EP2620970A1 - Entraînement à distance doté d'un élément extensible - Google Patents

Entraînement à distance doté d'un élément extensible Download PDF

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Publication number
EP2620970A1
EP2620970A1 EP12152577.8A EP12152577A EP2620970A1 EP 2620970 A1 EP2620970 A1 EP 2620970A1 EP 12152577 A EP12152577 A EP 12152577A EP 2620970 A1 EP2620970 A1 EP 2620970A1
Authority
EP
European Patent Office
Prior art keywords
remote drive
switching
switching device
remote
drive
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Withdrawn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
EP12152577.8A
Other languages
German (de)
English (en)
Inventor
Christoph Bausch
Günter Baujan
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
Eaton Industries 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 Eaton Industries GmbH filed Critical Eaton Industries GmbH
Priority to EP12152577.8A priority Critical patent/EP2620970A1/fr
Priority to PCT/EP2013/050886 priority patent/WO2013110547A1/fr
Priority to DE112013000717.7T priority patent/DE112013000717A5/de
Publication of EP2620970A1 publication Critical patent/EP2620970A1/fr
Withdrawn legal-status Critical Current

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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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/18—Electrothermal mechanisms with expanding rod, strip, or wire
    • 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
    • H01H71/50—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
    • H01H2071/565—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel using a add on unit, e.g. a separate rotary actuator unit, mounted on lever actuated circuit breakers
    • 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

Definitions

  • the invention relates to a remote drive for an electrical switching device.
  • remote drives usually use switching elements that use a magnetic drive or a motor drive.
  • the switching elements act directly or indirectly on an actuator of the switching device, so that it can be switched.
  • EP 0 828 278 B 1 discloses a remote drive for a low-voltage circuit breaker, which is to be connected as a module with the circuit breaker.
  • the switching of the circuit breaker is carried out by means of two indirectly actuated by a current pulse driven magnetic drive rods.
  • the EP 0 506 066 B1 discloses a motor drive for an electrical switching device.
  • the switching of the switching device takes place there by a release of stored energy of two spring energy storage. By using two switching elements, the switching device is both switched on and off.
  • the motor drive is used to charge the spring energy storage. The release of the energy of the spring energy storage takes place remotely via an electromagnet.
  • Remote drives that operate with magnetic drive or motor drive have some disadvantages.
  • a motor drive for a remote drive is complex and therefore expensive in construction.
  • the complex structure leads to the requirement of a relatively large volume of construction.
  • a magnetic drive also has the disadvantage of requiring a high tightening current, which in turn leads to higher costs.
  • the switching process is often too fast, so that Additional components are needed to reduce switching speeds, or components with higher strength are needed.
  • a remote release for triggering a circuit breaker, which operates with a thermally sensitive switching element is in the EP 0 513 423 A1 described.
  • the switching element in particular comprises a bimetal which can be heated by means of a PTC element. From a distance, a voltage can be applied to the PTC element. As a result of the heating of the bimetal this is deflected so that a pawl of a switching mechanism slips off a Verklinkungsstelle and triggers the switch lock it.
  • Other remote triggers for triggering a circuit breaker work with a magnetically sensitive switching element, such as in EP 1 005 060 B 1 described.
  • the disadvantage here is that switching on or off of the switch is not possible because bimetals or small electromagnets can not meet the usually higher demands on force or stroke.
  • the invention is therefore based on the object of making the structure of a remote drive as simple as possible, and at the same time to avoid the disadvantages mentioned above.
  • the remote drive comprises a thermally sensitive switching element, which is intended to switch the switching device.
  • the switching element comprises a Dehnstoffsch for receiving a Dehnschers and a piston element.
  • a change in volume of the expansion material causes a displacement of the piston member relative to a fixed part of the switching element.
  • Each subsequent reference to displacement of the piston element is understood to mean the relative displacement with respect to the fixed part of the switching element.
  • the expansion chamber preferably has a cylindrical basic structure with two end faces.
  • the Dehnstoffsch limited at least partially an interior, in which is an expanding material.
  • one of the end faces of the Dehnstoffwait is closed, the other end face partially open, so that the piston member can engage through the open end face in the interior of Dehnstoffwait.
  • expansion material is understood to mean any suitable substance which changes its physical properties, in particular its volume, under the influence of changes in the temperature.
  • Particularly suitable waxes contain wax, oil and / or paraffin.
  • the piston element may for example be in the form of a piston rod but also in the form of a suitably shaped disc or a combination of the two. Also, the piston member may be formed such that the open end side of the Dehnstoffsch can be substantially closed by the piston member.
  • piston member may also take any shape that is adapted to allow a displacement of the piston member due to volume change of the expansion material.
  • the switching element may further include, for example, a membrane through which, for example, one of the end faces of the Dehnstoffsch is closed.
  • the piston element is not in direct contact with the expansion material.
  • the piston element is preferably operatively connected to the expansion material in such a way that a displacement of the piston element with respect to a stationary part of the switching element, for example relative to the expansion chamber or to a part of the expansion chamber, can be obtained at a change in volume of the expansion substance caused by temperature. If the piston element is designed in the form of a piston rod arranged partially within the expansion chamber, then a change in volume of the expansion substance in this case causes the piston rod to be pushed at least partially out of the expansion chamber.
  • the switching of the switching device is preferably made possible in that the piston element of the switching element with an actuating element of the switching device in Active compound is brought.
  • the piston element may be a mechanical operative connection.
  • the piston element is coupled to a shaft of the actuating element, so that a displacement of the piston element can cause a rotation of the shaft.
  • the operative connection between the piston element and the actuating element can be produced by means of a cam.
  • the cam can be fastened, for example, directly against rotation on the shaft of the actuating element.
  • a rack is correspondingly provided to establish the operative connection between the piston element and the actuating element.
  • the remote operator preferably comprises a connecting rod which is connected to the piston element.
  • the connection between the piston element and the connecting rod is advantageously designed such that a change in volume of the expansion substance causes a displacement of the connecting rod.
  • the displacement of the connecting rod takes place along a longitudinal axis of the connecting rod.
  • the connecting rod may be at an initial temperature of the expanding material in an initial position, for example, at least partially disposed within the Dehnstoffsch.
  • the connecting rod Upon heating of the expansion material whose volume increases, which is displaced by means of the piston member, the connecting rod along its longitudinal axis. At a final temperature of the expansion material it reaches its final position. If the expansion material is then cooled to the initial temperature, the connecting rod can be moved back to its original position.
  • the remote drive comprises a force storage.
  • This may, for example, be a spring accumulator.
  • the spring accumulator can advantageously be provided with a toggle lever or a pawl.
  • the energy accumulator is loaded by the actively connected displacement of the piston element and can be discharged for switching the switching device by means of a suitable device, for example a magnet.
  • the energy accumulator is loaded by the actively connected displacement of the piston element and also discharged.
  • the discharge of the energy storage takes place in this case, for example by unlocking a suitable arranged on the energy storage latch.
  • the application of the energy storage has the advantage of a relatively fast switching operation in the switching device.
  • the remote drive on a spring element is arranged such that the relative displacement of the piston element, which is caused for example by an increase in volume of the expansion material, takes place counter to the spring force of the spring element.
  • This refinement has the advantage that the displacement of the piston element can be reversed automatically, as a result of the spring force, as soon as the expansion substance, or its volume, permits this after completion of the switching process. Also, the displacement of the piston element in a volume reduction or even in both volume changes (increase and decrease) against the spring force.
  • the remote drive comprises a preferably electric heating device for heating the switching element.
  • the heating of the switching element by means of a PTC element or by means of heating wires is particularly preferred.
  • the heating device can be arranged on the expansion chamber or on the piston element.
  • the remote drive according to the invention in a preferred embodiment may include a disconnect contact.
  • the isolating contact interrupts a power supply to the heater when the switching operation is completed.
  • the isolating contact is realized by a micro switch. If the energy or especially a power supply to the heating device is disconnected, the switching element can cool down and the displacement of the piston element can be stopped or reversed.
  • an electrical switching device equipped with a protective function can be in one of the following three states: a switched-on state in which the current flows through the switching device, an off state in which the current flow through the switching device is interrupted, and in a triggered Status. These conditions usually correspond to an ON, an OFF, and a TRIPPED position of the actuator of the switchgear.
  • the triggered state of the switching device is caused by a tripping of the protective function. In this state, the current flow is interrupted, but the switching device can not initially be directly transferred back to the on state.
  • an additional setting on the switching device must be carried out (“reset”), which usually takes place by means of a suitable mechanism (for example, the actuator of the switching device must first be brought to the OFF position or it must from the TRIPPED position to a certain Art be deflected briefly).
  • a suitable mechanism for example, the actuator of the switching device must first be brought to the OFF position or it must from the TRIPPED position to a certain Art be deflected briefly.
  • the actuating element is brought for example in an intermediate position between ON and OFF. From this intermediate position of the actuator out of the switching process can not be performed successfully.
  • the remote drive comprises an auxiliary switch in a preferred form.
  • the auxiliary switch is intended to disable the remote operator when the switchgear is triggered and the actuator is in the intermediate position or other position from which the switchgear can not be placed in the on state.
  • the voltage supply via the auxiliary switch after successful activation of the switching device by the remote drive is interrupted until, for example, the piston element has been returned so far that the reset can be performed.
  • This can be achieved, for example, by the auxiliary switch is mechanically locked and / or the auxiliary switch is held by the latch in the desired position.
  • the latching takes place when the switching element of the remote operator has switched on the switching device.
  • a disengagement of the auxiliary switch, whereby the inactivation of the Remote drive is terminated, for example, when the switching element of the remote operator has reached a position from which the switching device can be brought into the on state.
  • the remote drive is provided according to the invention that the remote operator is used as a power switch. If the remote drive is also operated in conjunction with a switching device with a protective function, the remote control switches in a further preferred embodiment, the switching device after a trip, for example, by overload, automatically again. For example, during the switching process units protected by the protective function can cool down. In another embodiment, it is also possible to provide the remote operator to turn off the switching device.
  • the remote drive comprises two switching elements. This makes it possible to use the remote operator both as a power switch and as a circuit breaker.
  • the remote drive according to the invention preferably has a housing.
  • the housing is designed such that it can be mounted on the switching device.
  • Suitable mounting variants are, for example, a front mounting or a side disc mounting or a combination of the two in question.
  • the remote drive according to the invention in an advantageous embodiment of a device which is intended to compensate for any temperature fluctuations in the spatial environment of the switching element.
  • the remote operator may be equipped with an undervoltage release, wherein the undervoltage release is preferably mounted as a separate part on the switching device. If one occurs before certain condition (for example, in the case of undervoltage), the undervoltage release switches off the switching device, for example by bringing the operating element of the switching device into the OFF or the TRIPPED position. At the same time, the power supply to the switching element is advantageously interrupted, so that the remote control can switch on the switching device again only when the power supply of the undervoltage release is restored.
  • FIG. 1a a remote drive 1, which has a housing 9.
  • the housing 9 is adapted to attach the remote drive 1 to a switching device 10, wherein the switching device 10 comprises an actuating element 101, which is provided for switching the switching device.
  • An undervoltage release 11 is shown attached laterally to the switching device 10.
  • FIG. 1b and 1c show the remote actuator 1 with a housing 9 according to the FIG. 1a , respectively in side and top view.
  • the same or similar elements of the remote actuator 1 are provided with the same reference numerals.
  • the remote drive 1 accordingly comprises a thermally sensitive switching element 2, by means of which the switching device 10 can be switched.
  • the switching element 2 in turn comprises a Dehnstoffsch 21 and a piston member 22 which is in the form of a piston rod.
  • Operatively connected to the piston element 22 is a connecting rod 3.
  • the expansion chamber 21 is intended to receive an expanding material.
  • the expansion chamber 21 has a cylindrical basic shape with two end faces. A Front side is open and serves to receive the piston element 22.
  • the piston element 22 always limits that part of the expansion chamber 21 in which the expansion material is located.
  • the piston element 22 is arranged displaceably.
  • the connecting rod 3 is in operative connection with the piston element 22, so that an increase in the expansion volume volume causes a displacement of the piston element 22 and the connecting rod 3
  • the piston element 22 If the piston element 22 is displaced by a change in volume of the expansion material, it is pushed out of the expansion chamber 21, so that it acts mechanically on a cam 5 via the operative connection produced by the connecting rod 3.
  • the cam 5 is connected to a shaft 6 of the actuating element 101 of the switching device 10 (see. FIG. 1a ) rotatably connected.
  • a displacement of the piston element 22 thus indirectly causes a corresponding rotation of the shaft 6 of the actuating element 101, whereby the switching device 10 is switched.
  • the expansion material in the expansion chamber 21 In order to achieve a displacement of the piston element 22 and the connecting rod 3, the expansion material in the expansion chamber 21 must increase its volume. The increase in volume is achieved by heating the expansion chamber 21 by means of a heating device 7.
  • the heating device 7 comprises a PTC element which can heat the expansion chamber 21 when a voltage is applied to the heating device 7. Furthermore, the remote drive 1 comprises a spring element 4. The spring element 4 is arranged on the connecting rod 3 in such a way that the displacement of the connecting rod 3 takes place against the spring force of the spring element 4 when the expansion volume increases.
  • the remote drive 1 also includes a break contact 8, which is designed as a microswitch.
  • the isolating contact 8 has the function to interrupt the power supply to the heater 7 after the switching operation. Accordingly, if the power supply to the heating device 7 is interrupted, the expansion material in the expansion chamber 21 cools down and its volume decreases. Due to the spring force of the spring element 4, the connecting rod 3 is then pushed back along the longitudinal axis 31 in the starting position.
EP12152577.8A 2012-01-26 2012-01-26 Entraînement à distance doté d'un élément extensible Withdrawn EP2620970A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP12152577.8A EP2620970A1 (fr) 2012-01-26 2012-01-26 Entraînement à distance doté d'un élément extensible
PCT/EP2013/050886 WO2013110547A1 (fr) 2012-01-26 2013-01-18 Commande à distance présentant un élément à expansion
DE112013000717.7T DE112013000717A5 (de) 2012-01-26 2013-01-18 Fernantrieb mit Dehnelement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12152577.8A EP2620970A1 (fr) 2012-01-26 2012-01-26 Entraînement à distance doté d'un élément extensible

Publications (1)

Publication Number Publication Date
EP2620970A1 true EP2620970A1 (fr) 2013-07-31

Family

ID=47561636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12152577.8A Withdrawn EP2620970A1 (fr) 2012-01-26 2012-01-26 Entraînement à distance doté d'un élément extensible

Country Status (3)

Country Link
EP (1) EP2620970A1 (fr)
DE (1) DE112013000717A5 (fr)
WO (1) WO2013110547A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109959050A (zh) * 2017-12-22 2019-07-02 北京绿能嘉业新能源有限公司 一种过热保护电暖坑板

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371415A2 (fr) * 1988-11-28 1990-06-06 Moeller GmbH Relais thermique à compensation des bilames
DE9206055U1 (fr) * 1991-05-17 1992-07-02 Siemens Ag, 8000 Muenchen, De
DE9206054U1 (fr) * 1991-05-17 1992-07-02 Siemens Ag, 8000 Muenchen, De
EP0513423A1 (fr) 1991-05-17 1992-11-19 Siemens Aktiengesellschaft Disjoncteur de protection de ligne avec déclenchement à télécommande
EP0506066B1 (fr) 1991-03-27 1995-05-24 Moeller GmbH Entraînement motorisé pour appareils de commutation électriques, notamment disjoncteurs
EP0828278B1 (fr) 1996-09-04 1999-09-22 Moeller GmbH Commande à distance pour disjoncteur de protection à basse tension
WO1999049490A1 (fr) * 1998-03-21 1999-09-30 Moeller Gmbh Disjoncteur a commande en rotation dote d'un contacteur auxiliaire a action avancee
EP1005060B1 (fr) 1998-11-23 2006-06-21 Moeller GmbH Déclencheur à manque de tension

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2644303B1 (fr) * 1989-03-07 1991-05-24 Gamet Gilbert Dispositif de reenclenchement automatique de disjoncteurs et disjoncteurs equipes d'un tel dispositif
CN101840796B (zh) * 2010-02-11 2012-12-19 冯运福 断路器闭合/断开执行机构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371415A2 (fr) * 1988-11-28 1990-06-06 Moeller GmbH Relais thermique à compensation des bilames
EP0506066B1 (fr) 1991-03-27 1995-05-24 Moeller GmbH Entraînement motorisé pour appareils de commutation électriques, notamment disjoncteurs
DE9206055U1 (fr) * 1991-05-17 1992-07-02 Siemens Ag, 8000 Muenchen, De
DE9206054U1 (fr) * 1991-05-17 1992-07-02 Siemens Ag, 8000 Muenchen, De
EP0513423A1 (fr) 1991-05-17 1992-11-19 Siemens Aktiengesellschaft Disjoncteur de protection de ligne avec déclenchement à télécommande
EP0828278B1 (fr) 1996-09-04 1999-09-22 Moeller GmbH Commande à distance pour disjoncteur de protection à basse tension
WO1999049490A1 (fr) * 1998-03-21 1999-09-30 Moeller Gmbh Disjoncteur a commande en rotation dote d'un contacteur auxiliaire a action avancee
EP1005060B1 (fr) 1998-11-23 2006-06-21 Moeller GmbH Déclencheur à manque de tension

Also Published As

Publication number Publication date
WO2013110547A1 (fr) 2013-08-01
DE112013000717A5 (de) 2014-11-06

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