EP1439557B1 - Boîtier de coupure d'un appareil électrique interrupteur - Google Patents

Boîtier de coupure d'un appareil électrique interrupteur Download PDF

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Publication number
EP1439557B1
EP1439557B1 EP04100060.5A EP04100060A EP1439557B1 EP 1439557 B1 EP1439557 B1 EP 1439557B1 EP 04100060 A EP04100060 A EP 04100060A EP 1439557 B1 EP1439557 B1 EP 1439557B1
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EP
European Patent Office
Prior art keywords
switching
switching device
polar
front wall
trip system
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.)
Expired - Lifetime
Application number
EP04100060.5A
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German (de)
English (en)
French (fr)
Other versions
EP1439557A1 (fr
Inventor
Patrick Larcher
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.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1439557A1 publication Critical patent/EP1439557A1/fr
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Publication of EP1439557B1 publication Critical patent/EP1439557B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes
    • 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

Definitions

  • the present invention relates to a low-voltage switchgear electrical apparatus, in particular of the contactor, circuit breaker or contactor-breaker type, comprising a breaking box composed of two parts, each part forming a box surrounding arc-extinguishing fan units. for better rigidity and better resistance to gas pressure.
  • the invention also relates to a method of assembling such a switch device.
  • the switch device comprises a housing made of insulating material with a tank-shaped base whose bottom constitutes a rear face of the switch device.
  • the tank is open on the front so that the constituents of polar cutoff assemblies (that is to say for example: movable contact bridge, bridge actuator, contact pressure spring, holding cage the bridge, arc extinction fins, baffles, etc ...) can be introduced inside the tank from the front.
  • polar cutoff assemblies that is to say for example: movable contact bridge, bridge actuator, contact pressure spring, holding cage the bridge, arc extinction fins, baffles, etc .
  • the polar cutoff assemblies are completely or partially assembled prior to their introduction into the tank.
  • the tank is then covered by a cover or cover ensuring in particular the sealing and thus forming a breaking box divided into several breaking chambers for the various power poles of the apparatus light switch.
  • the cover also carries the trigger system which is capable of actuating the movable contacts of the apparatus.
  • This trigger system may consist for example of a mechanical lock block, a magnetic break block and / or a thermal cut-off block.
  • the junction between the tank and the lid must be studied carefully because it is subjected to high stresses related to the gas overpressure, particularly in the vicinity of the outer end of the fin blocks, corresponding to the zone where the overpressure of the gases is important.
  • the opening of the bowl of the cutoff box, and therefore the junction area between the tank and the lid extends over substantially the entire front face of the tank, otherwise it would be difficult to Insert the different components of the polar cutoff assemblies into the cutoff box, especially when they are assembled beforehand.
  • the area occupied by this junction zone is large and extends even in the vicinity of the end of the fin blocks. This results in significant forces due to the pressure which cause a mechanical fragility of the cutoff housing, which must be compensated in particular by substantial fastening devices to maintain a good seal between tank and lid.
  • One of the aims of the present invention is thus to offer a better mechanical strength and a better seal against the overpressure of the gases at this junction zone of the cutoff box by reducing the area occupied by the junction zone and by stiffening the different parts forming the breaking box.
  • the invention describes an electrical switch device according to claim 1.
  • each element of the switch case of the multipole switch device further comprises a partition wall between each adjacent pole, fixed to the rear walls and front and bottom of said element.
  • each element of the clipping box is preferably made of a single molded part.
  • the junction zone between the first and the second element of the junction box lies in a plane that is approximately parallel to the first and second horizontal faces of the junction box, whereas in the known solutions, this junction zone is in a substantially vertical plane perpendicular to the axis of horizontal displacement of the contact bridge. Since the height of the breaking box of such a switch apparatus is greater than its depth due to the arrangement of the breaking assemblies, it follows that the junction zone advantageously occupies a much smaller surface area with better mechanical strength. .
  • Another object of the invention is to provide a simple and fast method of assembling such an electrical switch device.
  • the assembly method comprises successively a step of inserting the polar cutoff assemblies inside the first element of the cutoff box, a step of hooking a trigger system against the first element, then a a step of fixing the second element of the breaking box to the first element so as simultaneously to close the breaking box and to allow the locking of the triggering system.
  • the latching step of the triggering system comprises a step of attaching a mechanical lock block to the first element and then a step of attaching a magneto / thermal block to the mechanical lock block.
  • an electrical switch device 10 for example of the type circuit breaker, contactor or contactor-circuit breaker monopolar or multipole, is responsible for performing the control and / or protection of a downstream electrical circuit, by switching lines The upstream current poles 75 to downstream polar lines 59.
  • these upstream current lines 75, respectively downstream 59, are connected to an upstream power supply circuit, respectively to a downstream load circuit, via terminal upstream respectively downstream of the switch device 10 which are not shown in the figures.
  • Each power pole of the switch device has a polar cutoff assembly 80, such as that schematized in FIG. figure 4 , which comprises a movable conductive bridge 83 supporting two movable contacts 84, 85 positioned on either side of a median horizontal axis X.
  • the bridge 83 is movable in translation along the axis of X displacement in a forward / backward direction, so as to separate or stick the movable contacts 84,85 of the bridge 83 with fixed contacts 76,56 upstream and downstream of the switch device.
  • the apparatus is said in the closed position when the movable contacts are glued against the fixed contacts, making it possible to connect the upstream current 75 and downstream lines 59, and in the open or triggered position when the contacts are separated.
  • the polar cutoff assembly 80 also comprises a pusher 78 capable of actuating the movable bridge 83 in the opening direction and a non-schematized contact pressure spring responsible for actuating the movable bridge 83 in the closing direction.
  • a pusher 78 capable of actuating the movable bridge 83 in the opening direction
  • a non-schematized contact pressure spring responsible for actuating the movable bridge 83 in the closing direction.
  • Other devices for moving the movable bridge 83 are obviously conceivable.
  • the polar cutoff assembly 80 comprises a first 81 and a second 82 arc extinguishing blades block whose purpose is to channel outward and to facilitate the extinction of electric arcs occurring during the opening between the movable contacts 84, 85 respectively, and the corresponding fixed contacts 76, 56 respectively.
  • each polar cutoff assembly 80 is previously assembled for reasons of convenience of mounting the various parts that constitute it before being installed in a switchgear housing of the switchgear 10. It is therefore necessary that this breakout box on the one hand has an opening sufficient to allow easy introduction of the cutoff assembly or 80 and on the other hand is able to ensure good resistance to overpressure of the gas, once the switch device assembled.
  • the switching unit of the switch device 10 comprises two distinct elements 20,30.
  • the first element 20 of the clipping housing has two substantially parallel side walls 24, 25, between a rear wall 23 and a front wall 22, and a bottom 21 connecting the vertical walls 22, 23, 24, 25.
  • the first element 20 thus forms a first approximately parallelepipedal vessel, open on the the side which is opposite the bottom 21.
  • the cavity 29 of the first tank is able to fully or partially accommodate the first fin block 81 or cut polar assemblies 80.
  • the bottom 21 of the first element 20 forms a first horizontal face of the housing of the switch device 10, for example an upper face.
  • the second element 30 of the cutoff housing has two substantially parallel side walls 34, 35, between a rear wall 33 and a front wall 32, and a bottom 31 connecting the vertical walls 32, 33, 34, 35.
  • the second element 30 thus forms a second approximately parallelepipedic tank, open on the side which is opposite the bottom 31.
  • the cavity 39 of the second tank is able to fully or partially accommodate the second fin block 82 or polar cleavage assemblies 80.
  • the bottom 31 of the second element 30 forms a second horizontal face of the housing of the switch device 10, for example a lower face, opposite to the upper face 21.
  • the two elements 20 and 30 are therefore designed as two rigid half-housings so that, during the assembly of the device 10, they fit together to form a closed cut-off box creating cut-off chambers in cavities 29,39. Due to the open tank shape on one side, it is very easy to introduce the polar cut-off unit (s) 80 into each half-housing 20, 30 of the cut-off housing.
  • the two elements 20,30 are held together by fixing means, such as latching means 28,38, composed for example of an elastic member 28 of the element 20 whose end can snap into an opening 38 provided of the element 30.
  • fixing means such as fixing screws are also conceivable to maintain the two elements 20,30 between them.
  • each element 20,30 further comprises a partition wall 26,36 between each adjacent pole, so as to isolate the poles between them.
  • Each of the partitions 26, respectively 36 is fixed to the rear walls 23, respectively 33, and before 22, respectively 32, and the bottom 21, respectively 31, of the element 20, respectively 30.
  • These partitions 26, respectively 36 are substantially parallel to the side walls 24,25, respectively 34,35 and form a box for defining separate cavities 29, respectively 39, thus creating separate breaking chambers for each pole.
  • each element 20,30 thus comprises two partition walls 26,36.
  • each partition wall 36 further comprises an inner recess in which is inserted the corresponding partition wall 26. This creates an overlap between the partition walls 26,36.
  • This solution has the advantage of guaranteeing a good seal between the different breaking chambers 29, 39 of the poles, of respecting the lines of leakage between poles and of stiffening the junction zone between the partitions 26 and 36.
  • each element 20, 30 of the breaking box consists of a single molded part made of insulating plastic material, which simplifies the manufacture of the switch device and which also ensures a good seal between the various cavities 29, 39 of each pole and a better stiffness of the elements 20,30.
  • the internal dimensions of the two elements 20,30 are designed so that, when they are fixed against each other, they can hold in position the clipping assemblies 80 of the different poles placed inside.
  • the bottoms 21,31 of the two elements 20,30 comprise several openings 27,37 openings so as to allow the evacuation to the outside of the gases of the different chambers of cutoff 29,39, up and down of the switch device 10.
  • junction zone between the two elements 20,30 corresponding to the joint between the two assembled elements, lies in an approximately horizontal plane (see Figures 1 and 6 ), substantially parallel to the bottoms 21,31 of the breaking box.
  • the junction zone between the tank and the cover is located at the front of the breakout box in a substantially vertical plane, orthogonal to the horizontal axis of displacement X.
  • the The height of the cutoff housing is less than its depth, given the structure and arrangement of the cutoff polar assemblies 80.
  • the area occupied by the junction zone is therefore much smaller than in a conventional solution.
  • the pressure forces exerted on the junction zone between the two elements 20,30 are significantly lower which allows to obtain a better mechanical strength.
  • This arrangement also makes it possible to better stiffen the different parts of the elements 20, 30, especially at the level of the partition walls 26, 36.
  • the junction zone between the two elements 20,30 may advantageously be remote from the outer ends 81 ', 82' of the fin blocks 81, 82, to avoid having to withstand excessive overpressure. Thanks to this arrangement of the breaking unit in two separate elements 20,30, one advantageously obtains on the one hand an easy introduction of pre-assembled polar cutoff assemblies, on the other hand a better holding of the poles breaking chambers overpressures gases.
  • the side walls 24,25 and 34,35 of the elements 20 and 30 form side faces of the housing of the switch device 10.
  • the switch box then constitutes a base of the switch device 10 on which it can be in particular fixed a trigger system.
  • the switch box then constitutes a base of the switch device 10 on which it can be in particular fixed a trigger system.
  • the rear walls 23, 23 of the cut-off housing it is possible to have means making it possible to hang the switch device 10 on any mounting support such as a DIN rail or the like .
  • these attachment means are arranged on the rear wall 23 of the element 20.
  • the switch device 10 comprises a trigger system consisting of one or more function blocks for the purpose of providing control and / or protection of the downstream electrical circuit.
  • the triggering system comprises an electromechanical magneto / thermal cut-off block 50 for each pole and a mechanical lock block 40.
  • the use of other function blocks such as a block of magnetic and / or thermal cutoff with electronic detection.
  • the mechanical lock block 40 is provided with a lock 41 which acts on each push rod 78, in the opening direction, for example by means of a non-schematized lifter for reasons of simplification.
  • an electromechanical magneto / thermal cutoff unit 50 is traversed by the power current flowing in the corresponding pole and may comprise in series a thermal trip device 51, such as a bimetallic strip actuated by a heater, and a magnetic trigger 52, composed of a magnetic coil and a striker, which acts on the movable bridge 83 of the pole in the opening direction, for example via a percussion rod passing through the pusher 78, not schematized for reasons of simplification.
  • the switch apparatus 10 For each pole, the switch apparatus 10 comprises, in a current manner, an upstream fixed conductor 75 forming the polar line of upstream current and one end of which has substantially a U-shaped materialized by two branches 73 and 74 (see FIG. figure 4 ).
  • a branch 74 of the U carries the upstream fixed contact 76 which cooperates with the movable contact 84.
  • the upstream conductor 75 is introduced into the switch apparatus 10 by inserting the front wall 22 of the first element 20 of the breaking housing in the interior space between the two branches 73,74 of the U.
  • the spacing of the branches 73,74 may be designed so that, once inserted, the upstream conductor 75 is maintained by jamming the branches 73,74 around the front wall 22.
  • the switch device 10 also comprises for each pole a downstream fixed conductor 55 whose end has substantially a U-shaped materialized by two branches 53 and 54 (see figure 3 ).
  • a branch 54 of the U carries the downstream fixed contact 56 which cooperates with the movable contact 85.
  • the downstream conductor 55 is connected in series with the thermal trip unit 51, with the magnetic trip unit 52 and then with the downstream pole line 59. The downstream conductor 55 is thus fixed to the magneto / thermal cut-off block 50 of the pole.
  • the front wall 32 of the second element 30 of the breaking box is introduced into the interior space between the two branches 53,54 of the U of each downstream conductor 55, thus ensuring the maintenance and locking of the system of triggering at the same time as the closing of the breaking box.
  • the spacing of the branches 53,54 may be designed so that the downstream conductor 55 is held by wedging the branches 53,54 around the front wall 32.
  • Fixing the second element 30 against the first element 20 is preferably performed by the latching means 28,38 or by other means such as screws.
  • This step C thus advantageously makes it possible, in a single operation, both to completely lock the triggering system, thanks to the front wall 32, and to close the breaking box, by fixing the second element 30 on the first element 20. This provides a simple, fast and efficient method of assembling the switch device.
  • An additional fixing step then makes it possible to position a front face block 60 comprising control and / or display members of the switch device 10, at the front of the trigger system 40, 50, to finally obtain the apparatus 10. assembled as shown in Figures 1 and 6 .
  • each module of the switch device 10 can be designed and assembled separately with each other (polar cut assembly, lock block, magneto block / thermal, front panel block, etc ...), which facilitates not only the replacement of one module by another during maintenance but also facilitates the design from a single base of electrical devices switches with different functions or the design of a wide range of switchgear using certain common modules.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP04100060.5A 2003-01-20 2004-01-09 Boîtier de coupure d'un appareil électrique interrupteur Expired - Lifetime EP1439557B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0300626A FR2850203B1 (fr) 2003-01-20 2003-01-20 Boitier de coupure d'un appareil electrique interrupteur
FR0300626 2003-01-20

Publications (2)

Publication Number Publication Date
EP1439557A1 EP1439557A1 (fr) 2004-07-21
EP1439557B1 true EP1439557B1 (fr) 2013-07-10

Family

ID=32524986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04100060.5A Expired - Lifetime EP1439557B1 (fr) 2003-01-20 2004-01-09 Boîtier de coupure d'un appareil électrique interrupteur

Country Status (7)

Country Link
US (1) US7098763B2 (zh)
EP (1) EP1439557B1 (zh)
JP (1) JP4307273B2 (zh)
CN (1) CN100334667C (zh)
ES (1) ES2424127T3 (zh)
FR (1) FR2850203B1 (zh)
RU (1) RU2320046C2 (zh)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2931583A1 (fr) * 2008-05-22 2009-11-27 Schneider Electric Ind Sas Dispositif de contact pour contacteur de forte puissance resistive
KR200446459Y1 (ko) * 2009-05-04 2009-10-30 주식회사 비츠로테크 전원 절환 개폐기
DE102010005345B4 (de) 2010-01-21 2022-04-21 Abb Schweiz Ag Elektrisches Schaltgerät in modularer Bauweise
ITBG20120039U1 (it) * 2012-11-06 2014-05-07 Abb Spa Dispositivo di commutazione elettrica per circuiti di bassa tensione
CA2915098C (en) 2013-07-17 2019-12-31 Schneider Electric USA, Inc. Internal arc management and ventilation for electrical equipment
JP6365684B2 (ja) 2014-12-05 2018-08-01 オムロン株式会社 電磁継電器
JP6414453B2 (ja) 2014-12-05 2018-10-31 オムロン株式会社 電磁継電器
JP2016110843A (ja) 2014-12-05 2016-06-20 オムロン株式会社 電磁継電器
US10134551B2 (en) * 2016-09-21 2018-11-20 Astronics Advanced Electronic Systems Corp. Galvanically isolated hybrid contactor
CN106409566A (zh) * 2016-12-02 2017-02-15 雷顿电气科技有限公司 控制与保护开关的灭弧装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516304A1 (fr) * 1981-11-09 1983-05-13 Telemecanique Electrique Interrupteur a commande mecanique et ouverture automatique
FR2673486B1 (fr) * 1991-02-28 1996-03-01 Telemecanique Appareil interrupteur de courant.
DE19630471A1 (de) * 1996-07-27 1998-01-29 Kloeckner Moeller Gmbh Schaltkammergehäuse für einen Leistungsschalter und Gehäusemodule zur Herstellung eines derartigen Schaltkammergehäuses
US5933066A (en) * 1997-11-13 1999-08-03 Eaton Corporation Circuit interrupter with terminal shield and wire trough

Also Published As

Publication number Publication date
JP2004228087A (ja) 2004-08-12
CN100334667C (zh) 2007-08-29
RU2004101450A (ru) 2005-06-20
EP1439557A1 (fr) 2004-07-21
RU2320046C2 (ru) 2008-03-20
FR2850203B1 (fr) 2005-02-25
ES2424127T3 (es) 2013-09-27
FR2850203A1 (fr) 2004-07-23
US20040140188A1 (en) 2004-07-22
CN1525506A (zh) 2004-09-01
US7098763B2 (en) 2006-08-29
JP4307273B2 (ja) 2009-08-05

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