WO1994017545A1 - Disjoncteur de protection de ligne - Google Patents

Disjoncteur de protection de ligne Download PDF

Info

Publication number
WO1994017545A1
WO1994017545A1 PCT/AT1993/000184 AT9300184W WO9417545A1 WO 1994017545 A1 WO1994017545 A1 WO 1994017545A1 AT 9300184 W AT9300184 W AT 9300184W WO 9417545 A1 WO9417545 A1 WO 9417545A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching
bracket
switch
tab
leg
Prior art date
Application number
PCT/AT1993/000184
Other languages
German (de)
English (en)
Inventor
Alfred Nyzner
Original Assignee
Felten & Guilleaume Austria 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 Felten & Guilleaume Austria Ag filed Critical Felten & Guilleaume Austria Ag
Priority to AU53704/94A priority Critical patent/AU672843B2/en
Priority to EP94900625A priority patent/EP0680661B1/fr
Priority to AT94900625T priority patent/ATE150208T1/de
Priority to DE59305821T priority patent/DE59305821D1/de
Publication of WO1994017545A1 publication Critical patent/WO1994017545A1/fr
Priority to NO952722A priority patent/NO307068B1/no
Priority to GR970401141T priority patent/GR3023492T3/el

Links

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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H1/2066—Fork-shaped bridge; Two transversally connected contact arms bridging two fixed contacts

Definitions

  • the invention relates to a circuit breaker with a switch equipped with a bimetallic and magnetic release and with a pivotable switching bridge which is coupled to a switching knob, the switching bridge with the help of the switching knob from the at least one fixed contact to the OFF position in a at the Fixed contact adjacent ON position is pivotable.
  • a circuit breaker (“overcurrent switch”) in which an elongated hole is provided in a switch-off lever which is concentrically curved with respect to its pivot axis.
  • a hook bolt In the slot there is a hook bolt, which is guided with its ends in straight slots in the housing of the switch.
  • the hooking bolt interacts with a switch lever which is pivotally mounted in the switch and which has a hook at one end. The other end of the hooking bolt is assigned to the magnetic release and the bimetallic release of the known circuit breaker.
  • the invention is based on the object of further developing a line circuit breaker of the type mentioned above in such a way that the switching operations are improved with regard to the movement of the components of the line circuit breaker without impairing its tripping properties.
  • this object is achieved in that the switch toggle is connected to the movable switching bridge by means of a bracket and a bracket, that the arm of the bracket connected to the bracket is guided in a slot guide, that the other arm of the bracket is connected to the Switch toggle is connected that the slot of the slot guide is provided in a pawl pivotally mounted in the switch lock, which can be locked at its end opposite the pivot point with a pawl support, that the pawl support pivotally mounted in the switch lock is assigned the bimetal and magnet release, that the slot angled - la - and consists of a part which runs essentially parallel to the direction of displacement of the tab and consists of a part which is inclined to the direction of movement of the tab, extends away from the switching knob, and that the leg of the bracket received in the slot in the ON position in the part of the slot extending away from the switching knob.
  • FIGS. 4 and 5 shows the switch lock from FIGS. 4 and 5 during the switch-on process
  • the circuit breaker is of single-pole design. However, it can also be designed with up to four poles for nominal currents from 63 to 125 A.
  • the circuit breaker has a housing, of which only one housing half-shell is shown in the drawings. - 2 -
  • a switch lock 1 on which the switching bridge 2 is pivotally mounted about a pivot axis 3 that can be pivoted in the switch lock 1, a magnetic release 4, on the support of which the bimetal release and adjacent fixed contacts 6 are also mounted, and an arc extinguishing device, consisting of a deion chamber with an arc quenching chamber 8 and blow-off openings 9, which lead outside into the housing.
  • terminals 10 and 11 are placed in the housing, the terminal 10 being electrically conductively connected to the component 4 carrying the magnet trigger.
  • the terminal 11 is electrically conductively connected to the lower (not visible in the drawing) fixed contact.
  • the two fixed contacts 6 are electrically connected in the ON position by the switching bridge 2.
  • Each fixed contact 6 is assigned its own deion chamber 7 and its own arc quenching chamber 8, the two arc quenching devices being arranged separately from one another and being magnetically insulated from one another by a dividing wall (not shown) made of egg plate.
  • the magnetic release 4 interacts via a lever 12 mounted on it in a manner to be described, with the switch lock 1 for triggering the line protection switch.
  • the free end of the bimetallic release also interacts with switch lock 1 to trigger the circuit breaker.
  • the magnetic trigger 4 is adjusted via an armature spring 13 accommodated in it (see FIG. 2).
  • an adjusting screw 14 is provided, which is accessible from the outside through an opening in the housing.
  • Switch bridge 2 in the ON position shown in Fig. 1 or i the OFF position shown in Fig. 3) always via the switching - - Locked 1, regardless of whether it is switched off via the bimetallic release 5 or the magnetic release 4 or with the help of the switching knob 15 provided in the switch lock 1.
  • the switch-on always takes place with the help of the switching knob 15 via the switching lock 1, in that the switching knob 15 is pivoted.
  • the switching lock 1 shown in FIGS. 4 and 5, including the movable switching bridge 2 pivotably mounted on it, is designed as an independent component which can be used in the housing when the line circuit breaker according to the invention is assembled.
  • the switching lock 1 consists of two lock plates 20 and 21 which are connected to one another via the pivot axes 3, 22, 23 and 24.
  • the switch toggle 15 is pivotally mounted on the pivot axis 22 of the switching lock 1.
  • the shift knob 15 consists of two parts, namely the actual shift knob 15 and two spring holders 25, which are pivoted on the axis 22 coaxially to the shift knob 15.
  • the switch toggle 15 is loaded by a button spring 26 into its pivot position corresponding to the OFF position shown in FIG. 3.
  • one leg of the spring 26 is supported on the one lock plate 21 and the other leg on the end 27 'of a spring 27 which passes through the spring holder 25.
  • the spring holder 25 (two spring holders 25 are provided in the exemplary embodiment shown, see FIG. 7) is braced by two spring springs 27, which are accommodated in the interior of the switching knob 15, with respect to the switching knob 15, so that the spring holder 25 with respect to the switching knob 15 are pivotable against the force of these springs 27. This is of importance for the jump switching to be described which can be implemented in the circuit breaker according to the invention.
  • the switching toggle 15 is over its two Spring holder 25, coupled via a bracket 30, a tab 31 and a switching bridge tab 32 to the movable switching bridge 2.
  • the essentially U-shaped bracket 30 is inserted with one of its legs in holes 33 of the two spring holders 25 and engages with its other leg in an opening 29 of the tab 31.
  • the tab 31 is coupled to the switching bridge tab 32 via a joint 34.
  • the switching bridge tab 32 has two mutually parallel parts 35 which are connected to one another via a web 36.
  • the switching bridge tab 32 like the movable switching bridge 2, can be pivoted about the axis 3 rotatably inserted in the switching lock.
  • Two contact springs 37 are inserted over the axis 3, the legs of which are supported on the one hand on the movable switching bridge 2 and on the other hand on the switching bridge tab 32.
  • One leg 35 of the switching bridge tab 32 also carries an extension 38, into which a tear spring 39 is suspended, the other end of which is suspended in an extension 40 which is formed in one piece with the lock plate 21.
  • the switching bridge tab 32 can pivot at the end of the switching-on process (movement of the movable switching bridge 2 from the OFF position into the ON position) with respect to the moving switching bridge 2, so that the latter is pressed under the action of the two contact springs 37 with their two contact ends 41 against both contacts 6 fixed to the housing.
  • the leg of the bracket 30 coupled with the tab 31 is guided in a backdrop (slot guide).
  • This backdrop is formed by slots 50 in the two legs of a pawl 51.
  • the pawl 51 is pivotally mounted in the switching lock 1 about the axis 24, the two legs of the pawl 51 being connected by a web 52. - -
  • a support tab 53 is provided, the ends of which are associated with holes in the leg of the bracket 30, which is coupled to the tab 31, through which the said leg of the bracket 30 engages.
  • the two parts of the support bracket 53 running parallel to one another have a recess into which the other leg of the bracket 30 engages.
  • the end of the pawl 51 facing away from the pivot axis 24 is assigned to a pawl support 60.
  • the pawl support 60 is pivotally mounted in the switch lock 1 about the axis 23 and is loaded by a tension spring 61 onto the pawl 51 or the tab 31.
  • the free end 51 ′ of the pawl 51 is latched to the pawl support 60 in that a shoulder 62 of the pawl 51 on a shoulder 63 of the pawl support 60 lies on.
  • two projections 64 and 65 are provided on the pawl support 60, which are assigned on the one hand to the lever 12 of the magnetic release 4 and on the other hand to the free end of the bimetal release 5.
  • the pawl support 60 is pivoted counterclockwise and releases the pawl 51.
  • a catch 70 is also pivotally mounted about the axis 24, which is under the action of a spring 71, which loads it clockwise (FIG. 4).
  • the switching knob 15 is moved further (clockwise), its spring holders 25 are pivoted with increasing tension in the spring springs 27.
  • An attachment 72 is provided on the switching toggle 15, which on the catch 70 in the region of a recess 73 provided in it - 6 - comes up when the leg of the bracket 30 coupled to the tab 31 is approximately in the area of the slot 50 of the slot guide in the pawl 51, where it extends from a part which runs essentially parallel to the direction of displacement of the tab 31 in the direction of the
  • the pivot axis 22 of the shift knob 15 passes away part (approximately the position shown in FIG. 6).
  • the switching operation takes place via the switching lock 1.
  • the switching toggle 15 actuates the switching bridge 2, which is driven via the tab 31 and the switching bridge tab 32, via the bracket 30 guided in the link (slot 50 in the pawl 51) and which Contacts 41 are pressed onto the contacts 6.
  • the latching mechanism of the switch lock 1 according to the invention consists of the latch support 60 with its shoulder 63 and the latch 51 engaging in this with its shoulder 62.
  • the triggering process can take place independently of the position or any blocking of the switching knob 15 (free triggering).
  • the pawl 51 In the ON position of the line circuit breaker according to the invention, the pawl 51 has engaged with its shoulder 62, which is provided on a web connecting the two parallel parts of the pawl 51 and protrudes therefrom, into the shoulder 63 of the pawl support 60.
  • the position of the switching toggle 15 is achieved and maintained by exceeding the dead center of the joint which is formed from the spring holders 25 (bores 33) and the bracket 30.
  • the movable switching bridge 2 is moved over the bridge tab 32 and the tab 31 and in the direction away from the switching toggle 5. - 7 - Send part of the slot 50 in the pawl 4 locked legs of the bracket 30 tensioned. In this position, the tear spring 39 is tensioned and pulls the switching bridge 2 away from the fixed contacts 6 at the moment of triggering.
  • both contact springs 37 are also tensioned in order to build up the contact pressure.
  • An uneven contact erosion can be compensated for in the circuit breaker according to the invention by a larger bearing hole (play of the same with respect to the axis 3) in the bearing bracket 2 'of the movable switching bridge 2 and the symmetrically arranged contact springs 37.
  • the pawl support 60 is pivoted either by the bimetal 5 or by the lever 12 against the force of the spring 61 and the pawl 51 is unlocked, so that the angled one Parts 50 'of the slots 50 of the legs of the bracket 30 are moved out of these parts 50' and the movable switching bridge 2, driven by the tear spring 39, is pivoted into the OFF position shown in FIG. 2.
  • the leg of the bracket 30 received in the slots 50 of the pawl 51 moves into the end of the slots 50 of the pawl 51 that is distant from the axis 24 about which the pawl 51 is pivotally mounted.
  • the movable switching bridge 2 is additionally pressed open in a driven manner by the plunger of the magnetic release 4, thus preventing the contacts 41 and 6 from welding.
  • the movable switching bridge 2 is nevertheless welded to the fixed contacts 6, the red field of the contacts - 8 - cycle position indicator 80 visible in the viewing window 81 in the housing of the circuit breaker.
  • the circuit breaker If the circuit breaker is in the OFF position (contacts open), the pawl 51 is raised above the bracket 30 by the switching knob 15, which is pressed into the OFF position by the spring 26 loading it, and is ready to hook into the shoulder 63 of the pawl support 60 when it is pivoted back under the action of the spring 61.
  • the tear-open spring 39 is also (somewhat) tensioned in this position in order to keep the movable switching bridge 2 in the OFF position.
  • the pawl support 60 is pressed by the force of the spring 61 against the shoulder 62 of the pawl 51 in order to be ready for the latching.
  • the green field of the contact position indicator 80 indicating the OFF position is visible from the outside.
  • the switch toggle 15 is pivoted clockwise (FIG. 1) when it is switched on until the leg of the bracket 30 coupled to the tab 31 bears against the catch 70.
  • the tab 31, the switching bridge tab 32 and thus the movable switching bridge 2 are prevented from moving further, even if the switching knob 15 is pivoted further (position FIG. 6).
  • the contact ends 41 of the movable switching bridge 2 are approximately 1 mm in front of the fixed contacts 6 and, regardless of the continued movement of the switching knob 15, do not move any further.
  • the invention can be represented as follows, for example:
  • a switch lock 1 with a switching knob 15 is assigned to a pivotable switching bridge 2.
  • the switching bridge 2 can be pivoted with the help of the switching knob 15 from the OFF position spaced apart from fixed contacts 6 into an ON position adjacent to the fixed contacts 6.
  • the switching knob 15 is connected to the movable switching bridge 2 via an articulated connection consisting of a bracket 30 and a tab 31.
  • the leg of the bracket 30 connected to the tab 31 is guided in a slot guide 50, 51, whereas the other leg of the bracket 30 is articulated to the switching knob 15.
  • the slot guide 50 is provided in a pawl 51 which is pivotally mounted in the switching lock 1 and which can be latched to a pawl rest 60 at its end 51 'opposite the pivot point 24.
  • the pawl support 60 which is assigned the bimetallic release 5 and the magnetic release 4, is pivotally mounted 23 in the switching lock 1.
  • the slot 50 of the slot guide extends over a part of its length essentially parallel to the direction of displacement of the tab 31.
  • the leg of the bracket 30 received in the slot guide 50, 51 is in the ON position in a part 50 'running away from the switching knob 15. of the slot 50 is added and the switch toggle 15 assumes a dead center position with the bracket 30.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

Dans un disjoncteur de protection de ligne comportant une section de coupe (6, 41) munie d'un dispositif de déclenchement bimétallique et d'un dispositif de déclenchement magnétique (4), un verrou de maintien (1) muni d'une manette de commutation (15) est associé à un pont de commutation (2) pivotant. Le pont de commutation (2) peut être basculé à l'aide de la manette de commutation (15) de la position 'arrêt', position dans laquelle il est à distance des contacts fixes (6) à la position 'marche', position dans laquelle il se trouve contre les contacts fixes (6). La manette de commutation (15) est reliée au pont de commutation (2) mobile par un raccord articulé composé d'un étrier (30) et d'une barre de liaison (31). La branche de l'étrier (30) qui est reliée à la barre de liaison (31) est guidée dans une pièce de guidage à rainure (50, 51), alors que l'autre branche de l'étrier (30) est reliée à la manette de commutation (15) de manière articulée. La rainure de guidage (50) se situe dans un loquet (51) monté pivotant dans le verrou de maintien (1). L'extrémité (51') du loquet opposée au point de pivotement (24) peut être enclenchée dans un support de loquet (60). Ce support de loquet (60) qui est associé au dispositif de déclenchement bimétallique (5) et au dispositif de déclenchement magnétique (4) est monté pivotant (23) dans le verrou de maintien (1). La rainure (50) de la pièce de guidage est sensiblement parallèle au sens de glissement de la barre de liaison (31), sur une partie de sa longueur. La branche de l'étrier (30) logée dans la rainure de la pièce de guidage (50, 51) est logée en position de 'marche', dans une partie (50') de la rainure (50) qui part de la manette de commutation (15) et cette dernière (15) prend conjointement avec l'étrier (30) une position plus élevée que le point mort.
PCT/AT1993/000184 1993-01-21 1993-12-06 Disjoncteur de protection de ligne WO1994017545A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU53704/94A AU672843B2 (en) 1993-01-21 1993-12-06 Line safety switch
EP94900625A EP0680661B1 (fr) 1993-01-21 1993-12-06 Disjoncteur de protection de ligne
AT94900625T ATE150208T1 (de) 1993-01-21 1993-12-06 Leitungsschutzschalter
DE59305821T DE59305821D1 (de) 1993-01-21 1993-12-06 Leitungsschutzschalter
NO952722A NO307068B1 (no) 1993-01-21 1995-07-07 Ledningsbeskyttelsesbryter
GR970401141T GR3023492T3 (en) 1993-01-21 1997-05-19 Line safety switch.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA90/93 1993-01-21
AT0009093A AT404769B (de) 1993-01-21 1993-01-21 Leitungsschutzschalter

Publications (1)

Publication Number Publication Date
WO1994017545A1 true WO1994017545A1 (fr) 1994-08-04

Family

ID=3481250

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1993/000184 WO1994017545A1 (fr) 1993-01-21 1993-12-06 Disjoncteur de protection de ligne

Country Status (12)

Country Link
EP (1) EP0680661B1 (fr)
AT (2) AT404769B (fr)
AU (1) AU672843B2 (fr)
DE (1) DE59305821D1 (fr)
DK (1) DK0680661T3 (fr)
ES (1) ES2100663T3 (fr)
GR (1) GR3023492T3 (fr)
HR (1) HRP940032B1 (fr)
NO (1) NO307068B1 (fr)
SI (1) SI9400025A (fr)
TR (1) TR28256A (fr)
WO (1) WO1994017545A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069583A2 (fr) * 1999-07-15 2001-01-17 ABBPATENT GmbH Mécanisme de commutation pour appareillage électrique de commutation, en particulier pour un disjoncteur
WO2006053648A1 (fr) * 2004-11-18 2006-05-26 Abb Patent Gmbh Dispositif de commutation electrique d'une installation
DE102011086834A1 (de) * 2011-11-22 2013-05-23 Siemens Aktiengesellschaft Schaltmechanismus für ein elektrisches Schaltgerät sowie elektrisches Schaltgerät

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014110757B4 (de) 2014-07-29 2016-12-29 Eaton Industries Austria Gmbh Schaltgerät
GB2585836A (en) 2019-07-16 2021-01-27 Eaton Intelligent Power Ltd A switching device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802080A (en) * 1955-03-11 1957-08-06 Zinsco Electrical Products Circuit breaker
DE2505452A1 (de) * 1974-02-15 1975-08-21 Schrack Elektrizitaets Ag E Elektrischer schalter
FR2552930A1 (fr) * 1983-10-03 1985-04-05 Licentia Gmbh Mecanisme de commutation pour interrupteur de securite de ligne
FR2628261A1 (fr) * 1988-03-02 1989-09-08 Legrand Sa Disjoncteur a mecanisme a franchissement de point mort

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2226745B2 (fr) * 1973-04-19 1978-03-03 Legrand Sa

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802080A (en) * 1955-03-11 1957-08-06 Zinsco Electrical Products Circuit breaker
DE2505452A1 (de) * 1974-02-15 1975-08-21 Schrack Elektrizitaets Ag E Elektrischer schalter
FR2552930A1 (fr) * 1983-10-03 1985-04-05 Licentia Gmbh Mecanisme de commutation pour interrupteur de securite de ligne
FR2628261A1 (fr) * 1988-03-02 1989-09-08 Legrand Sa Disjoncteur a mecanisme a franchissement de point mort

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069583A2 (fr) * 1999-07-15 2001-01-17 ABBPATENT GmbH Mécanisme de commutation pour appareillage électrique de commutation, en particulier pour un disjoncteur
EP1069583A3 (fr) * 1999-07-15 2003-03-12 ABBPATENT GmbH Mécanisme de commutation pour appareillage électrique de commutation, en particulier pour un disjoncteur
WO2006053648A1 (fr) * 2004-11-18 2006-05-26 Abb Patent Gmbh Dispositif de commutation electrique d'une installation
US7579933B2 (en) 2004-11-18 2009-08-25 Abb Patent Gmbh Electrical installation switching device
DE102011086834A1 (de) * 2011-11-22 2013-05-23 Siemens Aktiengesellschaft Schaltmechanismus für ein elektrisches Schaltgerät sowie elektrisches Schaltgerät
CN103137391A (zh) * 2011-11-22 2013-06-05 西门子公司 用于电气开关设备的开关机构以及电气开关设备
US8975990B2 (en) 2011-11-22 2015-03-10 Siemens Aktiengesellschaft Switching mechanism for an electrical switching device and an electrical switching device

Also Published As

Publication number Publication date
ES2100663T3 (es) 1997-06-16
HRP940032A2 (en) 1996-08-31
AU672843B2 (en) 1996-10-17
HRP940032B1 (en) 1999-02-28
AT404769B (de) 1999-02-25
EP0680661A1 (fr) 1995-11-08
TR28256A (tr) 1996-03-28
NO952722D0 (no) 1995-07-07
EP0680661B1 (fr) 1997-03-12
ATE150208T1 (de) 1997-03-15
DE59305821D1 (de) 1997-04-17
DK0680661T3 (da) 1997-04-01
AU5370494A (en) 1994-08-15
ATA9093A (de) 1998-06-15
NO307068B1 (no) 2000-01-31
SI9400025A (en) 1994-09-30
NO952722L (no) 1995-07-07
GR3023492T3 (en) 1997-08-29

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