EP1760748A2 - Appareil de commutation électrique - Google Patents

Appareil de commutation électrique Download PDF

Info

Publication number
EP1760748A2
EP1760748A2 EP06015649A EP06015649A EP1760748A2 EP 1760748 A2 EP1760748 A2 EP 1760748A2 EP 06015649 A EP06015649 A EP 06015649A EP 06015649 A EP06015649 A EP 06015649A EP 1760748 A2 EP1760748 A2 EP 1760748A2
Authority
EP
European Patent Office
Prior art keywords
release
lever
verklinkungsstelle
thermal
switching device
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
EP06015649A
Other languages
German (de)
English (en)
Other versions
EP1760748B1 (fr
EP1760748A3 (fr
Inventor
Jürgen Christmann
Ralf Dipl.-Ing. Weber
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 Patent 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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP1760748A2 publication Critical patent/EP1760748A2/fr
Publication of EP1760748A3 publication Critical patent/EP1760748A3/fr
Application granted granted Critical
Publication of EP1760748B1 publication Critical patent/EP1760748B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H71/52—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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to an electrical switching device according to the preamble of claim 1.
  • the invention relates to a circuit breaker used to shut down loads in the event of a short circuit or overcurrent.
  • the invention can also be applied to motor protection switches and RCCBs.
  • a circuit breaker has in its interior an electromagnetic actuator having a plunger armature electromagnet with a core and a movable armature around which a coil is wound.
  • the armature moves and on the one hand strikes the contact lever, so that the contact point is opened quickly; On the other hand, it also causes a permanent opening of the contact point via a switching mechanism.
  • the thermal release which is usually designed as a bimetallic release, acts on the switch lock exclusively to the permanent opening the contact point.
  • the bimetal is usually designed as a strip, which bends due to the different expansion coefficients of the interconnected metals.
  • a strip made of a shape memory alloy can also be used.
  • the switch lock between two boards is mounted, which are connected to each other and also have the bearings for the corresponding, the Verklinkungsstelle forming components or contain.
  • the electromagnetic actuator is located between the bimetallic strip and the contact lever, i. the contact lever is on one side and the bimetallic strip on the other.
  • the object of the invention is to further improve a switch of the type mentioned, in particular to simplify the assembly considerably.
  • the invention is therefore characterized in that the contact carrier for the movable contact piece between the thermal and the electromagnetic release is that the latch lever with a rotatably mounted, cooperating with the electromagnetic actuator and the thermal release trigger lever forms the Verklinkungsstelle, and that the thermal Trigger is coupled by means of a contact carrier cross-connecting rod with the release lever, so that both the thermal and the electromagnetic release in an over and / or short-circuit current open the Verklinkungsstelle, and that a rotatably mounted hammer is provided, on the one hand by the thermal release and on the other hand, is pivotable by the electrical release and when triggered the release lever in the direction of unlatching the Verklinkungsstelle pivoted.
  • the axis of rotation between Verklinkungsstelle and electrical release is arranged, wherein the first arm cooperates with the latch lever and the second arm with the thermal and magnetic trigger.
  • the second arm may cover the armature of the electromagnetic release.
  • the axis of rotation of the hammer is fixed on a line which is formed by the bearing points of the trigger or impact lever and the control handle, this line is approximately perpendicular to the mounting plane or to the front wall.
  • the vote between unlatching before striking the contact lever is significantly improved, since the tolerance chain has been shortened compared to that of the previous switch lock in the switch S2 of the company ABB Stotz contact GmbH, Heidelberg, considerably.
  • the vote is in one part in the release lever. The striker hits on the release lever which moves until the unlatching and only then occurs on the movable contact carrier to the opening.
  • FIG. 4 shows the views according to FIGS. 1 and 2 and
  • FIG. 3 shows a corresponding view from the back of the views shown in FIGS. 1 and 2.
  • a circuit breaker 10 which is partially visible in the area of its switching mechanism, has a housing 11, which is composed of a cup-shaped housing lower part and a cup-shaped housing upper part.
  • the lower housing part can be seen; in the figures 3 and 4, only the rear derailleur is shown as such with a part of the contact lever, wherein the housing 11 is omitted.
  • Fig. 3 shows the rear view of the rear derailleur for clarity.
  • the housing is of a pedestal type and has a front front wall 12, two rear front walls 13 and 14, not fully shown in the drawing, two front side walls 15 and 16 connecting the front front wall 12 to the rear front walls; Parallel to the front front wall or the rear front walls 13, 14 is a downwards the housing final mounting wall, which is not shown in the figures 1 to 4 and which is not relevant to the invention.
  • the front front wall 12 has an approximately semicircular bulge or protrusion 17, in the region of a bearing 18, a switch knob 19 is mounted.
  • the switch knob 19 is a double-arm, with a handle 20 and a located inside the switching device eye-shaped projection 21; in the eye-shaped extension 21, a passage opening 22 is introduced; the center of the passage opening 22, the center of the bearing 18 and the center line of the control handle 20 are in line or aligned with each other.
  • the switching handle 20 protrudes from an opening 23 in the protrusion 17 out.
  • a leg (not shown) of a bracket 24 is inserted, which has a U-shape, wherein the web 25 of the bracket in the figures 1 to 4 is visible.
  • the switching device further comprises a release lever 100 which is rotatably mounted about the axis 18 of the control handle 19.
  • a recess 101 which forms the Verklinkungsstelle with a locking lug 30 on the pawl lever 29.
  • the locking lug 30 on the pawl lever 29 is integrally formed on the end of the pawl lever 29, which opposite to the tab 27 (see FIG.
  • the latch lever 29 is rotatably mounted at its latching point 30, 101 opposite end via a pin assembly 40 in the housing (both in the lower housing part and in the upper housing part).
  • the switching mechanism In the closed position, in which the nose 30 rests against the recess 101, the switching mechanism is in the closed position, ie when the movable contact piece 38 contacts the fixed contact piece 39, in a first stable position, in which the central axis of the web 25 laterally in the embodiment of FIG. 2 on the left, next to the central axis of the bearing or the pivot bearing 18 of the switch knob 19 passes, so that the central axis of the leg 25 with the line formed by the central axis of the opening 22 and the central axis of the bearing 18 a blunt line Angle occupies that is open in the direction of Verklinkungsstelle 30/101.
  • the tab 27 and the latch lever 29 are approximately parallel to the front front wall. In the closed position, the bracket 24 pushes the tab away from the latching point 30/101, so that the resulting force generates the switch-on force.
  • the slot 35 lays down with its end, which on the side of the contact lever 34, on which the movable contact piece is located at. The slot 35 extends approximately perpendicular to the longitudinal extent of the contact lever 34th
  • the hammer 102 has a first arm 104, which extends into the region of the trigger lever 100 and cooperates with a nose 105, see also Fig. 3.
  • the hammer 102 further has a second lever 106 which projects approximately to the mounting plane and with its end the Striker 48 covered.
  • the arm 104 projects toward the front wall 12, and the arm 104 and the arm 106 form a Z-shape with each other, and the end portions of the arms 104 and 106 are approximately parallel to each other.
  • an end 49 of a connecting rod 50 is connected, hinged here, which by means of a pin 51, which projects perpendicular to the plane in this and therefore only shown in broken lines, behind a bimetallic strip 52, which is the thermal release, attacks.
  • the thermal release 52 is located between the pin 51 and the portion 106th
  • the longitudinal axis of the connecting rod 50 extends approximately perpendicular to the longitudinal extent of the bimetallic strip; in the embodiment according to FIGS. 1 to 4, the longitudinal extent of the bimetallic strip 52 with the fastening side forms an acute angle, which is open towards the electromagnetic release.
  • a compression spring 53 which acts on the contact lever clockwise about the bearing 36, so that the Compression spring 53, the switch-off, so that movement of the contact lever 34 from the position shown in FIG. 2 in the position shown in FIG. 1, supported.
  • the thermal release 52 bends, then the free end bends approximately in the direction of arrow P and thereby takes over the rod or connecting rod 50 the portion 100 of the hammer with, whereby the return 101 of the nose 30 and thereby removes the Latching is opened.
  • the beginning of the triggering is again shown in FIG. 3; the further procedure is the same as that described above.
  • the switch lock described with reference to a circuit breaker can also be used in a residual current circuit breaker; In this case, instead of the electromagnetic release 46, which responds to short-circuit current, a trigger should be used which responds to a fault current.
  • the switch lock for a motor protection switch, in which instead of a contact lever provided a contact carrier is, which carries a contact bridge, which in the ON state two fixed contacts, so a pair of contact pieces, electrically conductively connects.
  • a ramp be 108 against the extension of the projection 109 of the tab 27 comes to a stop during the triggering, which is clearly apparent from Fig. 4.
  • the release lever which is optionally coupled to a release lever in an adjacently arranged circuit breaker is further pivoted to its triggered position, so that the release lever is safely spent in the adjacent circuit breaker in its release position, so that there also the triggering process proceeds as described above.

Landscapes

  • Breakers (AREA)
EP06015649.4A 2005-08-31 2006-07-27 Appareil de commutation électrique Active EP1760748B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005041231A DE102005041231B4 (de) 2005-08-31 2005-08-31 Elektrisches Schaltgerät

Publications (3)

Publication Number Publication Date
EP1760748A2 true EP1760748A2 (fr) 2007-03-07
EP1760748A3 EP1760748A3 (fr) 2008-05-14
EP1760748B1 EP1760748B1 (fr) 2013-05-01

Family

ID=37488008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06015649.4A Active EP1760748B1 (fr) 2005-08-31 2006-07-27 Appareil de commutation électrique

Country Status (5)

Country Link
US (1) US7528690B2 (fr)
EP (1) EP1760748B1 (fr)
CN (1) CN1929068B (fr)
CA (1) CA2557682C (fr)
DE (1) DE102005041231B4 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007063636A1 (de) * 2007-03-01 2009-07-30 Siemens Aktiengesellschaft Fehlerstromschutzschalter, Differenzstromschutzschalter sowie Kombigerät aus Leitungsschutzschalter und Fehlerstromschutzschalter bzw. Differenzstromschutzschalter
DE102010004641B4 (de) * 2009-04-23 2021-02-18 Abb Ag Elektromagnetisches Auslösesystem und Installationsschaltgerät mit einem elektromagnetischen Auslösesystem
SK288388B6 (sk) * 2009-07-13 2016-09-05 Hess R&D, S. R. O. Spúšťový mechanizmus prúdového chrániča s nadprúdovou ochranou
US8134092B2 (en) * 2009-08-21 2012-03-13 Schneider Electric USA, Inc. Circuit breaker cover attachment
DE102009053012A1 (de) 2009-11-16 2011-05-19 Abb Ag Elektrisches Installationsschaltgerät
CN204118012U (zh) * 2014-08-27 2015-01-21 浙江正泰电器股份有限公司 断路器的操作机构
US10415261B2 (en) 2016-11-01 2019-09-17 Darrell Allen Outrigger support
US10053878B2 (en) 2016-11-01 2018-08-21 Darrell Allen Fall protection anchor
US10847333B2 (en) * 2018-09-17 2020-11-24 Siemends Industry, Inc. Circuit breakers including dual triggering devices and methods of operating same
US10984974B2 (en) * 2018-12-20 2021-04-20 Schneider Electric USA, Inc. Line side power, double break, switch neutral electronic circuit breaker
JP7246976B2 (ja) * 2019-03-07 2023-03-28 東洋電装株式会社 レバースイッチ
US11118363B1 (en) 2020-03-13 2021-09-14 Darrell Allen Saddle tie-back fall protection anchor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613871A3 (fr) 1987-04-08 1988-10-14 Ave Spa Interrupteur automatique magnetothermique

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US3983454A (en) * 1974-08-12 1976-09-28 Westinghouse Electric Corporation Distribution transformer secondary circuit breaker
US3950714A (en) * 1974-09-18 1976-04-13 Westinghouse Electric Corporation Self-adjusting circuit breaker with rotating trip assembly
GB1525157A (en) * 1975-08-06 1978-09-20 Ellenberger & Poensgen Multi-pole excess current circuit breaker
GB1492906A (en) * 1976-01-12 1977-11-23 Ottermill Ltd Electric circuit breaker
US4132967A (en) * 1976-04-29 1979-01-02 I-T-E Imperial Corporation Unitized combination starter
DE2933767C2 (de) * 1979-08-21 1982-08-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für Leitungsschutzschalter
DE3339399A1 (de) * 1983-10-29 1985-05-09 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg Selbstschalter mit lichtbogenblasfeld
US4625190A (en) * 1985-03-04 1986-11-25 Westinghouse Electric Corp. Remotely controlled solenoid operated circuit breaker
US4636760A (en) * 1985-04-10 1987-01-13 Westinghouse Electric Corp. Low voltage circuit breaker with remote switching function
US4714907A (en) * 1985-07-31 1987-12-22 Merlin Gerin Miniature electrical circuit breaker with multiple moving contacts and thermomagnetic trip release
DE3602072A1 (de) * 1986-01-24 1987-07-30 Fred Stahl Anbau, wie wintergarten, solaranbau und dgl., an ein wohnhaus
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Also Published As

Publication number Publication date
CN1929068B (zh) 2012-10-03
EP1760748B1 (fr) 2013-05-01
DE102005041231A1 (de) 2007-03-01
CA2557682A1 (fr) 2007-02-28
US20070046403A1 (en) 2007-03-01
DE102005041231B4 (de) 2009-11-26
EP1760748A3 (fr) 2008-05-14
CA2557682C (fr) 2014-01-21
CN1929068A (zh) 2007-03-14
US7528690B2 (en) 2009-05-05

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