EP3827457A1 - Circuit breaker - Google Patents
Circuit breakerInfo
- Publication number
- EP3827457A1 EP3827457A1 EP19774060.8A EP19774060A EP3827457A1 EP 3827457 A1 EP3827457 A1 EP 3827457A1 EP 19774060 A EP19774060 A EP 19774060A EP 3827457 A1 EP3827457 A1 EP 3827457A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum tubes
- circuit breaker
- actuating element
- movable
- housing
- 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
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6664—Operating arrangements with pivoting movable contact structure
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H2033/6667—Details concerning lever type driving rod arrangements
Definitions
- the invention relates to a circuit breaker for breakable connection of at least two line sections, comprising at least a pair of vacuum tubes, each comprising a fixed switching contact and a movable switching contact, the switching contacts of the at least egg pair of vacuum tubes are electrically connected in series.
- vacuum tubes as power switching elements enables the realization of climate-neutral switchgear, especially when combined with housings that are filled with dehumidified air as an insulation medium, since there is no need for insulation gases such as sulfur hexafluoride.
- the vacuum tubes are usually installed horizontally or vertically in the housings with the moving contact at the bottom.
- the use of vacuum tubes as switching elements for high-voltage and extra-high-voltage applications can make it necessary to connect several vacuum tubes in series to ensure the voltage stability of the circuit breaker.
- the use of vacuum tubes in circuit breakers has the advantage over other switch types, such as gas circuit breakers, that the vacuum tubes can be operated essentially without maintenance.
- the use of vacuum tubes in circuit breakers is already known in the prior art.
- a bushing for the electrically conductive connection of two conductor sections through a wall of a housing is specified.
- the implementation comprises a vacuum tube in which the conductor sections are electrically insulated against encapsulation of the vacuum tube and through the encapsulation also against the housing.
- the two conductor sections can be electrically separated by switching the vacuum tube.
- DE 10 2016 218 355 A1 discloses a cable sleeve arrangement for electrical power supply, in which a switch unit which can be switched by means of a drive unit is arranged within a cable sleeve between two electrical line sections of an electrical line of a phase of an electrical cable.
- the interrupter unit can be designed as a vacuum tube with a fixed and a movable contact.
- the invention has for its object to provide an improved circuit breaker with at least two switchable vacuum tubes Ren.
- the invention provides that the movable switching contacts of the vacuum tubes are coupled to a common actuator and can be switched simultaneously by a movement of the actuator.
- the advantage of the solution according to the invention is that the switching of the movable switching contacts of the vacuum tubes can be dispensed with by several separate drive units, which have to be synchronized in order to simultaneously switch the at least two vacuum tubes.
- the coupling of the movable switching contacts of the vacuum tubes to the actuator can take place, for example, by means of a movement mechanism that is comparatively easy to implement, so that the space requirement of the circuit breaker and its construction expenditure can advantageously be reduced.
- the switching contacts of the pair of vacuum tubes are connected in series in the closed state of the switching contacts and the two line sections are electrically connected.
- the fixed switching contacts of the vacuum tubes are preferably each electrically connected to one of the interruptible line sections.
- the movable switch contacts switch the vacuum tube and thus the connection between the line sections when it is moved by a movement of the actuator itself and the physical contact between the fixed switch contact and the movable switch contact of a vacuum tube is interrupted.
- the movable GmbH contacts of both vacuum tubes of a pair of vacuum tubes are electrically connected to each other to form the series connection. This can be done, for example, in that the movable switching contacts are each connected via a slip contact to a conductor of the circuit breaker, the switching contacts being electrically connected to one another via the conductor, at least in the closed state of the vacuum tubes. In this way, when the vacuum tubes are closed, a current flow is achieved between the two line sections which are separably connected by the circuit breaker.
- the stationary switch contact and the movable switch contact of the vacuum tubes are at least partially accommodated in an evacuated capsule, in particular a contact surface between the stationary switch contact and the movable switch contact when the vacuum tube is closed within the evacuated capsule, that is to say within the vacuum in the capsule, lies. Due to the arrangement of the contact surface in the vacuum, it is possible to switch high voltages with the vacuum tube and in particular with a series connection of two vacuum tubes.
- the circuit breaker can be designed, for example, for switching voltages of 245 kV and higher, but also for lower voltages, for example in a range from 10 kV to 170 kV or in a range from 170 kV to 245 kV.
- the movable switching contacts are coupled to the actuator via a common actuating element.
- a common actuator element simultaneous switching of the movable switching contacts of the vacuum tubes can be achieved in a simple manner.
- the control element can be moved such that due to the coupling between the movable switch contacts and the control element, the movable switch contacts move such that they are moved from a closed position to an open position.
- the control element can be a rotating shaft, in particular a crankshaft, or a linearly movable control element.
- the design of the actuating element as a shaft, in particular as a crankshaft, or as a linearly movable actuating element makes it possible to implement switching of the vacuum tubes or moving of the movable switching contacts with a mechanism that is as simple to implement as possible.
- a rotating shaft such as a crankshaft, or a linear one movable actuating element a simultaneous and in particular also rapid movement of the movable switching contacts can be achieved.
- the movable switching contacts of the vacuum tubes are each coupled to the actuating element via a connecting rod.
- Each of the connecting rods can be mounted, for example, via a rotary bearing on the movable switching contact assigned to them and via a further rotary bearing on the actuating element.
- control element and / or the connecting rods are made of an electrically insulating material, in particular a glass fiber reinforced plastic and / or a Kevlar reinforced plastic.
- the vacuum tubes of the at least one pair of vacuum tubes are arranged at an angle to one another in such a way that the movable switching contacts are directed to and coupled to the actuating element, the actuating element being arranged between the vacuum tubes is.
- the vacuum tubes can be arranged in a V arrangement, similar to the cylinders in a V-type internal combustion engine.
- the movable switching contacts can be directed downwards and coupled to an adjusting element, which is arranged in particular centrally between the vacuum tubes.
- the vacuum tubes can be arranged in the same position with respect to a longitudinal direction of the actuating element or it can be provided that the vacuum tubes are slightly offset from one another in the longitudinal direction of the actuating element in order to simplify the coupling of the movable switching contacts to the actuating element.
- the circuit breaker comprises three pairs of vacuum tubes, the switching contacts of the vacuum tubes of each pair being electrically connected in series with two line sections in each case, and the pairs being spaced apart from one another in a longitudinal direction of the actuating element, the actuating element also the movable switching contacts of the vacuum tubes of the three pairs is coupled.
- the circuit breaker to switch three separate phases simultaneously in a three-phase system.
- Each pair of vacuum tubes is assigned to two line sections of a phase, so that a total of three different phases can be switched via the three pairs of vacuum tubes.
- the control element is coupled to the movable switching contacts of all vacuum tubes, so that the three phases or the six vacuum tubes can be switched simultaneously by a movement of the actuator.
- the spaced arrangement of the pairs in the longitudinal direction of the actuating element achieves a space-saving construction of the circuit breaker which can be switched by a simple and robust mechanism.
- the actuator is an electric motor.
- the electric motor for example, a rotary movement of the actuating element, in particular an actuating element designed as a shaft or as a crankshaft, can be sufficient. It is also possible for a rotary movement of the electric motor to be converted into a linear movement of an adjusting element designed as a linear adjusting element, or for the electric motor to be a linear motor which can directly generate a linear movement of a linear adjusting element.
- the vacuum tubes are arranged in a common housing, in particular in a dead tank circuit breaker housing or a life tank circuit breaker housing.
- the housing is at a ground potential.
- the housing is insulated from the outside.
- the housing of the circuit breaker can with an insulating protective gas, for. B. with dehumidified air, also known as clean air, or another protective gas, for. B. sulfur hexafluoride.
- the housing protects the vacuum tubes from external influences and also serves to shield the high-voltage switching contacts of the vacuum tubes, particularly in the closed state, from their surroundings.
- the actuator and / or a mechanism for coupling the movable switch contacts to the actuator can also be accommodated in the housing.
- the actuator is located outside the housing and, for example, a movement mechanism for implementing the coupling between the movable switching contacts and the actuator is partially guided through the housing.
- the vacuum tubes are each arranged in a bushing through which one of the line sections is guided into the housing.
- the vacuum tubes can also be used to isolate the leadthroughs, so that overall the structure of the circuit breaker can be simplified and implemented in a space-saving manner.
- the bushings can be arranged at an angle to one another in a housing cover of the housing, the actuating element being arranged between and below the bushings.
- the vacuum tubes it is also possible to arrange the vacuum tubes at an angle to one another, so that, as described above, a V arrangement of the vacuum tubes is also possible when they are integrated into the bushings.
- FIG. 1 is a representation of a first embodiment of a circuit breaker according to the invention
- FIG. 3 shows a first exemplary embodiment of a movement mechanism of a circuit breaker according to the invention
- Fig. 4 shows a second embodiment of a mechanical movement mechanism of a circuit breaker according to the invention.
- Fig. 5 shows a second embodiment of a circuit breaker according to the invention.
- FIG. 1 is a schematic representation of a first exemplary embodiment from a circuit breaker 1 according to the invention is shown.
- the circuit breaker 1 according to the invention comprises a housing 2, two bushings 4 being arranged at an angle to one another in a housing cover 3 of the housing 2.
- a vacuum tube 5 of a pair of vacuum tubes 5 is arranged.
- the vacuum tubes 5 each comprise a stationary switching contact 6 and a movable switching contact 7, the stationary switching contact 6 being connected to a line section 9 via an electrical connection 8.
- the structure of a vacuum tube 5 will be explained in more detail below with reference to FIG. 2.
- the pair of vacuum tubes 5 is used for interruptible connec tion of the two line sections 9.
- the two be movable switch contacts 7 are each electrically connected via a sliding contact with a conductor 10, so that at least in the closed or in the conductive state of the vacuum tubes 5, the movable switch contacts 7 of the vacuum tubes 5 are electrically connected to one another.
- the switch contacts 6, 7 are closed, that is to say when the circuit breaker 1 is closed, the line sections 9 are electrically connected to one another.
- the movable switching contacts 7 are connected via a movement mechanism 11 comprising an actuating element 12 to an actuator 13.
- a movement mechanism 11 comprising an actuating element 12 to an actuator 13.
- the be movable switch contacts 7 of the vacuum tubes 5 can be switched simultaneously ge.
- Closed switching contacts 6, 7, that is, conductive vacuum tubes 5, can be switched simultaneously by moving the actuator 13 from the closed to the open position by moving the movable switching contacts 7.
- the movable switch contacts 7 can be brought from the open, that is to say the blocking position, into the closed position by a further movement of the actuator 13, in particular in the opposite direction of movement. In this way, the connection between the line sections 9 can be interrupted or an interrupted connection can be reconnected.
- the integration of the vacuum tubes 5 into the bushings 4 of the housing 2 enables a space-saving arrangement of the vacuum tubes 5 within the housing 2. Furthermore, the arrangement of the vacuum tubes 5 at an angle to each other, that is, a V-arrangement of the vacuum tubes, a simple implementation of a simultaneous switching of the vacuum tubes Ren 5 via the actuator 12 and the actuator 13th
- the housing 2 can be, for example, a dead tank circuit breaker housing which is connected to a ground tial lies, act.
- the housing 2 can also be a life-tank circuit breaker housing which is insulated from the outside. In the example shown here, it is a dead tank circuit breaker housing, the line sections 9 of the housing 2 in addition to the schematically drawn ceramic insulators
- the interior 15 of the housing 2 can also be filled with an insulation gas for insulation, for example with dehumidified air or sulfur hexafluride.
- FIG. 2 is a schematic sectional view of a vacuum tube 5 is shown.
- the vacuum tube 5 comprises an airtight capsule 16, which consists of an insulating material and the interior 15 of which is evacuated. Both the fixed con clock 6 and the movable contact 7 are guided into the interior 15 of the capsule 16. For sealing the vacuum inside
- Switching contact 6 and the movable switching contact 7 are interrupted by moving the moving switching contact 7 away from the fixed switching contact 6.
- the area of the contact sections 19 is partially surrounded by a shield 20 made of an electrically conductive material, which serves to shape an electrical field formed in the interior 15 of the capsule 16 and to limit the spread of evaporated metallic material of the switching contacts 6, 7 is used in the switching operations.
- the fixed switch contact 6 of a first vacuum tube 5 via the electrical connection 8 to a line section 9 and the movable switch contact 7 via the conductor 10 with the movable switch contact 7 be a second vacuum tube 5 be the , wherein the stationary switching contact 6 of the second Va vacuum tube 5 is also connected to a line section 9 to be connected.
- a series circuit of the vacuum tubes 5 is realized, which makes it possible to realize a switchable connection between two line sections 9, the voltage level of which lies above the rated voltage of a single one of the vacuum tubes 5.
- a first embodiment of a movement mechanism 11 for switching the vacuum tubes 5 is shown. Since the actuating element 12 is designed as a crankshaft, which is coupled via a connecting rod 21 to the movable contacts 7 of the vacuum tubes 5 arranged in a V arrangement. The connecting rods 21 are fastened to the movable switch contacts 7 and to the crankshaft via a respective pivot bearing 22.
- the actuating element 12 can be rotated in the direction of the arrow 23 by the actuator 13, which is designed, for example, as an electric motor.
- the actuator 13 which is designed, for example, as an electric motor.
- the movable switching contacts 7 are spaced apart from the stationary switching contacts 6 and the switching contacts 6, 7 are thus opened.
- the stationary switching contacts 7 can move towards the stationary switching contacts 6, so that the switching contacts 6, 7 can be closed and the vacuum tubes 5 can thus be switched to be electrically conductive.
- a second embodiment of the movement mechanism 11 of a circuit breaker 1 according to the invention is provided.
- the control element 12 is designed as a linearly movable actuating element, with which the movable switching contacts 7 of the vacuum tubes 5 are coupled as described above, each via a connecting rod 21 and two rotary bearings 22.
- the linearly movable actuator element 12 is mounted in a guide 24 and coupled to the actuator 13 (not shown in FIG. 4), for example an electric linear motor.
- the linearly movable actuator 12 can be moved in the guide in Rich direction of the arrow 25 to open the switch contacts 6, 7 by moving the movable switch contacts 7. Closing of the switching contacts 6, 7 can accordingly take place by moving the linearly movable actuating element 12 against the direction of the arrow 25, so that the movable switching contacts 7 are moved back into contact with the fixed switching contacts 6.
- the circuit breaker 1 shows a second embodiment of a circuit breaker 1 according to the invention.
- the circuit breaker 1 comprises three pairs 26 each of two vacuum tubes 5, which are arranged ver along a longitudinal direction of the actuating element 12.
- Each of the pairs 26 of the vacuum tubes 5 serves for the switchable connection of two line sections 9. Due to the use of three pairs 26 of vacuum tubes 5, the circuit breaker 1 makes it possible to switch electrical connections in a three-phase power system, each pair 26 of the vacuum tubes 5 each having one Phase switches.
- the movable switching contacts 7 are coupled via the connecting rods 21 and the rotary bearings 22 to the actuating element 12.
- the movement mechanism can be designed in accordance with the exemplary embodiments shown in FIG. 3 or 4. By moving the actuator 13, all the movable switching contacts 7 of the pairs 26 of vacuum tubes 5 can be moved simultaneously, so that all three phases can be switched simultaneously by the circuit breaker 1.
- the movable switch contacts 7 of a pair 26 of vacuum tubes 5, for example each via egg NEN conductor 10 as previously shown in FIG. 1, are conductively connected, so that the two line sections 9, which are electrically connected to the vacuum tubes 5 of a pair 26, depending on the switching state of the vacuum tubes 5 are electrically connected or electrically separated.
- Va vacuum tubes 5 can also each be arranged in a V-arrangement, as described above, in the execution of a circuit breaker with three pairs 26 of vacuum tubes 5. Additionally or alternatively, it is possible that the vacuum tubes 5 are each arranged in a bushing 4 in the housing ceiling 3 of a housing 2 of the circuit breaker 1, so that an overall compact structure is also achieved for the circuit breaker 1 for switching three-phase current.
- the actuator 13 is located outside the housing 2, the actuating element 12 being guided through an outer wall of the housing 2 and being connected to the actuator 13. Of course, it is also possible for the actuator 13 to be arranged inside the housing 2.
- the actuating element 12, or the crankshaft or the linearly movable actuating element, and the connecting rods 21 are made of an insulating material such as a glass fiber reinforced plastic or a Kevlar reinforced one Plastic. In this way, a current flow through the movement mechanism 11 or the control element 12 to the actuator 13 is prevented even when the circuit breaker 1 is closed.
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018215507.0A DE102018215507A1 (en) | 2018-09-12 | 2018-09-12 | Circuit breaker |
PCT/EP2019/073668 WO2020053056A1 (en) | 2018-09-12 | 2019-09-05 | Circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3827457A1 true EP3827457A1 (en) | 2021-06-02 |
Family
ID=68066769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19774060.8A Pending EP3827457A1 (en) | 2018-09-12 | 2019-09-05 | Circuit breaker |
Country Status (5)
Country | Link |
---|---|
US (1) | US11710611B2 (en) |
EP (1) | EP3827457A1 (en) |
CN (1) | CN112840428A (en) |
DE (1) | DE102018215507A1 (en) |
WO (1) | WO2020053056A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019204441A1 (en) | 2019-03-29 | 2020-10-01 | Siemens Aktiengesellschaft | High voltage circuit breaker system |
WO2022060888A1 (en) | 2020-09-16 | 2022-03-24 | Perfect Site LLC | Utility rack |
CN114783813A (en) * | 2021-12-23 | 2022-07-22 | 平高集团有限公司 | Double-break isolating switch |
DE102022210985A1 (en) | 2022-10-18 | 2024-04-18 | Siemens Energy Global GmbH & Co. KG | Base module for high-voltage switchgear with vacuum interrupters and high-voltage switchgear with the base module |
CN117373863B (en) * | 2023-12-04 | 2024-03-29 | 昇辉新能源有限公司 | Circuit breaker switch |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527910A (en) * | 1968-04-25 | 1970-09-08 | Gen Electric | Polyphase vacuum type circuit breaker |
CH477081A (en) | 1968-06-13 | 1969-08-15 | Gardy Particip App | Switching device comprising at least one vacuum contact bulb |
US3597556A (en) * | 1970-01-16 | 1971-08-03 | Gen Electric | Vacuum-type circuit breaker with force-supplementing means for increasing current-carrying abilities |
US3792213A (en) * | 1970-10-30 | 1974-02-12 | Westinghouse Electric Corp | High-voltage circuit interrupter incorporating series vacuum interrupter elements |
US4457063A (en) * | 1980-10-08 | 1984-07-03 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co. Kg | Method of making a high tensile connection for overhead power lines |
US4492835A (en) * | 1982-07-08 | 1985-01-08 | Turner Electric Corporation | Load interrupter device |
DE3300979A1 (en) * | 1983-01-12 | 1984-07-12 | Siemens AG, 1000 Berlin und 8000 München | VACUUM SWITCH WITH TWO SWITCHING TUBES PER POL |
JPH07322432A (en) * | 1994-05-25 | 1995-12-08 | Mitsubishi Electric Corp | Gas-insulated switchgear and its switch unit |
DE10325683B3 (en) * | 2003-06-02 | 2004-12-09 | Siemens Ag | Disconnecting switch arrangement |
DE102004006062A1 (en) * | 2004-01-30 | 2005-08-18 | Siemens Ag | Compressed gas-insulated switching device |
US8174812B2 (en) * | 2007-08-18 | 2012-05-08 | Ema Electromechanics, Llc | Mechanically interlocked transfer switch |
FR2923661B1 (en) * | 2007-11-13 | 2010-04-30 | Areva T & D Sa | SWITCHING APPARATUS WITH CIRCUIT BREAKER AND DISCONNECT AND COMPRISING COMMON TRAINING MEANS |
PL2330609T3 (en) * | 2009-12-04 | 2012-12-31 | Abb Technology Ag | Magnetic actuator unit for a circuit-braker arrangement |
EP2568493B1 (en) * | 2011-09-06 | 2015-12-16 | ABB Research Ltd. | High-Voltage switching device |
WO2013154889A1 (en) * | 2012-04-13 | 2013-10-17 | Abb Technology Ag | Self-contained link module for gang-style high voltage dead tank breakers |
WO2014075739A1 (en) * | 2012-11-19 | 2014-05-22 | Abb Technology Ag | High-voltage switching device |
JP6044645B2 (en) * | 2015-01-07 | 2016-12-14 | 株式会社明電舎 | Vacuum circuit breaker |
DE102015212826A1 (en) | 2015-07-09 | 2017-01-12 | Siemens Aktiengesellschaft | Enclosed electrical feedthrough |
DE102015217410A1 (en) * | 2015-09-11 | 2017-03-16 | Siemens Aktiengesellschaft | Transmission device for coupling or decoupling a pole of an electrical switching device for low, medium or high voltage |
DE102016218355A1 (en) | 2016-09-23 | 2018-03-29 | Siemens Aktiengesellschaft | Interruptable cable sleeve arrangement |
CN206282746U (en) * | 2016-12-14 | 2017-06-27 | 浙江腾龙电器有限公司 | A kind of bar shaped composite vacuum load ratio bridging switch |
-
2018
- 2018-09-12 DE DE102018215507.0A patent/DE102018215507A1/en active Pending
-
2019
- 2019-09-05 CN CN201980066764.1A patent/CN112840428A/en active Pending
- 2019-09-05 US US17/275,784 patent/US11710611B2/en active Active
- 2019-09-05 WO PCT/EP2019/073668 patent/WO2020053056A1/en unknown
- 2019-09-05 EP EP19774060.8A patent/EP3827457A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US11710611B2 (en) | 2023-07-25 |
US20220216021A1 (en) | 2022-07-07 |
DE102018215507A1 (en) | 2020-03-12 |
CN112840428A (en) | 2021-05-25 |
WO2020053056A1 (en) | 2020-03-19 |
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