EP2573788A1 - Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée - Google Patents

Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée Download PDF

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Publication number
EP2573788A1
EP2573788A1 EP11182093A EP11182093A EP2573788A1 EP 2573788 A1 EP2573788 A1 EP 2573788A1 EP 11182093 A EP11182093 A EP 11182093A EP 11182093 A EP11182093 A EP 11182093A EP 2573788 A1 EP2573788 A1 EP 2573788A1
Authority
EP
European Patent Office
Prior art keywords
housing
circuit breaker
switching device
walls
structures
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Withdrawn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
EP11182093A
Other languages
German (de)
English (en)
Inventor
Bernhard Rösch
Alexander Spies
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Priority to EP11182093A priority Critical patent/EP2573788A1/fr
Publication of EP2573788A1 publication Critical patent/EP2573788A1/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Withdrawn legal-status Critical Current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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H2071/0242—Assembling parts of a circuit breaker by using snap mounting techniques

Definitions

  • the invention relates to a circuit breaker comprising a housing in which a first switching device area, in which a quenching chamber device and a contact slide device are arranged with movable contact pieces, which are positioned opposite to Festschalt Georgiaen, and a second switching device area are arranged, in which a current release group of a short-circuit release and an overload release are arranged.
  • Circuit-breakers in particular low-voltage circuit breakers, are electromagnetic self-switches in the event of a short circuit. Their operation corresponds in principle to the operation of circuit breakers. They are usually equipped with a thermal and a magnetic release and thus have the same structural elements as circuit breakers. However, they are designed for larger rated currents, in addition, the triggers of circuit breakers, unlike the circuit breaker, sometimes separately adjustable. In the low voltage range, the switches are also used as motor protection switches.
  • the task of the circuit breaker is to protect downstream systems, in particular three-phase motors against damage due to overload or short circuit.
  • the circuit breaker should switch off these currents in conjunction with the network protection devices. If there is gas between the two poles, it will be ionized by the flashover with a correspondingly high voltage difference between the poles, forming a self-sustaining gas discharge, also known as an arc. This plasma not only continues to conduct power, but also reduces the life of the device, and at high currents it can even destroy the switch.
  • disconnectors are circuit breakers designed so that the arcing occurring when opening the switch contacts deleted quickly and without damaging the switch and thus the flow of current is interrupted.
  • the housing walls may bend outwards in such tripping operations or lead to a tear in the upper part of the circuit breaker. In the worst case, parts of the shell are broken off.
  • this electrical circuit breaker is provided to glue the preassembled Kunststoff connection parts of the trip unit in the housing or a housing part, so that the attachment of these preassembled contact and connecting parts in the housing takes place without additional connection.
  • adhesive pockets are present on the housing, which are filled with adhesive material. In these adhesive pockets protrude pins of the trip unit, which are glued in the adhesive pockets.
  • the permanent adhesive connection keeps the bimetallic position stable. Thermal and mechanical stresses are significantly reduced by the use of the adhesive and by bonding, while the heat and dimensional stability is ensured.
  • the object of the present invention is to provide a circuit breaker, which has stable housing walls even at high switching performance and thereby offers easy installation handling.
  • this object is achieved by a line switch with a housing in which a first switching device area in which a Löschhuntvorides and a contact slide device are arranged with movable contact pieces, which are positioned opposite to Festschalt Georgiaen, and a second switching device area are arranged, in which a current release group are arranged from a short-circuit release and an overload release.
  • the invention is characterized in that barbs-like housing structures are formed in the interior of the housing in the second switching device area from housing walls of the housing in the region of the second switching device area.
  • these barbs are similar housing structures formed integrally from the housing walls. Accordingly, it is essential to the invention that the production of a connection between two or more parts takes place without a connecting piece, that is, only by appropriate shaping of the connecting parts. This is done in particular by appropriate undercuts in the parts to be joined.
  • the advantage is that no additional part is needed, that is, existing components are occupied with additional functions without additional effort.
  • the barbs similar housing structures in counter contours, which are preferably formed on the current release group grab.
  • the housing of the second switching device area is stiffened by this arrangement.
  • the circuit breaker according to the invention is designed so that the housing is constructed in two parts, wherein the first switching device area are arranged in a lower housing part and the second switching device area in an upper housing part.
  • the circuit breaker is accordingly set together similar construction, which results in advantages in the assembly.
  • the upper housing part of the circuit breaker is divided by two additional housing walls in the interior of the upper housing part into three chambers.
  • the three phases of the current release group can be taken, which are each stabilized by the barb-like housing structures on the housing walls. It is of great advantage if the barbs similar housing structures are formed on the housing walls of a chamber lying opposite.
  • the upper housing part of the circuit breaker is preferably cuboid, each with two mutually parallel housing walls. Both the top and the bottom of the housing top are made open.
  • the upper housing part has in the interior two additional housing walls, which are arranged parallel to the later to be mounted Festschalt consultancyen the power release group. These additional housing walls divide the interior of the upper housing part into three chambers.
  • both the housing inner walls of the housing outer walls, as well as the additional housing walls of the interior, barbs have similar housing structures that engage after mounting the power trip group in the upper housing part in counter contours of the support of the current release group.
  • These barb-like housing structures are preferably formed integrally and L-shaped from the housing walls, so that a likewise L-shaped counter-contour on the support of the current release group can engage in the barbs similar housing structures.
  • the barbs form similar housing structures on the housing recesses in which engage the counter contours of the carrier of the current release group and thus allow the stabilization of the upper housing part in case of short circuit.
  • the invention is characterized in that a significant stiffening of the upper housing part of a circuit breaker can be achieved without the use of an additional part.
  • the barb-like housing structures according to the invention and the counter-contours on the support of the current release group, the Gescousoberteilausbiegung is reduced. As a result, occurring stresses in the upper housing part are reduced.
  • a fraction of the upper housing part is - if at all - shifted to larger short circuits, that is, to greater pressure loads of the upper housing part.
  • a significant advantage is that no additional part is needed, resulting in no additional costs.
  • Fig. 1 shows an upper housing part 1 of a circuit breaker.
  • the upper housing part 1 is preferably formed cuboid with two mutually parallel housing walls 2, 3 and 4, 5. Both the top 6 and the bottom 7 of the upper housing part 1 are made open.
  • the housing upper part 1 has in the interior two further housing walls 8, 9, which are formed parallel to the housing walls 4, 5 and the interior of the housing upper part 1 in three chambers 10, 11, 12 divided.
  • Fig. 2 the structure of the housing inner wall of housing outer wall 5 is shown.
  • barbs similar housing structures 13 can be seen, which engage in the housing upper part 1 in counter contours 14 of the carrier 15 of the current release group after mounting the current release group.
  • These barb-like housing structures 13 are preferably formed in one piece and L-shaped from the housing walls 4, 5 and 8, 9, so that a likewise L-shaped mating contour 14 on the carrier 15 of the current release group can engage in the barbs similar housing structures 13.
  • These barb-like housing structures 13 are also formed on the housing walls 8, 9 in the interior of the housing upper part 1 and on the inner wall of the housing wall 5.
  • the barbs similar housing structures 13 position exactly opposite.
  • Fig. 3 an arrangement of the carrier 15 of the current release group and the housing environment is shown.
  • the barb-like housing structures 13 form a recess into which the mating contours 14 of the carrier 15 of the current release group engage and thus enable the stabilization of the housing upper part 1 in the event of a short circuit.
  • the invention is characterized in that a significant stiffening of the upper housing part of a circuit breaker can be achieved without the use of an additional part.
  • the barb-like housing structures according to the invention and the counter-contours on the support of the current release group, the Gescousoberteilausbiegung is reduced. As a result, occurring stresses in the upper housing part are reduced.
  • a fraction of the upper housing part is - if at all - shifted to larger short circuits, that is, to greater pressure loads of the upper housing part.
  • a significant advantage is that no additional part is needed, resulting in no additional costs.

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  • Breakers (AREA)
EP11182093A 2011-09-21 2011-09-21 Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée Withdrawn EP2573788A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11182093A EP2573788A1 (fr) 2011-09-21 2011-09-21 Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11182093A EP2573788A1 (fr) 2011-09-21 2011-09-21 Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée

Publications (1)

Publication Number Publication Date
EP2573788A1 true EP2573788A1 (fr) 2013-03-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11182093A Withdrawn EP2573788A1 (fr) 2011-09-21 2011-09-21 Commutateur de puissance doté d'une stabilisation de boîtier optimisée, notamment à puissance de commutation élevée

Country Status (1)

Country Link
EP (1) EP2573788A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6922156U (de) * 1969-06-03 1969-11-06 Bbc Brown Boveri & Cie Haltevorrichtung fuer die halterung von schaltkammern in elektrischen schaltern
US4849725A (en) * 1987-06-12 1989-07-18 Fuji Electric Co., Ltd. Multipolar circuit breaker
WO2001033595A1 (fr) 1999-10-29 2001-05-10 Moeller Gmbh Disjoncteur electrique
WO2007009406A1 (fr) * 2005-07-20 2007-01-25 Oez S.R.O. Appareil de commutation, en particulier, disjoncteur de circuit de puissance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6922156U (de) * 1969-06-03 1969-11-06 Bbc Brown Boveri & Cie Haltevorrichtung fuer die halterung von schaltkammern in elektrischen schaltern
US4849725A (en) * 1987-06-12 1989-07-18 Fuji Electric Co., Ltd. Multipolar circuit breaker
WO2001033595A1 (fr) 1999-10-29 2001-05-10 Moeller Gmbh Disjoncteur electrique
WO2007009406A1 (fr) * 2005-07-20 2007-01-25 Oez S.R.O. Appareil de commutation, en particulier, disjoncteur de circuit de puissance

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