703621 W EP9703621 W EP 9703621W WO 9805053 A1 WO9805053 A1 WO 9805053A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit breaker
rotatable
contact
breaker according
driver
Prior art date
Application number
PCT/EP1997/003621
Other languages
German (de)
English (en)
Inventor
Lutz Thilker
Wolfgang Erven
Albert Zacharias
Original Assignee
Klöckner-Moeller Gmbh
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 Klöckner-Moeller Gmbh filed Critical Klöckner-Moeller Gmbh
Priority to DE59709980T priority Critical patent/DE59709980D1/de
Priority to EP97932787A priority patent/EP0916151B1/fr
Publication of WO1998005053A1 publication Critical patent/WO1998005053A1/fr

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
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • 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
    • H01H77/104—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 with a stable blow-off position

Definitions

  • the invention relates to a current-limiting circuit breaker with at least one two-armed rotary contact, which connects two fixed contact pieces in their closed basic position, the fixed contact pieces being designed in such a way that, in the event of an overload, there is electrodynamic force between them and the current-carrying rotary contact piece result which pivot the rotatable contact piece against the pressure of at least one contact spring from its closed position into an open securing position.
  • Such a circuit breaker is known from EP-Al-560 696. It comprises a contact arrangement arranged in a switching chamber housing with two fixed switching pieces, which are each connected to corresponding connecting terminals via rail-shaped conductors.
  • a two-armed switching element rotatable about an axis is provided, which in its closed position, ie basic position, connects the two fixed switching elements to one another, the fixed switching elements being designed in such a way that in the event of an overload, for example in the event of a short circuit, between them and the current-carrying rotatable switching element, due to the magnetic fields which form, results in forces which pivot the rotatable switching element from its closed position, ie open electrodynamically, and bring it into an open end position.
  • a current-limiting circuit breaker is known from EP-Al-406 130, in which a cam-like latching element is arranged on the movable switching piece, which, when the switching piece is pivoted from its basic position into a securing position, is pivoted backwards by a spring-loaded pivoting blocking element the basic position is prevented.
  • the object of the invention is to provide a circuit breaker of the type mentioned at the outset, in which, in the secured position of the rotatable switching piece, it is held securely until it is released by actuating a corresponding actuating element.
  • An advantageous embodiment consists in that a control cam is arranged on the locking member, the side of which facing the latching element is designed as a locking surface which fixes the rotatable switching piece located in the securing position in this position.
  • a driver which coaxially surrounds the axis and is arranged in a rotationally fixed manner on an actuating element of the circuit breaker. which has at least one slot-shaped recess extending in the circumferential direction, along which the nose-shaped latching element can be pivoted.
  • the first end of the gap-shaped recess seen in the circumferential direction has a driver surface which is selected such that it is only reached by the nose-shaped latching element after the securing position of the rotatable switching element has been reached and, in the event of an electrodynamic opening of the rotatable switching element, brakes its rotary movement .
  • the housing parts are expediently designed in such a way that the stop surfaces of the nose-shaped latching elements lie in the housing parts.
  • the stop surfaces are preferably made of a damping material.
  • a guide pin is expediently provided on the side of the driver facing away from the latching element, on which the locking member is arranged to be longitudinally displaceable.
  • the other end of the gap-shaped recess preferably has a stop surface against which the rotatable contact piece rests in its basic position.
  • the rotatable contact piece can also be pivoted into its securing position by means of the stop surface when the circuit breaker is actuated (e.g. manually) by rotating the corresponding actuating element against the pressure of corresponding contact springs.
  • the rotatable contact piece is held in its securing position by blocking the nose-shaped latching elements by means of at least one axially displaceable locking member.
  • two lug-shaped latching elements are provided on the rotatable switching element, offset by 180 °.
  • two axially displaceable spring-loaded locking members are provided, which are arranged axially in front of and behind the rotatable switching element and whose locking surfaces together result in a surface that prevents the rotating switching element from pivoting back into its basic position.
  • Fig.l a perspective view of the contact arrangement of a circuit breaker according to the invention, in which a
  • FIG. 2 shows a perspective view of the rotatable contact piece of the contact arrangement shown in FIG. 1 with a driver part arranged on an axis and two locking members;
  • FIG. 3 shows a section through the rotatable switching element shown in FIG. 2 in its basic position along the line labeled III-III there, for the sake of Clarity, the rear locking member is not shown and the fixed switching elements not shown in Figure 2 are shown in dashed lines;
  • FIG. 5 shows a perspective view of a locking element shown enlarged.
  • Fig.l 1 denotes a circuit breaker, which comprises a switching chamber housing with the housing parts 2, 3 and a contact arrangement arranged in the housing.
  • two terminals 4, 5 are provided, which are connected to two fixed switching elements 8, 9 (FIG. 3) via loop-shaped rail-shaped conductors 6, 7.
  • the fixed contact pieces 8, 9 are bridged by means of a contact piece 11 which can be rotated about an axis 10 against the pressure of corresponding contact springs 100 (FIG. 3).
  • the two arms 12, 13 of the rotatable switching element 11 press against contact pads 14, 15 against corresponding contact pads 16, 17 of the fixed switching elements 8, 9.
  • FIG. 2 denotes a driver which can also be pivoted about the axis 10 and which can be connected via two guide pins 21, each with a claw coupling 22, 23. These claw couplings are connected, for example, via corresponding actuating elements of the circuit breaker of the circuit breaker 1, not shown, or to adjacent contact arrangements for further network phases.
  • the driver 20 has a gap-shaped recess 24 in its central region, which extends in the circumferential direction of the driver and along which the nose-shaped locking elements 18, 19 are pivotable.
  • the recess 24 has a driver surface 25 or 27 and a stop surface 26 or 28 (FIG.
  • the locking members 31, 32 are rotatably mounted in the switching chamber housing and for this purpose have cams 39, 40 which engage in corresponding rail-shaped recesses in the switching chamber housing (not shown).
  • the mode of operation of the locking elements 31, 32 is discussed below: If, for example, an overload occurs (for example a short circuit), the rotatable switching element 11 is rotated in the direction of the arrow 41 (FIG. 3) due to the magnetic forces until the nose-shaped latching elements 18, 19 strike the stop surfaces 26, 28 of the recess 24 and prevent the switching piece 11 from turning further. Even before the stop surfaces 26, 28 have been reached, the rotatable switching element 11 has reached its securing position, and the latching elements 18, 19 have released the control cams 33, 34, so that these are further pressed together by the pressure of the locking member springs 101 and with their, the latching elements 18, 19 facing blocking surfaces 42, 43 (FIG.
  • the control cams 33, 34 are released by the latching elements 18, 19 and in turn form a blocking surface which prevents the rotatable switching piece 11 from pivoting back.
  • the two locking members 31, 32 are supported on the driver 20 via wedge-shaped surfaces 44-47. If the driver 20 is rotated in the direction of the basic position of the rotatable switching piece 11, the corresponding wedge-shaped surfaces 46, 47 of the driver 20 print the locking members 31, 32 away from the switching piece and the nose-shaped latching elements 18, 19 become free. The contact springs 100 then print the rotatable switching piece 11 back into its basic position. If the switching piece 11 has been pivoted into the securing position by rotation of the driver 20, the corresponding contact springs 100 also press the driver 20 into the starting position. A corresponding lock spring of the circuit breaker of the circuit breaker, not shown, can therefore be dimensioned weaker than in known circuit breakers.
  • This minimum distance is to be selected such that when the driver 20 rotates, the control cams 33, 34 of the locking members 31, 32 are pressed so far in the direction of the locking member springs 101 due to the wedge-shaped surfaces 44 to 47 that the locking elements 18, 19 are no longer through Control cams 33, 34 are blocked.
  • the stop surfaces 26, 28 are made of a damping material, e.g. made of plastic, rubber or an energy-consuming metal foam.
  • a damping material e.g. made of plastic, rubber or an energy-consuming metal foam.
  • Another advantageous alternative is to design the housing parts 2, 3 in such a way that the stop faces lie in the housing parts.
  • the invention is of course not limited to the embodiment described above.
  • the invention can also be implemented with only one locking member, provided the locking surface on the control cam is chosen to be correspondingly wide.
  • the control cam can also be provided with a recess which is located in the respective front surface of the control cam, so that the latching element is pressed into this recess after a predeterminable pivoting path of the rotatable switching element.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

L'invention concerne un sectionneur de puissance limiteur de courant comportant un système de contact comprenant au moins deux éléments fixes de contact (8, 9) et au moins un élément de contact (11) à deux bras et tournant autour d'un axe (10), cet élément (11) reliant, dans sa position normale fermée, les deux éléments fixes de contact (8, 9). Ces derniers sont conçus de sorte que, en cas de surcharge, l'élément de contact rotatif (11) pivote en une position de sécurité ouverte, par suite de forces électrodynamiques. Pour que l'élément de contact rotatif (11) soit maintenu de manière fiable en position de sécurité jusqu'à sa libération par l'actionnement d'un élément de commande correspondant, au moins un élément de verrouillage (18, 19) en forme d'ergot est disposé sur l'élément de contact rotatif (11). Cet élément de verrouillage (18, 19) suit le mouvement de l'élément de contact (11) lorsque celui-ci pivote de la position normale à la position de sécurité, et au moins un élément de blocage (31, 32) à ressort monté solidaire en rotation dans la chambre de commutation et mobile en sens axial empêche l'élément de verrouillage (18, 19) de pivoter à nouveau pour repasser de la position de sécurité à la position normale.
PCT/EP1997/003621 1996-07-27 1997-07-09 Sectionneur de puissance limiteur de courant WO1998005053A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59709980T DE59709980D1 (de) 1996-07-27 1997-07-09 Strombegrenzender leistungsschalter
EP97932787A EP0916151B1 (fr) 1996-07-27 1997-07-09 Disjoncteur limiteur de courant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19630470.9 1996-07-27
DE19630470A DE19630470C1 (de) 1996-07-27 1996-07-27 Strombegrenzender Leistungsschalter

Publications (1)

Publication Number Publication Date
WO1998005053A1 true WO1998005053A1 (fr) 1998-02-05

Family

ID=7801110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/003621 WO1998005053A1 (fr) 1996-07-27 1997-07-09 Sectionneur de puissance limiteur de courant

Country Status (3)

Country Link
EP (1) EP0916151B1 (fr)
DE (2) DE19630470C1 (fr)
WO (1) WO1998005053A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9572534B2 (en) 2010-06-29 2017-02-21 Abbott Diabetes Care Inc. Devices, systems and methods for on-skin or on-body mounting of medical devices

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054383A1 (de) * 2000-10-27 2002-05-08 Siemens Ag Strombegrenzender Niederspannungs-Leistungsschalter
DE102007011451A1 (de) * 2007-03-06 2008-09-11 Siemens Ag Kontakthebelbewegungseinrichtung und elektrischer Schalter sowie Verfahren zur Herstellung der Kontakthebelewegungseinrichtung
DE102008039066A1 (de) * 2008-08-21 2010-02-25 Siemens Aktiengesellschaft Leistungsschalter mit verschwenkbarem Überbrückungselement
DE102008047247A1 (de) * 2008-09-10 2010-04-15 Siemens Aktiengesellschaft Kontaktsystem für ein Schaltgerät mit einem Schaltwellensegment drehbar gelagerten Kontaktglied und mit einer axial dazwischen angeordneten Rasteinrichtung
DE102008056493A1 (de) * 2008-11-06 2010-05-12 Siemens Aktiengesellschaft Betätigungseinrichtung für mindestens einen an einem Schaltgerät anbringbaren Hilfsschalter und/oder Hilfsauslöser
DE102010014428A1 (de) * 2010-04-01 2011-10-06 Siemens Aktiengesellschaft Schalter, insbesondere Leistungsschalter
CN113012964A (zh) * 2021-03-01 2021-06-22 国网山东省电力公司齐河县供电公司 电气设备的防漏电装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0174904A1 (fr) * 1984-08-23 1986-03-19 Siemens Aktiengesellschaft Dispositif de contact pour disjoncteur basse tension avec un levier de contact à deux bras
EP0314540A1 (fr) * 1987-10-26 1989-05-03 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire à contact rotatif double

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052519A (fr) * 1963-04-11 1900-01-01
FR2648952B1 (fr) * 1989-06-26 1991-09-13 Merlin Gerin Disjoncteur limiteur equipe d'un dispositif retardateur de retombee de contact a effet electromagnetique
FR2688625B1 (fr) * 1992-03-13 1997-05-09 Merlin Gerin Contact d'un disjoncteur a boitier moule

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0174904A1 (fr) * 1984-08-23 1986-03-19 Siemens Aktiengesellschaft Dispositif de contact pour disjoncteur basse tension avec un levier de contact à deux bras
EP0314540A1 (fr) * 1987-10-26 1989-05-03 Merlin Gerin Dispositif de coupure pour un disjoncteur multipolaire à contact rotatif double

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9572534B2 (en) 2010-06-29 2017-02-21 Abbott Diabetes Care Inc. Devices, systems and methods for on-skin or on-body mounting of medical devices

Also Published As

Publication number Publication date
DE59709980D1 (de) 2003-06-05
EP0916151A1 (fr) 1999-05-19
EP0916151B1 (fr) 2003-05-02
DE19630470C1 (de) 1997-08-28

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