• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a protection device (2) for an electric circuit (1), comprising a first fuse (8), a pyroelectric switch (12) connected in parallel to the first fuse and comprising a control zone (16), suitable for receiving a trigger signal (S), and a power region (18) for the passage of electric current. The device further comprises and a control circuit configured to develop and transmit the trigger signal to the control area. The device comprises a second fuse connected in series between a first input lead (4) and the first fuse and capable of supplying a supply voltage (V) to the control circuit, which is connected between the second fuse and the fuse zone. ordered.
    公开号:FR3041143A1
    申请号:FR1558433
    申请日:2015-09-10
    公开日:2017-03-17
    发明作者:Palma Gianfranco De；Remy Ouaida
    申请人:Mersen France SB SAS；
    IPC主号:
    专利说明:

    Protective device for an electric circuit, electric circuit equipped with such a device and method for protecting such an electric circuit The invention relates to a protection device for an electric circuit, and an electric circuit equipped with such a device. protection device. Finally, the invention relates to a method for protecting such an electrical circuit.
    In the field of protection of an electrical circuit, it is known to use an electrical protection device or component capable of opening the electric circuit when the latter is traversed by an electrical fault current, such as a current of overload or short circuit current. In this regard, several protection devices exist, such as fuses. In a known manner, a fuse is a dipole that uses the Joule effect of the electric current flowing through it to, in case of overcurrent, melt an electrical conductor that opens the electrical 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 known as "pyroelectric switches" or "pyroswitches" in the English language, are also known. A limitation of pyrotechnic circuit breakers is today their low ability to cut high voltages, for example greater than 50V. Indeed, when cutting under high voltage, there is an arcing that can cause the explosion of the device. In addition, in order to guarantee the cut, the pyrotechnic circuit breakers are often bulky. In this regard, it is also known to use a hybrid protection device characterized by a parallel connection between two electrical protection components, such as a fuse and a pyrotechnic circuit breaker. US-7875997-B1 discloses an example of such a device. The paralleling between these two components brings many advantages. First, the pyrotechnic circuit breaker is less resistive than the fuse, the majority of the electric current will flow in the pyrotechnic circuit breaker. When the protection trips under a fault current, the pyrotechnic circuit breaker opens. The fuse is still closed at this stage, it bypasses the pyrotechnic circuit breaker, avoiding the appearance of an electric arc within the latter. The current then flows into the fuse, melting it. Such a protection device can be used with high voltages that are greater than the limit voltage of the pyrotechnic circuit breaker, up to a voltage level equivalent to the fuse rating. Since the fuse only sees low currents in nominal use, its size can be reduced, which reduces its cost and cut-off time.
    However, the pyrotechnic circuit breaker requires a control circuit able to provide the cutoff control. Such a control circuit can be complex and include, for example, a current sensor, a data processing unit and a microcontroller. Thus, the control circuit needs to be powered by an external power source. The hybrid protection device, consisting of the fuse, the pyroelectric switch and its control circuit, is not autonomous and, despite lower costs for the fuse, such a device generates a higher cost and bulk, especially in because of the external power source. It is these drawbacks that the invention intends to remedy more particularly by proposing a new protective device for an electrical circuit which proves to be independent, while reducing production costs.
    In this spirit, the invention relates to a protection device for an electrical circuit configured to transmit an electric current, the protection device comprising: a first conductor, a second conductor, a first fuse connected to the output conductor, at least one pyroelectric switch connected in parallel with the first fuse, the pyroelectric switch comprising a control zone, able to receive a tripping signal, and a power zone for the passage of electric current, and a control circuit configured to developing and transmitting the trip signal to the control zone of the pyroelectric switch, the device further comprising a second fuse connected in series between the input conductor and the first fuse and capable of supplying a supply voltage to the control circuit, and in that the control circuit is connected between the second fuse and the Do not control the pyroelectric switch.
    Thanks to the invention, the second fuse provides information of presence of a fault electric 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 pyroelectric switch. The protection device has a low production cost and space requirement because it does not require an external power source for triggering the pyroelectric switch. The protection device thus allows the recovery of the electrical energy generated by the fusion of the second fuse. In addition, the protection device according to the invention induces very low power losses and improved cutoff performance.
    According to advantageous but non-obligatory aspects of the invention, such a protection device comprises one or more of the following characteristics, taken in any technically permissible combination: the breaking current of the second fuse is equal to a nominal value of electric current, this nominal current value being defined as being the maximum value of the current intended to flow in the protection device during normal operation, and the breaking voltage of the first fuse is equal to a nominal value of electrical voltage, this nominal value of voltage being defined as the maximum value of the voltage expected to be applied across the protection device during normal operation. - The power zone of the pyroelectric switch has a much lower electrical resistance than the first fuse. - The breaking current of the first fuse is at least four times less than or equal to the nominal value of electric current, and the cutoff voltage of the second fuse is at least four times less than or equal to the nominal voltage value. the device is configured to be successively in a closed configuration where the first and second fuses are not fused, a first intermediate configuration where the second fuse is melted and the supply voltage is supplied to the control circuit; second intermediate configuration where the pyroelectric switch is tripped and the first fuse is not fused, and an opening configuration where and the first and second fuses are melted. the device comprises at least two pyroelectric switches connected in parallel to the first fuse between the first conductor and the second conductor. - The control circuit comprises a potentiometer adapted to control the trigger signal transmitted to the control zone of the pyroelectric switch. The invention also relates to an electric circuit configured to be powered by an electric current, the electric circuit being equipped with a protection device according to the invention.
    Finally, the invention relates to a method for protecting an electrical circuit according to the invention, the method comprising, at least, steps of: a) melting of the second fuse caused by an electric fault current and supply circuit control, b) transmission, by means of the control circuit, of the trip signal to the pyroelectric switch, c) tripping of the pyroelectric switch and shutdown of the power zone of the pyroelectric switch, d) fusing the first fuse caused by the fault current.
    According to a particular embodiment of the invention, during step a), the supply voltage of the control circuit is generated by an electric arc which is installed at the terminals of the second fuse. The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows, a protection device, an electrical circuit and a method according to the invention. , given solely by way of nonlimiting example and with reference to the accompanying drawings, in which: - Figure 1 is a schematic representation of a protection device according to the invention and an electrical circuit comprising this device; protection; - Figure 2 is a schematic representation of the protection device in Figure 1, when a second fuse is melted; - Figure 3 is a representation similar to Figure 2, when the pyrotechnic circuit breaker is open; - Figure 4 is a representation similar to Figure 3, when a first fuse is melted; FIG. 5 is a block diagram of a protection method according to the invention; and FIG. 6 is a representation similar to FIG. 1 for a protection device and a circuit according to a second embodiment of the invention. FIG. 1 shows an electric circuit 1 configured to be powered 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, continuous or alternating depending on the load 3.The protection device 2 is able to open the electrical circuit 1 when it is crossed by a fault current. An electrical fault current is considered to be any electric current I having an intensity greater than or equal to a nominal current value ln, also called nominal current ln. This rated current value ln is defined as the maximum value of the current intended to flow in the protection device 2 during normal operation. It is predetermined according to the nature of the electric circuit 1. Thus, in the following description, the fault current is defined as the sum ln + ld, where ld designates an overcurrent. The maximum electrical potential difference that can be applied between the terminals of the protection device 2 by supplying the load 3, uninterrupted by the protection device 2, is called voltage nominal value and noted Vn in what follows. This nominal value of voltage is also determined according to the nature of the electrical circuit. The choice of the rated current values ln and the nominal value of voltage Vn depends on the nature of the load 3 to be protected.
    The fault current ld is, for example, an overload current or a short-circuit current and constitutes a risk for the load 3 of the electrical circuit 1. The protection device 2 comprises a first conductor 4 and a second conductor 6 In this example, the first conductor 4 forms an input conductor of the electric current, and the second conductor 6 forms an output conductor of the electric current. The 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 electric current. In normal operating mode, that is to say in the absence of current electrical fault, the electric current I flowing between the conductors 4 and 6 is less than or equal to the nominal current value ln and the voltage across the conductors 4 and 6 is less than or equal to the nominal voltage Vn.
    The protection device 2 also comprises a first fuse 8 and a second fuse 10 electrically connected in series between the conductors 4 and 6. The first fuse 8 is connected to the output conductor 6, while the second fuse 10 is connected in series between the input conductor 4 and the first fuse 8. There is 5 an intermediate conductor connecting the fuses 8 and 10 between them, which is interposed between the conductors 4 and 6.
    In known manner, 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 it is crossed by 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 here defined as the value of the electrical voltage across the fuse from which the fuse can not interrupt the flow of current when the fuse conductive element was destroyed. When a fuse has started to fuse, if a voltage greater than this cut-off voltage is applied between its terminals, then an electric arc is formed between these terminals and continues there, allowing the circulation of an electric current.
    In what follows, a fuse is said to be "melted" when the conductive element has been destroyed and that no electric arc can be formed taking into account the values of the electrical voltages present in the electrical circuit 1. It then forms a electrically open circuit through which no electric current can flow. A fuse is said to be "melting" when the electric current passing through it has exceeded the breaking current, resulting in a beginning of fusion of the conductive element, but that the voltage at its terminals is greater than the voltage of This fuse is cut off, causing an electric arc to appear between its terminals. The electric arc continues as long as the fuse is melting.
    The first and second fuses 8 and 10 have different sizes. In particular, the breaking current 18 of the first fuse 8 is much smaller than the nominal value ln ,. By "clearly" is meant that the breaking current is at least four times, for example ten times or fifty times lower than the nominal value ln. This dimensioning is made possible by the fact that the first fuse 8 is normally not intended to be traversed by the nominal current ln. The breaking current l10 of the second fuse 10 is equal, in practice to 1% or 3%, to the nominal value ln. Thus, the breaking current 18 of the first fuse 8 is significantly lower than the breaking current l10 of the second fuse 10.
    The cut-off voltage V8 of the first fuse 8 is equal, in practice to 1% or 3%, to the nominal value Vn. The cutoff voltage V10 of the second fuse 10 is significantly lower than the nominal value Vn. By "clearly" is meant that the breaking voltage is at least four times, for example five times or ten times lower than the nominal value Vn. Thus, the cutoff voltage V10 of the second fuse 10 is significantly lower than the cutoff voltage V8 of the first fuse 8.
    The protection device 2 also comprises a pyroelectric switch 12 and a control circuit 14. The pyroelectric switch 12 is connected in parallel to the first fuse 8 between the intermediate conductor 5 and the output conductor 6. The pyroelectric switch 12 comprises a first zone 16 and a second zone 18.
    The first zone 16 is called the control zone and is able to receive a trigger signal S. The second zone 18 is called the power zone.
    The power zone 18 is the portion of the pyroelectric switch 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. In particular, the power zone 18 has a electrical resistance which is much lower than that of the first fuse 8, for example at least ten times lower. Thus, when the electric current I passes through the protection device 2, it can be considered that such an electric current passes through the second fuse 10 and the power zone 18 of the pyroelectric switch 12, since only a negligible part of the electrical current passes through it. the first fuse 8.
    In practice, in the case where an electric current greater than the nominal current ln passes through the protection device 2, the second fuse 10 begins to melt and an electric arc A, as seen in Figure 2, begins to appear between its terminals. The portion of electric current flowing through the first fuse 8 does not have sufficient intensity to trigger the melting of the first fuse 8. Thus, the second fuse 10 is sized and arranged to begin melting before the first fuse 8.
    The control zone 16 of the pyroelectric switch 12 comprises a resistor 20 suitable for heating when an electric current passes through it. In a manner known per se, the pyroelectric switch also comprises a not shown explosive agent, for example an explosive powder, and a cut-off element, such as a piston or a guillotine. The cutoff element, which is not shown, is made of electrically insulating material, for example plastic. It is capable of cutting the power zone 18. In practice, when the resistance 20 of the control zone 16 is crossed by an electric current, the resistor heats up and triggers the detonation of the explosive agent which switches the element cutting a first position where it is remote from the power zone 18 to a second position where it intersects the power zone 18 so as to interrupt the passage of electric current in the electrical circuit 1.
    The control circuit 14 is configured to develop and transmit the trigger signal S to the control zone 16 of the pyroelectric switch 12. The control circuit 14 is connected between the second fuse 10 and the control zone 16. In practice , the triggering signal S produced by the control circuit 14 is a tripping electric current ls which is transmitted to the control zone 16. Thus, the tripping current ls passes through the resistor 20 and triggers the pyroelectric switch 12.
    In known manner, the control circuit 14 may comprise one or more active and / or passive electrical components for the generation and transmission of the trigger signal S. In particular, the control circuit 14 does not include an internal power source. .
    According to a variant which is not shown in the figures, the control circuit 14 comprises a potentiometer able to control the triggering current ls transmitted to the pyroelectric switch 12. In practice, the potentiometer is configured to modulate the intensity of the current electrical ls which is supplied to the control zone 16 of the pyroelectric switch 12. Thus, the potentiometer of the control circuit 14 is configured to control the opening speed of the pyroelectric switch 12.
    Thus, the protection device 2 is configured to be in different configurations C1, C2, C3, and C4, namely a closure configuration C1, a first intermediate configuration C2, a second intermediate configuration C3 and an opening configuration C4.
    In the closure configuration C1 shown in FIG. 1, the electric current I which supplies the electrical circuit 1 is smaller than the nominal current I n and thus the first and second fuses 8 and 10 are not fused.
    In the first intermediate configuration C2 shown in FIG. 2, the electric current I which supplies the electric circuit 1 is greater than the threshold value ln. The second fuse 10 then begins to melt, and the electric arc A appears between its terminals. This electric arc causes the appearance of a supply voltage V, which is then supplied to the control circuit 14. In fact, the cutoff voltage V10 of the second fuse 10 is chosen so that the arc Electrical A remains present between its terminals while it is melting, as long as current I flows.
    In the second intermediate configuration C3 shown in FIG. 3, the pyroelectric switch 12 is triggered and the first fuse 8 is closed. The control circuit 14, powered by the voltage V, develops from this voltage V and transmits the trigger signal S, in the form of the current ls, to the electrical resistance 20 of the control zone 16, triggering the pyroelectric switch 12 which quickly opens the power zone 18. Thus, the electric current I passes through the first fuse 8.
    In the aperture configuration C4 shown in FIG. 4, the first and second fuses 8 and 10 are fused. Indeed, from the moment when the second intermediate configuration C3 is reached, the fault electrical current causes the first fuse 8 to melt after a predetermined period of time, of the order of a few milliseconds (ms), which depends on the characteristics of the first fuse 8. Since the value of the breaking current 18 of the first fuse 8 is chosen to be much smaller than the value of the nominal current ln, the first fuse 8 melts very quickly when the current I traverses it. The cutoff voltage V8 the first fuse being equal to the nominal value Vn, the fuse quickly melts and the electric arc at its terminals does not remain established long, unlike the second fuse 10. In FIG. 1, the control circuit 14 is represented as a " housing >> connected between the second fuse 10 and the control zone 16. In FIGS. 2 to 4, the control circuit 14 is represented by an electrical resistance 140, for the s reasons developed below. The electrical resistance 140 is subjected to the supply voltage V generated at the terminals of the second fuse 10. Here, the value of the resistor 20 is less than ten times or one hundred times the value of the resistor 140. value of the resistor 140 which dimensions the value of the current Is transmitted to the control zone 16. In fact, independently of the electrical components of the control circuit 14, the latter can be represented electrically by a single resistor 140 in an electric diagram, as in Figures 2 to 4. In the diagrams of Figures 2 to 4, the electrical resistance 140 is electrically connected in series with the electrical resistance 20. The assembly formed by the resistor 20 and the resistor 140 is connected electrically in parallel with the second fuse.
    A protection method of the electrical circuit 1, equipped with the protection device 2, is implemented when an electric current I greater than the nominal current I n occurs in the electrical circuit 1 and passes through the protection device 2. In this case, the overcurrent ld is strictly greater than zero. By default, the protection device 2 is in the closed configuration C1, since the electric current I supplies the electrical circuit 1 and the first and second fuses 8 and 10 are not fused. The protection process is described below.
    At the beginning of this process, and during an initial step a), a fault occurs in the power supply of the electrical circuit 1 and the electric current passes through the protection device 2. Because of the electric current, and within a range of predetermined time by the gauge of the second fuse 10, the second fuse 10 begins to melt and the electric arc A is installed across the second fuse 10. As mentioned above, the second 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 supply the control circuit 14. At the end of step a), the protection device 2 is in its first intermediate configuration C2 where the second fuse 10 is melting and the voltage supply V is supplied to the control circuit 14. As mentioned above, since the control circuit 14 is a passive circuit, the supply voltage V supplied by the second fuse 10 represents the only power supply source of the circuit. command 14 necessary for the operation thereof. Thus, during step a), the method comprises melting the second fuse 10 caused by the electric current I greater than 1n and supplying the control circuit 14.
    The method then comprises a step b) in which the control circuit 14 generates the trigger signal S, which corresponds to the triggering electric current ls. Then, the control circuit 14 transmits this tripping current ls to the pyroelectric switch 12, in particular to the control zone 16 of the pyroelectric switch 12. Since the electric arc A is still present at the terminals of the second fuse 10 , the fault electric current Id still passes through the power zone 18 of the pyroelectric switch 12. In step b), the method comprises the transmission, with the aid of the control circuit 14, of the tripping signal S to the pyroelectric switch 12.
    Then, the method comprises a step c) which comprises triggering the pyroelectric switch 12 and cutting the power zone 18 of the pyroelectric switch 12. In practice, the electric current ls passes through the electrical resistance 20 of the zone 16, which heats up and triggers the detonation of the explosive agent of the pyroelectric switch 12. As explained above, the detonation of the explosive agent tilts the cutting element from its first position to its second position. so as to cut the power zone 18 of the pyroelectric switch 12. At the end of step c), the protection device 2 is in its second intermediate configuration C3 where the pyroelectric switch 12 is triggered, the power zone 18 is open and the first fuse 8 is still closed.
    Finally, the method comprises a step d) in which the electric current passes through the first fuse 8, since the power zone 18 of the pyroelectric switch 12 is open. The first fuse 8 being undersized with respect to the second fuse 10, the first fuse 8 melts quickly because of the electric current. Thus, the protection device 2 ensures the opening of the electric circuit 1, since no electric arc is installed across the zone 18 of the switch 12. An electric arc may appear at the terminals of the first fuse 8 when it melts, but it turns off quickly because the breaking voltage of the first fuse 8 is of the same order of magnitude of the nominal voltage Vn. Once the first fuse 8 is melted, the electric circuit opens and the current I no longer flows. Arc A turns off in turn, and the second fuse 10 completely melts. The protective device 2 is then in its opening configuration C4 where the first and second fuses 8 and 10 are melted.
    Figure 6 shows a second embodiment of the invention. The elements of the protection device 2 of this embodiment which are analogous to those of the first mode bear the same references and are not described in detail to the extent that the above description can be transposed to them. The protection device 2 comprises two pyroelectric switches 12A and 12B. The two pyroelectric switches 12A and 12B are connected in parallel to the first fuse 8 between the input lead 4 and the output lead 6. In particular, each pyroelectric switch 12A and 12B comprises an electrical resistor 20A and 20B. The electrical resistors 20A and 20B are in parallel and are thus traversed by a portion of the electric trip current ls which causes the heating of these resistors 20A and 20B, as explained above.
    According to a variant which is not shown in the figures, the protection device 2 comprises three or more pyroelectric switches connected in parallel. The introduction of several pyroelectric switches connected in parallel allows the protection device 2 to cut an electric current I having a very high intensity. For example, for the variant shown in FIG. 6, each pyroelectric switch 12A and 12B is configured to cut a fault electric current Id having an intensity of 200 amperes. Thus, the protection device 2 is able to cut an electric current I having a total intensity of 400 amperes.
    Alternatively, 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 operation.
    The variants envisaged above can be combined with one another to generate new embodiments of the invention.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1Dispositif (2) protection for an electrical circuit (1) configured to transmit an electric current (I), the protection device comprising: - a first conductor (4), - a second conductor (6), - a first fuse (8) connected to the output conductor, - at least one pyroelectric switch (12) connected in parallel to the first fuse, the pyroelectric switch comprising a control zone (16), able to receive a triggering signal (S), and a power region (18) for the passage of electric current, and - a control circuit (14) configured to develop and transmit the trigger signal (S) to the control zone of the pyroelectric switch, the device being characterized in that it further comprises a second fuse (10) connected in series between the first conductor (4) and the first fuse (8) and capable of supplying a supply voltage (V) to the control circuit (14). ), and in the control circuit is connected between the second fuse (10) and the control zone (16) of the pyroelectric switch (12).
    [2" id="c-fr-0002]
    2. - Device according to claim 1, characterized in that: - the breaking current (l10) of the second fuse (10) is equal to a nominal value (ln) of electric current, this nominal current value being defined as being the maximum value of the current intended to flow in the device (2) during normal operation, and - the cut-off voltage (V8) of the first fuse (8) is equal to a nominal value (Vn) of the electrical voltage, this nominal value of voltage being defined as the maximum voltage value intended to be applied across the device (2) in normal operation.
    [3" id="c-fr-0003]
    3. - Device according to one of the preceding claims, characterized in that the power zone (18) of the pyroelectric switch (12) has an electrical resistance at least ten times less thanTielle the first fuse (8).
    [4" id="c-fr-0004]
    4. - Device according to claims 2 and 3, characterized in that: - the breaking current (l8) of the first fuse (8) is at least four times less than or equal to the nominal value (ln) of electric current, and the breaking voltage (V10) of the second fuse (10) is at least four times lower than or equal to the nominal voltage value (Vn).
    [5" id="c-fr-0005]
    5. - Device according to one of the preceding claims, characterized in that it is configured to be successively in: - a closed configuration (C1) where the first and second fuses (8, 10) are not melted, - a first intermediate configuration (C2) where the second fuse (10) is melted and the supply voltage (V) is supplied to the control circuit (14), - a second intermediate configuration (C3) where the pyroelectric switch (12) is triggered and the first fuse (8) is not melted, and - an opening configuration (C4) where and the first and second fuses are melted.
    [6" id="c-fr-0006]
    6. - Device according to one of the preceding claims, characterized in that it comprises at least two pyroelectric switches (12A, 12B) connected in parallel to the first fuse (8) between the first conductor (4) and the second conductor ( 6).
    [7" id="c-fr-0007]
    7. - Device according to one of the preceding claims, characterized in that the control circuit (14) comprises a potentiometer adapted to control the trigger signal (S) transmitted to the control zone (16) of the pyroelectric switch (12).
    [8" id="c-fr-0008]
    8. - Electrical circuit (1) configured to be powered by an electric current (I), the electric circuit being equipped with a protection device (2) according to one of the preceding claims.
    [9" id="c-fr-0009]
    9. -Procédé protection of an electrical circuit (1) according to claim 8, the method comprising, at least, steps of: a) melting the second fuse (10) caused by a fault current (Id ) and supplying the control circuit (14), b) transmitting, using the control circuit, the trigger signal (S) to the pyroelectric switch (12), c) tripping the pyroelectric switch and breaking of the power zone (18) of the pyroelectric switch, d) melting of the first fuse (8) caused by the electric fault current.
    [10" id="c-fr-0010]
    10. A method according to claim 9, characterized in that, in step a), the supply voltage (V) of the control circuit (14) is generated by an electric arc (A) which is installed at the terminals of the second fuse (10).
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    US10529521B2|2020-01-07|
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    法律状态:
    2016-09-05| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-17| PLSC| Search report ready|Effective date: 20170317 |
    2017-08-24| PLFP| Fee payment|Year of fee payment: 3 |
    2018-08-24| PLFP| Fee payment|Year of fee payment: 4 |
    2019-08-22| PLFP| Fee payment|Year of fee payment: 5 |
    2020-08-12| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1558433A|FR3041143B1|2015-09-10|2015-09-10|PROTECTIVE DEVICE FOR AN ELECTRICAL CIRCUIT, ELECTRIC CIRCUIT EQUIPPED WITH SUCH A DEVICE AND METHOD FOR PROTECTING SUCH AN ELECTRICAL CIRCUIT|FR1558433A| FR3041143B1|2015-09-10|2015-09-10|PROTECTIVE DEVICE FOR AN ELECTRICAL CIRCUIT, ELECTRIC CIRCUIT EQUIPPED WITH SUCH A DEVICE AND METHOD FOR PROTECTING SUCH AN ELECTRICAL CIRCUIT|
    MX2018002691A| MX2018002691A|2015-09-10|2016-09-09|Protective device for an electrical circuit, electrical circuit provided with such a device and method for protecting such an electrical circuit.|
    PCT/EP2016/071280| WO2017042321A1|2015-09-10|2016-09-09|Protective device for an electrical circuit, electrical circuit provided with such a device and method for protecting such an electrical circuit|
    EP16770697.7A| EP3347908B1|2015-09-10|2016-09-09|Protective device for an electrical circuit, electrical circuit provided with such a device and method for protecting such an electrical circuit|
    KR1020187006789A| KR20180048695A|2015-09-10|2016-09-09|Protection devices for electric circuits, electric circuits provided with such devices, and methods for protecting such electric circuits|
    RU2018108107A| RU2713468C2|2015-09-10|2016-09-09|Protective device for electric circuit, electric circuit with such device and method of protection of such electric circuit|
    CN201680052051.6A| CN107949895A|2015-09-10|2016-09-09|Protective device for circuit, be provided with the circuit of the device and the method for protecting the circuit|
    CA2996694A| CA2996694A1|2015-09-10|2016-09-09|Protective device for an electrical circuit, electrical circuit provided with such a device and method for protecting such an electrical circuit|
    JP2018512598A| JP6916169B2|2015-09-10|2016-09-09|A protective device for an electric circuit, an electric circuit provided with the device, and a method for protecting the electric circuit.|
    US15/758,494| US10529521B2|2015-09-10|2016-09-09|Protective device for an electrical circuit, electrical circuit provided with such a device and method for protecting such an electrical circuit|
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