EP2455961B1 - Elektrische Schaltvorrichtung - Google Patents
Elektrische Schaltvorrichtung Download PDFInfo
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- EP2455961B1 EP2455961B1 EP20110185484 EP11185484A EP2455961B1 EP 2455961 B1 EP2455961 B1 EP 2455961B1 EP 20110185484 EP20110185484 EP 20110185484 EP 11185484 A EP11185484 A EP 11185484A EP 2455961 B1 EP2455961 B1 EP 2455961B1
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- contact
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- electrical
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- 238000001514 detection method Methods 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 19
- 239000004020 conductor Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000007935 neutral effect Effects 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001010 compromised effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Classifications
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- 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
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
- H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
- H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
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- 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
Definitions
- the present invention relates to an electric switching device equipped with protection from the occurrence of differential currents above a predetermined threshold.
- switching devices used in low-voltage electrical circuits are devices that are designed to ensure the protection of electrical circuits and the safety of the operators of the circuits themselves, by means of their opening at failure events. Consequently to the opening of the circuit breakers, the current circulating between the electrical distribution source, or electrical line, and one or more electrical loads fed by the source itself is interrupted.
- the circuit breakers comprise one or more poles, each having a moving contact which can be coupled to/decoupled from a respective stationary contact in such a manner as to close/open the circuit breaker; a first electrical terminal and a second electrical terminal are connected to the moving contact and to the stationary contact, respectively.
- the differential circuit breakers (“earth leakage circuit breakers” or “residual current circuit breakers”) comprise at least a differential protection device suitable for performing a protection function against the detection of a differential current above a predetermined threshold.
- the differential current is due to the occurrence of an earth leakage current, also known as residual current or imbalance current, which causes the imbalance between the incoming current in the circuit breaker and the outgoing current from the same circuit breaker.
- Differential circuit breakers having one or more of their poles protected against failure due to overloads and/or short circuits are known as magneto-thermal differential circuit breakers ("residual current circuit breakers with overload and overcurrent protection” or "RCBO”).
- the differential protection device causes the circuit breaker opening by using a voltage that is drawn from the line voltage of the electrical circuit in which the circuit breaker itself is installed.
- Circuit breakers employing differential protection devices designed in this way are known as “voltage dependent" ("VD").
- the voltage is applied by connecting the differential protection device to two poles of the circuit breaker, between the first electrical terminals and the moving contacts, or between the second electrical terminals and the stationary contacts.
- the differential protection device In the first connection configuration, it is necessary for an installer to connect the electrical distribution source to the second electrical terminals, whereas in the second connection configuration it is necessary for him to connect the electrical source to the first electrical terminals. In this way, in both cases when the circuit breaker opens, the differential protection device is only connected to the electrical load, and hence, the application of the voltage is automatically interrupted.
- the differential protection device In the event that an installation error occurs, when the circuit breaker opens, the differential protection device remains electrically connected to the electrical distribution source and a current continues to flow between the source and the protection device. Hence, the voltage continues to be applied to the differential protection device after its intervention, when it is no longer necessary and can damage it, because of its high level, or reduce its service life. Once the differential protection device is damaged, the operation of the circuit breaker is completely compromised since following the detection of a differential residual current above the predetermined threshold, the circuit breaker is no longer tripped in response, with serious risk for the safety of a user of the electrical circuit.
- circuit breakers that depend on the line voltage show signaling means on their front mask, for example the inscriptions "LOAD” and "LINE", to indicate to the user where to correctly connect the electrical load and the electrical distribution source. Nevertheless, this solution does not guarantee that the user will correctly install the circuit breaker.
- European patent application EP2085998 discloses a circuit breaker having a differential protection electronic circuit powered between phase and neutral lines.
- the electronic circuit is connected at side of the mobile contact of one of the phase and neutral lines, and at side of the fixed contact of the other one of the phase and neutral lines. Furthermore, an additional switch is provided between the phase line and the differential protection electronic circuit.
- the object of the present invention is to provide a circuit breaker of the line voltage dependent type allowing to overcome the disadvantage exhibited in the state of the art by adopting solutions that are particularly simple and cheap economical from the design perspective.
- an electric switching device adapted to mutually connect/disconnect an electrical distribution source and an electric load operatively connected to a circuit having a line voltage.
- the switching device comprises:
- the differential protection device is configured in such a manner as to cause interruption of application of the supply voltage to the actuation means following the decoupling of the first and second moving contacts from the respective first and second stationary contacts, regardless of whether the electrical source is connected to the first and third electrical terminals or to the second and fourth electrical terminals.
- the differential protection device comprises an auxiliary contact electrically positioned in series between the actuation means and the first pole, the auxiliary contact being operatively connected to the first moving contact in such a manner as to interrupt the series connection between the actuation means and the first pole following the decoupling of the first moving contact from the respective first stationary contact.
- the auxiliary contact comprises a first conductor element electrically connected to the actuation means and adapted to operatively interact with the first moving contact in such a manner as to be coupled to the first moving contact, when the first moving contact is coupled to the respective first stationary contact, and in such a manner as to be decoupled from the first moving contact, when the first moving contact is decoupled from the respective first stationary contact.
- the switching device according to the present invention will be described below in reference to one of its embodiments as a magneto-thermal differential circuit breaker; in particular, reference will be made to a bipolar embodiment having a phase and a neutral.
- magneto-thermal differential circuit breakers for example, having more than two poles (and any number of phases), and, more generally, for any type of voltage dependent switching device.
- a circuit breaker according to the present invention is suitable for connecting/disconnecting an electrical distribution source and an electrical load operatively associated with an electrical circuit with a line voltage and comprises a case inside which at least a first pole and a second pole are defined.
- magneto-thermal differential circuit breakers 1 of the modular type having a first pole 2, or phase 2, and a second pole 3, or neutral 3, both schematically visible in figures 3 and 4 , are described as examples.
- the first pole 2 and the second pole 3 are defined inside an overall case of circuit breaker 1 that is obtained by coupling the first half-shell 12, visible in figure 1 , with a second half-shell, not shown in figures.
- the circuit breaker 1 of the illustrated examples has a case with a front width equal to a standard DIN module (a DIN module being equal to 17.5 mm).
- first pole 2 and second pole 3 of circuit breaker 1 are protected or are not protected against failures due to an overload and/or an overcurrent; for example, in circuit breaker 1 both poles 2, 3 could be configured as phases.
- the first pole 2 comprises at least a first moving contact 4 which can be coupled to/decoupled from a respective first stationary contact 5 and at least a first electrical terminal 6 and a second electrical terminal 7 (schematically shown in figures 3 and 4 ), which are connected to the first moving contact 4 and to the first stationary contact 5, respectively.
- the second pole 3 comprises at least a second moving contact 8 which can be coupled to/decoupled from a respective second stationary contact 9 and at least a third electrical terminal 10 and a fourth electrical terminal 11 (schematically shown in figures 3 and 4 , as well as the second stationary and moving contacts 9, 8) which are connected to the second moving contact 8 and to the second stationary contact 9, respectively.
- Such first, second, third and fourth electrical terminals 6, 7, 10, 11 are suitable for electrically connecting the first pole 2 and the second pole 3 to the electrical distribution source and to the electrical load.
- a known suitable driving mechanism such as the mechanism indicated with the numerical reference 13 in figure 1 , is operatively associated with the first and second moving contacts 4, 8 in such a manner as to cause their decoupling from the respective first and second stationary contacts 5, 9 after its actuation.
- the circuit breaker 1 comprises at least a differential protection device 50 having detection means suitable for detecting a differential current due to an imbalance between the currents circulating in the first pole 2 and in the second pole 3.
- the differential protection device 50 further comprises actuation means adapted to cause the decoupling of first and second moving contacts 4, 8 from the respective first and second stationary contacts 5, 9.
- the differential protection device 50 is operatively associated with the first pole 2 and the second pole 3 of the circuit breaker 1 and is configured such that, after the detection of a differential current greater than a predetermined threshold (hereinafter indicated for simplicity sake as "current I D "), a supply voltage that depends on the line voltage present between the first pole 2 and the second pole 3 is applied to the actuation means to cause decoupling of the first and second moving contacts 4, 8 from the respective first and second stationary contacts 5,9.
- a predetermined threshold hereinafter indicated for simplicity sake as "current I D "
- the detection means comprise a detection winding 400, or secondary winding 400, wound around a magnetic core 54 that surrounds the conductive paths of the first pole 2 and the second pole 3, in which flows the current of the circuit breaker 1.
- the detection winding 400 is associated with the magnetic core 54 in such a manner as to generate an electrical signal when a differential current occurs.
- the detection means further comprise electronic means 300 (schematically shown in figures 3 and 4 ), for example a microprocessor, which are operatively associated with the detection winding 400 and configured in such a manner as to detect the electrical signal that is generated following the occurrence of the current I D and drive, following such detection, the application of a supply voltage to the actuation means.
- electronic means 300 for example a microprocessor, which are operatively associated with the detection winding 400 and configured in such a manner as to detect the electrical signal that is generated following the occurrence of the current I D and drive, following such detection, the application of a supply voltage to the actuation means.
- the electronic means 300 outputs an electrical driving signal suitable for driving the closure of at least an electronic switch 58 located electrically in series between the actuation means and the second pole 3 (see figures 3 and 4 ).
- the actuation means comprise a first coil 55 arranged along an axis 56 (represented in figure 1 ).
- the first coil 55 is operatively associated with a moving element (like, for example, the moving pin 57 in figures 1 and 2 ) in such a manner as to cause its movement from a position of rest to an actuating position after the application of the supply voltage to the ends of the coil 55 itself.
- the moving element operatively interacts with the first moving contact 4 and the second moving contact 8 in such a manner as to cause the decoupling from the respective first stationary contact 5 and second stationary contact 9.
- the moving pin 57 operates the driving mechanism 13 during its own movement along the axis 56.
- the protection function of the first pole 2 from failures due to overcurrents and/or short circuits is carried out by a second coil 59, which is also arranged along axis 56; in particular, the second coil 59 is arranged around at least one portion of the first coil 55 (see figures 1 and 2 ). Also the second coil 59 is operatively associated with the moving element 57 in such a manner as to cause its movement from the position of rest to the actuating position following the passage in the first pole 2 of an overcurrent and/or a short circuit current. Thanks to this particular design solution, the overall dimensions of the circuit breaker 1 are reduced.
- the differential protection device 50 is configured in such a manner as to cause the application interruption of the supply voltage to the actuation means following (in particular, immediately after) the decoupling of the first and second moving contacts 4, 8 from the respective first and second stationary contacts 5, 9, independently from the fact that the electrical source is connected to the first and third electrical terminals 6, 10 or to the second and fourth electrical terminals 7, 11.
- the circuit breaker 1 comprises a differential protection device 50 having an auxiliary contact electrically located in series between the actuation means and the first pole 2, and operatively connected to the first moving contact 4 in such a manner as to interrupt the series connection between the actuation means and the first pole 2 following the decoupling of the first moving contact 4 from the respective stationary contact 5.
- the auxiliary contact comprises a first conductor element, which is electrically connected to the actuation means and that it is able to operatively interact with the first moving contact 4 in such a manner as to be coupled with the first moving contact 4, when the first moving contact 4 is coupled to the respective first stationary contact 5, and in such a manner as to be decoupled from the first moving contact 4, when the first moving contact 4 is decoupled from the respective first stationary contact 5.
- the actuation means are connected to the first pole 2.
- the first conductor element could be suitable for operatively interacting with the second moving contact 8, in the same way as described for the interaction with the first moving contact 4.
- the first conductor element comprises a first spring 201 arranged around a first pin 200, which is associated with and transverse with respect to the case of circuit breaker 1.
- the first spring 201 is visible, while the corresponding first pin 200, which extends transversally from the inner wall of the second half-shell facing toward the first half-shell 12, is schematically shown dotted in figure 2 .
- the first spring 201 has a first end 203 connected to a second conductive pin 205, which extends transversally from the inner wall 14 of the first half-shell 12.
- This second conductive pin 205 is electrically connected to the first coil 55 through the connection 206 illustrated in figure 2 .
- the first end 203 could be connected to the coil 55 with any other type of electrical connection.
- the first spring 201 further comprises a second end 204, which extends toward the first moving contact 4 in such a manner as to be in contact with it only when the first moving contact 4 is coupled with the respective first stationary contact 5.
- the first moving contact 4 exhibits a central body 15, which is pivoted in a rotating manner on a pin 16 that is associated with the first half-shell 12 and transverse with respect to the inner wall 14.
- a first terminal 61 of the first coil 55 (schematically illustrated in figure 3 ) is electrically connected to the first moving contact 4 through the second conductive pin 205 and the first spring 201.
- the detection means of the differential protection device 50 drive the closure of the switch 58 in order to realize the connection between a second terminal 62 of the first coil 55 and the second pole 3. In this way, the supply voltage necessary to move the moving pin 57 and operate the driving mechanism 13 is applied to coil 55.
- the first moving contact 4 turns counterclockwise around the pin 16 with reference to figures 1 and 2 , decoupling itself from the respective first stationary contact 5, and decoupling its tooth 17 from the second end 204 of the first spring 201.
- the electrical connection between the first coil 55 and the first pole 2 is interrupted, and current no longer flows in the first coil 55 independently of the fact that the electrical source is connected to first and third electrical terminals 6, 10 or to second and fourth electrical terminals 7, 11.
- the circuit breaker 1 comprises a differential protection device 50 configured in such a manner as to realize an electrical connection between the first coil 55 and the first and second poles 2, 3 upon the detection of the current I D .
- This electrical connection has a first electrical connection 65 situated between the first electrical terminal 6 and the first moving contact 4, and a second electrical connection 66 situated between the second stationary contact 9 and the fourth electrical terminal 11.
- the electrical connection could have a first connection located between the second electrical terminal 7 and the first stationary contact 5, and a second electrical connection located between the third electrical terminal 10 and the second moving contact 8.
- the differential protection device 50 is therefore configured in such a manner as to automatically interrupt the supply voltage application to the first coil 55 without the aid of auxiliary contacts such as, for example, the auxiliary contact realized by the first spring 201 described for the circuit breaker 1 shown in figures 1-3 .
- a circuit breaker 1 may comprise a test mechanism 100 which has the task of verifying that the differential protection device 50 is working correctly.
- a test winding 53 is wound around the magnetic core 54 and has a first electrical terminal 67 and a second electrical terminal 68 (see figures 3 and 4 ).
- the test mechanism 100 is configured in such a manner as to apply, upon its operation, a test voltage between the first terminal 67 and the second terminal 68 of the test winding 53.
- the applied test voltage is suitable for simulating the occurrence of the current I D , generating a magnetic flux in the core 54.
- an electric signal is generated in the detection winding 400 of the detection means, having a value indicating the presence of the current I D .
- the test voltage is drawn from the line voltage present between the first pole 2 and the second pole 3 through the realization of a suitable electrical connection between the test winding 53 and the poles 2, 3.
- This connection can comprise at least one resistor 103 (see figures 3 and 4 ) suitable for setting the value of the current flowing in the test winding 53.
- the first terminal 67 of the test winding 53 is electrically connected to a third conductive pin 207 associated with the first half-shell 12 and transverse with respect to the inner wall 14.
- the second terminal 68 of the test winding 53 is electrically connected to the second pole 3.
- the test mechanism 100 of the circuit breaker 1 comprises a moving element 101, or push button 101, which can be operated by applying force, which extends from outside the case of the circuit breaker 1 to be actuated by an external operation.
- the push button 101 is suitable for operatively interacting, after being actuated, with a second conductor element electrically connected to the second conductive pin 205.
- the push button 101 operatively interacts with the second conductor element in such a manner as to push at least a portion of the second conductor element against the third conductive pin 207.
- the second conductor element comprises a second spring 208 (visible in figure 2 ) arranged around the second conductive pin 205 and having one end 209 which extends between the third conductive pin 207 and the push button 101, in such a manner as to operatively interact with the push button 101 during its actuation.
- the end 102 of the push button 101 is shaped in such a manner as to couple with a portion of the end 209.
- the described solutions are particularly simple and cheap to realize from a design perspective.
- the solution illustrated in figures 1-3 provides substantially only the use of the first spring 201 mounted on a pin, in order to interrupt the voltage supply application to the actuation means.
- the solution illustrated in figure 3 provides only the realization of an electrical connection having suitable electrical connections 65, 66 between the actuation means and the first and second poles 2, 3.
- circuit breakers designed in this way are susceptible to numerous modifications and variants, all of which are in the scope of the present invention. In particular, all details can be replaced by other equivalent technical elements.
- the pins that, in the description, are associated with a particular half-shell of the circuit breaker 1, could be all or in part associated with the other half-shell.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Relay Circuits (AREA)
- Electronic Switches (AREA)
Claims (11)
- Elektrische Schaltvorrichtung (1), die dazu ausgelegt ist, eine Stromversorgungsquelle und einen elektrischen Verbraucher, der mit einem eine Netzspannung aufweisenden Stromkreis funktional verbunden ist, miteinander zu verbinden / voneinander zu trennen, wobei die Schaltvorrichtung (1) umfasst:- einen ersten Pol (2) mit mindestens einem ersten beweglichen Kontakt (4), der mit einem entsprechenden ersten ortsfesten Kontakt (5) und mindestens einem ersten elektrischen Anschluss (6) und einen zweiten elektrischen Anschluss (7), die jeweils mit dem ersten beweglichen Kontakt (4) und dem ersten ortsfesten Kontakt (5) verbunden sind, ankoppelbar/davon abkoppelbar ist;- einen zweiten Pol (3) mit mindestens einem zweiten beweglichen Kontakt (8), der mit einem entsprechenden zweiten ortsfesten Kontakt (9) und mindestens einem dritten elektrischen Anschluss (10) und einem vierten elektrischen Anschluss (11), die jeweils mit dem zweiten beweglichen Kontakt (8) und dem zweiten ortsfesten Kontakt (9) verbunden sind, ankoppelbar/davon abkoppelbar ist, wobei der erste, zweite, dritte und vierte elektrische Anschluss (6, 7, 10, 11) dazu ausgelegt ist, den ersten Pol (2) und den zweiten Pol (3) mit der Stromquelle und dem elektrischen Verbraucher elektrisch zu verbinden;- eine Differentialschutzvorrichtung (50) umfassend eine Erfassungseinrichtung, die dazu ausgelegt ist, einen Differentialstrom zu erfassen, und eine Betätigungseinrichtung, die dazu ausgelegt ist, die Abkoppelung des ersten und zweiten beweglichen Kontakts (4, 8) von dem entsprechenden ersten und zweiten ortsfesten Kontakt (5, 9) zu bewirken, wobei die Differentialschutzvorrichtung (50) mit dem ersten und zweiten Pol (2, 3) funktional verbunden und derart ausgestaltet ist, dass nach der Erfassung eines Differentialstroms oberhalb eines vorbestimmten Schwellwertes eine Versorgungsspannung, die von der zwischen dem ersten Pol (2) und dem zweiten Pol (3) vorhandenen Netzspannung abhängt, an die Betätigungseinrichtung angelegt wird, um die Abkoppelung des ersten und zweiten beweglichen Kontakts (4, 8) von dem entsprechenden ersten und zweiten ortsfesten Kontakt (5, 9) zu bewirken;
wobei die Differentialschutzvorrichtung (50) derart ausgestaltet ist, dass sie nach der Abkoppelung des ersten und zweiten beweglichen Kontakts (4, 8) von dem entsprechenden ersten und zweiten ortsfesten Kontakt (5, 9) eine Unterbrechung der Anlegung der Versorgungsspannung an die Betätigungseinrichtung bewirkt, ungeachtet dessen, ob die Stromquelle mit dem ersten und dritten elektrischen Anschluss (6, 10) oder mit dem zweiten und vierten elektrischen Anschluss (7, 11) verbunden ist, und wobei die Differentialschutzvorrichtung (50) einen Hilfskontakt umfasst, der zwischen der Betätigungseinrichtung und dem ersten Pol (2) elektrisch in Reihe angeordnet ist, wobei der Hilfskontakt mit dem ersten beweglichen Kontakt (4) funktional verbunden ist, derart dass er die Reihenschaltung zwischen der Betätigungseinrichtung und dem ersten Pol (2) nach der Abkoppelung des ersten beweglichen Kontakts (4) von dem entsprechenden ersten ortsfesten Kontakt (5) unterbricht, dadurch gekennzeichnet, dass der Hilfskontakt ein erstes Leiterelement umfasst, das mit der Betätigungseinrichtung elektrisch verbunden und dazu ausgelegt ist, mit dem ersten beweglichen Kontakt (4) funktional zusammenzuwirken, derart dass es an den ersten beweglichen Kontakt (4) gekoppelt ist, wenn der erste bewegliche Kontakt (4) an den entsprechenden ersten ortsfesten Kontakt (5) gekoppelt ist, und derart dass es von dem ersten beweglichen Kontakt (4) abgekoppelt ist, wenn der erste bewegliche Kontakt (4) von dem entsprechenden ersten ortsfesten Kontakt (5) abgekoppelt ist. - Vorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass das erste Leiterelement mindestens eine erste Feder (201) mit einem ersten Ende (203) umfasst, das mit der Betätigungseinrichtung elektrisch verbunden ist, und mit einem zweiten Ende (204), das sich derart in Richtung des ersten beweglichen Kontakts (4) erstreckt, dass es mit dem ersten beweglichen Kontakt (4) in Berührung steht, wenn der erste bewegliche Kontakt (4) an den entsprechenden ersten ortsfesten Kontakt (5) gekoppelt ist.
- Vorrichtung (1) nach Anspruch 2, dadurch gekennzeichnet, dass der erste bewegliche Kontakt (4) einen Zacken (17) umfasst, der dazu ausgelegt ist, das zweite Ende (204) der ersten Feder (201) zu berühren.
- Vorrichtung (1) nach Anspruch 2, dadurch gekennzeichnet, dass sie einen ersten Stift (200) und einen zweiten elektrisch leitenden Stift (205) umfasst, die mit dem Gehäuse der Schaltvorrichtung (1) verbunden sind und quer dazu verlaufen, wobei die erste Feder (201) um den ersten Stift (200) herum angeordnet ist und das erste Ende (203) der ersten Feder (201) mit dem zweiten elektrisch leitenden Stift (205) verbunden ist, welcher mit der Betätigungseinrichtung elektrisch verbunden ist.
- Vorrichtung (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Erfassungseinrichtung umfasst:- eine Erfassungswicklung (400), die um einen magnetischen Kern (54) herumgewickelt ist, welcher die Leiterpfade des ersten Pols (2) und des zweiten Pols (3) umgibt, wobei die Erfassungswicklung (400) mit dem magnetischen Kern (54) derart verbunden ist, dass sie ein elektrisches Signal erzeugt, wenn der Differentialstrom auftritt;- eine elektronische Einrichtung (300), die mit der Erfassungswicklung (400) funktional verbunden und derart ausgestaltet ist, dass sie das elektrische Signal erfasst, das erzeugt wird, wenn der Differentialstrom einen vorbestimmten Schwellwert überschreitet, wobei die elektronische Einrichtung (300) derart ausgestaltet ist, dass sie nach der Erfassung das Anlegen einer Versorgungsspannung an die Betätigungseinrichtung antreibt.
- Vorrichtung (1) nach Anspruch 5, dadurch gekennzeichnet, dass sie umfasst:- eine Prüfwicklung (53), die um den magnetischen Kern (54) herumgewickelt ist und einen ersten Anschluss (67) und einen zweiten Anschluss (68) aufweist;- einen Prüfmechanismus (100), der derart ausgestaltet ist, dass er nach seiner Betätigung zwischen dem ersten und zweiten Anschluss (66, 67) der Prüfwicklung (53) eine Prüfspannung anlegt.
- Vorrichtung (1) nach Anspruch 6, dadurch gekennzeichnet, dass sie umfasst:- einen dritten elektrisch leitenden Stift (207), der mit dem Gehäuse des Schalters verbunden ist und quer dazu verläuft, wobei der erste Anschluss (67) der Prüfwicklung (53) mit dem dritten elektrisch leitenden Stift (207) elektrisch verbunden ist und der zweite Anschluss (68) der Prüfwicklung (53) mit dem zweiten Pol (3) elektrisch verbunden ist;- ein zweites Leiterelement, das mit dem zweiten elektrisch leitenden Stift (205) elektrisch verbunden ist;und dadurch gekennzeichnet, dass der Prüfmechanismus (100) ein bewegliches Element (101) umfasst, das dazu ausgelegt ist, nach seiner Betätigung mit dem zweiten Leiterelement funktional zusammenzuwirken, derart dass es mindestens einen Teil des zweiten Leiterelements gegen den dritten elektrisch leitenden Stift (207) drückt.
- Vorrichtung (1) nach Anspruch 7, dadurch gekennzeichnet, dass das zweite Leiterelement mindestens eine zweite Feder (208) umfasst, die um den zweiten Stift (205) herum angeordnet ist und ein Ende (209) aufweist, das sich zwischen dem dritten elektrisch leitenden Stift (207) und dem beweglichen Element (101) erstreckt, derart dass es imstande ist, mit dem beweglichen Element (101) funktional zusammenzuwirken.
- Vorrichtung (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Betätigungseinrichtung eine erste Spule (55) umfasst, die mit einem beweglichen Element (57) funktional verbunden ist, derart, dass nach Anlegen der Versorgungsspannung an die Enden der ersten Spule (55) eine Bewegung des beweglichen Elements (57) von einer Ruhestellung in eine Betätigungsstellung bewirkt wird.
- Vorrichtung (1) nach Anspruch 9, dadurch gekennzeichnet, dass sie mindestens eine zweite Spule (59) umfasst, die mit dem ersten Pol (2) verbunden ist und um mindestens einen Teil der ersten Spule (55) herum angeordnet ist, wobei die zweite Spule (59) mit dem beweglichen Element (57) funktional verbunden ist, derart dass die Bewegung des beweglichen Elements (57) von der Ruhestellung in die Betätigungsstellung nach Auftreten in dem ersten Pol (2) eines Fehlers aufgrund eines Überstroms und/oder eines Kurzschlussstroms bewirkt wird.
- Vorrichtung (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ein Gehäuse mit einer Frontbreite aufweist, die einem Standard-DIN-Modul entspricht.
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IT000062A ITBG20100062A1 (it) | 2010-11-17 | 2010-11-17 | Dispositivo di commutazione elettrica. |
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EP2455961B1 true EP2455961B1 (de) | 2013-08-28 |
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EP (1) | EP2455961B1 (de) |
CN (1) | CN102568967B (de) |
AU (1) | AU2011239222B2 (de) |
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ES2714102T3 (es) * | 2014-05-19 | 2019-05-27 | Abb Schweiz Ag | Dispositivo de aparamenta eléctrica de limitación de alta velocidad |
FR3046289B1 (fr) * | 2015-12-29 | 2018-02-16 | Legrand France | Appareil electrique de protection au format modulaire |
CN109755078B (zh) * | 2017-11-07 | 2020-05-29 | 施耐德电气工业公司 | 低压配电装置及用于控制低压配电装置脱扣的方法 |
CN207367899U (zh) * | 2017-11-07 | 2018-05-15 | 施耐德电气工业公司 | 能够检测预定状态的低压配电装置 |
CN213752600U (zh) | 2017-12-22 | 2021-07-20 | 黑格尔电镀物品股份有限公司 | 模块化电力切换设备 |
AU2018423700B2 (en) * | 2018-05-16 | 2021-10-07 | Hager-Electro Sas | Electrical differential switching device |
AU2019447727B2 (en) * | 2019-05-29 | 2022-12-08 | Hager-Electro Sas | Electric line (L) protection device for detecting a leakage fault, a short-circuit, fault, an overcurrent fault and an arc fault |
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DE3412273A1 (de) * | 1984-04-02 | 1985-10-10 | Heinrich Kopp Gmbh & Co Kg, 8756 Kahl | Leitungsschutzschalter mit differenzstromausloesung |
GB2295275B (en) * | 1994-11-15 | 1998-08-12 | Matsushita Electric Works Ltd | Circuit breaker |
DE10211902A1 (de) * | 2002-03-18 | 2003-10-02 | Eti Elektroelement Dd | Leitungsschutzschalter mit Fehlerstromabschaltung |
US6952150B2 (en) * | 2002-10-02 | 2005-10-04 | Pass & Seymour, Inc. | Protective device with end of life indicator |
FR2920911B1 (fr) * | 2007-09-11 | 2010-02-19 | Schneider Electric Ind Sas | Dispositif electrique a protection differentielle |
FR2927195A1 (fr) * | 2008-02-04 | 2009-08-07 | Hager Electro S A S Soc Par Ac | Appareil electrique de coupure a connexion haute et basse |
ITMI20080330U1 (it) * | 2008-10-10 | 2010-04-11 | Abb Spa | Interruttore automatico bipolare per applicazioni di bassa tensione. |
DE102008052949B4 (de) * | 2008-10-23 | 2010-10-21 | Siemens Aktiengesellschaft | Verfahren zum Schutz vor Überspannung in einem an ein Stromversorgungsnetz angeschlossenen System, Überspannungsschutzgerät und Anordnung mit einem solchen |
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CN102568967B (zh) | 2016-02-03 |
NZ595956A (en) | 2013-03-28 |
CN102568967A (zh) | 2012-07-11 |
AU2011239222B2 (en) | 2016-07-07 |
AU2011239222A1 (en) | 2012-05-31 |
EP2455961A1 (de) | 2012-05-23 |
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