WO2019029481A1 - Disjoncteur de fuite électrique - Google Patents

Disjoncteur de fuite électrique Download PDF

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Publication number
WO2019029481A1
WO2019029481A1 PCT/CN2018/098963 CN2018098963W WO2019029481A1 WO 2019029481 A1 WO2019029481 A1 WO 2019029481A1 CN 2018098963 W CN2018098963 W CN 2018098963W WO 2019029481 A1 WO2019029481 A1 WO 2019029481A1
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WO
WIPO (PCT)
Prior art keywords
circuit breaker
leakage
earth leakage
protection component
assembly
Prior art date
Application number
PCT/CN2018/098963
Other languages
English (en)
Chinese (zh)
Inventor
邱蔚冰
王宏亮
李婵娟
Original Assignee
施耐德电气工业公司
邱蔚冰
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=65273365&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2019029481(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 施耐德电气工业公司, 邱蔚冰 filed Critical 施耐德电气工业公司
Priority to RU2020109378A priority Critical patent/RU2774982C2/ru
Priority to GB2003182.9A priority patent/GB2579953B/en
Publication of WO2019029481A1 publication Critical patent/WO2019029481A1/fr
Priority to NO20200271A priority patent/NO20200271A1/en

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Classifications

    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/128—Manual release or trip mechanisms, e.g. for test purposes
    • 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
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • 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
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection

Definitions

  • the present disclosure relates generally to earth leakage circuit breakers, and more particularly to integrated earth leakage circuit breakers.
  • the earth leakage circuit breaker quickly performs an action to open the circuit when the leakage current in the circuit exceeds a predetermined value.
  • the earth leakage circuit breaker is assembled, which includes a circuit breaker module and a leakage product module that are assembled side by side.
  • Such an earth leakage circuit breaker occupies more space and requires manual wiring, which is time consuming and labor intensive.
  • Embodiments of the present disclosure provide an earth leakage circuit breaker that integrates a leakage product module and a circuit breaker module while ensuring performance of an earth leakage circuit breaker to implement an integrated earth leakage circuit breaker, thereby not only eliminating wiring but also eliminating wiring Allow to reduce the size of the distribution box.
  • an earth leakage circuit breaker including: an incoming terminal disposed in a first direction, a circuit breaker assembly, a leakage protection component, and an outlet terminal, wherein the leakage protection component includes: a zero sequence transformer Configuring to sense a leakage current in the loop to output a sensing signal; the control circuit, disposed on the electronic circuit board, configured to receive the sensing signal and determine whether the leakage current exceeds based on the sensing signal a threshold; and an action actuator configured to perform an action when the leakage current exceeds the threshold to cause the circuit breaker assembly to open a loop, wherein the zero sequence transformer and the motion actuator are disposed at a first side of the electronic circuit board in the second direction, the second direction being orthogonal to the first direction.
  • the leakage protection component includes: a zero sequence transformer Configuring to sense a leakage current in the loop to output a sensing signal; the control circuit, disposed on the electronic circuit board, configured to receive the sensing signal and determine whether the leakage current exceeds based on the sensing signal
  • the leakage product module is disposed at the outlet end such that the main circuit does not turn in the direction, directly enters the leakage induction coil and is connected to the terminal.
  • the leakage protection function is realized with the minimum space, and the maximum space of the miniature circuit breaker is ensured.
  • the leakage protection component further includes at least two wires for at least two poles, the at least two wires passing through the zero sequence transformer, and the at least two wires One end is coupled to a respective terminal of the incoming terminal, and the second ends of the at least two wires are respectively coupled to respective terminals of the outgoing terminal. In this way, at least two poles are integrated together.
  • the leakage protection component further includes an extended contact portion for at least two poles, the extended contact portion extending in the second direction, the extended contact portion being adjacent to the electronic circuit board
  • the ends of the first side are respectively engaged with the second ends of the at least two wires, and the extended contacts are also coupled to respective terminals of the outlet terminals, respectively. In this way, the shortest loop is guaranteed, minimizing power consumption and temperature rise.
  • the earth leakage circuit breaker further includes: a magnetic protection component disposed between the incoming terminal and the leakage protection component along the first direction, and configured to perform Short circuit protection.
  • terminals of the first side of the magnetic protection component are respectively coupled to the incoming terminal, and terminals of the second side of the magnetic protection component are respectively coupled to the first of the at least two wires One end.
  • the motion actuator includes a first housing portion
  • the magnetic protection assembly includes a first magnetic assembly for one pole
  • the first magnetic assembly includes a second housing portion
  • the first housing portion and the second housing portion are joined to each other.
  • first housing portion and the second housing portion are coaxially joined as a combined housing.
  • the leakage protection component and the magnetic protection component are combined into one combined component, which minimizes space, satisfies the trend of product miniaturization, facilitates product assembly, and improves assembly efficiency.
  • the earth leakage circuit breaker further includes: at least two operating handles configured to respectively control at least two poles. In this way, the performance of the miniature circuit breaker is guaranteed.
  • the earth leakage circuit breaker further includes: a leakage test button disposed between the incoming terminal and the operating handle, and disposed between the two poles, the leakage test A button is configured to detect whether the earth leakage circuit breaker opens the circuit when the leakage current exceeds the threshold. In this way, the leakage test button is easy to connect with the two poles and conforms to the operating habits.
  • the zero sequence transformer and the motion actuator are disposed side by side on the first side of the electronic circuit board. In this way, the leakage protection function is implemented with a minimum of space.
  • an earth leakage circuit breaker In an earth leakage circuit breaker according to an embodiment of the present disclosure, power consumption and temperature of a leakage product module are reduced by integrating two-pole functional components together, reducing footprint and improving assembly efficiency, and by optimizing layout design regarding a leakage product module The rise is minimized and the space of the miniature circuit breaker is ensured to meet miniaturization and ensure product performance.
  • FIG. 1 shows a schematic cross-sectional view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure
  • FIG. 2 shows a schematic cross-sectional view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure
  • FIG. 3 illustrates a schematic structural view of a leakage protection component according to an embodiment of the present disclosure
  • FIG. 4 illustrates a schematic structural view of a leakage protection component according to an embodiment of the present disclosure
  • FIG. 5 illustrates a schematic structural view of a leakage protection component and a magnetic protection component according to an embodiment of the present disclosure
  • FIG. 6 shows a schematic cross-sectional view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure
  • FIG. 7 illustrates an exploded schematic view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure
  • FIG. 8 illustrates a front view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure
  • FIG. 9 shows a partially exploded schematic view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure.
  • the integrated leakage circuit breaker combines the leakage product module and the circuit breaker module of the assembled leakage circuit breaker into one without affecting the performance of the earth leakage circuit breaker.
  • the leakage product module is disposed at the outlet end without affecting user usage and maintaining performance, and the leakage protection component and the magnetic protection component for the two poles are combined into one component.
  • the leakage protection function is realized with a minimum space by optimizing the layout of the zero-sequence transformer of the leakage protection module, the electronic circuit board, the action actuator and the extended contact.
  • FIG. 1 illustrates a cross-sectional view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure.
  • the earth leakage breaker 100 includes an incoming terminal 102, a circuit breaker assembly 104, a leakage protection component 106, and an outlet terminal 108 that are sequentially disposed along the Z direction.
  • the incoming terminal 102 and the outgoing terminal 108 are respectively disposed at both ends of the leakage breaker 100 in the Z direction for respectively connecting lines of the respective poles (for example, P poles and N poles) and outputting the pole lines.
  • the incoming terminal 102 and the outgoing terminal 108 may be terminals for at least two poles.
  • the incoming terminal 102 and the outgoing terminal 108 are two terminals.
  • the two poles are P poles and N poles, or P1 poles and P2 poles.
  • the circuit breaker assembly 104 is electrically coupled between the incoming terminal 102 and the outgoing terminal 108 and is disposed proximate to the incoming terminal 102 in the Z direction.
  • the circuit breaker assembly 104 is configured to turn the circuit on or off.
  • the circuit breaker assembly 104 is a circuit breaker known in the art, and a description thereof will be omitted herein.
  • the leakage protection component 106 is electrically coupled between the incoming terminal 102 and the outgoing terminal 108 and is disposed proximate to the outgoing terminal 108 in the Z direction. That is, in the earth leakage breaker 100 of the embodiment of the present disclosure, the leakage protection component 106 is disposed on the outlet terminal 108 side, while ensuring that the design of the breaker assembly 104 remains unchanged, so that the main loop does not have to be rotated, directly The leakage protection component 106 is connected to the outlet terminal 108.
  • the earth leakage circuit breaker 100 may further include a thermal protection component electrically coupled between the incoming terminal 102 and the outgoing terminal 108, disposed in the Z direction proximate to the incoming terminal 102, and configured to perform overload protection, such as In the case of a current overload, the circuit breaker assembly is disconnected from the circuit.
  • the thermal protection component is a thermal protector well known in the art, and a description thereof will be omitted herein.
  • the earth leakage circuit breaker 100 may further include a magnetic protection component electrically coupled between the incoming terminal 102 and the outgoing terminal 108, disposed in the Z direction proximate to the incoming terminal 102, and configured to perform short circuit protection, such as The circuit breaker assembly is disconnected from the circuit in the event of a short circuit.
  • the magnetic protection component is substantially the same as the magnetic protector known in the art, and differences of the magnetic protection component according to an embodiment of the present disclosure will be described later with reference to FIGS. 4 to 6.
  • FIGS. 2 and 3 show a schematic cross-sectional view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure.
  • FIG. 3 shows a schematic structural view of a leakage protection assembly in accordance with an embodiment of the present disclosure.
  • the leakage protection component 106 in the earth leakage circuit breaker 100 includes a zero sequence transformer 202, a control circuit, an electronic circuit board 204, and an action actuator 206.
  • the zero sequence transformer 202 is configured to sense a leakage current in the loop and output a sensing signal corresponding to the sensed leakage current.
  • the wires for the two poles pass through the zero sequence transformer 202.
  • the zero sequence transformer 202 senses the imbalance of the current flowing in the wires for the two poles and outputs a corresponding sensing signal.
  • the control circuit is disposed on the electronic circuit board 204.
  • the control circuit is configured to receive the sensed signal from the zero sequence transformer 202 and determine a leakage current fault based on the sensed signal. In an example embodiment, the control circuit determines whether the leakage current exceeds a predetermined threshold based on the sensed signal. When the sensed leakage current exceeds a predetermined threshold, the control circuit determines a leakage current fault in the loop and outputs a corresponding control signal.
  • Motion actuator 206 is mechanically coupled to circuit breaker assembly 104.
  • the action actuator 206 is configured to perform an action when the leakage current in the loop exceeds a predetermined threshold such that the circuit breaker assembly 104 opens the circuit.
  • the motion actuator 206 receives the control signal from the electronic circuit board 204 and performs an action based on the control signal, for example, moving the leakage motor core to operate the jack, thereby opening the circuit through the circuit breaker assembly 104 to ensure power safety.
  • the zero sequence transformer 202 is disposed on one side (for example, the first side) of the electronic circuit board 204 in the Y direction (for example, the positive Y direction), and the motion actuator 206 is also disposed on the electronic circuit board.
  • One side of the 204 direction eg, the positive Y direction
  • the zero sequence transformer 202 and the motion actuator 206 are disposed side by side on the first side of the electronic circuit board 204.
  • the combination of the zero sequence transformer 202 and the motion actuator 206 and the electronic circuit board 204 are arranged along the Y direction.
  • the combination of the zero sequence transformer 202, the motion actuator 206 and the electronic circuit board 204, and the incoming terminal 102, the circuit breaker assembly 104, and the outgoing terminal 108 are arranged in the Z direction. It should be understood that the X, Y, and Z directions shown in the figures are three mutually orthogonal directions in a Cartesian coordinate system.
  • zero sequence transformer 202, motion actuator 206, and electronic circuit board 204 are disposed substantially along the Y direction to minimize the thickness of leakage protection component 106 in the Z direction. It should be understood that the terminal portions of the zero sequence transformer 202 and the motion actuator 206 for coupling or engaging with the electronic circuit board 204 may overlap the electronic circuit board 204 in the Z direction. Further, the zero sequence transformer 202 and the motion actuator 206 do not overlap each other, and the width of the zero sequence transformer 202 and the motion actuator 206 in the X direction is close to or equal to the width of the electronic circuit board 204 in the X direction.
  • the space arrangement of each component is optimized, and the occupied space is saved, thereby realizing the leakage protection function with the minimum space without affecting the micro disconnection.
  • the space of the device ensures the good performance of the leakage circuit breaker.
  • the earth leakage circuit breaker 100 further includes a test circuit 208.
  • Test circuit 208 is coupled to the leakage test button of earth leakage circuit breaker 100 for use as a leakage test circuit for earth leakage circuit breaker 100.
  • the test loop 208 is disposed at a substantially intermediate position of the two poles, which will be described later with reference to FIG.
  • FIG. 4 shows a schematic structural view of a leakage protection assembly in accordance with an embodiment of the present disclosure.
  • the leakage protection assembly 106 further includes two wires 402 and 404 for the two poles, and the two wires 402 and 404 pass through the zero sequence transformer 202.
  • the first ends of the two wires 402 and 404 are respectively coupled to the two terminals of the incoming terminal 102, and the second ends of the two wires 402 and 404 are coupled to the two terminals of the outgoing terminal 108, respectively.
  • the two wires 402 and 404 can be electrically conductive hard wires or cords that are electrically insulated from each other. It should be understood that the electronic circuit board 204 of the leakage protection assembly 106 is not shown in FIG. 4 for ease of illustration.
  • the leakage protection assembly 106 also includes extended contacts 406 and 408 for the two poles.
  • the extended contacts 406 and 408 extend in the Y direction, and the ends in the positive Y direction of the extended contacts 406 and 408 engage the second ends of the two wires 402 and 404, respectively.
  • Extension contacts 406 and 408 are coupled to the two terminals of the outlet terminal, respectively. In this manner, the wires 402 and 404 that exit from the zero sequence transformer 202 are directly engaged with the outlet terminals in the shortest loop manner, thereby minimizing power consumption and temperature rise.
  • the two wires 402 and 404 are joined to the extended contacts 406 and 408 by soldering.
  • the earth leakage circuit breaker can also include a magnetic protection assembly.
  • the magnetic protection component 410 is electrically coupled between the incoming terminal 102 and the outgoing terminal 108 and disposed between the incoming terminal 102 and the leakage protection component 106 in the Z direction. Magnetic protection component 410 is coupled to leakage protection component 106 in the Z direction.
  • two terminals of the magnetic protection component 410 away from one side (eg, the first side) of the extended contacts 406 and 408 are respectively coupled to the incoming terminals.
  • Two terminals of the magnetic protection component 410 adjacent one side (e.g., the second side) of the extended contacts 406 and 408 are joined to the first ends of the two wires 402 and 404, respectively.
  • the magnetic protection assembly 410 includes two joint terminals 412 and 414, and the magnetic protection assembly 410 is engaged with the two wires 402 and 404 of the leakage protection assembly through the joint terminals 412 and 414, respectively.
  • the bond terminals 412 and 414 can be joined to the wires 402 and 404 by soldering.
  • the leakage protection component may further include extension terminals 418 and 420.
  • Extension terminals 418 and 420 can engage extension contacts 406 and 408, respectively.
  • the extension terminals 418 and 420 may be integrally formed with the extended contact portions 406 and 408, respectively.
  • the extension terminals 418 and 420 extend from the ends in the negative Y direction of the extension contacts 406 and 408 toward the negative Z direction to facilitate coupling with the outlet terminals.
  • the earth leakage protection assembly is engaged with the joint terminals 412 and 414 of the magnetic protection component 410 through the wires 402 and 404.
  • Other engagements of the leakage protection component and the magnetic protection component in addition to the above-described engagement will be described below with reference to FIGS. 5 and 6.
  • FIG. 5 is a block diagram showing a state of a leakage protection component and a magnetic protection component according to an embodiment of the present disclosure. It should be understood that FIG. 5 shows the state of the combination of the leakage protection component and the magnetic protection component before being assembled into the earth leakage circuit breaker, and shows that the contact portions 406 and 408 and the electronic circuit board are extended in the leakage protection component. The state between 204.
  • the magnetic protection assembly includes a first magnetic assembly 502 for one pole and a second magnetic assembly 504 for the other pole.
  • the first magnetic component 502 is engaged with the wire 402 of the leakage protection assembly by the bond terminal 412. Additionally, the first magnetic component 502 is engaged with the motion actuator 206 of the earth leakage protection assembly.
  • the first magnetic component 502 is fixed relative to the motion actuator 206, for example, relative to the leakage protection component.
  • the first magnetic component 502 can be integral with the motion actuator 206.
  • the first magnetic component 502 can be integrally formed with the motion actuator 206. The engagement of the first magnetic component 502 with the motion actuator 206 will be described later with reference to FIG.
  • the second magnetic component 504 is engaged with the wire 404 of the leakage protection component by the bonding terminal 414.
  • the assembly of the leakage protection component and the magnetic protection component shown in FIG. 5 facilitates assembly into the earth leakage circuit breaker.
  • one pole for a relatively fixed first magnetic component 502 is first assembled, and then when the other pole is assembled, in an exemplary embodiment, the second magnetic component 504 can be relative to other components that have been fixed (eg, leakage protection)
  • the assembly or first magnetoresistive member 502) is movable, so assembly difficulty is greatly reduced.
  • the combined components of the leakage protection component and the magnetic protection component not only integrate the components for the two poles, but also integrate the different functional components together, and are easy to assemble into the final product while reducing the space.
  • the extended contacts 406 and 408 can be fixed relative to the electronic circuit board 204.
  • the extended contacts 406 and 408 can be detachably engaged with the electronic circuit board 204.
  • the extended contacts 406 and 408 can be fixedly engaged with the electronic circuit board 204.
  • the extended contacts 406 and 408 can also be movable relative to the electronic circuit board 204.
  • the combined assembly of the leakage protection component and the magnetic protection component includes extended contacts 406 and 408 coupled to the outlet terminals such that the combined components of the leakage protection component and the magnetic protection component are easily assembled with the outlet terminals.
  • FIG. 6 shows a cross-sectional schematic view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure, in which the engagement of the first magnetic component 502 with the motion actuator 206 in addition to engagement via the joint terminal 412 is schematically illustrated.
  • the motion actuator 206 includes a housing portion 602.
  • the first magnetic component 502 includes a housing portion 604.
  • the housing portion 602 and the housing portion 604 are joined to each other.
  • the housing portion 602 is coaxially coupled to the housing portion 604 as a combined housing.
  • the housing portion 602 and the housing portion 604 are coaxially joined in the Z direction.
  • the housing portion 602 can be united with the housing portion 604.
  • the housing portion 602 can be integrally formed with the housing portion 604.
  • the leakage protection component and the magnetic protection component are integrated into a combined component.
  • the combination assembly is a pre-assembled assembly, i.e., the assembly can be provided directly during assembly of the entire earth leakage circuit breaker.
  • the combination assembly includes extended contacts to facilitate shortening the loop length and assembling with the outlet terminals.
  • the design of the magnetic protection component in the combined component near the incoming terminal and the design of the coupling with the circuit breaker are the same as the typical magnetic protector, so that no additional design and assembly difficulties are required, and it is ensured. Performance of circuit breakers including magnetic protection.
  • the loop length in the combined assembly is short, so that the temperature rises and the power consumption is small, and the combined assembly has a small footprint, which does not affect the space of the miniature circuit breaker, thereby ensuring the performance of the integrated leakage short.
  • FIG. Fig. 7 shows an exploded schematic view of an earth leakage circuit breaker according to an embodiment of the present disclosure.
  • the integrated leakage circuit breaker also includes a left side box, a left side cover, a test spring, a right side box and a right side cover to realize the main functions of the earth leakage circuit breaker.
  • the integrated leakage circuit breaker also includes accessories such as the outlet terminal block, the front cover and the test button, and the locking clip.
  • the magnetic protection and leakage protection components are first provided.
  • the relatively fixed portion of the magnetic protection and leakage protection assembly eg, the first magnetic assembly
  • the relatively movable portion of the magnetic protection and leakage protection assembly eg, the second magnetic assembly
  • the outlet terminal block is engaged with the extended contact portions of the magnetic protection and leakage protection components
  • the assembly of the integrated leakage circuit breaker is substantially completed.
  • the left side box, the left side cover, the right side case, and the right side cover are provided with functions other than the magnetic protection and leakage protection components described herein for implementing the function of the earth leakage circuit breaker.
  • Well-known components the description of these known components will be omitted herein.
  • FIG. 8 illustrates a front view of an integrated earth leakage circuit breaker in accordance with an embodiment of the present disclosure.
  • the earth leakage circuit breaker 100 further includes two operating handles 802 that control the two poles, respectively.
  • the earth leakage breaker 100 further includes a leakage test button 804 that is disposed between the incoming terminal 102 and the operating handle 802.
  • the leakage test button 804 is used to detect whether the earth leakage circuit breaker opens the circuit when the leakage current exceeds a predetermined threshold. In this manner, the integrated earth leakage circuit breaker according to an embodiment of the present disclosure maintains a typical position of the leakage test button to facilitate operational habituation and convenience.
  • the leakage test button 804 is disposed in the middle of the two poles. For example, the leakage test button 804 is disposed at a center point of the earth leakage breaker 100 in the X direction to facilitate connection with the two poles.
  • FIG. 9 shows a partially exploded schematic view of an earth leakage circuit breaker in accordance with an embodiment of the present disclosure.
  • Figure 9 shows the set position of the test circuit 208 of Figure 2 in an earth leakage circuit breaker.
  • a leakage test button 804 is disposed on the left side cover 902, and a test spring is disposed in the left side cover 902.
  • the test circuit is placed in the right side box 904 to be located approximately midway between the two poles for easy connection to the two poles.
  • a layout design of a zero sequence transformer, an electronic circuit board, an action actuator, and an extended contact portion of the earth leakage protection assembly is provided, which not only occupies the earth leakage protection component in the earth leakage circuit breaker
  • the smaller space and shorter loop length also allow the leakage protection component to be integrated with the magnetic protection component as a combined component.
  • the combined assembly integrates components for two poles and different functional components, reducing footprint, ensuring the performance of miniature circuit breakers, and facilitating the assembly of the entire integrated earth leakage circuit breaker.
  • the concept of the present disclosure may also be applied to an earth leakage circuit breaker for two or more poles, that is, the earth leakage protection component includes two or more wires. It passes through the zero sequence transformer and is coupled to the respective terminals of the incoming terminal and the respective terminals of the outgoing terminal, respectively.

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Abstract

L'invention concerne un disjoncteur de fuite électrique comprenant une borne d'entrée de ligne, un ensemble disjoncteur, un ensemble de protection contre les fuites électriques et une borne de sortie de ligne qui sont disposés successivement dans une première direction. L'ensemble de protection contre les fuites électriques comprend : un transformateur à champ homopolaire, conçu pour détecter un courant de fuite électrique dans un circuit de détection de façon à délivrer un signal de détection ; un circuit de commande, disposé sur une carte de circuit électronique, et conçu pour recevoir le signal de détection et pour déterminer si le courant de fuite électrique dépasse un seuil conformément au signal de détection ; et un mécanisme d'exécution d'action, conçu pour exécuter une action lorsque le courant de fuite électrique dépasse le seuil, de sorte que l'ensemble disjoncteur coupe le circuit. Le transformateur à champ homopolaire et le mécanisme d'exécution d'action sont disposés sur un premier côté dans une seconde direction de la carte de circuit électronique, et la seconde direction est orthogonale à la première direction.
PCT/CN2018/098963 2017-08-09 2018-08-06 Disjoncteur de fuite électrique WO2019029481A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RU2020109378A RU2774982C2 (ru) 2017-08-09 2018-08-06 Прерыватель цепи при утечке
GB2003182.9A GB2579953B (en) 2017-08-09 2018-08-06 Leakage circuit breaker
NO20200271A NO20200271A1 (en) 2017-08-09 2020-03-06 Electric leakage circuit breaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710674062.4 2017-08-09
CN201710674062.4A CN109390187B (zh) 2017-08-09 2017-08-09 漏电断路器

Publications (1)

Publication Number Publication Date
WO2019029481A1 true WO2019029481A1 (fr) 2019-02-14

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PCT/CN2018/098963 WO2019029481A1 (fr) 2017-08-09 2018-08-06 Disjoncteur de fuite électrique

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CN (1) CN109390187B (fr)
GB (1) GB2579953B (fr)
NO (1) NO20200271A1 (fr)
WO (1) WO2019029481A1 (fr)

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