EP3657524B1 - Elektrischer schalter und schaltanlage - Google Patents

Elektrischer schalter und schaltanlage Download PDF

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Publication number
EP3657524B1
EP3657524B1 EP19210897.5A EP19210897A EP3657524B1 EP 3657524 B1 EP3657524 B1 EP 3657524B1 EP 19210897 A EP19210897 A EP 19210897A EP 3657524 B1 EP3657524 B1 EP 3657524B1
Authority
EP
European Patent Office
Prior art keywords
relay
electrical switch
assembly
circuit board
control
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.)
Active
Application number
EP19210897.5A
Other languages
English (en)
French (fr)
Other versions
EP3657524A1 (de
Inventor
Simon Tian
Fenglian ZHANG
Claude Burnot
Qiwei XUE
Xiaolei Guo
Hanyi LIU
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3657524A1 publication Critical patent/EP3657524A1/de
Application granted granted Critical
Publication of EP3657524B1 publication Critical patent/EP3657524B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/047—Details concerning mounting a relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H2050/049—Assembling or mounting multiple relays in one common housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together
    • H01H2071/0278—Mounting several complete assembled circuit breakers together with at least one of juxtaposed casings dedicated to an auxiliary device, e.g. for undervoltage or shunt trip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H01H2071/086—Low power connections for auxiliary switches, e.g. shunt trip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/021—Bases; Casings; Covers structurally combining a relay and an electronic component, e.g. varistor, RC circuit

Definitions

  • the present disclosure relates to an electrical switch, and more specifically to an electrical switch and a switchgear including the same.
  • Electrical switches such as contactors are widely used on a variety of power distribution and power use applications. Typically, electrical switches such as contactors achieve the purpose of turning the circuit on and off by controlling contacts to close or open. In order to achieve such control, peripheral control elements need to be provided. In addition, in general applications, electrical switches such as contactors need to be able to meet needs in local control and remote control.
  • EP 2 731 121 A2 relates to a modular overload relay assembly which comprises a sensing module accommodated in a first housing, a controller module accommodated in a second housing and a communication module accommodated in a third housing.
  • the communication module may be a wireless communication module.
  • the housing of the sensing module supports integrated phase current conductors and load side power terminals.
  • the integrated phase current conductors of the sensing module conduct load current from a contactor through the modular overload relay assembly to load side power terminals.
  • the modular overload relay assembly acts as an intermediate component between a contactor and an electrical line.
  • CN 108717919 A is directed at a contactor with intelligent control.
  • the contactor comprises a controller compartment and a contactor compartment.
  • the controller compartment comprises a control circuit board with a switch module and an action module.
  • the switch module may be a wireless unit.
  • the action module may be formed as a relay and is connected to a coil of a contactor body which realizes a circuit connection.
  • the action module in form of a relay is an intermediate component for controlling the contactor body.
  • EP 3 357 786 A2 discloses a safety relay which may be associated with a switch associated with a transmitter and/or receiver for wireless communication.
  • US 2010/070100 A1 discloses wireless systems for controlling items such as motors found in HVAC systems or water supply and distribution systems, machines found in factories, and light fixtures found in and around buildings or dwellings.
  • embodiments of the present disclosure provide an electrical switch, and a switchgear including the same.
  • an electrical switch used as a contactor.
  • the electrical switch comprises: a housing; a relay assembly arranged within the housing and configured to directly turn on and off a circuit connected to the electrical switch, the relay assembly comprising a first relay; and a control assembly arranged in parallel with the relay assembly in the same housing, the control assembly being configured to control the relay assembly, and the control assembly comprising a wireless communication unit configured to receive signals to remotely control the relay assembly.
  • a two-module contactor with a control module is integrated into a single module by replacing the contactor's switching device with a smaller relay and using wireless communication to remotely control the relay.
  • the overall volume of the electrical switch of the present disclosure is significantly reduced and its structure is more compact compared to conventional contactors.
  • the structure of the single module also reduces the distance between the control assembly and the switching device, which also simplifies wiring. In some cases, a compact single-module electrical switch can be more easily mounted directly on the circuit breaker.
  • control assembly is opposite to a first side of a plurality of sides of the first relay, the plurality of sides defining a thickness of the first relay.
  • the electrical switch further comprises: an incoming wire and outgoing wire assembly arranged in parallel with the relay assembly in the housing, the incoming wire and outgoing wire assembly being opposite to a second side of the plurality of sides of the first relay and configured to electrically connect electrical terminals disposed on the second side with an external circuit. It is possible to, by arranging the incoming wire and outgoing wire assembly on the side of the relay provided with electrical terminals, make the incoming wire terminal and outgoing wire terminal close to the electrical terminals of the relay, reduce the required wiring, and refrain from increasing the overall thickness of the electrical switch.
  • control assembly comprises a control terminal unit configured to connect a switching device external to the electrical switch to enable control of the relay assembly by the switching device.
  • the relay in addition to being remotely controlled, the relay may be controlled by the external switch connected to the control terminal, whereby more control options are provided.
  • At least one of the control terminal unit and the housing is provided with a notch for accommodating a copper bus bar.
  • the electrical switch may avoid touching the copper bus bar connected to the circuit breaker, which facilitates the installation and insulation of the electrical switch.
  • the control assembly comprises: a first circuit board and a second circuit board arranged opposite to each other, board faces of the first circuit board and the second circuit board being substantially perpendicular to the first side of the first relay, to carry other elements in the control assembly. It is possible to, by providing dual circuit boards, reduce the area occupied in the plane perpendicular to the thickness direction while maintaining a large overall area of the circuit board, thereby ensuring that enough electrical and electronic elements can be carried, which improves space utilization within the module. In addition, the circuit board can be completely placed on the side of the relay without increasing the thickness of the electrical switch.
  • the relay assembly further comprises: a second relay, the second relay and the first relay being arranged adjacent to each other.
  • the electrical switch employing dual relays may be used not only to control single-phase power supply but also to control two-phase power supply.
  • the first relay and the second relay are arranged along a length direction of the first relay and the second relay. With this arrangement, less side space may be occupied when the electrical switch is mounted to the circuit breaker.
  • the electrical switch further comprises: an incoming wire and outgoing wire assembly forming an L-shape with the relay assembly and configured to electrically connect electrical terminals on the relay assembly to an external circuit, the incoming wire and outgoing wire assembly comprising an incoming wire terminal and an outgoing wire terminal, the incoming wire terminal facing an inner side of the L shape and configured to be electrically connected to the circuit breaker in an inserted manner.
  • the control assembly comprises: a first circuit board, a second circuit board and a third circuit board, configured to carry other elements in the control assembly, the first circuit board and the second circuit board being arranged on one side of the L-shape provided with the relay assembly, and the third circuit board being arranged on the other side of the L-shape provided with the incoming wire and outgoing wire assembly.
  • a plurality of circuit boards may be used to carry electrical and electronic elements for controlling the relays, and by properly arranging the circuit boards, the structure of the electrical switch may be made more compact.
  • the first relay and the second relay are arranged along a thickness direction of the first relay and the second relay.
  • a square-shaped electrical switch may be formed to integrally mount the electrical switch on the front side of the circuit breaker.
  • the electrical switch further comprises: an incoming wire and outgoing wire assembly being opposite to the side of the relay assembly provided with electrical terminals and configured to connect the electrical terminals on the relay assembly to an external circuit, the incoming wire and outgoing wire assembly comprising an incoming wire terminal and an outgoing wire terminal, the incoming wire terminal being configured to be electrically connected to the circuit breaker in an inserted manner.
  • control assembly comprises: a first circuit board, a second circuit board and a third circuit board, configured to carry other elements in the control assembly, and arrranged together with the incoming wire and outgoing wire assembly on the same side of the relay assembly. This arrangement manner may further effectively improve wiring efficiency and space utilization.
  • the third circuit board comprises a through hole allowing the incoming wire terminal or the outgoing wire terminal to pass therethrough, so as to sense the current on the incoming wire terminal or the outgoing wire terminal by the third circuit board.
  • the circuit board may be arranged with space near the incoming wire and outgoing wire assembly, and the current is sensed by a current sensor provided on the third circuit board.
  • the wireless communication unit is configured to communicate in a Zigbee manner. In this way, the wireless communication has advantages of simplicity, efficiency and low cost.
  • control assembly comprises a button that is operable by a user to control the relay assembly.
  • a control option for the user to directly operate the relay is provided.
  • control assembly comprises: a metering unit configured to measure at least one of an electrical parameter and a temperature parameter of the electrical switch; and a diagnostic unit configured to determine an ON/OFF state of the electrical switch.
  • a switchgear which comprises the electrical switch described above.
  • the switchgear including the above electrical switch can be adapted to control various loads, especially low-current loads that do not require frequent switching.
  • the term “comprises” and its variants are to be read as open-ended terms that mean “comprises, but is not limited to.”
  • the term “or” is to be read as “and/or” unless the context clearly indicates otherwise.
  • the term “based on” is to be read as “based at least in part on.”
  • the term “one example embodiment” and “an example embodiment” are to be read as “at least one example embodiment.”
  • the term “another embodiment” is to be read as “at least one other embodiment.” Terms “a first”, “a second” and others can denote different or identical objects. The following text may also contain other explicit or implicit definitions.
  • FIG. 1 shows an external perspective view of a conventional contactor apparatus 100'.
  • the contactor apparatus 100' comprises a contactor module 101' and a controller module 102'.
  • the contactor module 101' and the controller module 102' are combined together by splicing.
  • a control assembly in controller module 102' may control a contactor assembly in the contactor module 101'.
  • FIG. 2 further shows an internal perspective view of a conventional contactor apparatus 100' after removal of a portion of a housing.
  • a body of a conventional contactor is large in size, and already occupies most of the space within the housing of the contactor module 101'.
  • the controller module 102' employs a wired communication mode, and a large amount of space is reserved for the purpose of insulation and wiring.
  • a circuit board of the controller module 102' is a single circuit board, all components are disposed flat on the circuit board, and the space utilization efficiency is low. Therefore, the large size and complicated wiring of the contactor module 100' result in requiring more installation space and more workload for wiring, and higher insulation requirements. This type of contactor is not practical for some low-current, low-load occasions.
  • the present disclosure proposes a novel electrical switch.
  • the electrical switch replaces the conventional contactor body with a small-sized relay, and the saved space is used to dispose the control assembly.
  • the relay in the electrical switch employs the wireless communication control mode, and greatly reduces the space for insulation and wiring.
  • the present disclosure also optimizes an arrangement mode of the control assembly and incoming and outgoing wire terminals. Thereby, the electrical switch body and peripheral components for controlling the electrical switch body are integrated in a single module.
  • the novel electrical switch proposed by the present disclosure has advantages such as compact structure, simple wiring and more intelligence.
  • FIG. 3 shows an external perspective view of an electrical switch 100 according to an embodiment of the present disclosure.
  • the electrical switch 100 according to an embodiment of the present disclosure is integrated as a single module structure. Compared to the contactor apparatus 100' using dual module shown in FIG. 1 , the electrical switch 100 is simplified in structure and significantly reduced in size.
  • FIG. 4 shows an internal perspective view of the electrical switch 100 after removal of housings 141 and 142 of Fig. 3 according to an embodiment of the present disclosure
  • FIG. 5 shows an exploded view of the electrical switch 100 according to an embodiment of the present disclosure
  • the electrical switch 100 may comprise housings 141 and 142, a relay 110-1, and a control assembly for controlling the relay 110-1.
  • the small-sized relay 110-1 replaces the conventional contactor body, and the relay 110-1 and the control assembly for controlling the relay are combined and installed in the same housing space instead of being disposed in different modules separately.
  • the housing may comprise a first housing 141 and a second housing 142.
  • the first housing 141 and the second housing 142 may be mounted together by a fastening member such as a bolt or in any other fastening manner.
  • the assembled first housing 141 and second housing 142 form a cavity in which the relay 110-1 and associated electrical and electronic elements may be received and secured.
  • the first housing 141 and the second housing 142 may form a closed housing together with an incoming wire and outgoing wire assembly 150 and a control terminal unit 130 of the control assembly, and the incoming wire and outgoing wire assembly 150 and the control terminal unit 130 of the control assembly will be descried in detail later.
  • the first housing 141 and the second housing 142 may also directly form a closed housing to enclose all elements including the incoming wire and outgoing wire assembly 150 and the control terminal unit 130 within the housing.
  • the relay 110-1 may turn on and off the circuit connected to the electrical switch 100, thereby achieving control of the load in the circuit.
  • relay 110-1 may be a bistable relay that may have lower power consumption and be capable of withstanding a certain short circuit current.
  • relay 110-1 may also be a monostable relay or any other type of relay.
  • the above control assembly may comprise any electrical and electronic element needed to control the relay 110-1.
  • the control assembly may be arranged in parallel with the relay 110-1 in the housing, and the control assembly may comprise a wireless communication unit 160 for receiving a signal to remotely control the relay 110-1.
  • the wireless communication unit 160 performs wireless communication in a Zigbee communication manner.
  • the wireless communication unit may also communicate in other wireless communication manners, such as WiFi, Bluetooth, and the like.
  • the wireless communication unit 160 may receive signals to enable remote control of the relay 110-1.
  • the wireless communication such as Zigbee may avoid complicated wiring in the control assembly, and the simplification of the wiring further reduces the insulation requirements, which all make the control assembly need less space.
  • control assembly may further comprise a power supply unit (not shown), a control unit (not shown), circuit boards 121 and 122, and a control terminal unit 130.
  • a power supply unit not shown may provide a power supply to active elements in the control assembly.
  • the control unit not shown may at least comprise a processor (such as a Central Processing Unit CPU, a Digital Signal Processing DSP, a Single-Chip Computer MCU or a Field Programmable Gate Array FPGA, etc.), and the control unit generally controls the control assembly to operate the relay 110-1.
  • the circuit boards 121 and 122 and the control terminal unit 130 will be described in detail later. It will be appreciated that since the remote control is possible, some of the elements in the control assembly may also be arranged at positions remote from the electrical switch 100 in some cases, thereby further reducing the size of the electrical switch 100.
  • control assembly is opposite to a portion of a plurality of sides of the relay 110-1 (shown by reference sign A in FIGS. 5 and 6A ), the plurality of sides defining a thickness of the relay 110-1. Since the relay 110-1 has a small size, excess space can be obtained on the sides of the relay 110-1. Such an arrangement takes full advantage of the remaining space created by the size-reduced relay 110-1 while avoiding an increase in the overall thickness of the integrated electrical switch 100.
  • the control assembly of the electrical switch 100 may comprise circuit boards 121 and 122.
  • the circuit boards 121 and 122 are used to carry other electrical and electronic elements of the control assembly.
  • the circuit boards 121 and 122 may be used to carry at least one of wireless communication unit 160, the power supply unit and the control unit.
  • the circuit boards 121 and 122 may employ a dual circuit board structure, that is, the circuit board comprises a first circuit board 121 and a second circuit board 122.
  • the first circuit board 121 and the second circuit board 122 may be arranged to face each other, and board faces of the first circuit board 121 and the second circuit board 122 are substantially perpendicular to the plurality of sides of the relay 110-1, substantially perpendicular to a thickness direction of the relay 110-1 and extend along the plurality of sides of the relay 110-1.
  • Such an arrangement facilitates reducing the space occupied by the circuit boards in the thickness direction of the electrical switch 100.
  • the wireless communication unit 160 may be arranged for example on the first circuit board 121. However, the wireless communication unit 160 may also be arranged on the second circuit board 122, and the wireless communication unit 160 may also be arranged at any suitable position on the first circuit board 121 or the second circuit board 122.
  • the first circuit board 121 may be provided with the control unit and the wireless communication unit to serve as a control circuit board
  • the second circuit board 122 may be provided with the power supply unit to serve as a power supply circuit board. It may be understood that the electrical and electronic elements of the control unit, the wireless communication unit and the power supply unit may be mixedly arranged on the first circuit board 121 and the second circuit board 122 as needed, thereby not distinguishing the control circuit board and the power supply circuit board.
  • electrical and electronic elements on the first circuit board 121 and the second circuit board 122 may be arranged between the first circuit board 121 and the second circuit board 122.
  • the wireless communication unit 160 may be arranged on an inner board face of the first circuit board 121 adjacent to the second circuit board 122.
  • the wireless communication unit 160 may also be arranged on an inner board face of the second circuit board 122 adjacent to the first circuit board 121.
  • the space between the first circuit board and the second circuit board may be utilized more fully.
  • the electrical and electronic elements on the first circuit board 121 and the second circuit board 122 may also be arranged on outer board faces of the first circuit board 121 and the second circuit board 122 in the case where there is sufficient space.
  • the dual circuit boards 121 and 122 may reduce the area occupied in a plane perpendicular to the thickness direction, but still maintain a large overall area of the board, thereby ensuring that sufficient electrical and electronic elements may be carried.
  • the dual circuit board structure improves the utilization of the space within the housings 141 and 142 as compared to a single circuit board.
  • FIGS. 6A through 6C are schematic views showing the assembling of the first circuit board 121, the second circuit board 122 and the relay 110-1.
  • the first circuit board 121 and the second circuit board 122 each have a substantially L-shaped shape, and the two circuit boards are substantially the same in size and shape.
  • the relay 110-1 has a substantially rectangular parallelepiped shape and has a plurality of sides defining a thickness, and the plurality of sides may comprise a side A and a side B.
  • FIGS. 6A through 6C show a step of placing the first circuit board 121 and the second circuit board 122 on the side A of the relay 110-1.
  • the first circuit board 121 and the second circuit board 122 are placed on the side A of the relay 110-1 where the electrical terminal 111 is not provided.
  • the board faces of the first circuit board 121 and the second circuit board 122 are substantially perpendicular to the side A of the relay 110-1 (or the thickness direction of the relay 110-1), and the L-shaped first circuit board 121 and the second circuit board 122 mate with the side profile of relay 110-1.
  • the arrangement of the L-shaped first circuit board 121 and the second circuit board 122 fully utilizes the side space of the relay 110-1, which facilitates integration of the control assembly and the relay 110-1 into a single module.
  • the electrical switch 100 may also comprise the incoming wire and outgoing wire assembly 150.
  • the incoming wire and outgoing wire assembly 150 is arranged side by side with the relay 110-1 in the housings 141 and 142, the incoming wire and outgoing wire assembly 150 is opposed to another side B of the plurality of sides of the relay 110-1 (see FIGS. 5 and 6A ), and the another side B is provided with an electrical terminal 111 of the relay 110-1.
  • the incoming wire and outgoing wire assembly 150 is configured to electrically connect the electrical terminal 111 disposed on the side B with an external circuit.
  • the incoming wire and outgoing wire assembly 150 is arranged on the side B of the relay 110-1 to avoid increasing the overall thickness of the electrical switch 100.
  • the incoming wire and outgoing wire assembly 150 comprises an incoming wire terminal, an outgoing wire terminal, and a frame and a bolt for securing the incoming and outgoing wire terminals.
  • the electrical switch 100 of FIGS. 4 and 5 has a structure with two incoming wires and two outgoing wires. However, the electrical switch 100 may also have other numbers of incoming wires and outgoing wires as needed.
  • control assembly of the electrical switch 100 may further comprise a control terminal unit 130.
  • the control terminal unit 130 is configured to connect a switching device external to the electrical switch 100 to enable control of the relay through the external switching device.
  • the control terminal unit 130 at least comprises a control terminal, which enables an external switching device connected to the control terminal to control a control coil of the relay 110-1.
  • the relay 110-1 in the electrical switch 100 may be controlled by an external switch connected to the control terminal unit 130.
  • the control terminal unit 130 may further comprise a frame and a bolt for securing the control terminal.
  • FIG. 7 shows a schematic view of the installation of the electrical switch 100.
  • the control terminal unit 130 may be provided with a notch 131 for accommodating a copper bus bar.
  • the electrical switch 100 and the circuit breaker such as a miniature circuit breaker MCB
  • the copper bus bar connected to the circuit breaker such as the miniature circuit breaker MCB
  • the copper bus bar connected to the circuit breaker has a live wire terminal 201 and a neutral wire terminal 202 which are disposed in a staggered manner.
  • the position of the electrical switch 100 might conflict with the position of one of the live wire terminal 201 and the neutral wire terminal 202 which are disposed in a staggered manner, thereby causing the inability to mount the electrical switch 100 at a suitable position.
  • the notch 131 may be provided on the control terminal unit 130 (for example, its frame).
  • a recessed space may be formed at a position where the electrical switch 100 is adjacent to the copper bus bar to accommodate the terminals of the protruding copper bus bar, so that the electrical switch 100 may avoid the live wire terminal 201 or the neutral wire terminal 202 of the copper bus bar
  • the control assembly of electrical switch 100 may further comprise a button 126.
  • the button 126 can be operated by a user to control the relay 110-1. Specifically, by pressing the button 126, the user may directly control the ON and OFF of the relay 110-1.
  • the housing 142 is provided with a hole for the button 126 through which the button 126 can protrude out of the housing and may be touched by the user.
  • the button 126 provides a control mode in which the user may manually operate the relay directly.
  • the control assembly of the electrical switch 100 is also provided with an indicator light 125 that is capable of indicating a status of the electrical switch 100.
  • the control assembly of electrical switch 100 further comprises a metering unit and a diagnostic unit (not shown).
  • the metering unit may measure at least one of electrical parameter and temperature parameter of the electrical switch 100. Specifically, the metering unit may measure the voltage, current or power of the electrical switch 100 to detect the electrical state of the electrical switch 100. In addition, the metering unit may monitor the heat generation in the electrical switch 100 by measuring the temperature. These measurement results may be provided directly to the user or to other elements for control.
  • the diagnostic unit may determine an on/off state of the electrical switch 100. For example, the diagnosis unit may judge whether the electrical switch 100 successfully performs an opening operation or a closing operation according to the measurement results of the metering unit. Thereby, the control unit of the electrical switch 100 or the user may perform the corresponding operation based on the judgment result of the diagnostic unit.
  • the electrical switch 100 may further be provided with a telescopic stopper 191 and a locking clip 192.
  • the electrical switch 100 may be mounted for example on a DIN guide rail by the telescopic stopper 191 and the locking clip 192.
  • FIG. 8 shows a comparative schematic diagram of the electrical switch 100 and the contactor apparatus 100'.
  • the contactor apparatus 100' is formed by assembling two modules, whereas the electrical switch 100 is of a single module structure.
  • the thickness d of the electrical switch 100 is only half of the thickness d' of the contactor apparatus 100'.
  • the thickness of the electrical switch 100 may also be adjusted according to the needs of the installation. This reduction in thickness is advantageous on some occasions.
  • the novel electrical switch according to an embodiment of the present disclosure effectively saves the installation space.
  • the electrical switch according to an embodiment of the present disclosure since a plurality of functions (such as wireless control, temperature control, and metering) are integrated, the electrical switch according to an embodiment of the present disclosure has simpler wiring and is more intelligent in function, which improves the user's experience.
  • the electrical switch for controlling the load may be directly mounted on the circuit breaker. However, if the size of the electrical switch is too large or multiple modules are needed to form the electrical switch, the reliability of the installation will be reduced.
  • a two-phase power supply system is used. For example, the United States generally employs a 120V two-phase power supply system, and the load might need a supply voltage of 120V, whereupon single-phase power supply may meet the need. However, in more cases, the load might need a supply voltage of 240V. In the case where the load voltage is 240V, the two phases are needed to simultaneously supply power to provide a 240V line voltage. Therefore, in some cases, an electrical switch capable of simultaneously controlling two phases of power supply is also needed. Based on this, with reference to FIGS. 9 through 17 , the present disclosure further provides additional embodiments of the electrical switch 100.
  • FIGS. 9 through 12 illustrate another embodiment of the present disclosure.
  • FIG. 9 shows an external perspective view of an electrical switch 100 according to another embodiment of the present disclosure.
  • the electrical switch 100 is integrated as a single-module structure.
  • the electrical switch 100 shown in FIG. 9 has a compact external structure and a reduced size, and the electrical switch 100 is generally L-shaped so that the electrical switch 100 can be mounted on one side of front side C and lateral side D of the circuit breaker 300 (as shown in FIG. 12 ).
  • FIG. 10 illustrates an internal perspective view of the electrical switch 100 after removal of the housings 141 and 142 of FIG. 9
  • FIG. 11 illustrates an internal exploded view of electrical switch 100 according to another embodiment of the present disclosure (not including the housings 141 and 142).
  • the electrical switch 100 may comprise a control assembly as well as a relay assembly.
  • the relay assembly is mainly composed of a relay, and the relay assembly and the control assembly for controlling the relay assembly are combined and mounted in the same housing space.
  • the housing may comprise a first housing 141 and a second housing 142.
  • the assembled first housing 141 and second housing 142 form a cavity into which the relay assembly and associated electrical and electronic elements may be received and secured.
  • the first housing 141 and the second housing 142 may form a closed housing together with the incoming wire and outgoing wire assembly 150.
  • the first housing 141 and the second housing 142 may also directly form a closed housing to enclose other elements within the housing.
  • the first housing 141 and the second housing 142 assembled together may be generally L-shaped to facilitate mounting the electrical switch 100 laterally on the circuit breaker 300.
  • the specific mounting manner between the housings 141 and 142 is the same as that of the housings of FIG. 3 and will not be described in detail.
  • the relay assembly may at least comprise the relay 110-1.
  • the relay 110-1 may be, for example, a bistable relay.
  • the relay assembly may turn on and off the circuit connected to the electrical switch 100 to achieve control of the load in the circuit.
  • the control assembly for controlling the relay may comprise a wireless communication unit that may receive signals to remotely control the relay assembly.
  • the wireless communication unit may communicate in a Zigbee manner. With the wireless communication manner being employed, the communication wiring within the electrical switch is greatly reduced, thereby also improving the insulation arrangement within the electrical switch, which enables the control assembly and relay assembly to be integrated into a single module.
  • the control assembly may further comprise any electrical and electronic elements needed to control the relay assembly.
  • the control assembly may comprise a power supply unit, a control unit and a circuit board.
  • the relay assembly may further comprise another relay 110-2, and the relay 110-2 and the relay 110-1 are arranged adjacent to each other.
  • the relay 110-2 may be for example a bistable relay.
  • the electrical switch 100 with dual relays may be used to control both single-phase power supply and two-phase power supply. For example, in a 120V two-phase power supply system, when two phases of voltage need to be used to supply power for the 240V load, the two relays in the electrical switch 100 may respectively control one phase line, thereby effectively implementing load control.
  • the number of relays used by the electrical switch 100 may also be one, or more than two (for example, three) depending on the specific needs.
  • the relay 110-1 and relay 110-2 may be arranged along their own length direction. As shown in FIG. 10 , the relay 110-1 and the relay 110-2 are arranged in a line. When the electrical switch 100 is mounted on the circuit breaker 300, the relay assembly including the relay 110-1 and the relay 110-2 will be disposed on the side D of the circuit breaker 300 (as shown in FIG. 12 ). However, the side space of the circuit breaker is usually limited, so such a relay arrangement manner can occupy as little side space as possible on the circuit breaker.
  • the electrical switch 100 further comprises an incoming wire and outgoing wire assembly 150.
  • the incoming wire and outgoing wire assembly 150 is formed in an L shape with the relay assembly, and configured to electrically connect the electrical terminals 111 on the relay assembly to an external circuit.
  • the incoming wire and outgoing wire assembly 150 comprise an incoming wire terminal 153 and an outgoing wire terminal 151.
  • the incoming wire terminal 153 faces the inner side of the L-shape and is configured to be electrically connected to the circuit breaker 300 in an inserted manner.
  • the incoming wire and outgoing wire assembly 150 may comprise two incoming wire terminals 153, two outgoing wire terminals 151, a frame (which comprises terminal strips), and bolts.
  • the frame (which comprises terminal strips) and bolts are used to fix and connect the incoming wire terminal 153 and the outgoing wire terminal 151.
  • One end of the outgoing wire terminal 151 may be connected to the terminal strip on the frame of the incoming wire and outgoing wire assembly 150, and the other end may be connected to the electrical terminal 111 of the relay 110-1 or 110-2.
  • One end of the incoming wire terminal 153 may be connected to the electrical terminal 111 of the relay 110-1 or 110-2, and the other end may protrude out of the housing, so as to be electrically connected to the circuit breaker 300 in an inserted manner.
  • a relay may correspond to one incoming wire terminal and one outgoing wire terminal such that each relay of the relay assembly may be electrically connected to the external circuit to implement control function. It will be appreciated that other numbers of the incoming wire terminal and outgoing wire terminal may be selected as needed, and the frame and bolts may be omitted as needed or their functions may be achieved in other manners.
  • the incoming wire and outgoing wire assembly 150 and the relay assembly are arranged in an L-shape such that when the electrical switch 100 is mounted to the circuit breaker 300, the incoming wire and outgoing wire assembly 150 is disposed on the front side C of the circuit breaker 300 (as shown in FIG. 12 ). Such an arrangement no longer occupies more space on the side D of the circuit breaker 300 and better facilitates electrical connection between the electrical switch 100 and the circuit breaker 300.
  • the above control assembly may comprise a first circuit board 121, a second circuit board 122 and a third circuit board 123.
  • the first circuit board 121, the second circuit board 122 and the third circuit board 123 are configured to carry other elements in the control assembly, and the first circuit board 121 and the second circuit board 122 are arranged on a side of the L shape provided with the relay assembly, and the third circuit board 123 is arranged on the other side of the L-shape provided with the incoming wire and outgoing wire assembly 150.
  • the first circuit board 121, the second circuit board 122 and the third circuit board 123 may carry, for example, at least one of a wireless communication unit, a control unit or a power supply unit.
  • the first circuit board 121 and the second circuit board 122 are arranged adjacent to the relay assembly. Similar to the arrangement of the first circuit board and the second circuit board in FIG. 3 , the board faces of the first and second circuit boards 121, 122 are substantially perpendicular to a plurality of sides of the relays 110-1 and 110-2 (they define the thickness of the relay), or substantially perpendicular to the thickness direction of the relays 110-1 and 110-2, and extends along the plurality of sides. Such an arrangement avoids occupation of more side space of the circuit breaker.
  • the third circuit board 123 is arranged together with the incoming wire and outgoing wire assembly 150.
  • the third circuit board 123 may be provided with a through hole 1231 so that the incoming wire terminal 153 passes therethrough.
  • a current sensor may be disposed on the third circuit board 123 so as to sense the current on the incoming wire terminal 153.
  • the first circuit board 121 may be a power supply circuit board
  • the second circuit board 122 may be a control circuit board
  • the third circuit board 123 may be a microcontroller MCU circuit board.
  • electrical and electronic elements of various functions may also be distributed mixedly on the first circuit board 121, the second circuit board 122 and the third circuit board 123 as needed.
  • FIG. 12 shows a perspective view of an electrical switch 100 mounted on a circuit breaker 300 according to another embodiment of the present disclosure.
  • the electrical switch 100 is mounted on the circuit breaker 300.
  • the circuit breaker 300 is surrounded by the L-shaped electrical switch 100 with a portion of the electrical switch 100 located on the side D of the circuit breaker 300 and another portion located on the front side C of the circuit breaker 300.
  • the incoming wire terminal 153 of the electrical switch 100 is inserted into the circuit breaker 300 to effect electrical connection with the circuit breaker 300. Since the relay controlled in the wireless communication manner is used to control the load, the size of the electrical switch 100 is reduced and the structure is simplified, so that the electrical switch 100 can be reliably mounted directly on the circuit breaker 300.
  • the side space of the circuit breaker 300 is usually very limited, and other devices cannot be arranged any longer.
  • the front space of the circuit breaker 300 is relatively abundant. Therefore, in the case where it is necessary to directly mount the electrical switch to the circuit breaker 300, more thought may be given to the front space of the circuit breaker 300.
  • FIGS. 13 through 17 illustrate a further embodiment of the present disclosure.
  • FIG. 13 shows an external perspective view of an electrical switch 100 according to a further embodiment of the present disclosure.
  • the electric switch 100 is formed as a square shape as the whole. Such a configuration enables the electrical switch 100 to be entirely mounted on the front side of the circuit breaker 300 in an inserted manner.
  • FIG. 14 illustrates an internal perspective view of the electrical switch 100 after removal of the housings 141 and 142 of FIG. 13
  • FIG. 15 shows an exploded view of an electrical switch 100 according to a further embodiment of the present disclosure
  • the electrical switch 100 may comprise housings 141 and 142, a control assembly and a relay assembly.
  • the relay assembly may comprise relays 110-1 and 110-2, and the relay assembly and the control assembly for controlling the relay assembly may be combined and mounted in the same housing space.
  • the same portions as the previous embodiment will not be described in detail, and the differences from the previous embodiment will be mainly described.
  • the relay 110-1 and the relay 110-2 comprised in the relay assembly are arranged along their own thickness direction. As shown in FIGS. 14 and 15 , the relay 110-1 and the relay 110-2 may be supported and fixed by an isolation frame 155 located therebetween. In addition, the isolation frame 155 may also support and secure the incoming wire and outgoing wire assembly 150. Thereby, the entirety of the electric switch 100 is formed in a square shape instead of the L shape in the previous embodiment.
  • the electrical switch 100 further comprises the incoming wire and outgoing wire assembly 150.
  • the incoming wire and outgoing wire assembly 150 is opposite to the side of the relay assembly provided with the electrical terminals 111 and is configured to electrically connect the electrical terminals 111 on the relay assembly to an external circuit.
  • the incoming wire and outgoing wire assembly 150 comprises the incoming wire terminal 153 and the outgoing wire terminal 151.
  • the incoming wire terminal 153 is configured to be electrically connected to the circuit breaker 300 in an inserted manner.
  • the incoming wire and outgoing wire assembly 150 may comprise the incoming wire terminal 153 and the outgoing wire terminal 151. Further, the incoming wire and outgoing wire assembly 150 may further comprise a frame (which may comprise a terminal strip) and bolts for fixing and connecting the incoming wire terminal 153 and the outgoing wire terminal 151.
  • FIG. 16 shows an exploded view of partial members of the electrical switch 100 according to a further embodiment of the present disclosure. To more clearly show the connection between the incoming wire and outgoing wire assembly 150 and the relay assembly, the frame and bolts of the incoming wire and outgoing wire assembly 150 are removed from FIG. 16 . As shown in FIG.
  • the incoming wire terminal 153 and the outgoing wire terminal 151 are near the sides of the relays 110-1 and 110-2 provided with the electrical terminals 111, and extend in opposite directions to each other.
  • One end of the outgoing wire terminal 151 is connected to the electrical terminal 111 of the relay 110-1 or 110-2, the other end is connected to the terminal strip on the frame of the incoming wire and outgoing wire assembly 150 (see FIGS. 14 and 15 ), and one end of the incoming wire terminal 153 is connected to the electrical terminal 111 of the relay 110-1 or 110-2, and the other end protrudes out of the housings 141 and 142 for insertion into the circuit breaker 300.
  • the incoming wire and outgoing wire assembly 150 needs to be electrically connected to the electrical terminals 111 of the relay, arranging the incoming wire and outgoing wire assembly 150 in close proximity to the electrical terminals 111 facilitates reducing the space needed by wiring and insulation, such that the electrical switch 100 is smaller in size.
  • the control assembly comprises a first circuit board 121, a second circuit board 122 and a third circuit board 123.
  • the first circuit board 121, the second circuit board 122 and the third circuit board 123 are configured to carry other elements in the control assembly and are arranged on the same side of the relay assembly with the incoming wire and outgoing wire assembly 150.
  • the first and second circuit boards 121, 122 may be arranged opposite to each other.
  • the wireless communication unit may be disposed on the first circuit board 121, and control coils 113 of the relays 110-1 and 110-2 may be connected to the first circuit board 121.
  • the wireless communication unit may also be arranged on other circuit boards and arranged at any suitable position.
  • the third circuit board 123 may be arranged together with the incoming wire and outgoing wire assembly 150, and may be provided with a through hole 1231 allowing the outgoing wire terminal 151 to pass therethrough.
  • a current sensor may be disposed on the third circuit board 123 so that the current on the outgoing wire terminal 151 may be sensed.
  • FIG. 17 shows a perspective view of an electrical switch 100 mounted on a circuit breaker 300 according to a further embodiment of the present disclosure. As shown in FIG. 17 , the electrical switch 100 is entirely plugged into the front side C of the circuit breaker 300, which avoids occupying the space on the side D of the circuit breaker 300.
  • the electrical switches 100 shown in FIGS. 9-17 may also comprise a button (for operation by a user to control the relay), a metering unit and a diagnostic unit.
  • the description of the electrical switches and their components of FIGS. 3 through 8 also applies to the electrical switches and their components shown in FIGS. 9 through 17 , unless explicitly stated.
  • the electrical switch according to the present disclosure is not limited to the number of relays and the number of incoming wires and outgoing wires used in the above embodiments, and fewer or more relays and incoming wires and outgoing wires may be selected as needed.
  • a switchgear that may comprise the electrical switch 100.
  • the switchgear may be used to control the load of household appliances such as electric heaters, lighting, and the like.
  • the household power-use environment has characteristics such as light load and infrequent switch switching.
  • the electrical switch 100 using a relay as a switching device is well adapted for such a household load.
  • the electrical switch 100 has advantages such as compactness, independence, remote control, simple wiring, and intelligence (wireless control, temperature protection, metering function), which improves the performance of the switching device that controls the home appliance.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Distribution Board (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (18)

  1. Elektrischer Schalter (100), der als Schütz verwendet werden kann und umfasst:
    ein Gehäuse (141, 142);
    eine Relaisbaugruppe, die innerhalb des Gehäuses (141, 142) angeordnet und so konfiguriert ist, dass sie einen mit dem elektrischen Schalter (100) verbundenen Stromkreis direkt ein- und ausschaltet, wobei die Relaisbaugruppe ein erstes Relais (110-1) umfasst; und
    eine Steuerbaugruppe, die parallel zu der Relaisbaugruppe in demselben Gehäuse (141, 142) angeordnet ist, wobei die Steuerbaugruppe so konfiguriert ist, dass sie die Relaisbaugruppe steuert, und wobei die Steuerbaugruppe eine drahtlose Kommunikationseinheit (160) umfasst, die so konfiguriert ist, dass sie Signale zur Fernsteuerung der Relaisbaugruppe empfängt.
  2. Elektrischer Schalter (100) nach Anspruch 1, wobei die Steuerbaugruppe einer ersten Seite (A) einer Vielzahl von Seiten des ersten Relais (110-1) gegenüberliegt, wobei die Vielzahl von Seiten eine Dicke des ersten Relais (110-1) definiert.
  3. Elektrischer Schalter (100) nach Anspruch 2, wobei der elektrische Schalter (100) weiterhin umfasst:
    eine Eingangsdraht- und Ausgangsdraht-Baugruppe (150), die parallel zu der Relaisbaugruppe in dem Gehäuse (141, 142) angeordnet ist, wobei die Eingangsdraht- und Ausgangsdraht-Baugruppe (150) einer zweiten Seite (B) der Vielzahl von Seiten des ersten Relais (110-1) gegenüberliegt und so konfiguriert ist, dass sie elektrische Anschlüsse (111), die auf der zweiten Seite (B) angeordnet sind, mit einem externen Stromkreis elektrisch verbindet.
  4. Elektrischer Schalter (100) nach Anspruch 1 oder 2, wobei die Steuerbaugruppe umfasst:
    eine Steueranschlusseinheit (130), die für den Anschluss einer Schaltvorrichtung außerhalb des elektrischen Schalters (100) konfiguriert ist, um ein Steuern der Relaisbaugruppe durch die Schaltvorrichtung zu ermöglichen.
  5. Elektrischer Schalter (100) nach Anspruch 4, wobei die Steueranschlusseinheit (130) und/oder das Gehäuse (141, 142) mit einer Aussparung (131) zur Aufnahme einer Kupfersammelschiene versehen ist/sind.
  6. Elektrischer Schalter (100) nach Anspruch 2, wobei die Steuerbaugruppe umfasst:
    eine erste Platine (121) und eine zweite Platine (122), die einander gegenüberliegend angeordnet sind, wobei Platinenflächen der ersten Platine (121) und der zweiten Platine (122) im Wesentlichen rechtwinklig zu der ersten Seite (A) des ersten Relais (110-1) sind, um andere Elemente in der Steuerbaugruppe zu tragen.
  7. Elektrischer Schalter (100) nach einem der Ansprüche 1 bis 6, wobei die Relaisbaugruppe weiterhin umfasst:
    ein zweites Relais (110-2), wobei das zweite Relais (110-2) und das erste Relais (110-1) benachbart zueinander angeordnet sind.
  8. Elektrischer Schalter (100) nach Anspruch 7, wobei das erste Relais (110-1) und das zweite Relais (110-2) entlang einer Längsrichtung des ersten Relais (110-1) und des zweiten Relais (110-2) angeordnet sind.
  9. Elektrischer Schalter (100) nach Anspruch 8, wobei der elektrische Schalter (100) weiterhin umfasst:
    eine Eingangsdraht- und Ausgangsdraht-Baugruppe (150), die mit der Relaisbaugruppe eine L-Form bildet und so konfiguriert ist, dass sie elektrische Anschlüsse (111) an der Relaisbaugruppe mit einem externen Stromkreis elektrisch verbindet, wobei die Eingangsdraht- und Ausgangsdraht-Baugruppe (150) einen Eingangsdrahtanschluss (153) und einen Ausgangsdrahtanschluss (151) umfasst, wobei der Eingangsdrahtanschluss (153) einer Innenseite der L-Form zugewandt ist und so konfiguriert ist, dass er durch Einführen elektrisch mit einem Leistungsschalter (300) verbunden ist.
  10. Elektrischer Schalter (100) nach Anspruch 9, wobei die Steuerbaugruppe umfasst:
    eine erste Platine (121), eine zweite Platine (122) und eine dritte Platine (123), die so konfiguriert sind, dass sie andere Elemente in der Steuerbaugruppe tragen, wobei die erste Platine (121) und die zweite Platine (122) auf einer Seite der L-Form angeordnet sind, die mit der Relaisbaugruppe versehen ist, und die dritte Platine (123) auf der anderen Seite der L-Form angeordnet ist, die mit der Eingangsdraht- und Ausgangsdraht-Baugruppe (150) versehen ist.
  11. Elektrischer Schalter (100) nach Anspruch 7, wobei das erste Relais (110-1) und das zweite Relais (110-2) entlang einer Dickenrichtung des ersten Relais (110-1) und des zweiten Relais (110-2) angeordnet sind.
  12. Elektrischer Schalter (100) nach Anspruch 11, wobei der elektrische Schalter (100) weiterhin umfasst:
    eine Eingangsdraht- und Ausgangsdraht-Baugruppe (150), die einer Seite der Relaisbaugruppe gegenüberliegt, die mit elektrischen Anschlüssen (111) versehen ist, und so konfiguriert ist, dass sie die elektrischen Anschlüsse (111) an der Relaisbaugruppe mit einem externen Stromkreis verbindet, wobei die Eingangsdraht- und Ausgangsdraht-Baugruppe (150) einen Eingangsdrahtanschluss (153) und einen Ausgangsdrahtanschluss (151) umfasst, wobei der Eingangsdrahtanschluss (153) so konfiguriert ist, dass er elektrisch mit einem Leistungsschalter (300) durch Einführen verbunden ist.
  13. Elektrischer Schalter (100) nach Anspruch 12, wobei die Steuerbaugruppe umfasst:
    eine erste Platine (121), eine zweite Platine (122) und eine dritte Platine (123), die so konfiguriert sind, dass sie andere Elemente in der Steuerbaugruppe tragen, und die zusammen mit der Eingangsdraht- und Ausgangsdraht-Baugruppe (150) auf derselben Seite der Relaisbaugruppe angeordnet sind.
  14. Elektrischer Schalter (100) nach Anspruch 10 oder 13, wobei die dritte Platine (123) ein Durchgangsloch (1231) aufweist, durch das der Eingangsdrahtanschluss (153) oder der Ausgangsdrahtanschluss (151) hindurchtreten kann, um den Strom am Eingangsdrahtanschluss (153) oder am Ausgangsdrahtanschluss (151) durch die dritte Platine (123) zu erfassen.
  15. Elektrischer Schalter (100) nach einem der Ansprüche 1 bis 14, wobei die drahtlose Kommunikationseinheit (160) so konfiguriert ist, dass sie mit Zigbee kommuniziert.
  16. Elektrischer Schalter (100) nach einem der Ansprüche 1 bis 15, wobei die Steuerbaugruppe umfasst:
    eine Taste (126), die von einem Benutzer zur Steuerung der Relaisbaugruppe (110) betätigt werden kann.
  17. Elektrischer Schalter (100) nach einem der Ansprüche 1 bis 16, wobei die Steuerbaugruppe umfasst:
    eine Messeinheit, die so konfiguriert ist, dass sie einen elektrischen Parameter und/oder einen Temperaturparameter des elektrischen Schalters (100) misst; und
    eine Diagnoseeinheit, die so konfiguriert ist, dass sie einen EIN/AUSZustand des elektrischen Schalters (100) bestimmt.
  18. Schaltgerät, das den elektrischen Schalter (100) nach einem der Ansprüche 1-17 umfasst.
EP19210897.5A 2018-11-23 2019-11-22 Elektrischer schalter und schaltanlage Active EP3657524B1 (de)

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CN201821943926.4U CN209104072U (zh) 2018-11-23 2018-11-23 电气开关以及开关柜

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CN111223713B (zh) * 2018-11-23 2022-10-28 施耐德电气工业公司 电气开关以及开关柜
FR3103346B1 (fr) * 2019-11-20 2021-11-19 Crouzet Automatismes Produit d'automatisme au format DIN43880
CN112309787B (zh) * 2020-11-14 2021-12-21 江苏北辰电气设备有限公司 一种配电用塑壳式电子断路器
DE112021006550A5 (de) * 2021-03-03 2023-10-26 Siemens Aktiengesellschaft Vorrichtung zum schalten einer handhabe eines elektrischen schalters und multifunktionsantrieb mit solch einer vorrichtung

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US20100070100A1 (en) * 2008-09-15 2010-03-18 Finlinson Jan F Control architecture and system for wireless sensing

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US20140124262A1 (en) * 2012-11-02 2014-05-08 William H. Martin Modular overload relay assembly with preformed coil interface
US9196441B2 (en) * 2013-04-19 2015-11-24 Abl Ip Holding Llc Modular relay sub-assembly
NL2020390B1 (nl) * 2017-02-07 2020-01-24 Volkerrail Nederland Bv Afstandbestuurde (RC) sectiebezetting bij een spoorweg met B-relais.
CN108717919A (zh) * 2018-07-23 2018-10-30 浙江西芝电气有限公司 一种智能化控制的接触器

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AU2019268207B2 (en) 2021-02-25
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