EP1005060A2 - Déclencheur à manque de tension - Google Patents

Déclencheur à manque de tension Download PDF

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Publication number
EP1005060A2
EP1005060A2 EP99122990A EP99122990A EP1005060A2 EP 1005060 A2 EP1005060 A2 EP 1005060A2 EP 99122990 A EP99122990 A EP 99122990A EP 99122990 A EP99122990 A EP 99122990A EP 1005060 A2 EP1005060 A2 EP 1005060A2
Authority
EP
European Patent Office
Prior art keywords
lever
release
pawl
spring
circuit breaker
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
EP99122990A
Other languages
German (de)
English (en)
Other versions
EP1005060A3 (fr
EP1005060B1 (fr
Inventor
Norbert Nitsche
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 EP1005060A2 publication Critical patent/EP1005060A2/fr
Publication of EP1005060A3 publication Critical patent/EP1005060A3/fr
Application granted granted Critical
Publication of EP1005060B1 publication Critical patent/EP1005060B1/fr
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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
    • 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

Definitions

  • the invention relates to an undervoltage release for electrical low-voltage circuit breakers.
  • Such an undervoltage release is, for example, from EP 0 620 580 B1 known. It comprises one that can be actuated by an electromagnet plunger-shaped magnet armature, which by applying a predetermined control voltage against the pressure of a first spring in a tightened position (Switch-on position of the undervoltage release) can be moved.
  • the pestle-shaped Magnetic armature acts on a pawl designed as a bell crank, the one in the attracted position of the magnet armature acted on the second spring and connected to a trigger slide Release lever holds. If the control voltage falls below a specified value off, the plunger-shaped magnet armature becomes pressurized by the first spring shifted outwards and pivots the pawl, which is the release lever releases.
  • the invention has for its object to provide an undervoltage release, which can also be moved towards the switch-on position if there is no control voltage on the electromagnet. Triggering the Circuit breaker by the undervoltage release should be during the switch-on process only be possible if an additional mechanical release of the undervoltage release takes place, the time of release largely can be selected as required.
  • the invention is essentially based on the idea that the undervoltage release one pivoted by a third spring Control lever includes, which is designed as a release lock.
  • the control lever presses the position of the undervoltage release the pawl that holds the release lever, the spring forces and the the interlocking surfaces of the interacting surfaces Lever arms are selected such that the undervoltage release is triggered not possible.
  • the control lever is pivoted and thus the release lock is released, the pawl and the Release lever only interlocked when on the electromagnet there is a sufficiently large control voltage. Otherwise there is a new one Trip of the circuit breaker.
  • control lever is such trained that he when the undervoltage release is used as intended engages in a switching gate of the circuit breaker and when turning on the circuit breaker is pivoted such that a first Lever arm of the control lever releases a second lever arm of the pawl, before the circuit breaker is in its "ON" switch position.
  • the trigger lever a stop on its side facing away from the trigger slide for a clamping cam arranged on the switching gate of the circuit breaker, on so that when the shifting gate is pivoted into the shift position "OFF" of the safety switch of the clamping cams pivots the release lever until until it locks with the pawl.
  • the circuit breaker comprises a switching link provided with a lever 2 3, by means of which the circuit breaker is in its "OFF" switch position (Fig. 1) in its switching position “ON” (Fig. 2) is pivotable.
  • the undervoltage release 1 has a plunger-shaped actuatable by an electromagnet 4 Magnetic armature 5, which is designed as a compression spring first spring 6 is acted upon.
  • the magnet armature 5 acts via spring-loaded lever-shaped transmission members 7, 8 on a trigger slide 9, which interacts with a trigger shaft of the circuit breaker, not shown, so the trigger wave is triggering a not shown Switch lock and opening of the switch lock connected, also causes not shown contacts.
  • the lever-shaped transmission links it is a trained as a lever pivotable pawl 7, the first lever arm 10 with the plunger-shaped Magnetic armature 5 and the second lever arm 11 connected to a push rod 12 is, as well as a trigger lever actuating the trigger slide 9 8, a recess 14 on its side facing the push rod 12 (Fig. 2), in which the push rod 12 in the switched-on position of the undervoltage release 1 engages (Fig. 1).
  • the trigger lever 8 is by a acted as a tension spring formed second spring 15.
  • the undervoltage release 1 further comprises an as Deflection lever trained pivotable control lever 16, which by a Compression spring designed third spring 17 is acted upon.
  • the first lever arm 18 of the control lever 16 and the third spring 17 are designed such that in the starting position of the control lever 16 shown in FIG the circuit breaker is in its off position and the undervoltage release are in its on position, the first lever arm 18 presses against the push rod 12 of the pawl 7 and thus the pawl 7 and the release lever 8 remain in their latching position, if there is no control voltage on the electromagnet 4.
  • the control voltage applied to the electromagnet 4 is too low (e.g. because there is a short circuit in the corresponding network) after release of the push rod 12 by the control lever 16 of the release lever 8 suddenly due to the tensile force of the second spring 15 panned.
  • the trigger lever 8 moves the trigger slide 9 (Fig. 2) so that this is no longer on the trigger shaft of the circuit breaker acts and causes the circuit breaker to empty.
  • lever 2 of the circuit breaker pivoted to switch position 0. It presses on the shift gate 3 arranged cam 20 against a stop 21 of the release lever 8 and pivots this against the pressure of the tension spring 15.
  • the second lever arm 19 of the control lever 16 is released and the first lever arm 18 presses on the push rod 12 with the force of the spring 17, that rolls on the trigger lever 8.
  • the trigger lever 8 is pivoted as long as until the push rod 12 into the recess 14 of the release lever 8 intervenes.
  • the pawl 7 is pivoted and the magnet armature 5 is pressed into its switched-on position by the first lever arm 10.
  • the control lever 16 again in its Starting position is (Fig. 1), his first lever arm 10 secures the now latching position of pawl 7 and release lever 8 reached.
  • the pawl and to form the release lever as a double lever the two of which are parallel sub-lever arranged to each other via at least one bow-shaped Connecting part are connected to each other and each of the partial lever different Functions can be assigned. So the first lever can only to control the trigger slide and the second lever only for latching be used with the pawl, the tension spring 15 on the bow-shaped connecting part acts between the two levers.
  • the tension spring 15 on the bow-shaped connecting part acts between the two levers.
  • Tension springs act on the release lever.
  • the pawl also consists of two partial levers arranged parallel to each other exists, is advantageously in the area of the first lever arm arranged first connecting part, which in a corresponding recess engages the plunger-shaped magnet armature.
  • the push rod can then be provided as a second connecting part be that when the release lever is latched into the recess of the corresponding Part of the trigger lever engages.
  • a compression spring can also be used as the third spring instead of a tension spring used when the corresponding spring on the trigger slide facing side is arranged.
  • the pawl be with a push rod is provided which in the recess 14 of the release lever 8 engages to latch the two levers, but the pawl can their end facing the release lever is itself designed accordingly or be provided with a bolt-shaped part.
EP19990122990 1998-11-23 1999-11-19 Déclencheur à manque de tension Expired - Lifetime EP1005060B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998153901 DE19853901C1 (de) 1998-11-23 1998-11-23 Unterspannungsauslöser
DE19853901 1998-11-23

Publications (3)

Publication Number Publication Date
EP1005060A2 true EP1005060A2 (fr) 2000-05-31
EP1005060A3 EP1005060A3 (fr) 2001-07-11
EP1005060B1 EP1005060B1 (fr) 2006-06-21

Family

ID=7888664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990122990 Expired - Lifetime EP1005060B1 (fr) 1998-11-23 1999-11-19 Déclencheur à manque de tension

Country Status (2)

Country Link
EP (1) EP1005060B1 (fr)
DE (1) DE19853901C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828955A1 (fr) * 2001-08-27 2003-02-28 Mitsubishi Electric Corp Disjoncteur
EP2426691A1 (fr) * 2010-09-06 2012-03-07 ABB Technology AG Dispositif de contournement mécanique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10145059C1 (de) * 2001-09-13 2003-03-13 Moeller Gmbh Schaltgerät
DE10320681B4 (de) * 2003-04-30 2006-10-19 Siemens Ag Schaltschloss zum Verklinken einer Schaltwelle und elektrischer Schalter mit einem derartigen Schaltschloss
EP2620970A1 (fr) 2012-01-26 2013-07-31 Eaton Industries GmbH Entraînement à distance doté d'un élément extensible

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE255819C (fr) *
EP0620580A1 (fr) * 1993-04-16 1994-10-19 Schneider Electric Sa Déclencheur auxiliaire pour disjoncteur

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE255819C (fr) *
EP0620580A1 (fr) * 1993-04-16 1994-10-19 Schneider Electric Sa Déclencheur auxiliaire pour disjoncteur

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828955A1 (fr) * 2001-08-27 2003-02-28 Mitsubishi Electric Corp Disjoncteur
DE10238533B4 (de) * 2001-08-27 2006-12-07 Mitsubishi Denki K.K. Schaltkreisunterbrecher
EP2426691A1 (fr) * 2010-09-06 2012-03-07 ABB Technology AG Dispositif de contournement mécanique
CN102436944A (zh) * 2010-09-06 2012-05-02 Abb技术有限公司 机械超驰设备
US8354904B2 (en) 2010-09-06 2013-01-15 Abb Technology Ag Mechanical override device
CN102436944B (zh) * 2010-09-06 2015-11-25 Abb技术有限公司 机械超驰设备

Also Published As

Publication number Publication date
DE19853901C1 (de) 2000-06-15
EP1005060A3 (fr) 2001-07-11
EP1005060B1 (fr) 2006-06-21

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