EP3559966B1 - Dispositif de commutation électrique - Google Patents

Dispositif de commutation électrique Download PDF

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Publication number
EP3559966B1
EP3559966B1 EP18704417.7A EP18704417A EP3559966B1 EP 3559966 B1 EP3559966 B1 EP 3559966B1 EP 18704417 A EP18704417 A EP 18704417A EP 3559966 B1 EP3559966 B1 EP 3559966B1
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EP
European Patent Office
Prior art keywords
switching
electrical
resistor
point
switching point
Prior art date
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Active
Application number
EP18704417.7A
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German (de)
English (en)
Other versions
EP3559966C0 (fr
EP3559966A1 (fr
Inventor
Thomas Chyla
Stefan Giere
Volker Lehmann
Jens Schimmelpfennig
Jörg Teichmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Global GmbH and Co KG
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Siemens Energy Global GmbH and Co KG
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Publication date
Application filed by Siemens Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Publication of EP3559966A1 publication Critical patent/EP3559966A1/fr
Application granted granted Critical
Publication of EP3559966C0 publication Critical patent/EP3559966C0/fr
Publication of EP3559966B1 publication Critical patent/EP3559966B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/165—Details concerning the impedances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts

Definitions

  • the invention relates to an electrical switching device having at least one switching point and at least one switching resistor, which is electrically connected in parallel to the switching point and has a stack of resistance elements.
  • An electrical switching device is known, for example, from the published patent application DE 10 2006 004 811 A1 known.
  • a switching resistor is electrically connected in parallel to a switching point.
  • Electrical switching devices are preferably manufactured in a modular design so that components can be used multiple times in different series. Modular components also make it easier to adapt electrical switching devices to changing requirements.
  • CH 669 863 A5 discloses a high-voltage switch in T or Y design, which has at least one switching point and at least one switching resistor, wherein the at least one switching resistor is electrically connected in parallel to the switching point.
  • the switching resistor has a stack of resistance elements.
  • US 5 629 666 A discloses an electrical switching device according to the preamble of claim 1, having a power resistor having a large heat capacity per unit volume and a suitable and stable electrical resistance.
  • This power resistor comprises a sintered body containing alumina and carbon and a pair of electrodes formed on opposite surfaces of the sintered body.
  • the object is achieved in an electrical switching device of the type mentioned at the outset in that the number of resistance elements which form the stack has a ratio to the electrical resistance of the stack of resistance elements in ohms within the limits of 0.5 to 2, in particular 0.5 to 1.5, and the length of the switching resistor in mm has a ratio of less than or equal to 8, in particular less than or equal to 6, to the electrical resistance of the switching resistor in ohms.
  • An electrical switching device is a device that serves to interrupt or establish a current path.
  • the electrical switching device can interrupt or connect an electrical current by interrupting or establishing a current path.
  • the amount of electrical current to be controlled can vary.
  • an electrical switching device can be designed as a load switching device, i.e. the electrical switching device can handle currents that correspond to its maximum rated value.
  • the electrical switching device is designed as a so-called isolating switching device, i.e. apart from negligible charging and discharging currents, the electrical switching device is designed not to control any electrical current.
  • An electrical switching device can also be designed as a so-called power switching device, i.e.
  • the electrical switching device also serves to control currents that are above its rated current. For example, it is possible for a power switching device to control short-circuit currents that are a multiple of the rated current.
  • electrical switching devices can be used at different points in electrical power transmission networks. Electrical switching devices can be used in low, medium, high and extra-high voltage ranges. It is advantageous if one switching point of the switching device is a mechanical switching point. At a mechanical switching point, the impedance of the switching point is changed by switching contact pieces that can be moved relative to one another. Alternatively, however, a switching point can be designed on a semiconductor basis, for example, whereby the impedance of the switching point can vary due to external wiring.
  • a switching resistor is arranged parallel to the switching point.
  • a switching resistor supports the function of the switching point. For example, if a phase conductor is interrupted and an electrical current is interrupted as a result, this can have a negative effect on the switching point. For example, pendulum movements or oscillations of energy flows can occur in electrical energy transmission networks, which lead to a voltage increase across the switching point.
  • a switching resistor can be used to limit so-called recovery voltages, which supports the safe and rapid establishment of a high-impedance state of the switching point. For example, oscillations can occur in alternating voltage networks, which lead to voltage increases across a switching point that are greater than the rated voltage for which the electrical switching point is designed.
  • the electrical switching device is used in a direct voltage system, where an oscillation of the direct current can be forced to interrupt a phase conductor, for example by a current zero crossing through an external circuit, in order to simplify the interruption of a phase conductor and thus possibly an interruption of the direct current.
  • the switching resistor it can advantageously be provided that it is composed of several resistance elements, so that the desired resistance value of the switching resistor is achieved in the sum of the resistance elements combined with one another.
  • the resistance elements can, for example, be assembled in the manner of a stack.
  • the resistance elements can, for example, each have a cylindrical shape, in particular with a circular cylindrical or hollow cylindrical cross-section.
  • the end faces of several resistance elements can be arranged next to one another and form a stack.
  • an arrangement of contacting elements can also be provided between the resistance elements.
  • the stack of resistance elements can be assembled to form an angularly rigid composite.
  • the resistance elements can be pressed against one another by applying an external force.
  • the stack of resistance elements can also be surrounded by a casing which serves to axially guide the stack of resistance elements.
  • the casing should have an electrically insulating effect.
  • the stack of resistance elements can be positioned inside a tube made of electrically insulating material, whereby the tube can be used to apply contact forces to the resistance stack.
  • the electrically insulating tube it is possible for the electrically insulating tube to accommodate the stack of resistance elements and for contact points to be arranged at the end of the insulating tube for electrically connecting the switching resistor in parallel to a switching point.
  • the contact points can also serve to hold and position the switching resistor.
  • the number of resistance elements forming a stack is in a ratio of 0.5 to 2, in particular 0.5 to 1.5, to the electrical resistance of the stack of resistance elements in ohms.
  • a ratio of the number of resistance elements in the stack to the electrical resistance of less than or equal to 2, in particular less than or equal to 1.5 according to the invention, a favorable release of heat from the stack of resistance elements is possible. Furthermore, the length of the stack of resistance elements is limited in such a way that electrical parallel connection to the switching point is made easier.
  • the design of the individual resistance element is defined in relation to the partial resistance that the resistance element contributes to the total resistance of the stack. Furthermore, the mass of the stack of resistance elements is limited. It has proven to be particularly advantageous if the ratio of the number of resistance elements to the electrical resistance of the stack in ohms is within the limits of approximately 0.5 ... 0.7 to approximately 1.0 ... 2.
  • the dimensioning regulations allow the resistance elements to be manufactured inexpensively, for example using sintering processes, in particular of ceramics or similar.
  • the invention provides that the length of the switching resistor in mm to the electrical resistance of the switching resistor in ohms has a ratio of less than or equal to 8, in particular less than or equal to 6.
  • the switching resistor can be formed, for example, from one or more stacks of resistance elements.
  • the load capacity of the switching resistors can be improved by connecting several columns in parallel.
  • the switching resistor has only one stack of resistance elements, whereby even in such an embodiment the ratio of length to resistance in ohms of the on-resistance, in particular of the stack of resistance elements, corresponds to the dimensioning specification. It has proven advantageous to set the ratio of length of the switching resistor to the amount of the switching resistance in ohms in a range from 3 ... 4 to 6 ... 8.
  • the electrical switching device has a multiple-interrupting switching path with a first switching point and a second switching point, which are electrically contacted with one another, wherein between connection points of the multiple-interrupting switching path there is a distance in mm which is a maximum of 30 times, in particular a maximum of 25 times the amount of the switching resistance in ohms.
  • an electrical switching device serves to switch a current path or to switch an electrical current. If several switching points are used which together serve to switch a current path/electrical current, an electrical switching device with a switching path that interrupts several times is formed.
  • the switching points are preferably electrically connected in series with one another, so that the switching path has connection points of the electrical switching device at the end points of the interconnected switching points, between which a phase conductor (current path) or an electrical current is switched.
  • a contact element can be used to connect the first and the second switching point to one another, for example, which the two switching points are spaced apart from one another.
  • This contact element is preferably designed to be electrically conductive, so that an electrically conductive connection between the first and second switching points is made via the contact element.
  • Gear elements such as a gear head
  • the switching points can project from the contacting element.
  • the switching points can be arranged on opposite sides of the contacting element.
  • the switching points can project from the contacting element in opposite directions to one another, essentially in alignment.
  • the connection points of the multiple interruption switching path can be located at the ends of the two switching points facing away from the contacting element. It is thus possible, for example, to design an outdoor switching device in a live tank design, which can, for example, have several encapsulated housings in a T shape projecting from an electrically insulating support device.
  • a first switching resistor can be electrically connected in parallel to the first switching point.
  • a second switching resistor can be electrically connected in parallel to the second switching point. It can be provided that a switching resistor is assigned to both the first and the second switching point. However, it can also be provided that a switching resistor is assigned electrically in parallel to only the first switching point or only the second switching point. By electrically connecting switching resistors in parallel, the switching point to which the switching resistor is electrically connected in parallel is bridged by the switching resistor. In other words, in addition to the impedance-variable switching point, a parallel current path is set up via the switching resistor.
  • the switching resistance has such a high value that in the high-impedance state of the switching point only a negligible leakage current can flow across the switching resistor.
  • a temporary separation of the parallel current path created across the respective switching resistor must also be provided.
  • Such a separation of the parallel current path can preferably take place after a phase conductor has been interrupted and after the switching point has been successfully solidified.
  • solidification of the switching point is necessary in order to remove foreign substances in the area of the switching point, such as burn-off products or other interfering particles from the switching point.
  • the use of several switching points also offers the advantage of keeping an electrical voltage to be separated across the switching path distributed over several switching points, so that each of the switching points only needs to take on a portion of the voltage to be controlled between the contact points of the switching path.
  • encapsulation housing essentially electrically insulating tubular structures can be used, which are provided with fittings at the end openings.
  • the fittings can be designed to be electrically conductive, whereby the fittings can also be used to electrically contact the first or second switching point, which are arranged inside the respective encapsulation housing.
  • the switching resistors can also be electrically connected in parallel to the first or second switching point via the fittings.
  • the fittings can also serve as holding elements for supporting or carrying switching resistors. This can be particularly advantageous if the switching resistors are arranged outside the encapsulation housing.
  • a switching resistor can also be arranged inside an encapsulation housing.
  • a further advantageous embodiment can provide that the first or the second switching point is surrounded by an encapsulating housing, wherein a switching resistor is arranged outside the encapsulating housing.
  • An environment of a switching point with an encapsulated housing has the advantage that the switching point can be protected from external influences.
  • An encapsulated housing can, for example, be designed in the form of an electrically insulating tubular body, in the recess of which a switching point is arranged. The tubular body can be provided with fittings at the end to enable electrical contact to be made with the switching point located inside the encapsulated housing. If a switching resistor is arranged outside such an encapsulated housing, the encapsulated housing can be designed with its cross-section to match the dimensions of the respective switching point. If necessary, a switching resistor can then be arranged outside the encapsulated housing. This further supports a modular design of an electrical switching device in that the switching resistor is only arranged outside the encapsulated housing when required, whereby the dimensions of the encapsulated housing itself can be optimized for the switching point.
  • a further advantageous embodiment can provide that the first and the second switching point are each surrounded by an encapsulating housing, wherein a switching resistor is arranged outside an encapsulating housing.
  • both the first switching point and the second switching point are equipped with an encapsulating housing, it is possible to install each of the switching points in a protected space, whereby a switching resistor can be assigned to both switching points or just to one switching point.
  • Arranging the switching resistor outside the encapsulating housing enables the encapsulating housing and switching resistor to be aligned essentially parallel to one another.
  • the switching resistor can be connected in parallel via electrically conductive bodies (fittings) located at the end of the encapsulating housing, which contact the first and second switching points respectively.
  • the switching resistor can be supported on the respective encapsulating housing.
  • a further advantageous embodiment can provide that the first or the second switching point is surrounded by an encapsulating housing, wherein a switching resistor is arranged within an encapsulating housing.
  • An arrangement within the encapsulating housing, which surrounds the first or second switching point, has the advantage that the switching resistor can benefit from the mechanical protective effect of the encapsulating housing and does not itself require a separate casing. This enables electrical contact between the switching resistor and the respective switching point to be made in a simplified manner.
  • a further advantageous embodiment can provide that the first and the second switching point are each surrounded by an encapsulating housing, wherein a switching resistor is arranged within an encapsulating housing.
  • Equipping the first and second switching points with a respective encapsulation housing makes it possible to equip the first or second switching point or both switching points with a switching resistor,
  • the switching resistor is arranged in the respective encapsulation housing of the respective switching point.
  • the protective effect of the respective encapsulation housing can be extended to the switching resistor.
  • An advantageous embodiment can provide that an encapsulation housing is a pressure vessel.
  • an encapsulation housing is filled with an electrically insulating fluid.
  • an encapsulation housing as a pressure vessel makes it possible to fill the interior of the encapsulation housing with an electrically insulating fluid and to pressurize this electrically insulating fluid so that the interior of the encapsulation housing has a different pressure than the surroundings of the encapsulation housing.
  • the pressure vessel is designed in such a way that it can withstand a differential pressure. This makes it possible to enclose a suitable fluid within the encapsulation housing.
  • the encapsulation housing can be filled with an electrically insulating oil or an electrically insulating gas.
  • Gases or liquids with fluorine components have proven particularly advantageous, as they have a high electrically insulating effect on the one hand, but also a good arc-extinguishing effect on the other.
  • sulfur hexafluoride, fluoroketones, fluoronitriles can be used.
  • other electrically insulating fluids such as nitrogen, oxygen, etc. can also be used.
  • the electrical switching device is designed as an outdoor circuit breaker in live tank construction in the high voltage range, in particular for voltages above 800,000 volts.
  • the electrical switching device has a support frame 1, which is generally made of electrically conductive material and which carries earth potential.
  • a drive device 2 is positioned on the support frame 1.
  • the drive device 2 is also generally arranged at earth potential.
  • the drive device 2 enables the electrical switching device to be actuated, i.e. a current path to be separated or established.
  • the drive device 2 provides the energy required for this, in this case the necessary kinetic energy.
  • An electrically insulating section of a support column 3 is arranged on the support frame 1.
  • the support column 3 is in this case composed of a first and a second electrically insulating section, wherein the electrically insulating sections are essentially tubular and closed off at the ends with fittings. Facing sides of the electrically insulating sections of the support column 3 are screwed together so that an extended tubular support column 3 is formed.
  • the support column 3 is positioned on the support frame 1 with one of its front ends.
  • the electrically insulating sections of the support column 3 are hollow and provided with ribbing on the outer casing. The ribbing provides improved outdoor resistance by extending creepage paths on the surface of the support column 3 and forming drip noses on the support column 3.
  • a gear head 4 is arranged at the end of the support column 3 facing away from the support frame 1.
  • the gear head 4 closes off the support column 3 and is connected to the support column 3 at a rigid angle.
  • a first switching point 5 and a second switching point 6 are mounted on the gear head 4 in the transverse direction to the axial course of the support column 3.
  • the first and the second switching points are enclosed by a first encapsulation housing 7. or a second encapsulation housing 8.
  • the two encapsulation housings 7, 8 are designed to resemble an electrically insulating section of the support column 3. This means that the two encapsulation housings 7, 8 are essentially hollow-cylindrical, electrically insulating, tubular, with a fitting arranged at the end of the encapsulation housings 7, 8 to close off the encapsulation housings 7, 8.
  • the two encapsulation housings 7, 8 are arranged on opposite sides of the gear head 4 and protrude from the gear head 4 in opposite directions.
  • the ends of the two encapsulation housings 7, 8 facing the gear head 4 are mechanically connected to the gear head 4 via the fittings on the encapsulation housings 7, 8 there, so that the encapsulation housings 7, 8 are supported on the support column 3 via the gear head 4.
  • the housing of the gear head 4 is made of a conductive material, wherein an electrical contact of the fittings, which are connected to the gear head 4, is provided via the gear head 4.
  • the first and second switching points 5, 6 are arranged inside the encapsulation housings 7, 8.
  • the first and second switching points 5, 6 each have switching contact pieces that can be moved relative to one another.
  • the relatively movable switching contact pieces are designed in such a way that they can contact one another or can be separated from one another.
  • a kinematic chain for example in the form of an axially displaceable switching rod, is arranged inside the support column 3, which preferably has an electrically insulating effect. This makes it possible to transport a movement that is emitted by the drive device 2 on the support frame 1 within the support column 3 to the gear head 4.
  • the movement can be distributed into the two encapsulation housings 7, 8, so that a relative movement of the switching contact pieces of the first or second switching point 5, 6 can be carried out.
  • the switching points 5, 6 are arranged in such a way that the switching points are electrically contacted with the fitting of the respective encapsulation housing 7, 8, which is attached to the gear head 4.
  • the switching points are thus electrically connected in series with one another via the fittings which are connected to the gear head 4, via the gear head 4, so that a multiple-interruption switching path is formed.
  • the two switching points 5, 6 are electrically connected on their other side to a fitting which closes off the respective encapsulation housing 7, 8 at the free end.
  • connection points 9, 10 for the multiple (double) interruption switching path of the electrical switching device.
  • a distance D extends between the connection points 9, 10, which includes the length of the electrically insulating sections of the encapsulation housings 7, 8 as well as the electrically conductive contacting element, which serves to contact the two switching points 5, 6.
  • a switching resistor 11a, 11b is assigned to both the first switching point 5 and the second switching point 6.
  • the two switching resistors 11a, 11b are each electrically connected in parallel to the first switching point 5 and the second switching point 6, respectively.
  • the switching resistors 11a, 11b are each electrically connected to the fittings that limit the end of the encapsulation housing 7, 8 of the respective switching point 5, 6.
  • the switching resistors 11a, 11b are also mechanically held or supported via the fittings and thus via the encapsulation housing 7, 8.
  • the switching resistors 11a, 11b are each constructed in the same way.
  • the switching resistors 11a, 11b each have a stack of n-resistance elements.
  • the resistance elements are each arranged in a tubular electrically insulating cylinder, which on the one hand has a mechanical protection for the respective stack of resistance elements.
  • the cylinder also serves to apply force to the resistance elements located inside the switching resistor.
  • the number of switching resistors can vary depending on the dimensions of the respective encapsulation housing 7, 8 or the gear head 4. A stack of resistance elements therefore has n-resistance elements.
  • the encapsulation housings 7, 8, the support column 3 and the gear head 4 are each designed as pressure vessels, so that the interior of the encapsulation housings 7, 8, the support column 3 and the gear head 4 can be filled with an electrically insulating fluid that is encapsulated. Electrically insulating fluids that promote the insulation strength inside the support column 3 or inside the encapsulation housings 7, 8 are particularly advantageous.
  • the electrically insulating fluid inside the encapsulation housings 7, 8 can preferably be pressurized so that a differential pressure can act on the encapsulation housing 7, 8 or also on the support column 3 or the gear head 4. In this case, the encapsulation housings 7, 8 are to be designed as pressure vessels.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Thermistors And Varistors (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Adjustable Resistors (AREA)

Claims (9)

  1. Dispositif de commutation électrique comportant au moins un point (5, 6) de commutation ainsi qu'au moins une résistance (11a, 11b) de commutation, qui est montée électriquement en parallèle avec le point de commutation et qui comporte un empilement d'éléments (n) résistifs, la longueur de la résistance (11a, 11b) de commutation en mm par rapport à la résistance électrique de la résistance (11a, 11b) de commutation en Ohm ayant un rapport inférieur ou égal à 8, notamment inférieur ou égal à 6,
    caractérisé en ce que
    le nombre d'éléments (n) résistifs formant un empilement par rapport à la résistance électrique de l'empilement d'éléments (n) résistifs en Ohm est dans un rapport compris dans les limites de 0,5 à 2, notamment de 0,5 à 1,5.
  2. Dispositif de commutation électrique suivant la revendication 1,
    caractérisé en ce que
    le dispositif de commutation électrique comporte une section de commutation à interruptions multiples ayant un premier point (5) de commutation et un deuxième point (6) de commutation, qui sont en contact électrique l'un avec l'autre, dans lequel il y a une distance (D) en mm entre des points (9, 10) de connexion de la section de commutation à interruptions multiples, laquelle représente au maximum 30 fois, notamment au maximum 25 fois, la valeur de la résistance (11a, 11b) de commutation en Ohm.
  3. Dispositif de commutation électrique suivant la revendication 2,
    caractérisé en ce que
    une première résistance (11a) de commutation est montée électriquement en parallèle avec le premier point (5) de commutation et/ou une deuxième résistance (11b) de commutation est montée électriquement en parallèle avec le deuxième point (6) de commutation.
  4. Dispositif de commutation électrique suivant la revendication 2 ou 3,
    caractérisé en ce que
    le premier ou le deuxième point (5, 6) de commutation est entouré d'un boîtier de blindage, une résistance de commutation étant disposée à l'extérieur du boîtier de blindage.
  5. Dispositif de commutation électrique suivant la revendication 2 ou 3,
    caractérisé en ce que
    le premier et le deuxième point (5, 6) de commutation sont chacun entourés d'un boîtier (7, 8) de blindage, une résistance (11a, 11b) de commutation étant disposée à l'extérieur du boîtier de blindage.
  6. Dispositif de commutation électrique suivant la revendication 2 ou 3,
    caractérisé en ce que
    le premier ou le deuxième point (5, 6) de commutation est entouré d'un boîtier (7, 8) de blindage, une résistance (11a, 11b) de commutation étant disposée à l'intérieur du boîtier (7, 8) de blindage.
  7. Dispositif de commutation électrique suivant la revendication 2 ou 3,
    caractérisé en ce que
    le premier et le deuxième point (5, 6) de commutation sont chacun entourés d'un boîtier (7, 8) de blindage, une résistance (11a, 11b) de commutation étant disposée à l'intérieur du boîtier (7, 8) de blindage.
  8. Dispositif de commutation électrique suivant l'une des revendications 4 à 7,
    caractérisé en ce que
    un boîtier (7, 8) de blindage est un récipient tenant la pression.
  9. Dispositif de commutation électrique suivant l'une des revendications 4 à 8,
    caractérisé en ce que
    un boîtier (7, 8) de blindage est rempli d'un fluide électriquement isolant.
EP18704417.7A 2017-02-21 2018-01-22 Dispositif de commutation électrique Active EP3559966B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017202739.8A DE102017202739A1 (de) 2017-02-21 2017-02-21 Elektrische Schalteinrichtung
PCT/EP2018/051377 WO2018153582A1 (fr) 2017-02-21 2018-01-22 Dispositif de commutation électrique

Publications (3)

Publication Number Publication Date
EP3559966A1 EP3559966A1 (fr) 2019-10-30
EP3559966C0 EP3559966C0 (fr) 2024-11-27
EP3559966B1 true EP3559966B1 (fr) 2024-11-27

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EP18704417.7A Active EP3559966B1 (fr) 2017-02-21 2018-01-22 Dispositif de commutation électrique

Country Status (5)

Country Link
EP (1) EP3559966B1 (fr)
CN (1) CN110313046B (fr)
BR (1) BR112019015398B1 (fr)
DE (1) DE102017202739A1 (fr)
WO (1) WO2018153582A1 (fr)

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Publication number Priority date Publication date Assignee Title
SE357094B (fr) * 1971-09-27 1973-06-12 Asea Ab
US5629666A (en) * 1994-05-23 1997-05-13 Kabushiki Kaisha Toshiba Power resistor, method of manufacturing the same, and power circuit breaker

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BR112019015398B1 (pt) 2024-01-16
EP3559966C0 (fr) 2024-11-27
EP3559966A1 (fr) 2019-10-30
DE102017202739A1 (de) 2018-08-23
CN110313046A (zh) 2019-10-08
WO2018153582A1 (fr) 2018-08-30
BR112019015398A2 (pt) 2020-03-31
CN110313046B (zh) 2021-07-23

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