EP2419914A1 - Accouplement d'une unité de déclenchement et d'un disjoncteur de protection de circuit - Google Patents

Accouplement d'une unité de déclenchement et d'un disjoncteur de protection de circuit

Info

Publication number
EP2419914A1
EP2419914A1 EP10713582A EP10713582A EP2419914A1 EP 2419914 A1 EP2419914 A1 EP 2419914A1 EP 10713582 A EP10713582 A EP 10713582A EP 10713582 A EP10713582 A EP 10713582A EP 2419914 A1 EP2419914 A1 EP 2419914A1
Authority
EP
European Patent Office
Prior art keywords
shaft
circuit breaker
lever
hollow shaft
coupling
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.)
Withdrawn
Application number
EP10713582A
Other languages
German (de)
English (en)
Inventor
Ralf Wieland
Klaus-Peter Eppe
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.)
ABB AG Germany
Original Assignee
ABB AG Germany
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 ABB AG Germany filed Critical ABB AG Germany
Publication of EP2419914A1 publication Critical patent/EP2419914A1/fr
Withdrawn legal-status Critical Current

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
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1018—Interconnected mechanisms with only external interconnections

Definitions

  • the invention relates to a system for coupling a trip unit to at least one circuit breaker, wherein the circuit breaker comprises a rotatably mounted between a Verklinkungs- and a Entklinkungswolf trigger lever having a hollow shaft in its axis of rotation, wherein the trip unit one between a resting and a Triggering position rotatably mounted coupling lever comprises, wherein a coupled to the coupling lever trigger finger is inserted into the hollow shaft, according to the preamble of claim 1.
  • the invention further relates to a trigger finger for coupling a trip unit to at least one circuit breaker, wherein the circuit breaker comprises a rotatably mounted between a Verklinkungs- and a Entklinkungswolf trigger lever having a hollow shaft in its axis of rotation, wherein the trip unit one between a rest and a release position rotatably mounted coupling lever, wherein the trigger finger is insertable into the hollow shaft, according to the preamble of claim 4.
  • the invention relates to a tripping lever for a circuit breaker ter, which is rotatably storable between a Verklinkungs- and a Entklinkungswolf in the circuit breaker and having a hollow shaft in its axis of rotation, according to the preamble of claim 6, and a composite between a trip unit and at least a circuit breaker according to claim 8.
  • a trip unit is known for example under the term shunt release.
  • a shunt release is an electrical service switching device that can be plugged as an additional module to a circuit breaker and with the help of the circuit breaker can be switched.
  • the coupling between see the shunt release and the circuit breaker is designed so that when triggering the shunt trip this brings the trip lever of the circuit breaker in its Entklinkungswolf, and releases the release lever of the circuit breaker otherwise.
  • DE 10 2006 055 322 A1 describes an electricity meter system which comprises a selective main circuit breaker to which a shunt release is coupled.
  • the shunt release and the circuit breaker are coupled by means of a bar-shaped release finger.
  • the beam-shaped release finger can not be positioned unambiguously so that misalignment may occur during the coupling in which the forced release no longer functions.
  • the object is achieved by a generic system with the characterizing features of claim 1. With respect to the release finger, the object is achieved by claim 4, and with respect to the release lever, the object is achieved by claim 6.
  • the release finger is a shaft whose axis of rotation coincides with the axis of rotation of the release lever, and whose outer diameter is adapted to the inner diameter of the hollow shaft, so that the shaft is rotatably supported in the hollow shaft, the release lever has a in the free interior the hollow shaft projecting guide pin having a first and a second, extending in the radial direction leading edge, the shaft has an axially extending, segment-like recess, which is bounded by extending in the radial direction of the first and second second wave application edges, which between the projection lines Shaft contact edges formed on the axis opening angle ⁇ of the recess is greater than the angle ß, which is formed in the region of the guide pin between the projection lines of the leading edge on the axis.
  • An advantage of the invention is that in the assembly of the coupling device against rotation and a clear mounting position is given, because the only guide pin can be in exactly one position in the segment-like recess in the shaft, which serves as a trigger finger insert. Due to the design of the release finger as a round shaft whose outer diameter is adapted to the inner diameter of the hollow shaft of the release lever, also a very good guidance of the release finger is given in the release lever. The trigger finger can not tilt.
  • a long shaft can also be inserted through a plurality of circuit breakers arranged side by side, wherein each guide pin engages each of the release levers of each circuit breaker in the recess.
  • the shunt release is designed so that its coupling lever is held in the tripping position after triggering, until a restart is allowed, then the trigger levers of all three connected circuit breakers are held in their respective Entklinkungswolf over the coupling device according to the invention.
  • an axis-side boundary surface of the recess is formed by a segment of a cylinder jacket surface.
  • the guide pin has a trapezoidal cross-sectional contour.
  • An inventive trigger finger for coupling a trip unit to at least one circuit breaker is a shaft having an axially extending, segment-like recess which is bounded by extending in the radial direction first and second shaft contact edges.
  • an axle-side boundary surface of the recess is formed by a segment of a cylinder jacket surface.
  • An inventive release lever for a circuit breaker which is rotatably storable between a Verklinkungs- and a Entklinkungswolf in the circuit breaker and having a hollow shaft in its axis of rotation, has a projecting into the free interior of the hollow shaft guide pin having a first and a second, in the radial direction extending leading edge.
  • the guide pin has a trapezoidal cross-sectional contour.
  • FIG. 1 shows the insight into a triggering unit with a coupling device according to the invention
  • FIG. 2 shows an enlarged view of the release finger according to the invention, connected to the coupling lever of the release unit and coupled to the release levers of three circuit breakers,
  • Figure 4 is a view of the position of the trigger finger on the trigger when triggered circuit breaker.
  • the trip unit 1 has an insulating housing 14, which is composed as a shell housing of two half-shells and corresponds in its peripheral contour and its dimensions to the insulating housing of a selective main line circuit breaker, as described for example in DE 10 2008 117 472 A1.
  • the upper half-shell is removed, so that the interior of the trip unit 1 is visible.
  • the trip unit 1 is attachable to a selective main circuit breaker either right or left, preferably it is attached to the right.
  • the insulating housing 14 has a front side, narrow sides, broad sides and a fastening side. With regard to the design of the attachment side and provided there assemblies for mounting the trip unit 1 on busbars in a meter box installation distribution, it also corresponds to the housing of a selective main line circuit breaker.
  • This comprises a magnetic circuit with a coil, a core, a movable armature and a plunger, the latter components are not shown in Figure 1.
  • a transmission assembly 18 is in the housing, mounted longitudinally displaceable about a housing fixed axis, a transmission assembly 18. Coupled to the transmission assembly 18, located near the front side a rotatably mounted coupling lever 3. This is arranged so that it Broad side of the housing penetrates approximately vertically.
  • the plunger of the impact armature system 17 strikes the transmission subassembly 18 from below.
  • the mechanical coupling of the transmission subassembly with the coupling lever causes the dome lever 3 is rotated clockwise and can trigger one or more attached circuit breaker by the coupling lever 3 is coupled through the housing broad sides through a trigger finger 4 with the or the release levers of the circuit breaker or.
  • the coupling lever 3 is configured as a release lever of a couplable circuit breaker.
  • the trigger finger 4 is inserted in the form of a wave in the direction of the housing broadside opening of the coupling lever 3.
  • three release levers 2, 2 ', 2 " are pushed, representing a triple block of three circuit breakers, which is coupled to the trip unit 1.
  • Fig. 2 shows an enlarged view of the release finger, which is in the coupling lever 3, with the deferred release levers 2, 2 ', 2 ".
  • Fig. 3 shows in cross-section an enlarged view of a release lever 2 with inserted in its hollow shaft trigger finger 4.
  • the release lever 2 is a double arm, which is in its installed position in the circuit breaker with a first arm with a trigger member in conjunction, and with his second arm with a switch lock to its unlatching cooperates. Both arms are integrally formed on a central part, which has the shape of a hollow cylinder.
  • the interior 6 of the hollow cylinder is also referred to here as a hollow shaft.
  • On the inside of the interior 6 an inwardly facing guide pin 7 is formed. This has a cross-sectional contour approximately in the form of a trapezoid having a height which is smaller than half of the inner radius of the cavity 6.
  • the trigger finger 4 has the shape of a shaft. Its axis of rotation 5 is congruent with the central axis of the inner space 6 of the hollow shaft. The outer diameter is only slightly smaller than the inner diameter of the inner space 6 of the release lever 2.
  • the shaft 4 carries a segment-like recess 10 which extends in the example of Figure 2 over an angular range ⁇ of about 90 °. Of course, other angular ranges are equally possible and encompassed by the invention.
  • the segment-like recess 10 is bounded radially by a first and second wave guide edge 11, 12, and downward, to the axis of rotation 5 of the shaft, by a curved surface which corresponds to a cylinder jacket section.
  • a total velvet, the cross-sectional contour of the recess 10 thus has the appearance of the letter W.
  • the leading edge 8 of the guide pin 7 is located on the shaft attachment edge 11 in the recess 10 of the shaft 4 at. Since the angle ß is smaller than the angle ⁇ , arises between the other, in the clockwise opposite, leading edge 9 and the other shaft contact edge 12, a free space whose angle corresponds to the difference of the angle ⁇ and ß.
  • the position corresponds to the rest position of the release lever 2.
  • the shaft 4 is rotated clockwise, such as by the coupling lever of the trip unit 1, then it takes on the mating surface of the shaft guide edge 11 with the leading edge 8th Release lever also clockwise with.
  • the release lever 2 is thus forcibly rotated in its release position in a clockwise direction.
  • the movement of the release lever stops at the other shaft contact edge 12.
  • the angle range ⁇ - ß must be sufficient for the release lever in the circuit breaker, in which it is installed, to release the latch mechanism.
  • Fig. 4 shows this state.
  • the shaft 4 still has the same position as that in Fig. 3, but the release lever 2 has been pivoted clockwise. This happened, for example, in that in the circuit breaker in which the trigger lever 2 is installed, a short-circuit current has been detected and then the trigger mechanism of the circuit breaker the release lever 2 is pivoted to its release position.
  • Fig. 2 shows the state in which the release lever 2 'and 2 "are in their rest position, and only the trigger lever 2 in its release position was pivoted.
  • the shaft 4 is simply inserted into the interior of the coupling element 3.
  • the coupling element 3 is otherwise designed exactly like a release lever.
  • the guide pin of the coupling element 3 is dimensioned such that there is no free space between it and the shaft contact edges of the shaft 4, so that the shaft 4 is to a certain extent firmly seated in the coupling element 3. It is a further advantage of the invention that for the coupling of the shaft 4 to the coupling element 3 no further precautions on the shaft 4 itself must be made, this can be prepared as a simple molded part with a uniform axially oriented recess 10 on its peripheral side.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

<span lang=FR style='font-family:"Courier New"'>L'invention concerne un système d'accouplement d'une unité de déclenchement (1) et d'au moins un disjoncteur de protection de circuit. Le disjoncteur de protection de circuit comprend un levier de déclenchement (2, 2', 2'', 2''', 2'''') monté pivotant entre une position d'encliquetage et une position de dégagement et possédant sur son axe de rotation un arbre creux. L'unité de déclenchement (1) comprend un levier d'accouplement (3) monté pivotant entre une position de repos et une position de déclenchement. Un doigt de déclenchement (4) couplé avec le levier d'accouplement (3) est introduit dans l'arbre creux. Le doigt de déclenchement (4) est un arbre (4) dont l'axe de rotation (5) coïncide avec l'axe de rotation du levier de déclenchement (2) et dont le diamètre extérieur est adapté au diamètre intérieur de l'arbre creux, si bien que l'arbre (4) est monté rotatif dans l'arbre creux. Le levier de déclenchement (2)</span> possède un tourillon de guidage (7) qui fait saillie dans l'espace intérieur libre (6) de l'arbre creux et qui possède une première et une deuxième arête de guidage (8, 9) orientées dans la direction radiale. L'arbre (4) possède une ouverture (10) en forme de segment, s'étendant dans la direction axiale, qui est délimitée par les première et deuxième arêtes d'appui de l'arbre (11, 12) qui sont orientées dans la direction radiale. L'angle d'ouverture a de l'ouverture (10), formé par les droites de projection des arêtes d'appui (11, 12) de l'arbre sur l'axe (5), est supérieur à l'angle ß qui est formé au niveau du tourillon de guidage (7) entre les droites de projection des arêtes de guidage (8, 9) sur l'axe (5). L'invention concerne en outre un doigt de déclenchement, un levier de déclenchement et l'association d'une unité de déclenchement et d'un disjoncteur de protection de circuit.
EP10713582A 2009-04-16 2010-04-09 Accouplement d'une unité de déclenchement et d'un disjoncteur de protection de circuit Withdrawn EP2419914A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910017682 DE102009017682A1 (de) 2009-04-16 2009-04-16 Kopplung einer Auslöseeinheit an einen Leitungsschutzschalter
PCT/EP2010/002229 WO2010118843A1 (fr) 2009-04-16 2010-04-09 Accouplement d'une unité de déclenchement et d'un disjoncteur de protection de circuit

Publications (1)

Publication Number Publication Date
EP2419914A1 true EP2419914A1 (fr) 2012-02-22

Family

ID=42227794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10713582A Withdrawn EP2419914A1 (fr) 2009-04-16 2010-04-09 Accouplement d'une unité de déclenchement et d'un disjoncteur de protection de circuit

Country Status (4)

Country Link
EP (1) EP2419914A1 (fr)
CN (1) CN102396042A (fr)
DE (1) DE102009017682A1 (fr)
WO (1) WO2010118843A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014118755B4 (de) * 2014-12-16 2020-03-12 Abb Ag Schaltgeräteanordnung mit wenigstens einem Schutzschaltgerät und einem daran angereihten Anbaugerät

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE80609B1 (en) * 1994-01-21 1998-10-21 Square D Co Improvements in and relating to circuit breakers
DE102005002799B3 (de) * 2005-01-20 2006-05-18 Siemens Ag Griffverbinder zur Kopplung von Bedienelementen zweier Module und Schaltgerät mit Griffverbinder
DE102006055322B4 (de) 2006-08-18 2014-09-11 Abb Ag Stromzählersystem sowie Trennschalter und Unterbrechungsvorrichtung dafür
KR100807545B1 (ko) * 2006-10-17 2008-02-28 엘에스산전 주식회사 기중 차단기의 카운터 장치
DE102008017472A1 (de) 2007-04-28 2008-11-06 Abb Ag Installationsschaltgerät

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2010118843A1 *

Also Published As

Publication number Publication date
CN102396042A (zh) 2012-03-28
DE102009017682A1 (de) 2010-10-21
WO2010118843A1 (fr) 2010-10-21

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