EP3888113A1 - Protection device for an electric circuit, electric circuit equipped with such a device, and method for protecting such an electric circuit - Google Patents
Protection device for an electric circuit, electric circuit equipped with such a device, and method for protecting such an electric circuitInfo
- Publication number
- EP3888113A1 EP3888113A1 EP19806286.1A EP19806286A EP3888113A1 EP 3888113 A1 EP3888113 A1 EP 3888113A1 EP 19806286 A EP19806286 A EP 19806286A EP 3888113 A1 EP3888113 A1 EP 3888113A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- fuse
- electric
- cut
- component
- 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.)
- Pending
Links
Classifications
-
- 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
- H01H9/10—Adaptation for built-in fuses
- H01H9/106—Adaptation for built-in fuses fuse and switch being connected in parallel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
- H01H39/006—Opening by severing a conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/0241—Structural association of a fuse and another component or apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
-
- 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
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
Definitions
- TITLE Protection device for an electrical circuit, electrical circuit equipped with such a device and method for protecting such an electrical circuit
- the present invention relates to a protection device for an electrical circuit, as well as an electrical circuit equipped with such a protection device. Finally, the invention relates to a method of protecting such an electrical circuit.
- fuses In a known manner, a fuse is a dipole which uses the Joule effect of the electric current which crosses it to, in the event of overcurrent, melt an electric conductor which opens the electric circuit and thus prevents the electric current from circulating.
- the fuses are sized according to the intensity of the fault current that the system must protect, as well as its opening time.
- pyrotechnic circuit breakers also called “pyroelectric switch” or “pyroswitch” in English.
- the pyrotechnic circuit breaker requires a control circuit capable of providing the cut-out command.
- a control circuit can be complex and include, for example, a current sensor, a data processing unit and a microcontroller.
- the control circuit needs to be powered by an external power source.
- the protection device formed by the pyroelectric switch and its control circuit is not autonomous and generates a higher cost and bulk, in particular because of the external power source.
- the invention intends to remedy more particularly by proposing a new protection device for an electrical circuit which turns out to be autonomous, while reducing production costs.
- the invention relates to a protection device for an electrical circuit configured to transmit an electric current, the protection device comprising:
- a second driver at least one component for cutting off an electric current
- the cutting component comprising a control zone, capable of receiving a trigger signal, and a power zone for the passage of electric current
- control circuit configured to generate and transmit the trigger signal to the control zone of the pyroelectric switch
- the device further comprising a fuse connected in series between the first conductor and the breaking component so that the current flowing through the fuse passes entirely through the power zone of the breaking component when the power zone is in a state allowing the passage of current, the fuse being able to supply a supply voltage to the control circuit
- control circuit is connected between the fuse and the control zone of the breaking component.
- the fuse provides information on the presence of an electrical fault current and the supply voltage necessary for the operation of the control circuit.
- the control circuit is responsible for generating and transmitting the trigger signal to the cut-off component.
- the protection device has a low production cost and size, since it does not require an external power source for the triggering of the breaking component. The protection device thus allows the recovery of the electrical energy generated by the melting of the fuse. In addition, the protection device according to the invention induces very low power losses and improved breaking performance.
- such a protection device comprises one or more of the following characteristics, taken in any technically admissible combination:
- the breaking current of the fuse is equal to a nominal value of electric current, this nominal value of current being defined as being the maximum value of the current intended to circulate in the protection device in normal operation.
- the fuse cut-off voltage is at least four times less than or equal to the nominal value of the electric voltage applied to the terminals of the protection device.
- the device is configured to be successively in a closing configuration where the fuse is not blown, a first intermediate configuration where the fuse is blown and the supply voltage is supplied to the control circuit, a second intermediate configuration where the cut-off component is triggered, and an opening configuration where the fuse is blown.
- the device comprises at least two breaking components connected in parallel to the fuse between the first conductor and the second conductor, so that the current flowing through the fuse is entirely shared between the respective power zones of the at least two components of cut when these power zones are in a state allowing current to flow.
- the device comprises at least two breaking components connected in series between the first conductor and the second conductor, so that the current flowing through the fuse also flows in the respective power zones of the at least two breaking components when these power zones are in a state allowing current to flow.
- the control circuit includes a potentiometer capable of controlling the trigger signal transmitted to the control zone of the cut-off component.
- the device also includes a diagnostic system comprising:
- an electronic processing unit programmed to compare the current values measured by the first sensor and the second sensor and to detect a failure of the protection device as a function of the measured current values.
- the invention also relates to an electric circuit configured to be supplied by an electric current, the electric circuit being equipped with a protection device according to the invention.
- the invention relates to a method for protecting an electrical circuit according to the invention, the method comprising, at least, steps of:
- the supply voltage of the control circuit is generated by an electric arc which is installed at the terminals of the fuse.
- Figure 1 is a schematic representation of a protection device according to the invention and of an electrical circuit comprising this protection device;
- Figure 2 is a schematic representation of the protection device in Figure 1, when a fuse is blown;
- Figure 3 is a representation similar to Figure 2, when the breaking component is open;
- FIG 4 is a block diagram of a protection method according to the invention.
- Figure 5 is a representation similar to Figure 1, for a protection device and a circuit according to a second embodiment of the invention.
- FIG 6 is a schematic representation of a protection device and an electrical circuit comprising this protection device, according to a third embodiment of the invention.
- FIG 7 is a schematic representation of a protection device and an electrical circuit comprising this protection device, according to a fourth embodiment of the invention.
- FIG. 8 Figure 8 is a representation similar to Figure 1, for a protection device and a circuit according to another embodiment of the invention.
- an electric circuit 1 is represented, configured to be supplied by an electric current I and equipped with a protection device 2.
- the electric circuit 1 comprises a load 3 and is intended to be connected to a source not shown of current, direct or alternating depending on the load 3.
- the protection device 2 is able to open the electrical circuit 1 when the latter is crossed by an electrical fault current.
- any electric current I having an intensity greater than or equal to a nominal value of current l n , also called nominal current l n .
- This nominal current value l n is defined as being the maximum value of the current expected to flow in the protection device 2 in normal operation.
- the electric fault current is defined as the sum l n + ld, where ld denotes an overcurrent.
- the potential difference maximum electrical power which can be applied between the terminals of the protection device 2 by supplying the load 3, without interruption by the protection device 2, is called the nominal voltage value and denoted V n in the following.
- This nominal voltage value is also determined according to the nature of the electrical circuit. The choice of nominal current values l n and of nominal voltage value V n depends on the nature of the load 3 to be protected.
- the fault electric current L is, for example, an overload current or a short-circuit current and constitutes a risk for the load 3 of the electric circuit 1.
- the protective device 2 comprises a first conductor 4 and a second conductor 6.
- the first conductor 4 forms an input conductor of the electric current
- the second conductor 6 forms an output conductor of the electric current.
- Load 3 is connected to the output conductor.
- the conductors 4 and 6 are configured to connect the protection device 2 to the rest of the electrical circuit 1 and thus for the passage of any electrical current.
- the electrical current I which flows between the conductors 4 and 6 is less than or equal to the nominal current value l n and the voltage electrical across conductors 4 and 6 is less than or equal to the nominal voltage V n .
- the protection device 2 also comprises a fuse 10 electrically connected in series between the conductors 4 and 6, as well as a breaking component 12 of an electric current and a control circuit 14.
- the fuse 10 is connected in series between the input conductor 4 and the pyrotechnic switch 12. Note 5 an intermediate conductor connecting the fuse 10 and the breaking component 12 between them, which is therefore interposed between conductors 4 and 6.
- a fuse is a dipole whose terminals are electrically connected to each other only by a conductive element which is capable of being destroyed, generally by fusion due to the Joule effect, when an electric current which exceeds a threshold value.
- This threshold value is here called “breaking current”.
- the cut-off voltage of a fuse called “rated voltage” in English, is defined here as the value of electrical voltage at the terminals of the fuse from which the fuse cannot interrupt the flow of current when the element driver was destroyed.
- a fuse is said to be “blown” when the conductive element has been destroyed and that no electric arc can form taking into account the values of the electric voltages present in the electric circuit 1. It then forms an electrically open circuit through which no electric current can flow.
- a fuse is said to be “blowing” when the electric current passing through it has exceeded the breaking current, causing the conductive element to start to melt, but the electric voltage across its terminals is higher than the breaking voltage. of this fuse, causing the appearance of an electric arc between its terminals. The electric arc continues as long as the fuse is blowing.
- the cut-off current ho of fuse 10 is equal, in practice to 1% or 3%, to the nominal value l n .
- the cut-off voltage Vio of fuse 10 is much lower than the nominal value V n .
- “clearly” is meant that the cut-off voltage is at least four times, for example five times or ten times lower than the nominal value V n .
- the breaking component 12 is a controllable electrical device configured to interrupt the flow of electrical current in response to a control signal.
- the breaking component 12 has a first zone 16 and a second zone 18.
- the first zone 16 is called the control zone and is capable of receiving a trigger signal S.
- the second zone 18 is called the power zone.
- the power zone 18 is the part of the breaking component 12 electrically connected in parallel to the first fuse 8. It is configured for the passage of the electric current I which supplies the electric circuit 1.
- the fuse 10 is connected in series between the first conductor 4 and the breaking component 12 so that the current I flowing through the fuse 10 passes entirely through the power zone 18 of the breaking component 12 when the power zone 18 is in a state allowing the passage of current.
- the breaking component 12 is a pyrotechnic switch 12.
- breaking component 12 can be produced differently and the description given below can be transposed to the more general case of any switch.
- the breaking component 12 is a switch such as a circuit breaker or a contactor.
- the power zone 18 corresponds to a cut-off zone with separable contacts
- the control zone 16 corresponds to a tripping mechanism capable of being controlled by an electric voltage to open the contacts of the power zone 18.
- the control zone 16 of the pyroelectric switch 12 includes a resistor 20 capable of heating when it is crossed by an electric current.
- the pyroelectric switch also includes an explosive agent, not shown, for example an explosive powder, and a cut-off element, such as a piston or a guillotine.
- the breaking element which is not shown, is made of electrically insulating material, for example plastic. It is capable of cutting the power zone 18.
- the resistor 20 of the control zone 16 is crossed by an electric current, the resistor 20 heats up and triggers the detonation of the explosive agent which causes the element to tip over. breaking from a first position where it is distant from the power zone 18 to a second position where it cuts the power zone 18 so as to interrupt the passage of electric current in the electric circuit 1.
- the control circuit 14 is configured to generate and transmit the trigger signal S to the control zone 16 of the pyroelectric switch 12.
- the control circuit 14 is connected between the fuse 10 and the control zone 16.
- the tripping signal S produced by the control circuit 14 is an electric tripping current l s which is transmitted to the control zone 16.
- the tripping current l s passes through the resistor 20 and triggers the pyroelectric switch 12.
- control circuit 14 may comprise one or more active and / or passive electrical components for the generation and transmission of the trigger signal S.
- the control circuit 14 does not include an internal power source .
- control circuit According to a variant which is not shown in the figures, the control circuit
- the potentiometer 14 includes a potentiometer capable of controlling the trip current l s transmitted to the pyroelectric switch 12.
- the potentiometer is configured to modulate the intensity of the electric current l s which is supplied to the control zone 16 of the pyroelectric switch 12.
- the potentiometer of the control circuit 14 is configured to control the opening speed of the pyroelectric switch 12.
- the protection device 2 is configured to be in different configurations C1, C2, and C3, namely a closing configuration C1, a first intermediate configuration C2 and an opening configuration C3.
- the electric current I which supplies the electric circuit 1 is less than the nominal current l n and therefore the fuse 10 is not blown.
- the electric current I which feeds the electric circuit 1 is greater than the threshold value l n .
- the fuse 10 then begins to blow, and the electric arc A appears between its terminals.
- This electric arc A causes the appearance of an electric supply voltage V, which is then supplied to the control circuit 14.
- the cut-off voltage Vio of the fuse 10 is chosen so that the electric arc A remains present between its terminals while it is melting, as long as the current I flows.
- the pyroelectric switch 12 is triggered.
- the control circuit 14, supplied by the voltage V, builds on this voltage V and transmits the trigger signal S, in the form of the current l s , to the electrical resistance 20 of the control zone 16, by triggering l pyroelectric switch 12 which quickly opens the power zone 18.
- the control circuit 14 is represented as a “box” connected between the fuse 10 and the control zone 16.
- the control circuit 14 is represented by an electrical resistance 140, for the reasons developed below.
- the electrical resistance 140 is subjected to the supply voltage V generated at the terminals of the fuse 10.
- the value of the resistance 20 is less than ten times or a hundred times the value of the resistance 140. It is therefore the value of the resistor 140 which sizes the value of the current l s transmitted to the control zone 16.
- this can be represented electrically by a simple resistor 140 in an electrical diagram, as in FIGS. 2 and 3.
- the electrical resistance 140 is electrically connected in series with the electrical resistance 20.
- the assembly formed by the resistance 20 and the resistance 140 is connected electrically in parallel with the fuse.
- a method of protecting the electrical circuit 1, equipped with the protective device 2 is implemented when an electrical current I greater than the nominal current l n occurs in the electrical circuit 1 and passes through the protective device 2. In this case, the overcurrent l d is strictly greater than zero.
- the protection device 2 is in the closing configuration C1, since the electric current I supplies the electric circuit 1 and the fuse 10 is not blown. The protection process is described below.
- a fault occurs in the supply of the electric circuit 1 and the electric current flows through the protection device 2. Because of the electric current, and in an interval of time predetermined by the rating of the fuse 10, the fuse 10 begins to melt and the electric arc A is installed at the terminals of the fuse 10. As mentioned above, the fuse 10 is dimensioned so that the electric arc A remains present between its terminals while it is melting, as long as the current I is present, which generates the supply voltage V and ensures the passage of the current. This voltage V is used to power the control circuit 14.
- the protection device 2 is in its first intermediate configuration C2 where the fuse 10 is blowing and the voltage of power supply V is supplied to the control circuit 14.
- the control circuit 14 is a passive circuit, the supply voltage V supplied by the fuse 10 represents the only power source for the control circuit 14 necessary for the operation thereof.
- the method comprises the melting of the fuse 10 caused by the electric current I greater than l n and the supply of the control circuit 14.
- the electric current of fault flows entirely through the power zone 18, since no other element is here connected in series with the fuse 10 in parallel with the power zone 18, as explained above.
- the method then comprises a step b) in which the control circuit 14 generates the trigger signal S, which corresponds to the electrical trigger current l s . Then, the control circuit 14 transmits this tripping current l s to the pyroelectric switch 12, in particular to the control zone 16 of the pyroelectric switch 12. Since the electric arc A is always present at the terminals of the fuse 10 , the electric fault current still crosses the power zone 18 of the pyroelectric switch 12.
- the method comprises the transmission, using the control circuit 14, of the trigger signal S to the pyroelectric switch 12.
- the method comprises a step c) which comprises the triggering of the pyroelectric switch 12 and the cutting off of the power zone 18 of the pyroelectric switch 12.
- the electric current l s passes through the electrical resistance 20 of the control zone 16 which heats up and triggers the detonation of the explosive agent of the pyroelectric switch 12.
- the detonation of the explosive agent causes the cut-off element to switch from its first position to its second position so as to cut the power zone 18 of the pyroelectric switch 12.
- the protection device 2 is in its opening configuration C3 where the pyroelectric switch 12 is triggered , the power zone 18 is open.
- FIG. 5 shows a second embodiment of the invention.
- the elements of the protection device 2 of this embodiment which are similar to those of the first mode bear the same references and are not described in detail insofar as the above description can be transposed to them.
- the protection device 2 comprises two breaking components 12A and 12B.
- the two breaking components 12A and 12B are connected in parallel between the input conductor 4 and the output conductor 6 so that the current I flowing through the fuse 10 is fully shared between the respective power zones 18 of the at at least two breaking components 12A, 12B when these power zones 18 are in a state allowing the passage of current.
- no other element is here connected in series with the fuse 10 in parallel with the power zones 18, so that the current I cannot flow elsewhere than through the power zones 18 respective of the at least two breaking components 12A and 12B.
- the breaking components 12A and 12B are here pyroelectric switches 12A and 12B.
- each pyroelectric switch 12A and 12B has an electrical resistance 20A and 20B.
- the electric resistors 20A and 20B are in parallel and are thus crossed by a part of the electric tripping current l s which causes the heating of these resistors 20A and 20B, as explained above.
- the protection device 2 comprises three or more of three breaking components connected in parallel, so that the current I flowing through the fuse 10 is entirely shared between the zones of respective power 18 of said breaking components 12A, 12B when these power zones 18 are in a state authorizing the passage of current.
- each pyroelectric switch 12A and 12B is configured to cut off an electric fault current having an intensity of 200 amps.
- the protection device 2 is able to cut off an electric current I having a total intensity of 400 amps.
- FIG 8 shows another embodiment of the invention.
- the elements of the protection device 2 of this embodiment which are similar to those of the embodiments described above bear the same references and are not described in detail insofar as the above description can be transposed to them.
- the protection device 2 comprises two breaking components 12A and 12B.
- the two breaking components 12A and 12B are connected in series between the input conductor 4 and the output conductor 6 so that the current I flowing through the fuse 10 also flows in the respective power zones 18 of at least two breaking components 12A, 12B when these power zones 18 are in a state allowing the passage of current.
- no other element is here connected in series with the fuse 10 in parallel with the power zones 18, so that the current I cannot flow elsewhere than through the power zones 18 respective of the at least two breaking components 12A and 12B.
- the breaking components 12A and 12B are here pyroelectric switches 12A and 12B.
- each pyroelectric switch 12A and 12B has an electrical resistance 20A and 20B.
- the electric resistors 20A and 20B are in parallel and are thus crossed by a part of the electric tripping current l s which causes the heating of these resistors 20A and 20B, as explained above.
- the protection device 2 comprises three or more of three breaking components connected in series, so that the current I flowing through the fuse 10 also flows in the power zones 18 respectively of said breaking components 12A, 12B when these power zones 18 are in a state allowing the passage of current.
- the introduction of several pyroelectric switches connected in series allows the protection device 2 to cut off an electrical voltage U having a very high voltage.
- each pyroelectric switch 12A and 12B is configured to cut an electrical voltage U n having a voltage of 500 volts.
- the protection device 2 is able to cut off an electrical voltage U having a total voltage of 1000 volts.
- the load 3 is electrically connected to the first conductor 4. The electric current 1 then flows from the second conductor 6 to the first conductor 4 in normal operating conditions.
- FIGS 6 and 7 illustrate two other embodiments of the invention.
- the elements of the protection device 2 according to these two embodiments which are similar to those of the embodiments described above bear the same references and are not described in detail, insofar as the above description can be transposed to them.
- the device 2 also comprises a diagnostic system 30 comprising a first sensor 32 for measuring the current Is which flows in the control zone 16, a second sensor 34 for measuring the current I which flows in the power zone 18 and an electronic processing unit programmed to compare the current values measured by the first sensor 32 and the second sensor 34 and to detect a failure of the protection device 2 as a function of the measured current values.
- a diagnostic system 30 comprising a first sensor 32 for measuring the current Is which flows in the control zone 16, a second sensor 34 for measuring the current I which flows in the power zone 18 and an electronic processing unit programmed to compare the current values measured by the first sensor 32 and the second sensor 34 and to detect a failure of the protection device 2 as a function of the measured current values.
- the diagnostic system 30 makes it possible to detect the appearance of a failure which may affect the proper functioning of the protection device 2, such as for example the failure of the control zone 16, a failure of the fuse 10 or the accidental breaking of a connectors.
- the value of the current Is measured by the first sensor 32 is linked to the value of the current I measured by the second sensor 34.
- these two current values I and Is are linked by a proportional relationship which is a function of the temperature of the protective device 2.
- a fault is present in the protection device 2 if the value of the current Is measured by the first sensor 32 is zero while the value of the current I measured by the second sensor 34 is not zero.
- the diagnostic system comprises a first electronic processing unit 36 which is connected to a second remote electronic processing unit 38, via a data link 40.
- the second processing unit 38 is for example configured to, upon receipt of a signal indicating a failure, trigger safety measures for circuit 1, such as for example disconnecting the electrical source supplying circuit 1 or disconnecting the electrical load 3 , for example by means of a contactor or a switch, not shown.
- the first sensor 32 and the second sensor 34 are both connected to the first processing unit 36.
- the comparison and the detection of a failure are carried out by the first processing unit. processing 36.
- the first processing unit 36 is further programmed to send a fault detection signal to the second processing unit 38 via the bus 40.
- the first sensor 32 is connected to the first processing unit 36.
- the second sensor 34 is connected to the second processing unit 38.
- the comparison and the detection of a failure are produced by the second processing unit 36.
- the first processing unit 36 is also programmed to transmit the current value measured by the current sensor to which it is connected to the second processing unit 38 via the bus 40.
- the sensors 32 and / or 34 are current sensors.
- the current sensors 32 and or 34 are Hall effect type sensors or inductive effect sensors or current transformers.
- the sensors 32 and / or 34 include a voltage sensor which measures the electric voltage across a resistor.
- the sensors 32 and / or 34 include a current injection device including a coil surrounding the branch of the circuit in which the current to be measured flows, the device being able to inject into the branch, by means of the coil, an electric current having a predefined shape (eg a pulse or a sinusoidal signal).
- the device comprises a second coil surrounding said branch and making it possible to measure the total current flowing in said branch, and a processing circuit makes it possible to automatically determine the value and / or signal form of the current to be measured flowing in said branch.
- the measurement of the current I by the system 30 is carried out indirectly, by measuring the electrical properties of the load 3.
- the second sensor 34 is not associated with an electrical conductor of the circuit 1 but, at on the contrary, is associated with the load 3.
- the second sensor 34 is then not necessarily a current sensor.
- the processing units 36 and 38 comprise for example a dedicated electronic circuit and / or a programmable microcontroller.
- the data link 40 is a wired link, for example a field bus such as a CAN bus or a LIN bus, or even a wireless link.
- a diagnostic system analogous to the diagnostic system 30 can be used in the embodiments of the protection device 2 comprising several breaking components 12, for example in the embodiments of the protection device 2 illustrated in Figures 5 and 8.
- the various components of the diagnostic system 30 can be integrated in the same housing.
- At least some of the components of the diagnostic system 30 can be integrated into the same electronic element, such as an integrated circuit of the AS IC type.
- the diagnostic system 30 may include a temperature sensor, preferably installed near or in contact with the device 2.
- the unit processing electronics is programmed to correct the current measurements supplied by the or each sensor 32 and / or 34 as a function of the temperature measured.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1872011A FR3089053B1 (en) | 2018-11-28 | 2018-11-28 | Protection device for an electrical circuit, electrical circuit equipped with such a device and method of protecting such an electrical circuit |
PCT/EP2019/082686 WO2020109364A1 (en) | 2018-11-28 | 2019-11-27 | Protection device for an electric circuit, electric circuit equipped with such a device, and method for protecting such an electric circuit |
Publications (1)
Publication Number | Publication Date |
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EP3888113A1 true EP3888113A1 (en) | 2021-10-06 |
Family
ID=66690461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19806286.1A Pending EP3888113A1 (en) | 2018-11-28 | 2019-11-27 | Protection device for an electric circuit, electric circuit equipped with such a device, and method for protecting such an electric circuit |
Country Status (4)
Country | Link |
---|---|
US (1) | US11735377B2 (en) |
EP (1) | EP3888113A1 (en) |
FR (1) | FR3089053B1 (en) |
WO (1) | WO2020109364A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230141970A1 (en) * | 2021-11-11 | 2023-05-11 | Eaton Intelligent Power Limited | High voltage direct current circuit protection system and method |
CN117672729A (en) * | 2022-09-01 | 2024-03-08 | 西安中熔电气股份有限公司 | Multi-excitation source protection device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4920446A (en) * | 1986-04-18 | 1990-04-24 | G & W Electric Co. | Pyrotechnically-assisted current interrupter |
US7875997B2 (en) * | 2003-08-08 | 2011-01-25 | Delphi Technologies, Inc. | Circuit interruption device |
PL2395534T3 (en) * | 2010-06-08 | 2013-10-31 | Eaton Electrical Ip Gmbh & Co | Tripping unit for a circuit breaker |
JP4915473B1 (en) * | 2010-12-27 | 2012-04-11 | ダイキン工業株式会社 | Cutting device |
CA2825415C (en) * | 2011-01-19 | 2019-04-30 | Cooper Technologies Company | Fusible switching disconnect modules and devices with in-line current detection |
JP6357221B2 (en) * | 2014-03-07 | 2018-07-11 | Littelfuseジャパン合同会社 | Protective device |
FR3041143B1 (en) * | 2015-09-10 | 2017-10-20 | Mersen France Sb Sas | PROTECTIVE DEVICE FOR AN ELECTRICAL CIRCUIT, ELECTRIC CIRCUIT EQUIPPED WITH SUCH A DEVICE AND METHOD FOR PROTECTING SUCH AN ELECTRICAL CIRCUIT |
US10312040B2 (en) * | 2016-05-11 | 2019-06-04 | Eaton Intelligent Power Limited | Modular circuit protection systems and methods |
FR3063570B1 (en) * | 2017-03-03 | 2019-04-19 | Mersen France Sb Sas | DOUBLE CONTROL PROTECTION DEVICE FOR AN ELECTRIC CIRCUIT AND ELECTRIC CIRCUIT COMPRISING SAID PROTECTION DEVICE |
DE102017106896B4 (en) * | 2017-03-30 | 2023-02-02 | Infineon Technologies Ag | Electronic switch for electronic fuse |
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2018
- 2018-11-28 FR FR1872011A patent/FR3089053B1/en active Active
-
2019
- 2019-11-27 WO PCT/EP2019/082686 patent/WO2020109364A1/en unknown
- 2019-11-27 EP EP19806286.1A patent/EP3888113A1/en active Pending
- 2019-11-27 US US17/297,820 patent/US11735377B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US11735377B2 (en) | 2023-08-22 |
WO2020109364A1 (en) | 2020-06-04 |
US20220013308A1 (en) | 2022-01-13 |
FR3089053B1 (en) | 2020-12-18 |
FR3089053A1 (en) | 2020-05-29 |
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