EP0206883A1 - Lastschalter mit gegossenem Gehäuse - Google Patents

Lastschalter mit gegossenem Gehäuse Download PDF

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Publication number
EP0206883A1
EP0206883A1 EP86401191A EP86401191A EP0206883A1 EP 0206883 A1 EP0206883 A1 EP 0206883A1 EP 86401191 A EP86401191 A EP 86401191A EP 86401191 A EP86401191 A EP 86401191A EP 0206883 A1 EP0206883 A1 EP 0206883A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
hook
handle
axis
upper link
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
EP86401191A
Other languages
English (en)
French (fr)
Other versions
EP0206883B1 (de
Inventor
Jean-Philippe Neel
Roger Case
Gilbert Garnier
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
Priority to AT86401191T priority Critical patent/ATE56307T1/de
Publication of EP0206883A1 publication Critical patent/EP0206883A1/de
Application granted granted Critical
Publication of EP0206883B1 publication Critical patent/EP0206883B1/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
    • 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
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee

Definitions

  • a first object of the present invention is to allow the realization of a mechanism at increased speed for contact separation control without significant increase in the volume occupied by this mechanism.
  • Another object of the invention is to allow the realization of a circuit breaker mechanism ensuring a strong acceleration of the movable contact from the separation of the contacts.
  • the invention also aims to produce a circuit breaker with a high intensity molded case, the height of the case is relatively low and whose contact pressure withstands these high currents.
  • the circuit breaker according to the invention is characterized in that said hook carries a stop cooperating with the upper link, during the pivoting of the released hook towards the tripped position DD of the circuit breaker, to move said upper link by breaking the toggle joint and bringing the axis of the knee lever in a position beyond the neutral point of said pivoting handle, said neutral point being defined by the alignment of the axis of articulation of the handle, the axis of the knee lever and the anchoring point of the spring on the handle.
  • the pivoting of the hook following the release of the coupling acts in two different ways on the toggle joint, in this case on the upper link of the toggle joint, on the one hand by displacement of the articulation axis of the upper link on the hook in a direction of opening of the contacts and on the other hand by pivoting of this upper link, causing the breaking of the toggle joint to accelerate the opening movement of the movable contact.
  • This double action occurs from the start of the tripping movement, which promotes rapid separation of the contacts and effective limitation of the cut current.
  • the upper link remains stationary relative to the hook, which limits friction and the braking of the movement of the moving assembly.
  • connection between the hook and the upper link is advantageously carried out by a light formed in the hook and a pin carried by the upper link and engaging in the light of the hook.
  • the upper link extends in the closed position substantially perpendicular to the hook, so as to reduce the length of this upper link and therefore the overall height of the mechanism while maintaining an amplified movement. of the kneepad when triggered.
  • the large angle of pivoting of the handle in the closed position allows the creation of a particularly simple locking device for the handle in the event of soldering of the contacts.
  • the handle support is extended by a finger capable of abutting on the articulation axis of the movable contact in the event of welding of the latter before the handle has crossed the opening dead center defined by the articulation point of the handle and the axis position of the knee lifter.
  • a low voltage circuit breaker comprises a casing made of insulating material molded in two parts, in this case a bottom 10 and a cover 12.
  • the casing of the circuit breaker, of the three-pole type is subdivided by internal partitions into three compartments each receiving the constituent elements of a pole. Only the central pole, with which is associated an operating mechanism designated by the general reference 14, is shown in FIG. 1, the other poles being identical.
  • the bottom 10 carries inlet 16 and outlet 19 terminals arranged on the two opposite small sides of the molded housing. Terminal 16 is connected by a conductor 17 plated on the bottom 10 to a fixed contact 18, which cooperates in the closed position of the circuit breaker with movable contacts 20.
  • movable contacts 20 in the form of blades are mounted with limited pivoting on an axis 22 integral with a contact support 24, the end of which is subject to a rotary bar 26, connecting the supports 24 of the different poles.
  • the movable contacts 20 are electrically connected by braids 28 and conductors 30 to the output terminal 19.
  • Springs 32 interposed between the support 24 and the movable contacts 20 provide the contact pressure. It is easy to see that a rotation of the bar 26 causes the support 24 to pivot in the clockwise direction of rotation in FIG. 1, causing separation of the contacts 18, 20.
  • With the contacts 18, 20 is associated a breaking chamber 34 with deionization plates 36 extending parallel to the bottom 10 above the conductor 17.
  • the operating mechanism 14 comprises a handle 38 projecting from an opening 40, formed in the cover 12.
  • the handle 38 is rigidly secured to a handle support 42, pivotally mounted on a fixed axis. 44 carried by a frame constituted by two flasks 46, fixed to the housing by screws 48.
  • the flasks 46 frame the constituent elements of the mechanism 14.
  • On a second fixed axis 50 carried by the flanges 46 is articulated a hook 52, the opposite end 54 cooperates with an attachment 56.
  • the lower link is articulated by an axis 66 on the mobile contact support 24.
  • a tension spring 68 is anchored between the axis of the toggle joint 62 and a point 70 of the handle support 42.
  • the closing of the contacts is controlled by a reverse pivoting of the handle 38, bringing the toggle joint in the extended position corresponding to the closing of the contacts 18, 20. Tripping of the circuit breaker, that is to say an automatic opening on fault is generated by the unlocking of the hook 56, which releases the end 54 of the hook 52. The latter pivots about its axis 50 allowing movement of the point of the axis 58 of articulation of the upper link 60.
  • the circuit breaker in figure 1 is equipped with an electronic trip device comprising a sensor in the form of a current transformer 72 which delivers a trip signal, in the event of overcurrent or short circuit, to a relay 74 acting on the latching 56.
  • Such electronic trip devices are indeed known and they can also be replaced by conventional thermal and / or magnetic triggers.
  • the upper link 60 carries a pin or lug 76, engaged in a slot 78, formed in the hook 52.
  • the pin 76 is in support of the bottom 80 of the light 78, oriented on the side of the axis 50 of pivoting of the hook 52.
  • the upper link 60 is substantially perpendicular to the right connecting the axes 50, 58.
  • the released hook 52 pivots around the axis 50 anticlockwise by moving up the axis 58 for fixing the upper link 60 and pushing from the bottom 80 of the light 78 the pin 76 to the right in FIG. 3.
  • the handle 38 Upon crossing the axis 62 of the right 82, the handle 38 is biased to the right to come into the position identified in Figure 5 by the points DD.
  • FIG. 5 are also marked the other positions of the handle 38, in this case the closing dead center PMF, the opening dead center PMO, the sectioning point S, the opening point 0 and the point of reset A.
  • the pin 76 is still in support of the bottom 80 of the light 78, the upper link 60 having not moved relative to the hook 52, these two parts 60, 52, having moved as a single unit.
  • the straight line connecting the axes 50, 58 is substantially parallel to the movable contact support 24 20 and the articulation point 66 of the lower link 64 on the support 24 is substantially at the movable contact 20.
  • These provisions allow a shortening of the links 60, 64, allowing a reduction in the overall height of the mechanism 14.
  • the angle defined by the upper link 60 and the spring 68 is large, for example around 25 degrees, which provides a significant force, maintaining the toggle 60, 64, in the extended position and a high contact pressure. This large angle does not hinder the movement of the handle 38 towards the tripping position DD, thanks to the pivoting imposed by the light 78 in the manner described above.
  • FIG. 4 illustrates the manual opening operation of the circuit breaker by pivoting the handle 38 from the closed position F to the open position O.
  • the line of action of the spring 68 is moved towards the right in Figure 4, so as to exert on the knee brace 60, 64, a breaking force.
  • the hook 52 remains stationary, the pin 76 sliding in the slot 78.
  • Such an operation is conventional, the reclosing of the circuit breaker being effected by a pivoting of the handle 38 in the opposite direction.
  • the handle support 42 has an extension 84 beyond its pivot axis 44 capable of abutting the axis 22 of articulation of the movable contact 20 in the event of the contacts 18, 20 being welded. This coming into abutment prevents a pivoting of the handle 38 beyond the position S, representative of a soldering of the contacts 18, 20.
  • the handle 38 When the handle 38 is released, it returns to its closed position F signaling the closed position of the circuit breaker.
  • the axis 22 accompanies the support 24 in its opening movement avoiding a stop of the extension 84 and preventing movement of the handle 38 towards the open position.
  • Such devices for indicating contact soldering are well known per se, the kinematics of the mechanism according to the invention allowing production by extremely simple and reliable means.
  • the hook 52 carries in the vicinity of its end 54 a transverse rearming axis 86.
  • the handle support 42 has abutment surfaces 88 capable of pushing the transverse axis 86 towards the hooking position during the pivoting of the handle 38 towards the opening 0 and reset R positions on the right of FIG. 3.
  • the transverse axis 86 constitutes at the same time a stop defining the tripping position DD of the handle 38.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Insulating Of Coils (AREA)
  • Fuses (AREA)
  • Control Of Eletrric Generators (AREA)
  • Motor Or Generator Frames (AREA)
  • Push-Button Switches (AREA)
  • Brushes (AREA)
EP86401191A 1985-06-12 1986-06-03 Lastschalter mit gegossenem Gehäuse Expired - Lifetime EP0206883B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401191T ATE56307T1 (de) 1985-06-12 1986-06-03 Lastschalter mit gegossenem gehaeuse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8509003 1985-06-12
FR8509003A FR2583570B1 (fr) 1985-06-12 1985-06-12 Disjoncteur a boitier moule.

Publications (2)

Publication Number Publication Date
EP0206883A1 true EP0206883A1 (de) 1986-12-30
EP0206883B1 EP0206883B1 (de) 1990-09-05

Family

ID=9320222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401191A Expired - Lifetime EP0206883B1 (de) 1985-06-12 1986-06-03 Lastschalter mit gegossenem Gehäuse

Country Status (11)

Country Link
US (1) US4710738A (de)
EP (1) EP0206883B1 (de)
JP (1) JPH0828171B2 (de)
AT (1) ATE56307T1 (de)
AU (1) AU584842B2 (de)
CA (1) CA1268199A (de)
DE (1) DE3673888D1 (de)
ES (1) ES8704290A1 (de)
FR (1) FR2583570B1 (de)
PT (1) PT82757B (de)
ZA (1) ZA864286B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663152A1 (fr) * 1990-06-11 1991-12-13 Merlin Gerin Mecanisme d'un disjoncteur a ressorts a boudin groupes tendus et procede de montage des ressorts.
EP0555157A1 (de) * 1992-02-07 1993-08-11 Schneider Electric Sa Anschlussvorrichtung für einen Niederspannungsschalter mit Kunststoffgehäuse
EP0555158A1 (de) * 1992-02-07 1993-08-11 Schneider Electric Sa Betätigungsmechanismus für einen Selbstschalter mit Giessformgehäuse
FR2689310A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme à poignée pivotante d'un disjoncteur à boîtier moulé.
EP0978860A2 (de) * 1998-08-07 2000-02-09 Moeller GmbH Schutzschalter
EP1003192A2 (de) * 1998-11-20 2000-05-24 General Electric Company Antriebvorrichtung für Leistungschutzschalter mit Drehkontaktanordnung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583571B1 (fr) * 1985-06-12 1994-02-18 Merlin Et Gerin Disjoncteur basse tension a coupure amelioree.
FR2659177B1 (fr) * 1990-03-01 1992-09-04 Merlin Gerin Capteur de courant pour un declencheur electronique d'un disjoncteur electrique.
US6346868B1 (en) * 2000-03-01 2002-02-12 General Electric Company Circuit interrupter operating mechanism
JP4717912B2 (ja) * 2008-09-16 2011-07-06 株式会社日立産機システム 回路遮断器
EP4163104A1 (de) 2021-10-05 2023-04-12 Flexopack S.A. Monoaxial orientierte, vernetzte mehrschichtfolie und verfahren
AU2022271461A1 (en) 2021-11-30 2023-06-15 Flexopack S.A. Vacuum skin packaging film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759063A (en) * 1950-07-25 1956-08-14 Murray Mfg Corp Circuit breaker
US3016435A (en) * 1959-03-18 1962-01-09 Heinemann Electric Co Circuit breaker and latch structure
US3171921A (en) * 1960-10-03 1965-03-02 Square D Co Circuit breaker operating mechanism
US3774129A (en) * 1971-12-01 1973-11-20 Tokyo Shibaura Electric Co No-fuse circuit breaker
DE2505452A1 (de) * 1974-02-15 1975-08-21 Schrack Elektrizitaets Ag E Elektrischer schalter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525959A (en) * 1968-12-05 1970-08-25 Westinghouse Electric Corp Circuit breaker with improved latch reset
US4594491A (en) * 1984-09-28 1986-06-10 Westinghouse Electric Corp. Molded case circuit breaker with a trip mechanism having an intermediate latch lever
US4660009A (en) * 1985-07-29 1987-04-21 Westinghouse Electric Corp. Modular integral circuit interrupter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759063A (en) * 1950-07-25 1956-08-14 Murray Mfg Corp Circuit breaker
US3016435A (en) * 1959-03-18 1962-01-09 Heinemann Electric Co Circuit breaker and latch structure
US3171921A (en) * 1960-10-03 1965-03-02 Square D Co Circuit breaker operating mechanism
US3774129A (en) * 1971-12-01 1973-11-20 Tokyo Shibaura Electric Co No-fuse circuit breaker
DE2505452A1 (de) * 1974-02-15 1975-08-21 Schrack Elektrizitaets Ag E Elektrischer schalter

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663152A1 (fr) * 1990-06-11 1991-12-13 Merlin Gerin Mecanisme d'un disjoncteur a ressorts a boudin groupes tendus et procede de montage des ressorts.
EP0555157A1 (de) * 1992-02-07 1993-08-11 Schneider Electric Sa Anschlussvorrichtung für einen Niederspannungsschalter mit Kunststoffgehäuse
EP0555158A1 (de) * 1992-02-07 1993-08-11 Schneider Electric Sa Betätigungsmechanismus für einen Selbstschalter mit Giessformgehäuse
FR2687249A1 (fr) * 1992-02-07 1993-08-13 Merlin Gerin Mecanisme de commande d'un disjoncteur a boitier moule.
FR2687248A1 (fr) * 1992-02-07 1993-08-13 Merlin Gerin Dispositif de raccordement d'un disjoncteur basse tension a boitier moule.
US5300907A (en) * 1992-02-07 1994-04-05 Merlin Gerin Operating mechanism of a molded case circuit breaker
FR2689310A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme à poignée pivotante d'un disjoncteur à boîtier moulé.
EP0978860A2 (de) * 1998-08-07 2000-02-09 Moeller GmbH Schutzschalter
EP0978860A3 (de) * 1998-08-07 2000-11-08 Moeller GmbH Schutzschalter
EP1003192A2 (de) * 1998-11-20 2000-05-24 General Electric Company Antriebvorrichtung für Leistungschutzschalter mit Drehkontaktanordnung
EP1003192A3 (de) * 1998-11-20 2002-10-02 General Electric Company Antriebvorrichtung für Leistungschutzschalter mit Drehkontaktanordnung

Also Published As

Publication number Publication date
CA1268199A (en) 1990-04-24
DE3673888D1 (de) 1990-10-11
JPH0828171B2 (ja) 1996-03-21
AU5852986A (en) 1986-12-18
ZA864286B (en) 1987-01-28
ATE56307T1 (de) 1990-09-15
JPS6271141A (ja) 1987-04-01
PT82757A (fr) 1986-07-01
AU584842B2 (en) 1989-06-01
FR2583570B1 (fr) 1988-07-15
PT82757B (pt) 1990-06-29
FR2583570A1 (fr) 1986-12-19
ES555843A0 (es) 1987-04-01
EP0206883B1 (de) 1990-09-05
ES8704290A1 (es) 1987-04-01
US4710738A (en) 1987-12-01

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