EP1797577B1 - Elektrischer schutzschalter mit schutzfunktion - Google Patents

Elektrischer schutzschalter mit schutzfunktion Download PDF

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Publication number
EP1797577B1
EP1797577B1 EP06776595A EP06776595A EP1797577B1 EP 1797577 B1 EP1797577 B1 EP 1797577B1 EP 06776595 A EP06776595 A EP 06776595A EP 06776595 A EP06776595 A EP 06776595A EP 1797577 B1 EP1797577 B1 EP 1797577B1
Authority
EP
European Patent Office
Prior art keywords
double
shaft
drive shaft
trip unit
actuating
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.)
Active
Application number
EP06776595A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1797577A1 (de
Inventor
Klaus Dauer
Günter Baujan
Anke JÜLICH
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
Kloeckner 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 Moeller GmbH, Kloeckner Moeller GmbH filed Critical Moeller GmbH
Publication of EP1797577A1 publication Critical patent/EP1797577A1/de
Application granted granted Critical
Publication of EP1797577B1 publication Critical patent/EP1797577B1/de
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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
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
    • 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
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/322—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with plunger type armature

Definitions

  • the invention relates to an electrical circuit breaker with protection function in case of failure.
  • Such circuit breakers include a switch drive mechanism, separable contact current paths, an electromagnetic trip unit, an electromagnetic control module that controls a fault, and a manual operation unit for turning on and off and resetting the trip unit after a trip.
  • the trip unit mechanically acts on the switch drive mechanism (to open a biased latch, or contacts) in response to an OFF switch command.
  • Circuit breakers of this type can be designed as a motor protection switch or as a circuit breaker, which are used for switching on and off a load and have a protective function by disconnecting or interrupting the load in case of electrical faults. Electrical faults can be short circuits, overcurrents or undervoltage. Typical circuit breakers are also FI-switches (eg DE 4106652 A1 ), which are not used to turn ON and OFF loads.
  • the trip unit can be of the usual type, for example, as well as in the GB 1,558,785 described.
  • the magnetic mechanism consists of a magnet coil in a linearly movable, designed as a trigger tappet magnet armature, which is movable against the force of a storage pressure spring on a permanent magnet, and is held by this when the solenoid is de-energized.
  • the actuating unit is designed as a rotating device; this has a drive shaft, which is for turning on and off with the switch drive mechanism in Wikharm. Between the drive shaft and the trip unit there is a mechanical operative connection, by means of which upon actuation of the drive shaft from the OFF position in the opposite direction to the ON shift rotational movement, the reset. (Reset) of the magnetic mechanism of the trip unit, takes place.
  • the invention has for its object to make the operative connection between the actuating unit and trip unit so that both the switching mechanism and the mechanical energy storage can be actuated with it.
  • the switch concept is the principle of the energetically self-powered tripping concept. That is, the trip unit is in the activated position without a power supply, and with a relatively low current surge is able to strike the switch latch to open the contacts. To ensure this task, the trip unit is designed as a mechanical energy storage device. After a release action, the mechanical energy storage device must be reset manually. From the OFF position, the circuit breaker can not be switched to the ON position unless the trip unit is reset beforehand.
  • the reset movement of the trip unit by rotational movement of the drive shaft with an angular distance of 20 ° to 30 ° in the opposite direction to the ON-shift rotational movement.
  • the operative connection between actuating unit and trip unit triggering lever is a Doppelarmhebel whose first arm is acted upon by at least one entrainment means on the drive shaft, and the second arm causes the reset movement of the trip unit.
  • the second arm guides the magnet armature of the energy accumulator to the permanent magnet, the magnet armature (trigger plunger) being held by the holding force of the permanent magnet.
  • the triggering takes place by power surge through a magnetic circuit whose generated power flow overcomes the holding force of the permanent magnet.
  • the movement of the armature to the release position mechanically moves the switch mechanism and the drive shaft, actuating the lock and opening the switch mechanism and rotationally (in the OFF position) the drive shaft
  • the inventive arrangement can be used in a single-pole as well as multi-pole circuit breaker.
  • a significant advantage of the invention is that the mechanical actuator can be placed on the top of a circuit breaker, whereby the switch is only increased in height (vertical); in the horizontal dimension (in the installation dimensions) no change occurs.
  • the geometry of the involved manual actuating unit and its assignment to the trip unit is designed so that the double arm is mounted parallel to the axis of the drive shaft (actuating shaft) and the armature perpendicular to the double arm.
  • a mechanical operative connection between the drive shaft and the magnet mechanism is provided such that a rotation of the drive shaft is converted into a counter rotation of the double-armed lever, and the rotation of the double-arm lever is converted into a linear movement of the armature.
  • the armature moves by approx. 2.5 mm.
  • the mechanical design is that the second arm of the double-armed lever is designed as a fork and the armature is provided for engagement of the fork with a groove.
  • the drive shaft is made by assembling an actuating shaft and a slip-on shaft. This will be explained in detail in the description of the figures.
  • a, preferably colored mark can be attached on one of the arms of the double-arm lever.
  • a window in the housing of the circuit breaker is provided such that in the window, the mark either at the reset and the triggered position of the trip unit is visible from the outside. This allows an operator to immediately determine whether the circuit breaker can be turned ON - without resetting, or whether a reset of the trip unit must be made before the ON-circuit.
  • Trained as a knob actuating knob 42 is attached to the end of a drive shaft 40 and projects beyond the housing of the circuit breaker, not shown.
  • the drive shaft 40 is a multi-piece assembly of actuating shaft 44 and slip-on shaft 60. The assembly is separate and detailed in FIG Fig. 2 shown and described.
  • the trip unit 10 In the switched-off state of the circuit breaker (switch lock / contacts open), it is not possible to immediately put the circuit breaker in the on state.
  • the trip unit 10 operates as a mechanical energy storage and this must be curious for the time being.
  • the trigger unit 10 has a pot-shaped magnetic circuit and works with permanent magnetic holding force.
  • the magnetic armature 14, which is displaceable in the magnetic circuit, is in magnetic interaction with a permanent magnet 16 at one end and is designed as a trigger tappet at the other end.
  • the armature 14 is acted upon by a storage pressure spring 17.
  • the axis HA of the actuating shaft sits very close to the housing 11 of the trip unit 10 (see also FIG. 3 and FIG. 4 ).
  • the double-arm lever 30 is mounted axially parallel to the actuating shaft 44 and the armature 14 perpendicular to the Doppelarmhebel 30.
  • the activation of the trip unit is done by manual Unkswooung D1 of the toggle 42 (the drive shaft 40) about the axis HA of the drive shaft 40 from the OFF position by about 20 ° to 30 °; So in the opposite direction to the ON-switching movement. About this manual operation of the mechanical energy storage is transferred to the switch-on position.
  • two driving lugs 61 ', 61 are in operative connection with the first arm 32 of the trigger lever 30 designed as a double-arm lever.
  • Locking and releasing the switching mechanism is accomplished via a loaded with a return spring pawl 80.
  • the pawl 80 is rotatably mounted as a two-armed lever in the circuit breaker about an axis KA.
  • the pawl 80 is actuated against the force of the return spring with a driver element 36 at the lower end of the double-armed lever.
  • a dome 82 is present on the upper lever arm, which is acted upon by the driver element 36.
  • the triggering occurs at sufficiently high current to the winding of the trigger coil 12.
  • the magnetic attraction of the permanent magnet 16 is weakened and the armature 14 dissolves supported by the force the accumulator pressure spring 17 from (with movement L2).
  • Armature and Doppelarmhebel 30 are in positive operative connection via the groove 15 on the trigger plunger and the fork 35 on the double arm, so that the movement of the magnet armature is always transmitted to the Doppelarmhebel 30.
  • the linear path of the magnet armature is a few millimeters.
  • the rotational movement (H1, H2) of the double-arm lever 30 connected to the linear movement (L1, L2) is approximately 25 ° to 30 °.
  • a driver 36 is arranged below the plane of the double arm 30, which interacts with the pawl 80 of the switching mechanism (opening the contacts).
  • the movement L2 of the magnet armature 14 causes the opening of the contact system via the switching mechanism.
  • the drive shaft 40 is connected via an axially identical, positive-locking plug-in connection with catch means, not shown, with the switching mechanism in operative connection. With the movement of the drive shaft 40 via drive axle 115, the actuation of the switch lock (for ON and for OFF) is caused in both directions of rotation.
  • the trip unit 10 is housed in a plastic housing 11 in which substantially the magnetic coil 12 is mounted.
  • the housing 11 is on the top 110 of the switch arranged, in the embodiment, the housing via at least one fastening means (screw, plug or clamping means) (here a Tomsetzzylinder 19) with mounting counter means (here openings 119 on the top 110) is fixed.
  • the spatial assignment of the Aufsetzzylinders 19 is reproduced with the opening 119 through the line AA.
  • the main axis MA of the tripping unit 10 and thus also the axis of the tripping element designed as a magnet armature 14 is horizontal.
  • the drive shaft 40 has a vertical position in the circuit breaker. The longitudinal axis of the armature is thus 90 ° to the drive shaft 40th
  • a bearing SS for the Doppelarmhebel 30 is parallel to the axis HA of the drive shaft 40 is present.
  • the double-arm lever 30 is rotatably mounted in the bearing SS via the pin 20.
  • the drive shaft 40 is formed in two parts by placing an actuating shaft 44 and a slip-on shaft 60 past one another.
  • the knob 42, the actuating shaft 44, the slip-on shaft 60, and the switch drive lie in one axis.
  • the slip-on shaft 60 is hollow at the bottom and has a pin for placing the knob in the upper area.
  • a driving spike 62 and two driving lugs 61 ', 61 are formed on the plug-in shaft approximately at 180 °, and the driving spike 62 engages with the actuating shaft 44 in a driver segment 45 formed there Edge of Mitauerstachels 62 is in abutment in Mit videsegment 45. In the ON-switching movement thus the actuating shaft 44 is taken directly.
  • the aforementioned torsion spring 67 is used, which serves after the tensioning of the release unit of the provision of the slip-on against the actuating shaft and the drive shaft and in particular the knob in a unique OFF position.
  • the spring wire of the torsion spring 67 is bent outwardly at its one end 67 'and bears against the driving spike 62.
  • second end 67 'of the torsion spring 67 is bent inwards and summarizes in an axially parallel groove 44' of the actuating shaft 44.
  • the actuating shaft 44 has at the upper end a pin which comes to lie in the cavity of the slip-on shaft 60, and au lower end a hole for mounting on and for fixing to the drive axle 115 of the circuit breaker
  • the interdigitation of the driver pin 62 with the driver segment 45 is in Fig. 3 also recognizable.
  • the driver segment 45 has approximately a free circle segment angle of 50 °; the driving spike 62 has a free mobility between the stops of the driver segment of about 30 ° (spring travel of the torsion spring 67). This corresponds to the angular travel needed by the tensioning movement for the trip unit.
  • the distance between the individual parts is chosen to be particularly small.
  • the housing of the trip unit sits particularly close to the actuating shaft. Therefore, two driving lugs are attached to the operating shaft (slip-on shaft 60); one follower lug 61 'may pass above and another follower lug 61 "may pass below the trigger housing.
  • the slip-on shaft 60 engages the first arm 32 of the double-armed lever 30 in operative connection.
  • the second arm 34,35 of the double-armed lever 30 is in close operative connection with the magnet armature 14. This is realized in the embodiment such that the second arm 34 of the double-arm lever 30 as a fork 35 and the plunger-like or bolt-shaped magnet armature 14 aussenendig with a groove 15th is trained.
  • the fork 35 of the second arm 34 of the double-arm lever is non-positively in the groove of the armature.
  • the mechanical operative connection between magnet armature 14 and switching mechanism and the mechanical operative connection between actuating shaft 44 and magnet armature 14 is accomplished via a plug-in shaft 60 suitably designed for both functions.
  • the Fig. 3 shows a horizontal section through the arrangement.
  • the drive shaft 40 is in the OFF position. In this figure, the good space utilization of the arrangement is clearly visible.
  • the drive shaft is in the OFF position of the circuit breaker.
  • FIG. 4 shows one with the Fig. 3 comparable view of the trip unit, the double arm and the drive shaft 40.
  • the double arm 30 is shown here in its two end positions.
  • the drive shaft 40 is in the ON position of the circuit breaker and thus by 90 ° clockwise rotation relative to the position in Fig. 3 ,
  • the two clamping positions of the torsion spring 67 can be seen.
  • the first end 67 'of the torsion spring is by the entrainment of the Mit predominantlystachels 62 not shown (see Fig. 2 ) has been moved from a - dashed line - position in the position shown pulled through. Visible is still the groove 44 'of the actuating shaft (see also here Fig. 2 ). In this groove, the second end is 67 ° of the torsion spring 67th
  • the FIG. 4 also shows a creative way to visualize the position of the double-armed lever.
  • On an arm 34 of the double-armed lever 30 may be a color Mark 35 'be attached. Since the double lever is in a rigid relationship to the armature, it can be made to see if the trip unit is in reset position.
  • the mark on the trigger side (34) of the double-armed lever 30 is present.
  • the double arm lever is shown in two positions (dashed, drawn drawn).
  • a window F above the position of the arm 34 of the double-armed lever 30 is provided.
  • a green or red mark 35 ' may be provided.
  • the marking is visible or not visible. In the window can thus be made visible with the marker 35 'either the tripped (red mark) or the reset position (green mark) of the tripping unit from the outside. The operator can thus immediately detect whether the circuit breaker can be switched ON - without reset, or whether a reset must be made before the ON-circuit.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Lock And Its Accessories (AREA)
EP06776595A 2005-08-09 2006-08-04 Elektrischer schutzschalter mit schutzfunktion Active EP1797577B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005037437A DE102005037437B4 (de) 2005-08-09 2005-08-09 Elektrischer Schutzschalter mit Schutzfunktion
PCT/EP2006/007715 WO2007017188A1 (de) 2005-08-09 2006-08-04 Elektrischer schutzschalter mit schutzfunktion

Publications (2)

Publication Number Publication Date
EP1797577A1 EP1797577A1 (de) 2007-06-20
EP1797577B1 true EP1797577B1 (de) 2008-11-19

Family

ID=37027505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06776595A Active EP1797577B1 (de) 2005-08-09 2006-08-04 Elektrischer schutzschalter mit schutzfunktion

Country Status (6)

Country Link
US (1) US7733199B2 (zh)
EP (1) EP1797577B1 (zh)
CN (1) CN101128900B (zh)
AT (1) ATE414985T1 (zh)
DE (2) DE102005037437B4 (zh)
WO (1) WO2007017188A1 (zh)

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
CN102299030A (zh) * 2010-06-25 2011-12-28 Abb股份公司 磁系统和带有磁系统的安装开关设备
EP2551885A1 (de) 2011-07-28 2013-01-30 Eaton Industries GmbH Übertemperaturschutzeinrichtung für ein elektrisches Schutzschaltgerät
US9508206B2 (en) 2012-08-16 2016-11-29 Schlage Lock Company Llc Usage of GPS on door security
CN105659098A (zh) 2013-10-09 2016-06-08 施耐德电气美国股份有限公司 自足式分支电路监控器
US10079619B2 (en) 2013-11-26 2018-09-18 Schneider Electric USA, Inc. Wireless batteryless data processing unit
US9496101B2 (en) 2014-02-06 2016-11-15 Eaton Corporation Disconnect operating handles suitable for circuit breakers and related bucket assemblies and handle interlocks
US9484163B2 (en) 2014-02-06 2016-11-01 Eaton Corporation Disconnect operating handles suitable for circuit breakers and related bucket assemblies
DE102014202485B4 (de) * 2014-02-12 2021-08-05 Siemens Aktiengesellschaft Auslösevorrichtung
USD750577S1 (en) * 2014-03-24 2016-03-01 Eaton Corporation Switch handle for circuit breakers
USD751516S1 (en) 2014-03-24 2016-03-15 Eaton Corporation Switch handle for circuit breakers
USD762593S1 (en) 2014-03-24 2016-08-02 Eaton Corporation Switch handle for circuit breakers
USD765045S1 (en) 2014-03-24 2016-08-30 Eaton Corporation Switch handle for circuit breakers
US10008348B2 (en) * 2016-03-21 2018-06-26 General Electric Company Latch-free circuit breakers
US11195682B2 (en) * 2017-09-25 2021-12-07 Eaton Intelligent Power Limited Circuit interrupter, trip deck assembly, and support for switch therefor
CN110416033B (zh) * 2019-06-20 2021-03-23 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） 一种步进式塑壳断路器电动操作机构
CN113963978B (zh) * 2020-07-20 2023-01-10 上海良信电器股份有限公司 一种旋转开关
CN112216567A (zh) * 2020-10-30 2021-01-12 上海良信电器股份有限公司 旋转开关的操作装置及旋转开关
CN114284116B (zh) * 2022-03-04 2022-05-03 深圳市恒讯通电子有限公司 一种基于磁性保护的电开关

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DE2649038A1 (de) * 1975-10-30 1977-05-05 Gen Electric Elektrischer schalter
US4104601A (en) * 1976-04-12 1978-08-01 I-T-E Imperial Corp. Direct fault tripping of circuit breaker having solid state trip means
US5331301A (en) * 1990-02-23 1994-07-19 Square D Company Circuit breaker
US5089796A (en) * 1990-09-19 1992-02-18 Square D Company Earth leakage trip indicator
DE4106652A1 (de) * 1991-03-02 1992-09-10 Abb Patent Gmbh Fehlerstromschutzschalter
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Also Published As

Publication number Publication date
DE102005037437A1 (de) 2007-02-15
ATE414985T1 (de) 2008-12-15
DE502006002112D1 (de) 2009-01-02
US20090167468A1 (en) 2009-07-02
DE102005037437B4 (de) 2007-12-27
WO2007017188A1 (de) 2007-02-15
CN101128900B (zh) 2011-09-21
CN101128900A (zh) 2008-02-20
US7733199B2 (en) 2010-06-08
EP1797577A1 (de) 2007-06-20

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