EP3300532A1 - Appareil electrique de type disjoncteur - Google Patents
Appareil electrique de type disjoncteurInfo
- Publication number
- EP3300532A1 EP3300532A1 EP17720188.6A EP17720188A EP3300532A1 EP 3300532 A1 EP3300532 A1 EP 3300532A1 EP 17720188 A EP17720188 A EP 17720188A EP 3300532 A1 EP3300532 A1 EP 3300532A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- contact element
- axis
- electrical apparatus
- carrier
- 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
Links
- 238000010586 diagram Methods 0.000 description 2
- 238000010616 electrical installation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
-
- 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
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
-
- 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
- H01H71/16—Electrothermal mechanisms with bimetal element
Definitions
- the present invention relates to a circuit breaker type electrical apparatus. Electrical devices of this type serve to protect electrical equipment against overcurrent and short circuits.
- circuit breaker-type electrical apparatus comprising a housing, a first circuit having a first contact and a second circuit being mounted in parallel with the first circuit and having a second contact and a bimetallic strip.
- Said first circuit and said second circuit are connected in series with a coil of a magnetic actuator.
- Said first contact comprises a first contact element and a second contact element and said second contact comprises a third contact element and a fourth contact element.
- Said magnetic actuator is able to open the first contact by moving the first contact element away from the second contact element when a first current is applied to the coil and is able to open the second contact by moving the third contact element away from the fourth element. contact when a second current is applied to the coil, the value of the second current being greater than the value of the first current.
- Such an electrical apparatus is, for example, known from WO 2012/140145 A1.
- This type of electrical device allows, thanks to the first circuit and the second circuit connected in parallel to reduce its overall impedance.
- the magnetic actuator opens the first contact by moving the first contact element away from the second contact element. After a delay of about 0.5 to 1.5 ms, the short-circuit current passes through the second circuit and the short-circuit current is applied to the coil, the value of the short-circuit current being greater than the value of the second current. Then, the magnetic actuator opens the second contact by moving the third contact element away from the fourth contact element.
- the first contact element, as well as the second contact element, are each pivotally mounted relative to the housing and are each provided with a spring to which they are respectively connected. Each of these springs applies a force to the contact element to which they are connected.
- the first and third contact elements are respectively held against the second contact element and the third contact element.
- a third spring is connected to the mechanical lock and applies a force to the mechanical lock for opening the first contact and the second contact. The first spring therefore acts in a direction opposite to the direction in which the third spring acts. This makes the circuit breaker mechanism unstable and susceptible to malfunction.
- the purpose of the electrical apparatus according to the invention is to overcome these drawbacks and to provide an electrical appliance having a stable and reliable mechanism, while ensuring satisfactory breaking performance.
- the electrical apparatus is an electrical apparatus of the circuit-breaker or contactor type comprising a housing, a first circuit comprising a first contact and a second circuit mounted in parallel with the first circuit and comprising a second contact and a bimetal. Said first circuit and said second circuit are connected in series with a coil of a magnetic actuator. Said first contact comprises a first contact element and a second contact element. Said second contact comprises a third contact element and a fourth contact element. Said magnetic actuator is able to open the first contact by moving the first contact element away from the second contact element when a first current is applied to the coil and is able to open the second contact by moving the third contact element away from the fourth element of the second element.
- the electrical apparatus is characterized in that it comprises a contact carrier comprising a first mechanical connection mechanically connecting the first contact element to the contact carrier, a second mechanical connection mechanically connecting the third contact element to the door -contact and a third mechanical connection mechanically connecting the contact carrier to the housing, the contact holder allowing the relative movement of the first contact element and the third contact element relative to the housing.
- the electrical apparatus according to the invention has the advantage of having satisfactory breaking performance and of having a stable and reliable mechanism.
- the magnetic actuator may be a double-stage actuator and comprise at least two stages, that is to say a first stage and a second stage.
- the first stage of said magnetic actuator can be adapted to open the first contact by moving the first contact element away from the second contact element when the first current is applied to the coil and / or the second stage of said magnetic actuator can be adapted to open the second contact by removing the third contact element of the fourth contact element when the second current is applied to the coil.
- the first contact element comprises a first spring and the third contact element comprises a second spring
- said first spring comprising a first end connected to the first contact element and a second end connected to the contact carrier
- said second spring comprising a first end connected to the third contact element and a second end connected to the contact carrier.
- the forces applied by the first spring and the second spring, respectively to the first contact element and the third contact element are independent of the orientation (angular position) of the contact carrier relative to the housing.
- the force applied by the first spring and the second spring can be precisely pre-established, which has the effect of improving the breaking performance.
- the first mechanical link and / or the second mechanical link and / or the third mechanical link is (are) a mechanical link (s) with a degree of freedom.
- the first mechanical connection allows a rotation of the first contact element relative to the contact-carrier around a first axis and / or the second mechanical connection allows a rotation of the third contact element relative to the contact carrier around a second axis and / or the third mechanical connection allows rotation of the contact carrier relative to the housing around a third axis.
- first axis, the second axis and the third axis are substantially parallel.
- the first axis and the second axis are substantially collinear.
- the first mechanical connection allows a translation of the first contact element with respect to the contact-carrier along a fourth axis and / or the second mechanical connection.
- allows a translation of the third contact element relative to the contact carrier along a fifth axis and / or the third mechanical connection allows a translation of the contact carrier relative to the housing along a sixth axis.
- the first axis, the second axis and the third axis are substantially parallel.
- the first contact element has a symmetrical shape with respect to a first plane of symmetry and / or the third contact element has a symmetrical shape with respect to a second plane of symmetry.
- the first axis is perpendicular to the first plane of symmetry and / or the second axis is perpendicular to the second plane of symmetry.
- the first plane of symmetry is parallel to the second plane of symmetry.
- the first plane of symmetry and the second plane of symmetry are coplanar.
- the first contact element is able to perform a first rotation about the first axis to be brought into contact with the second contact element and the third contact element is able to perform a second rotation around the second axis to be brought into contact with the fourth contact element, the direction of the first rotation being the same as that of the second rotation.
- the first current has an intensity greater than 1.13 times a nominal current of the electrical apparatus, preferably between 1.13 and 2.55 times the nominal current of the electrical apparatus, more preferably around 1.45 the nominal current of the electrical apparatus and / or the second current has an intensity between 2.55 and 20 times the rated current of the electrical apparatus, preferably between 4 and 12 times the rated current of the electrical apparatus.
- the nominal current of the electrical apparatus can be between about 6 Amperes and about 125 Amperes.
- Figure 1 is an electrical diagram of the first and second circuit of the circuit breaker according to the invention, in a preferred embodiment of the first circuit and the second circuit;
- Figure 2 is a schematic view of a circuit breaker according to the invention, in a first embodiment of said circuit breaker;
- Figures 3 and 4 are sectional views of the circuit breaker according to the first embodiment, wherein the contact carrier takes a first position;
- Figures 5 and 6 are sectional views of the circuit breaker according to the first embodiment, wherein the contact carrier takes a second position;
- Figures 7 and 8 are sectional views of the circuit breaker according to the first embodiment, wherein the contact carrier takes a third position;
- Figure 9 is a sectional view of the circuit breaker according to the first embodiment, wherein the contact carrier assumes a fourth position;
- Figure 10 is a schematic view of a circuit breaker according to the invention, in a second embodiment of said circuit breaker;
- Fig. 11 is a perspective view of the first contact member and the third contact member of the circuit breaker shown in Fig. 10;
- Figure 12 is a sectional view of the circuit breaker shown in Figure 10, in which the contact carrier takes the first position;
- Figure 13 is a sectional view of the circuit breaker according to the second embodiment, wherein the contact carrier takes the second position;
- Figure 14 is a sectional view of the circuit breaker according to the second embodiment, wherein the contact carrier takes the third position;
- Figure 15 is a sectional view of the circuit breaker according to the second embodiment, wherein the contact carrier takes the fourth position;
- FIG. 1 shows a circuit diagram of the circuit breaker according to the invention.
- the circuit breaker 10 comprises a first circuit 40 comprising a first contact 41 and a second circuit 60 being connected in parallel with the first circuit 40 and comprising a second contact 61 and a bimetallic strip 64.
- the first circuit 40 and the second circuit 60 are mounted in
- the first contact 41 comprises a first contact element 42 and a second contact element 43.
- the second contact 61 comprises a third contact element 62 and a fourth contact element 63.
- the magnetic actuator 80 is able to open the first contact 41 by moving the first contact element 42 away from the second contact element 43 when a first current is applied to the coil 81.
- the magnetic actuator 80 is also able to open the second contact 61 by spacing the third contact element 62 from the fourth contact element 63 when a second current is applied to the coil 81.
- the magnetic actuator 80 may be a double-stage actuator and comprise at least two stages, that is to say a first stage and a second stage.
- the first stage of said magnetic actuator 80 can be adapted to open the first contact 41 by moving the first contact element 42 away from the second contact element 43 when the first current is applied to the coil 81 and / or the second stage said magnetic actuator 80 may be adapted to open the second contact 61 by moving the third contact element 62 away from the fourth contact element 63 when a second current is applied to the coil 81.
- the electrical apparatus 10 may further comprise a mechanical lock 12 adapted to act mechanically on the first contact element 42 and the third contact element 62 so as to be able to open and / or close the first contact 41 and / or the second contact. 61.
- the bimetallic strip 64 may be able to act mechanically on the mechanical lock 12 to cause the opening of the first contact 41 and / or the second contact 61.
- the mechanical lock 12 can also be mechanically connected to a lever 14 so as to allow the lever 14 to act on the mechanical lock 12 so that it causes the opening of the first contact 41 and / or the second contact 61.
- the electrical apparatus 10 is provided with a housing 20, in which the first circuit 40, the second circuit 60, the mechanical lock 12, the actuator are preferably arranged. 80 and / or the contact holder 100.
- the lever 14 may also be at least partially included in the housing 20.
- the contact carrier 100 comprises a first mechanical connection 101 mechanically connecting the first contact element 42 to the contact carrier 100, a second mechanical connection 102 mechanically connecting the third element contact 62 to the contact carrier 100 and a third mechanical connection 103 mechanically connecting the contact carrier 100 to the housing 20.
- the contact carrier 100 allows the relative movement of the first contact element 42 and the third contact element 62 relative to the housing 20.
- the first mechanical link 101 and / or the second mechanical link 102 and / or the third mechanical link 103 may be mechanical links with a degree of freedom.
- the first mechanical connection 101 allows a rotation of the first element contact 42 relative to the contact carrier 100 about a first axis A1.
- the second mechanical connection 102 allows a rotation of the third contact element 62 relative to the contact carrier 100 about a second axis A2.
- the arrangement of the first axis A1 and the second axis A2 is visible in FIGS. 2 to 9 and 12 to 15.
- the third mechanical connection 103 allows a rotation of the contact carrier 100 relative to the housing 20 around a third axis A3.
- the arrangement of the third axis A3 is visible in FIGS. 2 to 9 and 12 to 15.
- the first axis A1, the second axis A2 and the third axis A3 are substantially parallel.
- the first axis A1, the second axis A2 and / or the third axis A3 are also substantially collinear.
- the first contact element 42 has a symmetrical shape with respect to a first plane of symmetry.
- the third contact element 62 has a symmetrical shape with respect to a second plane of symmetry.
- the contact carrier 100 takes a first position.
- the first contact element 42 is in contact with the second contact element 43.
- the first contact element 42 may comprise a first spring 44 and the third contact element 62 comprises a second spring 65.
- the first spring 44 may comprise a first end 44a connected to the first contact element 42 and a second end 44b connected to the carrier. contact 100.
- the second spring 65 may include a first end 65a connected to the third contact element 62 and a second end 65b connected to the contact carrier 100.
- the third contact element 62 is in contact with the fourth contact element 63.
- the first spring 44 which is connected by its first end 44a to the first contact element 42 and by its second end 44b to the contact carrier 100 and the second spring 65, which is connected by its first end 65a to the third contact element 62 and by its second end 65b to the contact carrier 100, preferably act in substantially parallel directions.
- the electrical apparatus 10 may further comprise a third spring 104.
- the third spring 104 may be connected by a first end 104a to the contact carrier 100 and a second end 104b to the housing 20.
- the third spring 104 may be used for the purpose of the tilting of the contact carrier 100.
- the contact carrier 100 takes a second position in which the first contact element 42 is remote from the second contact element 43 and in which the third contact element 62 is in contact. contact with the fourth contact element 63.
- the contact carrier 100 may further comprise a tilting element 106.
- the tilting element 106 may be rotatably mounted relative to the third axis A3.
- the tilting element 106 may be mechanically connected to the contact carrier 100 and / or to the housing 20 and may allow relative movement with respect to the contact carrier 100 and / or the housing 20.
- the tilting element 106 may comprise a first projection 107 which can bear against the first contact element 42 to move it away from the second contact element 43. This position is disclosed in FIG. 5. When the first projection 107 bears against the first contact element 42 the first projection 107 acts by compressing the first spring 44.
- the third contact element 62 and the fourth contact element 63 are in contact when the contact carrier 100 takes the second position.
- the tilting element 106 which takes a third position, bears against the first contact element 42 and the third contact element 62 to move the first element of contact 42 of the second contact element 43 and the third contact element 62 of the fourth contact element 63.
- the tilting element 106 is rotated counterclockwise relative to the other elements of the contact carrier 100.
- the contact carrier 100 can take a fourth position in which the first contact element 42 is spaced apart from the second contact element 43 and in which the third contact element 62 is removed from the fourth contact member 63.
- the contact carrier 100 takes this fourth position following manipulation of the lever 14.
- the electrical apparatus 10 according to the first embodiment comprises a magnetic actuator 80 able to open the first contact 41 by moving the first contact element 42 away from the second contact element 43 when a first current is applied to the coil 81, and able to open the second contact 61 by moving the third contact element 62 away from the fourth contact element 63 when a second current is applied to the coil 81.
- the magnetic actuator 80 can comprise a first movable core 82, a second movable core 84 and an actuating rod 86.
- the first movable core 82 and the second movable core 84 can abut the actuating rod 86 to move the latter to, for example, move the contact carrier 100 from the first position to the second position, from the second position to the third position and / or from the third position to the fourth position.
- the first movable core 82 can bear against a first bearing face 86a of the actuating rod 86.
- the second movable core 84 can bear against a second bearing face 86b of the actuating rod 86.
- the first movable core 82 is movable when the first current is applied to the coil 81, to move the contact carrier 100 from the first position to the second position.
- the second movable core 84 is able to be moved when the second current is applied to the coil 81, to move the contact carrier 100 from the second position to the third position.
- the first movable core 82 is moved following an application of the first current to the coil 81, the first movable core 82 abuts against the first bearing face 86a of the actuating rod 86 to move it towards the contact carrier 100 and / or the tilting element 106.
- the first movable core 82 When the second movable core 84 is moved following an application of the first current to the coil 81, the first movable core 82 bears against the second support surface 86b of the actuating rod 86 to move the latter to the contact carrier 100 and / or the tilting element 106.
- the first movable core 82 is moved following an application of the first current to the coil 81.
- the first movable core 82 has been moved to first come into contact with the first face of the coil. 86a and then pushing the actuating rod 86 out of the magnetic actuator 80 towards the contact carrier 100 and / or the tilting element 106.
- point 87 of the actuating rod 86 can bear against the tilting element 106 and / or the contact holder 100 to tilt the tilting element 106 and / or the contact carrier 100.
- the tip 87 of the actuating rod 86 bears against the tilting element 106 and / or the contact carrier 100 to move the first contact element away
- the third contact element 62 may have the shape of a fork or a tuning fork comprising a first arm 62a, a second arm 62b extending substantially in parallel with the first arm 62a and a branch 62c can come into contact with the fourth contact element 63.
- the first contact element 42 may extend substantially in parallel with the two arms 62a, 62b and in extension of the branch 62c.
- the first contact element 42 may be arranged between the two arms 62a, 62b of the third contact element and may preferably have a ribbon shape.
- the electrical apparatus 10 may comprise a magnetic actuator 80 identical to that of the first embodiment.
- the contact carrier 100 takes the first position and that the first contact element 42 is in contact with the second contact element
- the contact carrier 100 takes the second position in which the first contact element 42 is spaced apart from the second contact element 43, while the third contact element 62 remains in contact with the fourth contact element 63.
- a projection 107 of the tilting element 106 bears against the first contact element 42 and separates it from the second contact element 43.
- the projection 107 extends through the space between the first arm 62a and the second arm 62b.
- the tilting element 106 is provided with a bearing section 108 each able to bear against one of the arms 62a, 62b of the third contact element 62 to reject the third contact element 62 of the fourth contact element 63.
- first spring 44 and the second spring 65 act respectively on the first contact element 42 and the third contact element 62 so as to bear the first contact element 42 against the second contact element. 43 and the third contact element 62 against the fourth contact element 63.
- first spring 44 and the second spring 65 may act in substantially parallel directions, or in the same direction when the first spring 44 and the second spring 65 are arranged on the same side with respect to the first and second axes A1, A2, or in the opposite direction when they are on either side of the first axis Al and the second axis A2, as it is, for example, example, the case for the second embodiment of the invention.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Breakers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1652943A FR3049760B1 (fr) | 2016-04-04 | 2016-04-04 | Appareil electrique de type disjoncteur |
PCT/FR2017/050730 WO2017174901A1 (fr) | 2016-04-04 | 2017-03-30 | Appareil electrique de type disjoncteur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3300532A1 true EP3300532A1 (fr) | 2018-04-04 |
EP3300532B1 EP3300532B1 (fr) | 2020-06-10 |
Family
ID=57113417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17720188.6A Active EP3300532B1 (fr) | 2016-04-04 | 2017-03-30 | Appareil electrique de type disjoncteur |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3300532B1 (fr) |
CN (1) | CN109074995A (fr) |
AU (1) | AU2017245795A1 (fr) |
FR (1) | FR3049760B1 (fr) |
WO (1) | WO2017174901A1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4714907A (en) * | 1985-07-31 | 1987-12-22 | Merlin Gerin | Miniature electrical circuit breaker with multiple moving contacts and thermomagnetic trip release |
SI22187A (sl) * | 2005-12-29 | 2007-06-30 | Eti Elektroelement D.D. | Elektricno avtomatsko stikalo |
EP2223321B1 (fr) * | 2007-12-24 | 2015-07-01 | Eti Elektroelement D.D. | Commutateur automatique électrique |
DE102009030158A1 (de) * | 2009-06-24 | 2010-12-30 | Smrkolj, Jozef | Elektrischer Selbstschalter mit geringen Energieverlusten und Doppelunterbrechung |
SI2330611T1 (sl) * | 2009-12-04 | 2012-08-31 | Hager Electro S A S Soc Par Actions Simplifiee | Selektivni odklopnik |
DE102011016933A1 (de) * | 2011-04-13 | 2012-10-18 | Jozef Smrkolj | Kontakteinrichtung und deren Antrieb für Schutzschaltgeräte |
-
2016
- 2016-04-04 FR FR1652943A patent/FR3049760B1/fr not_active Expired - Fee Related
-
2017
- 2017-03-30 AU AU2017245795A patent/AU2017245795A1/en not_active Abandoned
- 2017-03-30 WO PCT/FR2017/050730 patent/WO2017174901A1/fr active Application Filing
- 2017-03-30 EP EP17720188.6A patent/EP3300532B1/fr active Active
- 2017-03-30 CN CN201780022373.0A patent/CN109074995A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2017174901A1 (fr) | 2017-10-12 |
FR3049760A1 (fr) | 2017-10-06 |
EP3300532B1 (fr) | 2020-06-10 |
CN109074995A (zh) | 2018-12-21 |
AU2017245795A1 (en) | 2018-11-01 |
FR3049760B1 (fr) | 2019-08-23 |
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