WO2015036011A1 - Appareil de coupure équipé d'un élément amortisseur pour le système de contacts - Google Patents

Appareil de coupure équipé d'un élément amortisseur pour le système de contacts Download PDF

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Publication number
WO2015036011A1
WO2015036011A1 PCT/EP2013/068708 EP2013068708W WO2015036011A1 WO 2015036011 A1 WO2015036011 A1 WO 2015036011A1 EP 2013068708 W EP2013068708 W EP 2013068708W WO 2015036011 A1 WO2015036011 A1 WO 2015036011A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
switching device
damping element
switching
contacts
Prior art date
Application number
PCT/EP2013/068708
Other languages
German (de)
English (en)
Inventor
Tobias KEMPTNER
Martin Steinbauer
Günter WIESENT
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2013/068708 priority Critical patent/WO2015036011A1/fr
Publication of WO2015036011A1 publication Critical patent/WO2015036011A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

Definitions

  • the invention relates to a switching device with a contact ⁇ slide unit, which has a contact slide, in wel ⁇ chem a movable contact piece is guided with contacts, and a fixed contact piece with contacts, which is arranged opposite to the movable contact piece.
  • Switching devices serve, among other things, the safe switching off in the event of a short circuit and thus protect consumers and systems. Further, electrical or mechanical switching devices for loading ⁇ instinctive manual switching of consumers and for si ⁇ Cheren separation of a plant from the power supply during maintenance work or changes in the plant are suitable. Electrical switching ⁇ units are often operated electromagnetically.
  • switching units are high-quality electrical switching devices with integrated protection for Mo ⁇ gates, lines, transformers and generators. They are used more closely at workstations with a lower switching frequency. Such switching units are suitable in addition to the short circuit protection for overload protection.
  • Switching unit safely disconnects an electrical system. Thus, this provides a protection against overload. Every conductor through which electricity flows heats up more or less. The heating depends on the ratio of the current to the conductor cross-section, the so-called current density. The current density must not be too large, otherwise the conductor insulations may be spattered or possibly cause a fire due to excessive heating. To protect electrical equipment against these damaging effects, switching units are used as overcurrent protective devices. Circuit breakers have two separate release mechanisms for overload and short-circuit protection. Both triggers are connected in series. The protection in the event of a short-circuit takes over a temporally almost instantaneous act ⁇ the electromagnetic release. In the event of a short circuit, the electromagnetic release unlocks without delay a circuit breaker of the circuit breaker. A switching armature disconnects the contactor before the short-circuit current can reach its maximum value.
  • Known switching units have a contact slide unit with a contact slide and a movable contact piece.
  • the movable contact piece also has electrical contacts.
  • switching units have first contacts to a power line.
  • the electrical contacts of the movable contact piece contact the fixed contacts of the switching unit.
  • the electrical contacts of the movable contact piece are released from the fixed contacts, so that the flow of current is interrupted.
  • the movable contact is released from the fixed contacts.
  • circuit breakers In addition to their protective functions as overload and short-circuit releases, as already mentioned above, circuit breakers also fulfill the normative switching on and off of motors. To prove these functions, the circuit-breakers must be able to switch on ten times the rated motor current according to the product standard. In order to be able to ensure this limit load, it is necessary that the circuit breaker the Doppelunterbre ⁇ tion of the three current paths in the form of a respective movable bridge with two contact points and two fixed Needlesstel ⁇ len, almost simultaneously and in a jump function
  • the spring-loaded in the form of a contact load spring determines the kinematics of the contact system when switching. After striking the bridges on the Festschalt consultancyen the contact slide accelerates until it is reflected at a stop. Due to the reflection and the resulting kinetic energy of the contact slide, a he ⁇ neute opening of the contact system. This can lead to welds with a simultaneously increased current in this current path.
  • the object of the present invention da ⁇ rin to provide a switching device with a contact slide unit with ei ⁇ NEM contact slide and a movable contact piece , in which a reflection of the contact slide during the switching and thus reopening of the contacts of the movable and the fixed contact piece prevented becomes .
  • This object is achieved by a switching device with the features of claim 1. More exporting ⁇ approximately examples of the invention emerge from the dependent claims, the description and the drawing. According to the invention this object is achieved by a switching device with a contact slide unit having a Needlesschie ⁇ ber, in which a movable contact piece is guided with contacts, and a fixed contact piece with contacts, which is opposite to the movable contact piece .
  • the invention is characterized in that above the contact slide, a damping element is arranged, which is designed such that a reflection of the accelerated contact slide on a Shift lever of a switching mechanism and a subsequent repeated opening of the contacts of the movable and the fes ⁇ th switching piece is excluded.
  • the contact slide Due to the high forces of the contact load spring, which are necessary due to the large device ratings, the contact slide is further accelerated after the contacts are closed, thereby strikes the lever, is reflected by this and opens during the collision with the bridge again the contacts , which can lead to Ver ⁇ welds, which in turn can lead to the failure of the device.
  • the essence of the invention is now to use a damping element which is either part of the upper part itself. can be part of a present in the upper part assembly or a part.
  • the object of this Dämpfungsele ⁇ ment is the contact slide, after the device has been turned on by means of quick turn on, the kineti- see energy to avoid and thus to avoid reflecting the contact slide and thus opening the contacts.
  • the damping element is formed such that the kinetic energy of Kon ⁇ clock slider is convertible into a self-deformation energy. That is, the damping element according to the invention is deformed upon impact of the contact slide to minimize the kineti ⁇ cal energy of the contact slide.
  • a further advantageous embodiment of the invention can be designed such that the damping element is designed as an elastomeric cushion or as a counter-spring, which dampens the kinetic energy of the contact slide and prevents the contact slide from coming into contact with the switching lever.
  • the damping element has a rebound slope. This would mean that a contact slide which accelerates in the direction of the shift lever is braked by the action of force.
  • the contact slide is now subjected to a transverse force and a torsional moment in non-central arrangement of the rebound bevel. These in turn result in frictional forces between the contact slide and the contact slide guide in the lower part, which brake the contact slide and prevent it from reflecting.
  • the switching device is preferably a circuit breaker.
  • the invention is characterized in that by using a damping element which is arranged on the upper part or on an assembly located in the upper part or part, the contact slide is effectively damped and a reflection and a subsequent opening of the Kon ⁇ clocks of the movable and fixed contact is prevented.
  • the invention is particularly advantageous to execute the Dämpfungsele ⁇ ment with a rebound slope, since the rebound ⁇ oblique part of an existing module or a part may be, so that no additional part is needed.
  • the invention is also distinguished by the fact that it is not necessary to deviate from the usual assembly processes.
  • the damping element also assumes also the radio ⁇ tion of a stop, that is, so it prevents Welding of the copper current paths when the silver material is burned.
  • Figure 1 is a sectional view of a switching device in the reflection of the accelerated contact slide on the shift lever from the prior art.
  • FIG. 2 is a sectional view of a switching device according to the invention with a damping element in the switched-on state;
  • FIG. 3 shows a sectional view of an inventive switching device with damping element in the off state.
  • FIG. 4 is a sectional view of an inventive switching device with an elastomeric pad or a counter-spring as a damping element.
  • Fig. 5 in a sectional view of an inventive switching device with a damping element with rebound bevel.
  • Fig. 1 shows a switching device of the prior art with a contact slide unit 1, which has a contact slide 2, in which a movable contact piece 3 is guided with contacts 4. Opposite to the moving one
  • Switching piece 3 with the contacts 4 is a fixed contact piece 5 is arranged with contacts 6. Below the mobile
  • a spring element 8 is arranged in the lower part 7 of the contact slide 2.
  • the switching device also has a switching mechanism 9, which is in operative connection with a shift lever 10.
  • Fig. 1 shows the switching device in the on ⁇ switched state.
  • Fig. 2 shows an inventive switching device with the same arrangement of the components as in Fig. 1 and with an additional damping element 11.
  • the switching device is also in the on state.
  • the damping element 11 according to the invention is above the contact slide 2 is ⁇ arranged at a height such that a reflection of the ACCEL ⁇ -adjusted contact slide 2 on the gear lever 10 of the switching Schlos ⁇ ses 9 and a subsequent repeated opening of the Mais ⁇ te 4, 6 of the movable and of the fixed contact piece 3, 5 is excluded.
  • the damping element 11 may preferably be formed as an elastomer cushion or as a counter-spring, which dampen the kinetic energy of the contact slide 2 and prevent the contact slide 2 comes into contact with the shift lever 10.
  • Fig. 3 shows the embodiment of FIG. 2, wherein the switching device is now in the off state.
  • FIG. 4 shows the embodiment of FIGS. 2 and 3, wherein the impact moment of the contact slide 2 on the inventive ⁇ Shen damping element 11 is shown.
  • a further embodiment of the inventions ⁇ to the invention damping element 11 is shown, which has a rebate slope 12. Due to the rebound slope 12, an accelerated in the direction of lever 10 contact slide 2 is braked by force.
  • the contact slide 2 with egg ⁇ Q ner transverse force F T M and torsional moment is applied at not central to the proper ⁇ Abprallschräge 12th
  • ⁇ derum frictional forces F R between the contact slider 2 and the contact-slide guide in the lower part 7 of the contact slide 2 result, which brake the contact slide 2 and prevent reflection.
  • the invention is characterized in that by using a damping element which is arranged on the upper part or on an assembly located in the upper part or part, the contact slide is effectively damped and a reflection and a subsequent opening of the Kon ⁇ clocks of the movable and the fixed contact is prevented. It is particularly advantageous to execute the Dämpfungsele ⁇ ment with a rebound slope, since the rebound ⁇ oblique part of an existing module or a part may be, so that no additional part is needed.
  • the invention is also distinguished by the fact that it is not necessary to deviate from the usual assembly processes.
  • the damping element also assumes also the radio ⁇ tion of a stop, that is, so it prevents Ver ⁇ weld the copper current paths when the silver material is burned.

Landscapes

  • Slide Switches (AREA)

Abstract

L'invention concerne un appareil de coupure équipé d'un ensemble curseur de contact (1) qui comprend un curseur de contact (2) dans lequel est guidé une pièce de contact mobile (3) équipée de contacts (4) et une pièce de contact fixe (5), équipée de contacts (6), qui est disposée face à la pièce de contact mobile (3). L'invention est caractérisée en ce qu'un élément amortisseur (11) est disposé au-dessus du curseur de contact (2). Cet élément amortisseur (11) est configuré de façon à exclure un rebond du curseur de contact (2) accéléré sur un levier de manœuvre (10) d'une serrure de manœuvre (9) suivi d'une réouverture des contacts (4, 6) des pièces de contact mobile et fixe (3, 5).
PCT/EP2013/068708 2013-09-10 2013-09-10 Appareil de coupure équipé d'un élément amortisseur pour le système de contacts WO2015036011A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/068708 WO2015036011A1 (fr) 2013-09-10 2013-09-10 Appareil de coupure équipé d'un élément amortisseur pour le système de contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/068708 WO2015036011A1 (fr) 2013-09-10 2013-09-10 Appareil de coupure équipé d'un élément amortisseur pour le système de contacts

Publications (1)

Publication Number Publication Date
WO2015036011A1 true WO2015036011A1 (fr) 2015-03-19

Family

ID=49261494

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/068708 WO2015036011A1 (fr) 2013-09-10 2013-09-10 Appareil de coupure équipé d'un élément amortisseur pour le système de contacts

Country Status (1)

Country Link
WO (1) WO2015036011A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3074355A1 (fr) * 2017-11-28 2019-05-31 Schneider Electric Industries Sas Dispositif de coupure d'un courant electrique
CN112992589A (zh) * 2019-12-12 2021-06-18 德丰电创科技股份有限公司 用于电气开关的接触杆组件

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002370A2 (fr) * 1989-07-28 1991-02-21 Federal Pioneer Limited Disjoncteurs miniatures
WO2006069956A1 (fr) * 2004-12-23 2006-07-06 Siemens Aktiengesellschaft Procede et dispositif pour assurer la securite de fonctionnement d'un appareil de distribution
DE102007013572A1 (de) * 2007-03-21 2008-10-09 Siemens Ag Kontaktsystem mit einer Schaltbrücke
EP2381460A1 (fr) * 2010-04-21 2011-10-26 Abb Ag Commutateur d'installation doté d'une double coupure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002370A2 (fr) * 1989-07-28 1991-02-21 Federal Pioneer Limited Disjoncteurs miniatures
WO2006069956A1 (fr) * 2004-12-23 2006-07-06 Siemens Aktiengesellschaft Procede et dispositif pour assurer la securite de fonctionnement d'un appareil de distribution
DE102007013572A1 (de) * 2007-03-21 2008-10-09 Siemens Ag Kontaktsystem mit einer Schaltbrücke
EP2381460A1 (fr) * 2010-04-21 2011-10-26 Abb Ag Commutateur d'installation doté d'une double coupure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3074355A1 (fr) * 2017-11-28 2019-05-31 Schneider Electric Industries Sas Dispositif de coupure d'un courant electrique
CN109841431A (zh) * 2017-11-28 2019-06-04 施耐德电器工业公司 电流开关装置
EP3503144A1 (fr) * 2017-11-28 2019-06-26 Schneider Electric Industries SAS Dispositif de coupure d'un courant électrique
CN109841431B (zh) * 2017-11-28 2022-09-02 施耐德电器工业公司 电流开关装置
CN112992589A (zh) * 2019-12-12 2021-06-18 德丰电创科技股份有限公司 用于电气开关的接触杆组件

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