WO2022130552A1 - Dispositif de déclenchement par surintensité et disjoncteur l'utilisant - Google Patents

Dispositif de déclenchement par surintensité et disjoncteur l'utilisant Download PDF

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Publication number
WO2022130552A1
WO2022130552A1 PCT/JP2020/047083 JP2020047083W WO2022130552A1 WO 2022130552 A1 WO2022130552 A1 WO 2022130552A1 JP 2020047083 W JP2020047083 W JP 2020047083W WO 2022130552 A1 WO2022130552 A1 WO 2022130552A1
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WO
WIPO (PCT)
Prior art keywords
conductor
spring
iron core
overcurrent
movable
Prior art date
Application number
PCT/JP2020/047083
Other languages
English (en)
Japanese (ja)
Inventor
央 佐々木
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to EP20965940.8A priority Critical patent/EP4266343A4/fr
Priority to JP2022569411A priority patent/JP7412600B2/ja
Priority to PCT/JP2020/047083 priority patent/WO2022130552A1/fr
Publication of WO2022130552A1 publication Critical patent/WO2022130552A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element

Definitions

  • the present application relates to an overcurrent trip device and a circuit breaker using the overcurrent trip device.
  • the overcurrent trip device is built into the circuit breaker, detects the overcurrent that occurs when an electric circuit including the circuit breaker causes a short-circuit accident, etc., and opens and closes the circuit breaker in the closed pole state. It is a device that activates the mechanism to bring the circuit breaker to the open pole state.
  • the circuit breaker cuts off the overcurrent flowing in the main circuit at the same time as shifting to the open pole state.
  • the overcurrent trip device is, for example, an electromagnet for detecting the overcurrent flowing in the main circuit, an output shaft for transmitting the driving force output from the electromagnet to the opening / closing mechanism of the circuit breaker, and an overcurrent trip device.
  • the return spring for setting the operating current value (current value when the opening operation is started) and the operating current value for adjusting the spring load by manipulating the amount of deflection of the return spring. It is equipped with a scale device.
  • the operation of the overcurrent tripping device is that when an overcurrent flows through the conductor penetrating the center of the electromagnet, the attractive force generated in the movable core of the electromagnet exceeds the load of the return spring, so that the movable core moves upward.
  • the operating rod connected to the movable iron core moves upward, and the holding latch that transmits the closed load to the main circuit contactor of the circuit breaker is disconnected from the main circuit breaker, thereby causing the circuit breaker. It activates an opening / closing mechanism that promotes an opening operation (see, for example, Patent Document 1). By this operation, the circuit breaker shifts to the open pole state.
  • the present application discloses a technique for solving the above-mentioned problems, and an object thereof is to obtain an overcurrent trip device that realizes miniaturization of the device and a circuit breaker using the device.
  • the overcurrent tripping device disclosed in the present application includes a conductor connected to the main circuit of a circuit breaker, a fixed core formed so as to surround the conductor, and a partially opened fixed core, and the fixed core.
  • the fixed core is provided with a movable core arranged at an opened position via a magnetic gap between the fixed core and the conductor so as to be movable by an electromagnetic force when an overcurrent flows through the conductor.
  • the movable iron core is arranged in contact with the conductor, and is characterized in that the movable iron core is in contact with the conductor when an overcurrent does not flow through the conductor before operation.
  • the circuit breaker disclosed in the present application can be connected to and separated from the arc extinguishing chamber in which the arc extinguishing space is formed, the fixed side main contact arranged on the lower side of the arc extinguishing chamber, and the fixed side main contact.
  • An overcurrent trip device that detects the overcurrent flowing between the fixed-side main contact and the movable-side main contact and drives the movable-side main contact in the tripping direction.
  • the overcurrent trip device is the one using the above overcurrent trip device.
  • the overcurrent trip device disclosed in the present application and the circuit breaker using the overcurrent trip device, it is possible to obtain an overcurrent trip device capable of realizing miniaturization of the device and a circuit breaker using the same. ..
  • FIG. 2 is a front sectional view taken along line AA of the overcurrent trip device shown in FIG. 2.
  • FIG. 2 is a side sectional view taken along line BB of the overcurrent trip device shown in FIG. 2.
  • FIG. 3 is a plan sectional view taken along line CC of the overcurrent trip device shown in FIG.
  • FIG. 5 is a component development view showing a movable iron core and a guide plate of the overcurrent trip device according to the first embodiment.
  • FIG. 5 is a component development view showing a modified example of a movable iron core and a guide plate of the overcurrent tripping device according to the first embodiment.
  • FIG. 3 is a front sectional view showing a state after the tripping operation of the overcurrent tripping device according to the first embodiment. It is a front sectional view of the overcurrent tripping apparatus according to Embodiment 2.
  • FIG. It is a side sectional view which shows the schematic structure of the circuit breaker by Embodiment 3.
  • FIG. 1 is a perspective view of the overcurrent trip device 100 according to the first embodiment
  • FIG. 2 is a plan view of the overcurrent trip device 100 according to the first embodiment
  • FIG. 3 is a front sectional view taken along the line AA of the overcurrent trip device 100 shown in FIG. 2, showing a state of the overcurrent trip device 100 before the trip operation.
  • FIG. 4 is a side sectional view taken along the line BB of the overcurrent tripping device shown in FIG. 2
  • FIG. 5 is a plan sectional view taken along the line CC of the overcurrent tripping device shown in FIG.
  • FIG. 6 is a plan view of the conductor 3 of the overcurrent trip device according to the first embodiment
  • the overcurrent trip device 100 according to the first embodiment is incorporated in a circuit breaker 200 described later, and is an overcurrent trip device when an overcurrent flows in the main circuit (not shown) of the circuit breaker 200.
  • This is a device in which the movable iron core 2 of 100 operates, and the latch drive unit 2b provided integrally with the movable iron core 2 operates the opening / closing mechanism of the circuit breaker 200 in the closed pole state.
  • the overcurrent trip device 100 surrounds the conductor 3 connected to the main circuit (not shown) of the circuit breaker 200, and the conductor 3 along the magnetic field generated around the conductor 3 by energization of the conductor 3.
  • the fixed core 1 is partially opened so as to cut the magnetic field diagonally, and the fixed core 1 is arranged at the opened position of the fixed core 1 via a magnetic gap 4.
  • It is movably arranged in the direction in which the magnetic gap 4 shrinks due to the electromagnetic force when an overcurrent flows through the conductor 3, that is, in the direction opposite to the conductor 3 (upward in FIG. 3) so that the magnetic gap 4 shrinks.
  • It has a movable iron core 2.
  • the conductor 3 is made of, for example, copper, and the fixed core 1 and the movable core 2 are made of, for example, a ferromagnet.
  • Guide plates 16 for restricting the operating range by sliding the movable iron core 2 are provided on the front surface and the back surface of the conductor 3 of the fixed core 1 in the extension direction 20a, respectively.
  • the guide plate 16 is provided to guide the vertical movement of the movable iron core 2.
  • the guide plate 16 is provided with facing holes 18a and 18b having the same axis on the outside of the fixed iron core 1, and the rotating shaft 6 is provided in the facing holes 18a and 18b which are the portions. Is provided so as to fit.
  • the rotary operation is performed around the rotation shaft 6, one end thereof is connected to the latch drive portion 2b of the movable iron core 2 via the movable iron core pin 2a, and the other end portion is connected to the latch drive portion 2b of the movable iron core 2 via the spring seat pin 7a.
  • a lever 5 connected to the spring seat 7 is provided.
  • the spring seat 7 is provided so as to be in close contact with the spring 8.
  • the spring seat 7 has a function of applying the load force of the spring 8 to the lever 5 as a seat of the spring 8.
  • the load force of the spring 8 is a stress due to a load that causes deflection such as the load of the spring 8.
  • the load force applied to the lever 5 is converted in the rotation direction around the rotation shaft 6 and applied in the direction in which the magnetic gap 4 widens in the movable iron core 2.
  • a lever cover 15 having an opening through which the latch drive portion 2b of the movable iron core 2 passes is provided on the upper portion of the lever 5, and is fixed to the spring guide 10.
  • the compression spring is used as the spring 8, but the spring is not particularly limited to the compression spring, and another spring such as a torsion spring may be used.
  • the overcurrent tripping device 100 is provided with a fixed core cover 14 so as to cover the outer periphery of the fixed core 1.
  • the guide plate 16, the lever 5, the lever cover 15, and the fixed iron core cover 14 are made of a non-ferromagnetic material such as austenitic stainless steel, brass, and aluminum.
  • the spring guide 10 is fixed to the guide plate 16 by the spring guide rivet 10a via the tube 17. When the spring guide 10 is in close contact with the guide plate 16, the tube 17 may be omitted.
  • the fixed iron core 1 is arranged so as to be in contact with the conductor 3 without a gap. That is, the fixed core 1 and the conductor 3 are provided so as to be fitted to each other, and the position of the fixed core 1 in the direction 20b perpendicular to the extension direction 20a of the conductor 3 is determined by the conductor 3. Further, the movable iron core 2 receives the load force of the spring 8 in the direction in which the magnetic gap 4 expands, and the movable iron core 2 is supported by the conductor 3 to fix the movable iron core 2.
  • the conductor 3 is responsible for the parts that determine the position of the fixed iron core 1.
  • the conductor 3 is responsible for the parts that define the dimensions of the magnetic gap 4 of the movable iron core 2, and no other parts are separately provided.
  • the movable iron core 2 is supported by the conductor 3. Therefore, the electromagnet composed of the conductor 3, the fixed core 1, and the movable iron core 2 of the overcurrent trip device 100 has no space that does not contribute to the electromagnetic force, and therefore, unlike the conventional electromagnet, between the conductor and the fixed core.
  • a larger electromagnetic force can be obtained as compared with a structure provided with a part for fixing a gap and a movable iron core. That is, in order to obtain an arbitrary electromagnetic force, the external dimensions are reduced and the weight is reduced by the structure of the overcurrent trip device 100.
  • the overcurrent trip device 100 includes a stage 9 and a spring adjusting bolt 11 in addition to the spring 8 outside the fixed iron core 1.
  • the stage 9 is in contact with the spring 8 and is a screw hole provided through the central portion of the stage 9 to be fitted with the screw portion provided in the spring adjusting bolt 11. Since the side surface 9b of the stage 9 faces the wall surface of the spring guide 10 inside the spring guide 10 shown in FIG. 4, the rotation of the stage 9 about the axis of the screw hole is suppressed. By rotating the spring adjusting bolt 11, the stage 9 moves along the wall surface of the spring guide 10 in the axial direction of the screw hole.
  • the movable core 2 is urged by the spring 8 in the direction in which the magnetic gap 4 with the fixed core 1 widens, and the strength of the urging to the movable core 2 changes as the stage 9 moves.
  • the strength of the urging of the movable iron core 2 determines the operating current value of the overcurrent trip device 100, and by making this adjustable, it is possible to set a plurality of current scale values.
  • the spring 8 is set so that its initial load is equal to the electromagnetic driving force at the operating current value of the overcurrent trip device 100.
  • the nut 12 is fixed to the spring guide 10 by the threaded portion of the spring adjusting bolt 11 so that the spring adjusting bolt 11 is provided so as not to rotate and the position of the stage 9 is fixed. Then, the spring load of the spring 8 is provided to be constant.
  • the spring guide 10 is provided so as to surround the spring 8 and the side surface 9b of the stage 9.
  • the spring guide 10 suppresses the bending of the spring 8 other than the moving direction of the stage 9, and suppresses the rotation of the stage 9.
  • the spring guide 10 is provided with a scale 13 on the outside.
  • the spring seat 7 is provided with a hole 7b in the center, and the cylindrical portion of the spring adjusting bolt 11 (a portion having a smooth surface shape that is not threaded) is provided in the hole 7b. It has a structure of fitting, and when the pulling operation is performed, the hole 7b and the cylindrical portion of the spring adjusting bolt 11 slide. Further, the upper end and the lower end of the spring adjusting bolt 11 are fitted to the spring guide 10. Due to this structure, the operation of the spring seat 7 when performing the pulling operation is restricted in the axial direction by the spring adjusting bolt 11, so that the operation in the rotational direction around the spring seat pin 7a of the spring seat 7 before and after the operation. Is suppressed. That is, it is possible to prevent changes in the load force of the spring 8 transmitted to the movable iron core 2 before and after the operation of the overcurrent tripping device 100, and it is possible to suppress variations in the operating current value.
  • the operating current value of the conventional overcurrent trip device is set to an arbitrary value before being incorporated into the electric circuit, but when the operating current value changes after being incorporated into the electric circuit, the current value set by the overcurrent is set.
  • the electric circuit is damaged because the circuit breaker does not open even if the set current value is exceeded and the current is not cut off due to the overcurrent. Was likely to occur.
  • the overcurrent trip device is composed of an electromagnet, and the operating current value is composed of the magnetic flux generated from the main circuit, the magnetic gap of the electromagnet, and the spring load given by the return spring.
  • the spring seat 7 serving as the seat of the spring 8 is provided with a hole 7b in the central portion, and the spring is provided in the hole 7b.
  • a cylindrical portion having a smooth surface shape of the spring adjusting bolt 11 for adjusting the load of 8 is fitted, and when the pulling operation is performed, the hole 7b and the cylindrical portion of the spring adjusting bolt 11 slide. By doing so, the position of the spring seat 7 before and after the pulling operation is determined in the axial direction by the cylindrical portion of the spring adjusting bolt 11.
  • the fixed core 1 is composed of a laminated core and includes a laminated magnetic steel plate 1b.
  • the fixed iron core 1 is preferably made of a laminated steel plate in order to suppress eddy currents, but it is not limited to the laminated structure and may be made of a block body ferromagnetic material such as an iron-based material.
  • the four fixed core bolts 1a penetrate the laminated magnetic steel plate 1b, the guide plate 16, the conductor front surface portion 3a, and the fixed core cover 14 in the direction of lamination, respectively, and fix these parts together.
  • the number of fixed iron core bolts 1a is not limited to this number as long as the above-mentioned parts can be fixed.
  • the conductor 3 of the overcurrent trip device 100 is provided with a structure of a conductor 3 provided at a position penetrating the fixed core 1 and a conductor front portion 3a provided on the front surface of the fixed core 1 in the stacking direction. It is connected to the circuit breaker 200 or the conductor of the electric circuit by the conductor connection hole 3b.
  • the number of conductor connection holes 3b is changed and provided according to the shape of the conductor to be connected.
  • the conductor 3 and the conductor front surface portion 3a may be provided as a single component or may be provided in combination of the two components.
  • FIG. 5 by fixing the conductor 3 to the fixed core 1 with the fixed core bolt 1a, the conductor 3 and the fixed core 1 are integrally configured.
  • the movable iron core 2 is provided with protrusions 2c on each of the surfaces in contact with the guide plate 16, and the guide plate 16 corresponding to the protrusions 2c is provided at a position in contact with the protrusions 2c.
  • a groove 16a is provided.
  • FIG. 8 is a component development view showing a modified example of the movable iron core and the guide plate of the overcurrent trip device according to the first embodiment.
  • the movable iron core 2 is provided with the protrusion 2c
  • the guide plate 16 is provided with the groove portion 16a.
  • the movable iron core 2 is provided with the groove portion 2d. May be provided and the guide plate 16 may be provided with a protrusion 16b.
  • FIG. 9 is a front sectional view showing a state after the tripping operation of the overcurrent trip device 100 according to the first embodiment, and is a front sectional view taken along the line AA of FIG.
  • the holding latch 51 is connected to an opening / closing mechanism (not shown) provided in the circuit breaker 200, and is in contact with the latch drive unit 2b of the movable iron core 2 on one side so as to be rotatable. It is fixed.
  • the movable core 2 is subjected to a load force from the spring 8, and as shown in FIG. 3, the initial position facing the fixed core 1 so as to have a magnetic gap 4. It is placed at (position before operation).
  • the movable iron core 2 When an accident current flows through the conductor 3 and the electromagnetic driving force acting on the movable iron core 2 becomes larger than the load force of the spring 8, the movable iron core 2 has a magnetic gap from the initial position (position before operation) as shown in FIG. Move to the tripping position where 4 becomes zero.
  • the arrows shown in the fixed core 1 and the movable core 2 indicate the magnetic circuit ⁇ , and the conductor 3 indicates the fault current I.
  • the latch drive unit 2b rotates the holding latch 51, whereby the latch is released.
  • the opening / closing mechanism of the circuit breaker 200 connected to the holding latch 51 operates to open the circuit breaker 200.
  • the conductor 3 connected to the main circuit of the circuit breaker 200 and the conductor 3 are formed so as to surround the conductor 3 and a part thereof is open.
  • the fixed core 1 is arranged at an open position of the fixed core 1 via a magnetic gap 4 between the fixed core 1 and movably arranged by an electromagnetic force when an overcurrent flows through the conductor 3.
  • the movable core 2 is provided, and the fixed core 1 is arranged in contact with the conductor 3, and the movable core 2 is in contact with the conductor 3 when no overcurrent is flowing through the conductor 3 before operation. It is a thing.
  • a spring 8 for applying a return load to the movable iron core 2 and one end thereof are connected to the movable iron core 2 and the other end portion is a fixed iron core 1. It has a lever 5 connected to a spring 8 provided on the outside of the. Further, according to the overcurrent trip device 100 according to the first embodiment, the spring 8 and the lever 5 are supported on the outside of the fixed iron core 1 by the guide plate 16, and the spring 8, the lever 5 and the guide plate 16 are supported by the guide plate 16. It is provided integrally with the conductor 3 together with the fixed iron core 1. Therefore, according to the overcurrent trip device 100 according to the first embodiment, it is possible to realize the miniaturization of the overcurrent trip device 100.
  • FIG. 10 is a front sectional view of the overcurrent trip device according to the second embodiment.
  • those having the same reference numerals as those used for explaining the overcurrent tripping device 100 in the first embodiment show the same or corresponding configurations, and the description thereof will be omitted.
  • the region shown in cross section shows a cross section passing through the center of the shaft of the spring adjusting bolt 11.
  • the position of the movable iron core 2 provided in the overcurrent trip device 100 shown in the first embodiment is different, and the connection portion is connected between the latch drive unit 2b and the movable iron core 2. 2e is provided.
  • the direction in which the latch drive unit 2b operates the opening / closing mechanism is indicated by an arrow in FIG. Since the movable iron core 2 is provided on the side of the latch drive unit 2b on the side separated from the conductor 3, a connection portion 2e is provided between the movable iron core 2 and the latch drive unit 2b. Further, since the operating direction is toward the conductor 3, the latch drive unit 2b is provided in a hook shape, and the rotation shaft 6 of the lever 5 is provided outside the movable iron core pin 2a and the spring seat pin (not shown). Has been done. In the overcurrent tripping device 100 according to the second embodiment, the fixed iron core 1 is arranged in contact with the conductor 3 without a gap, as in the first embodiment.
  • the fixed core 1 and the conductor 3 are provided so as to be fitted to each other, and the movable core 2 receives the load force of the spring 8 in the direction in which the magnetic gap 4 widens, and the movable core 2 is supported by the conductor 3 to support the movable core 2. Since the structure is fixed, the external dimensions of the overcurrent tripping device 100 can be reduced in size and weight.
  • the overcurrent tripping device 100 As described above, according to the overcurrent tripping device 100 according to the second embodiment, the position of the movable iron core 2 is provided on the side of the latch drive unit 2b separated by the conductor 3, and the opening / closing mechanism is operated. Since it is different from the first embodiment, the overcurrent tripping device 100 can be installed even when the operating direction of the opening / closing mechanism is different.
  • FIG. 11 is a side sectional view showing a schematic configuration of the circuit breaker 200 according to the third embodiment.
  • the circuit breaker 200 according to the third embodiment will be described with reference to the drawings.
  • the overcurrent trip device 100 shown in the first embodiment or the second embodiment is incorporated in the circuit breaker 200, and the overcurrent trip device 100 is in a closed pole state.
  • the opening / closing mechanism of the circuit breaker 200 is operated.
  • FIG. 11 shows a circuit breaker 200 inserted in the fixed frame 70.
  • the upper conductor 53 and the lower conductor 54 are arranged in the lower part of the arc extinguishing chamber 52 in which the arc extinguishing space is formed when the current is applied.
  • the fixed side main contact 55 is connected to the upper conductor 53.
  • One lower conductor 54 is connected to the movable conductor 57 via the flexible conductor 56, and the movable side main contact 58 is provided at a position facing the fixed side main contact 55 at the end of the movable conductor 57.
  • the movable conductor 57 rotates about the rotation shaft 59, and the opening pole is performed by the opening pole spring 60 and the closing pole is performed by the actuator 61.
  • the overcurrent trip device 100 is arranged in the middle of the lower conductor 54.
  • a lower conductor 54 is connected to the conductor 3 of the overcurrent trip device 100, and a main circuit current flows. Further, the overcurrent trip device 100 is engaged with the latch 64 by the latch drive link 63.
  • the latch drive link 63 shown by the broken line in FIG. 11 corresponds to a portion that transmits the movement of the lever 5 of the overcurrent trip device 100 described above to the holding latch 51, and the latch 64 is based on this operation. Means to be driven.
  • the overcurrent trip device 100 arranged in the lower conductor 54 operates by detecting the overcurrent, the operation is transmitted to the latch 64 by the latch drive link 63, and the latch 64 latches. It rotates clockwise around the shaft 65, the engagement with the movable conductor 57 is released, and the movable conductor 57 rotates clockwise around the rotation shaft 59, so that the pole opening operation is performed.
  • the fixed side main contact 55 and the movable side main contact 58 are housed inside the arc extinguishing chamber 52.
  • a fixed-side arc contactor 66 and a movable-side arc contactor 67 are arranged above the fixed-side main contact 55 and the movable-side main contact 58, and an arc is generated at the time of interruption.
  • the fixed-side arc contactor 66 and the movable-side arc contactor 67 are separated from each other after the fixed-side main contact 55 and the movable-side main contact 58 are opened in the opening operation, so that the arc is set to the fixed-side main contact. It is designed to prevent the contact 55 and the movable side main contact 58 from being generated, and to prevent and protect the main contact portion from melting. Further, in order to commutate the generated arc to the upper part of the arc extinguishing chamber 52 on the upper part of the fixed side arc contactor 66 and the movable side arc contactor 67, the fixed side arc horn 68 and the movable side arc horn 69 are arranged.
  • the structure of the circuit breaker 200 described with reference to FIG. 11 is an example, and the structure of the circuit breaker 200 is not limited to the configuration of FIG.
  • the current flowing in the main circuit of the circuit breaker 200 is detected by the overcurrent trip device 100, and the operation of the overcurrent trip device 100 disengages the movable conductor 57 and the latch 64 to open the circuit breaker 200.
  • a structure other than the circuit breaker 200 shown in FIG. 11 may be used as long as it is configured to cause the circuit breaker.
  • the circuit breaker 200 has the arc extinguishing chamber 52 in which the arc extinguishing space is formed, the fixed side main contact 55 arranged on the lower side of the arc extinguishing chamber 52, and the fixed side main.
  • the movable side main contact 58 arranged so as to be detachable from the contact 55, and the overcurrent flowing between the fixed side main contact 55 and the movable side main contact 58 are detected and the movable side main contact 58 is driven in the tripping direction.
  • the overcurrent trip device 100 is provided with the overcurrent trip device 100, and the overcurrent trip device 100 is the overcurrent trip device according to the first embodiment or the second embodiment.
  • the circuit breaker 200 since the overcurrent trip device 100 shown in the first embodiment or the second embodiment is incorporated, the overcurrent trip device in the circuit breaker 200 is incorporated.
  • the installation space of 100 can be reduced, and as a result, the circuit breaker 200 can be miniaturized.

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Abstract

La présente invention permet d'obtenir : un dispositif de déclenchement par surintensité capable d'obtenir une miniaturisation du dispositif ; et un disjoncteur l'utilisant. Un dispositif de déclenchement par surintensité (100) comprend : un conducteur (3) connecté au circuit principal d'un disjoncteur (200) ; un noyau de fer fixe (1) formé de manière à entourer le conducteur (3) et partiellement ouvert ; et un noyau de fer mobile (2) qui est disposé au niveau de la position ouverte du noyau de fer fixe (1) et entre le noyau de fer fixe (1) et le noyau de fer mobile (2) avec un entrefer magnétique (4) entre ceux-ci, et disposé de manière mobile par la force électromagnétique lorsqu'une surintensité circule à travers le conducteur (3) le noyau de fer fixe (1) est disposé en contact avec le conducteur (3), et le noyau de fer mobile (2) est en contact avec le conducteur (3) lorsqu'aucune surintensité ne circule à travers le conducteur (3) avant le fonctionnement.
PCT/JP2020/047083 2020-12-17 2020-12-17 Dispositif de déclenchement par surintensité et disjoncteur l'utilisant WO2022130552A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20965940.8A EP4266343A4 (fr) 2020-12-17 2020-12-17 Dispositif de déclenchement par surintensité et disjoncteur l'utilisant
JP2022569411A JP7412600B2 (ja) 2020-12-17 2020-12-17 過電流引外し装置およびこれを用いた回路遮断器
PCT/JP2020/047083 WO2022130552A1 (fr) 2020-12-17 2020-12-17 Dispositif de déclenchement par surintensité et disjoncteur l'utilisant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/047083 WO2022130552A1 (fr) 2020-12-17 2020-12-17 Dispositif de déclenchement par surintensité et disjoncteur l'utilisant

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WO2022130552A1 true WO2022130552A1 (fr) 2022-06-23

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PCT/JP2020/047083 WO2022130552A1 (fr) 2020-12-17 2020-12-17 Dispositif de déclenchement par surintensité et disjoncteur l'utilisant

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EP (1) EP4266343A4 (fr)
JP (1) JP7412600B2 (fr)
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Publication number Priority date Publication date Assignee Title
JPS60119705A (ja) * 1983-12-01 1985-06-27 Mitsubishi Mining & Cement Co Ltd 電磁引外し装置
JPH0160334U (fr) * 1987-10-07 1989-04-17
JPH02108236U (fr) * 1981-03-10 1990-08-28

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29723307U1 (de) * 1997-04-11 1998-08-06 AEG Niederspannungstechnik GmbH & Co KG, 24534 Neumünster Schneller Überstromauslöser für Gleichstromschnellschalter
AU2016281164B2 (en) * 2015-06-19 2018-11-01 Mitsubishi Electric Corporation Overcurrent tripping device and circuit breaker employing same
JP7109664B2 (ja) * 2019-05-16 2022-07-29 三菱電機株式会社 過電流引外し装置およびこれを用いた回路遮断器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02108236U (fr) * 1981-03-10 1990-08-28
JPS60119705A (ja) * 1983-12-01 1985-06-27 Mitsubishi Mining & Cement Co Ltd 電磁引外し装置
JPH0160334U (fr) * 1987-10-07 1989-04-17

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4266343A4 *

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EP4266343A4 (fr) 2024-03-06
JP7412600B2 (ja) 2024-01-12
EP4266343A1 (fr) 2023-10-25
JPWO2022130552A1 (fr) 2022-06-23

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