WO1991000609A1 - Disjoncteur - Google Patents

Disjoncteur Download PDF

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Publication number
WO1991000609A1
WO1991000609A1 PCT/JP1990/000835 JP9000835W WO9100609A1 WO 1991000609 A1 WO1991000609 A1 WO 1991000609A1 JP 9000835 W JP9000835 W JP 9000835W WO 9100609 A1 WO9100609 A1 WO 9100609A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
contact
limiting contact
current limiting
circuit breaker
Prior art date
Application number
PCT/JP1990/000835
Other languages
English (en)
Japanese (ja)
Inventor
Terumi Shimano
Kuniyoshi Sakai
Tomoyoshi Saito
Kinichi Shioda
Hiroshi Suzuki
Wataru Teraoka
Kazuhiko Kato
Original Assignee
Hitachi, Ltd.
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
Priority claimed from JP16664089A external-priority patent/JP2633959B2/ja
Priority claimed from JP1318752A external-priority patent/JP2711002B2/ja
Priority claimed from JP2067009A external-priority patent/JP2714216B2/ja
Application filed by Hitachi, Ltd. filed Critical Hitachi, Ltd.
Priority to EP90909849A priority Critical patent/EP0482197B1/fr
Priority to DE69030666T priority patent/DE69030666T2/de
Publication of WO1991000609A1 publication Critical patent/WO1991000609A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/107—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops
    • H01H77/108—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops comprising magnetisable elements, e.g. flux concentrator, linear slot motor

Definitions

  • the present invention relates to a circuit breaker, and more particularly to a circuit breaker suitable for improving and limiting the current limiting performance of a current limiter having an electromagnetic repulsion mechanism.
  • this type of equipment consists of a movable contact on the load side (the movable contact block of the []) connected to the closing mechanism as described in Japanese Utility Model Publication No. 52-45-164.
  • a central movable contact (second movable contact block) having contacts at both ends provided opposite thereto and rotating around a central portion as a fulcrum, and a movable contact at the center opposed to the central movable contact.
  • a movable contact on the power supply side provided in the manner described above.
  • the movable contact on the load side and the movable contact on the power supply side are each rotatably supported.
  • the directions of the currents flowing through the load-side movable contact and the central movable contact are opposite to each other, and the directions of the current flowing through the central movable contact block and the power-side movable contact are also opposite.
  • Direction In this conventional configuration, when a large current flows, a repulsive force is generated between the movable contact on the load side and the movable contact on the center due to an omnidirectional current, and the movable contact on the center and the power A repulsive force due to a different direction current also occurs between the movable contacts on the side. As a result, a couple around the fulcrum at the center acts on the central movable contact, and the central movable contact rotates in the direction to separate the contacts.
  • An object of the present invention is to provide a small circuit breaker that can increase the opening speed and is excellent in current limiting effect.
  • a circuit breaker comprises a fixed conductor having a power supply terminal at one end and a load terminal at the other end, a fixed conductor having one end connected to the power supply terminal and a conductive connection means at the other end, Is connected to the conductive connecting means, faces the fixed conductor, has a current-limiting contact at the other end, and is rotatably supported at a central portion thereof. And a movable contact base having a movable contact opposed to the current limiting contact. The movable contact block is connected to an opening / closing mechanism to perform opening / closing and tripping operations.
  • the tripping operation of the opening / closing mechanism is performed by a tripping device that detects an overcurrent in the electric circuit from the movable contact block to the load side terminal and causes the opening / closing mechanism to perform the tripping operation.
  • a tripping device that detects an overcurrent in the electric circuit from the movable contact block to the load side terminal and causes the opening / closing mechanism to perform the tripping operation.
  • the current limiting contact block has a repulsion portion at one end for generating a repulsive force due to a reverse current between the fixed conductor and the fixed conductor.
  • a large current such as a short circuit occurs, the repulsive force between the movable contact block and the current limiting contact block, and It rotates with the repulsive force between the fixed conductor and the current limiting contact point as a couple, and separates the current limiting contact and the movable contact.
  • the current limiting contact block is formed by couple using the repulsive force between the fixed conductor and the current limiting contact block that are conductively connected. Since the motor is rotated, it is possible to obtain a small circuit breaker having a high opening speed, an excellent current limiting effect, and a small size.
  • FIG. 1 is a side sectional view showing the configuration of a circuit breaker according to a first embodiment of the present invention
  • FIGS. 2 and 3 are repulsive states of main parts of the circuit breaker according to the present embodiment, respectively.
  • FIG. 4 is a side view showing a configuration of a main part of a circuit breaker according to a second embodiment of the present invention.
  • FIG. 5 is a side view showing a circuit breaker according to a third embodiment of the present invention.
  • FIG. 6 is a side view showing a configuration of a main part of a circuit breaker according to a fourth embodiment of the present invention
  • FIG. 7 is a fifth embodiment of the present invention.
  • b) and (c) are side sectional views of the main part and current-limiting contact, respectively.
  • Fig. 8 shows a modified example of this embodiment.
  • Fig. 8 (a) and (b) show the side view of the main part and the cross section of the current limiting contact block, respectively.
  • Fig. 9 and Fig. 9 show a sixth embodiment of the present invention.
  • (A) and (b) are side sectional views and a sectional view of a sliding portion, respectively, showing the structure.
  • Figs. 10 and 11 are respectively
  • FIG. 12 shows a side view and a perspective view of a main part of a seventh embodiment of the present invention
  • FIG. 12 shows an eighth embodiment of the present invention, wherein (a), (b), and (c) denote main parts of i, respectively.
  • FIG. 17 is a tenth embodiment of the present invention.
  • (a), (b), (c) and (d) are The side sectional view showing the configuration, the sectional view of the magnetic drive unit 80, the sectional view of the magnetic drive unit 80a, and the sectional view of a modification of the magnetic drive unit 80 are shown in FIGS.
  • Fig. 19 is a side sectional view showing the configuration of the eleventh embodiment of the present invention, and Fig. 19 is a side view showing the essential parts of the eleventh embodiment of the present invention.
  • the configuration of the circuit breaker of the present embodiment is as follows.
  • the case 1 as a housing is provided with a power supply side terminal 15 at one end and a load side terminal 28 at the other end.
  • a fixed conductor 15 connected to the power supply terminal 18 is provided at the bottom of case 1.
  • a current limiting contact stand 12 is rotatably supported by a bin 17.
  • the current limiting contact base 1 2 has a current limiting contact 11 at one end 12 b, and a repulsive portion 12 a formed at the other end can be used as a conductive connection means with the fixed conductor 15.
  • a conductor 14 is provided.
  • a movable contact stand 9 is provided above the current limiting contact stand 12, and the movable contact stand 9 is connected to the closing mechanism 4.
  • the opening / closing mechanism 4 is manually operated with the handle 3 or an overcurrent detection is performed as an oil dash-bot relay 5 and a movable iron piece 19 which is sucked by the movable iron piece 19 to conceal a trip.
  • an overcurrent detection is performed as an oil dash-bot relay 5 and a movable iron piece 19 which is sucked by the movable iron piece 19 to conceal a trip.
  • the movable contact block 9 is closed or tripped.
  • the opening / closing mechanism having a toggle link mechanism is provided.
  • the two-joint link of the part 4 works, and the interlocking shaft 7 that rotates the movable contact stand 9 for three poles located at one end of the opening / closing mechanism part 4 rotates. Therefore, the movable contact block 9 moves as a whole with the bin 16 as the center of rotation, whereby the movable contact 10 positioned at one end of the movable contact block 9 becomes a current-limiting contact 1 facing the movable contact block 9. It moves to the position where it comes into contact with 1.
  • the current limiting contact 1 2 having one end of the current limiting contact 1 1 is concealed below the opening / closing mechanism 4 in the direction facing the movable contact stand 9.
  • Pin 1 7 Holds the rotation center of the current limiting contact block 1 2, and the return panel 13 provided in this bin 17 urges the current limiting contact block 1 2 clockwise.
  • the return spring 1 3, (i) The One end is engaged with the mold case 1, and the other end is engaged with the repulsion portion 12 a of the current limiting contact block 12.
  • One end of the repulsion portion 12a of this current limiting contact block is connected to a flexible conductor 14 made of a flexible copper fuel wire, and supplies a current from the fixed conductor 15 to the current limiting contact block 12.
  • the parallel portion 15a extending from the fixed conductor 15 is positioned parallel to the lower portion at a position facing the repulsion portion 12a of the current limiting contact block 12.
  • the contact pressure between the movable contact 10 and the current-limiting contact 11 is supplied by a contact spring 8 having the bin 16 serving as the center of rotation of the movable contact stand 9 and having a coaxial axis.
  • the movable contact stand 9 is connected to the load-side terminal 28 via an electric path 88 composed of a flexible conductor 88a and a coil section 88b connected thereto. Oil dash pot relay section 5
  • the parallel portion 15a since the parallel portion 15a is fixed, all the repulsive force generated between the repulsive portion 12a and the parallel portion 15a becomes a force for rotating the current limiting contact stand 12. Further, since the fixed conductor 15 and the current-limiting contact block 12 are connected by the conductor 14, there is no decrease in current due to arc generation at this portion, and the repulsion section 12 a The repulsion between the parallel parts 15a can be increased. Therefore, the opening speed of the current limiting contact block 12 can be made higher than the conventional one. Also, the fixed conductor 15 and the current-limiting contact block 12 can be brought close to each other, and the circuit breaker can be downsized.
  • the extension portion 12 c is connected to the repulsion portion 12 a, and the distance between the parallel conductors in which the current direction for performing the electromagnetic repulsion operation is different. Is made longer.
  • the connecting portion is constituted by the hinge 22 and the flexible conductor 24, and has a bent structure.
  • a part of the repulsion part 12 a of the current limiting contact base 12 can enter the closed part 20 formed in the parallel part ⁇ 5 a of the fixed conductor 15. It is composed. This is because the repulsive force between the edges on both sides of the opening 20 and the side surface of the repulsion portion 12a does not increase the contact pressures of the movable contact 10 and the current-limiting contact 11 and increases the intermediate current. The contact jump is kept low and the electromagnetic repulsion current limiting mechanism is activated only when a large current such as interruption occurs.
  • FIG. 6 shows a fourth embodiment of the present invention.
  • the portion of the fixed conductor 15 close to the power supply terminal 18 has a different direction of current flow from one end 1 b of the current-limiting contact block, which prevents electromagnetic repulsion generated in the form of couple.
  • the force that works in the direction is born.
  • a magnetic absorbing plate 25 is disposed on the fixed conductor 15 to absorb a magnetic force corresponding to the reverse effect.
  • an opening 23 is provided on the terminal 18 side of the fixed conductor 15 on the power supply side, and one end 12 b of the current-limiting contact block 12 is penetrated.
  • the magnetic absorption plate 25 can be made to maintain magnetic force. As shown in Fig.
  • the current limiting contact block 12 is made flat to increase the repulsion force, and reinforcement is provided to prevent deformation due to the repulsion force.
  • Fig. 7 (a) shows the configuration of the current limiting contact block
  • Fig. 7 (b) shows the main section of the AA.
  • Fig. 7 (c) shows the main section.
  • the current limiting contact block 12 is formed in a flat plate shape, and the reinforcement 30 is fixed at right angles thereto by caulking. As shown in FIG. 7 (c), it has the same width as the fixed conductor 15 so that the repulsion force received by the repulsion portion 12a from the parallel portion 15a can be greatly increased. It is configured as follows.
  • both edges of the flow contact stand 12 are bent to form a rising portion 12d for reinforcement.
  • the cross section of the main part is a U-shaped cross section as shown in FIG. 8 (b).
  • the reinforcement can be formed by bending, and the number of man-hours for manufacturing parts can be reduced.
  • a sliding portion 36 connected to the fixed conductor 5 is provided as a conductive connecting means, and the sliding portion 36 and the repulsive portion 12 a of the current-limiting contact base 12 are provided.
  • Contact with the contact part 1 2 e provided to extend and maintain electrical continuity, the position of the current limiting contact block 12 in the QN state of this embodiment, and the position of the current limiting contact block 1 2 in the case of rebound. are shown in FIGS. 9 (a) and 9 (b) by a solid line and a two-dot chain line, respectively.
  • the contact portion 12e slides while maintaining electrical continuity with the sliding portion 36 during the repulsion operation.
  • the heat generated by the intraocular flow contact stand 12 can be transmitted to the fixed conductor 15 via the contact portion 12e and the sliding portion 36, and the temperature rise can be reduced.
  • a seventh embodiment of the present invention will be described with reference to FIG. 10 and FIG. This embodiment particularly considers the aspects of closing and energizing the DC power supply and ensuring the cutoff distance for the cutoff performance.
  • the breaking distance is secured together with the miniaturization:: and it is also effective in terms of AC performance.
  • the opening and closing mechanism is provided.
  • the position of the contact block that has repelled the electromagnetic force is held at the repulsive position g until the complete interruption is completed.
  • the current-limiting switching mechanism is wrapped in another insulating mold case 58 to form a double insulating structure, which eliminates damage due to arcs generated at the time of interruption and adhesion of molten material, and provides highly reliable closing. It provides a mechanism.
  • the contact block operated by electromagnetic repulsion is moved to secure the breaking distance in accordance with the opening / closing operation by the handle operation, and the repulsion operation when a large current such as a short-circuit current flows.
  • the current limiting contact block is moved in the direction of repulsion even during opening and closing operations.
  • the contact block for electromagnetic repulsion provided for each phase is linked simultaneously with each pole, and the three-phase simultaneous repulsion mechanism is provided for the AC performance power supply in addition to securing the cutoff distance with the DC power supply. It is intended to improve the quality.
  • the movable contact block 12 is connected at two locations by two insulating shafts 17 and 54 penetrating through each pole, and is rotated around the bin 17 in a three-phase unit.
  • the movable contact stand provided for each pole is integrated into three phases by shafts 17 and 54, and the total electromagnetic force generated by the current flowing to each pole at the time of electromagnetic repulsion is obtained.
  • the contact block is operated by the sum.
  • the movable frame 57 of the mechanical part 4 is engaged with the three-phase interlocking shaft. Due to the opening operation of the part, the repulsion contact is also cultivated counterclockwise using the pin 17 as the rotation center at the same time for the three phases. As a result, the same breaking distance as that obtained when the electromagnetic repulsion is performed can be secured in the negative electrode state OFF.
  • the present embodiment is intended to prevent contact failure of the contacts by preventing lateral displacement of the current-limiting contact block due to the gap between the eye contact block and the bin.
  • pin 17 is held by frame 62, and movement in the direction perpendicular to the turning surface of current limiting contact block 12 is provided on both sides of bin 17 respectively. It is not regulated by the projections 62a and 62b.
  • FIG. 12 (a) is a view as seen from below the convection contact stand 12. Protrusions 62 a and 62 b from the frame 62 are provided on both sides of the bin 17 which is the rotation fulcrum of the current limiting contact block 12.
  • FIG. 12 (b) shows a state in which the current limiting contact block 12 is shifted laterally from this state. In the same figure, the current limiting contacts 1 and 2 are shown displaced counterclockwise around the bin 17 by the dashed-dotted line.
  • the current limiting contact block 1 2 has the protrusions 6 2 a of the frame 6 2, Contact with 6 2 b, no more lateral displacement.
  • An enlarged view of the pin 17 in this state is shown in FIG. 12 (c).
  • the gap with the pin 17 is A at the central position of the current-limiting contact stand 12, but the gear is B at the central position of the lateral displacement state indicated by the dashed line.
  • the current limiting contact 8 is restricted from lateral displacement even if there is a gap B.
  • the distance from the pin to the projections 62a and 62b can be set arbitrarily, lateral displacement can be regulated even if the projection 62b is not located near the contact, preventing insulation deterioration due to arcing. it can.
  • the frame 62 is an insulating material, the prevention of the insulating deterioration is further improved. In addition, if only insulation deterioration is prevented, it is effective to provide only the protrusion 62 a on the load of the pin 17.
  • the above is an example of preventing the lateral displacement of the current limiting contact block 12.
  • the same can be applied to the movable contact block 9, and a one-sided repulsive circuit block to which the current limiting contact block 12 is fixed is provided. The same effect can be obtained by implementing only the movable contact blocks of breakers and non-current-limiting circuit breakers.
  • a guide bin 64 for performing left and right blurring at the left end portion of the current limiting contact block 12 is caulked to the current limiting contact block 12.
  • the abutment of the side bin with the mold is a spherical shape that slides In this case, measures were taken to reduce the coefficient of friction due to sliding.
  • a ninth embodiment of the present invention will be described with reference to FIGS.
  • the present embodiment is provided with at least two sets of electromagnetic repulsion mechanisms for rotating the current limiting contact base by using the electromagnetic repulsive force generated on both sides of the rotation center of the current limiting contact base as a couple. . Achieved by circuit breakers.
  • a second current limiting contact block 72 is provided below the current limiting contact block 12 and supported by the bin 71 and repelled by using a couple.
  • a flexible stranded wire 14 is connected to one end of the current limiting contact block 12, and its extension is connected to one end of the fixed contact block 73.
  • a fixed contact 74 is arranged at the other end of the fixed contact base 73, and a movable contact 75 is arranged on the second current limiting contact base 22 so as to abut the fixed contact 74.
  • the pin 71 is provided with a panel 76 for urging the second current-limiting contact block 72 counterclockwise.
  • a flexible stranded wire 14 is connected to the other end of the second current limiting contact block 72 opposite to the movable contact 75 with the pin 71 connected, and the extension is connected to one end of the fixed conductor 15. It is connected.
  • the current limiting contact block ⁇ 2 is rotatable around the bin 17, the electromagnetic repulsion between the movable contact block 9 and the current limiting contact block 12, and the current limiting contact block 1 2 and the fixed conductor 15 It is arranged and configured to rotate with the electromagnetic repulsion between them as a couple.
  • the second current limiting contact block 72 is rotatable about the bin 71, so that the electromagnetic repulsion between the fixed conductor 15 and the second current limiting contact block 72 and the fixed contact block 7 3 And the second recurrent contact block 7 2 as the couple It is arranged so that it rotates.
  • the first current limiting contact block 1 2 and the second current limiting contact block 7 2 return to their original positions by the panels 13 and 7 1, and the opening / closing mechanism operates to turn on the second current limiting contact block.
  • the state is as shown in the figure.
  • the opening speed of the current limiting contact block can be greatly improved, and the arc voltage is further doubled by the two current limiting contact blocks, so that the current limiting performance is greatly improved. Is achieved.
  • an electromagnetic repulsion mechanism that uses a couple to open the circuit breaker can be provided at two locations, thereby limiting the current limit. As the speed of opening the contact block increases and the opening distance increases, the arc voltage increases and the current limiting effect is greatly enhanced.
  • the fixed conductor 15 facing the end 12b opposite to the current limiting contact 11 of the current limiting contact block 12 is arranged in parallel.
  • the magnetic flux holding means in the portion 15a the magnetic repulsive force and the speed of the repulsive pole after the repulsion are maintained.
  • a magnetic flux holding means is provided on the side opposite to the arc-extinguishing chamber portion to prevent the influence of the scattering of the molten material at the time of interruption, thereby improving the operation reliability.
  • the magnetic drive device 80 as the magnetic flux holding means is made of a magnetic material, and its AA cross section has a U-shaped cross section as shown in FIG. 17 (b). a is disposed, and a repulsion portion 12a is disposed at a position facing the parallel portion 15a.
  • a clockwise magnetic flux is generated around the repulsion portion 12a by the current flowing through the repulsion portion 12a as shown by a thin arrow in FIG. 17 (b).
  • the repulsion part 12a moves in the direction of the thick arrow to the position g indicated by the two-dot chain line due to the repulsion with the parallel part 15a.
  • the magnetic flux passes through the magnetic drive device 80, it is possible to prevent a decrease in the magnetic flux during the movement, and the moving force of the repulsion portion 12a is maintained by maintaining the driving force of the magnetic flux in the direction of the thick arrow. You. As a result, the speed of the ocular flow contact stand 12 after opening is maintained, and a large current limiting effect can be obtained.
  • the magnetic drive device S80 in the mold walls 40a, 40b, and 40c immediately below the mechanism, the influence on the operation of the molten material scattering when shut off is prevented. And reliability can be improved.
  • a magnetic drive device 80a may be provided between the movable contact stand 9 and the current limit contact stand 12 in order to further improve the corner flow effect.
  • the magnetic drive device 80a is also formed of a magnetic material, and its BB section has a U-shaped section as shown in FIG. The magnetic flux generated by the current flowing through the contact blocks 12 passes through the magnetic material. Therefore, a decrease in magnetic flux during movement of the movable contact block 9 and the current limiting contact block 12 is prevented, and the slide after opening is maintained.
  • the magnetic drive shield 80 is provided with a U-shaped magnetic plate 82 on the outer periphery of the repulsion portion 12a as shown in FIG. A configuration may be adopted in which the top dimension a is made small so that the magnetic drive device works effectively.
  • magnetic drive shields 80b and 80c as magnetic flux holding means are provided on the fixed conductor 15 and the fixed contact block 73 of the circuit breaker of the ninth embodiment of the present invention, respectively. It is a thing.
  • the electromagnetic repulsion force between the parallel portion 15a of the fixed conductor and the second current-limiting contact block 72a is used, and the contacts 74, 75 are formed by the magnetic drive device g80c. It increases the opening speed.
  • This embodiment is a circuit breaker having a structure in which a fixed contact block 78 is fixed to one end of a fixed conductor 15 with a fixed screw 97, and a magnetic drive device 80b is connected via the fixed contact block 78. Is fixed to the fixed conductor 15.
  • the current limiting contact block 1 2 repels before the repulsion of the second current limiting contact block 72 starts.
  • the current limiting contact block 12 is electrically connected to the ⁇ th fixed conductor 15 via the flexible conductor 14 and the second current limiting contact block 72.
  • the magnetic drive device 80 b is fixed to the fixed contact block 78 by a fixing screw 99.
  • the power-supply-side conductor portion consisting of the fixed conductor 15, the fixed contact block 78, and the magnetic drive device 8 Ob can be pre-assembled and handled as a single component. This has the effect of improving workability.
  • the magnetic drive device g may be fixed to the fixed conductor 15.
  • the electromagnetic type using an oil dashpot as the tripping device is disclosed.
  • the tripping device g is not limited to this, and the current of the electric circuit is controlled by a current transformer or the like. It may be of an electronic type that detects and applies a magnetic tripping device g by an electronic circuit, or a thermodynamic type that uses bimetal or the like, or a combination thereof.
  • the electric circuit 88 is connected to the flexible conductor 88a connected to the movable contact block and the flexible conductor 88a to pass through the current transformer and to the load terminal.
  • the electric circuit 88 is connected to the movable conductor 88a connected to the movable contact block and to the flexible conductor 88a. And a heater (not shown) arranged to overheat the bimetal and reach the load side terminal.
  • the current limiting contact base is rotatably supported at the center, one end is opposed to the movable contact base, and the other end is opposed to the fixed conductor.
  • the electromagnetic repulsion between the movable contact block and the current-limiting contact block and the electromagnetic repulsion between the fixed conductor and the current-limiting contact block are used as couples.
  • the dimension between the current limiting contact block and the fixed conductor can be reduced, and the opening speed of the current limiting contact block provides a high speed, excellent breaking performance, and a small circuit breaker. It can be.

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  • Electromagnetism (AREA)
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Abstract

Un disjoncteur pourvu d'un mécanisme de limitation de courant par répulsion électromagnétique permet de résoudre le problème technique qui consiste à améliorer la limitation du courant en augmentant la vitesse d'ouverture de contact d'une lame de contact d'un disjoncteur de type à limitation de courant, tout en réduisant le dispositif à des dimensions compactes. La lame de contact de limitation de courant est centralement soutenue de manière rotative. Une de ses extrémités fait face à une lame mobile de contact et l'autre extrémité fait face à un conducteur fixe, étant électriquement connectée à celui-ci. Une force électromagnétique de répulsion qui s'exerce entre la lame mobile de contact et la lame de contact de limitation de courant, et une force électromagnétique de répulsion qui s'exerce entre le conducteur fixe et la lame de contact de limitation de courant, forment un couple de forces, ce qui permet d'augmenter la vitesse d'ouverture de contact et de diminuer la distance entre la lame de contact de limitation de courant et le conducteur fixe. On obtient ainsi un disjoncteur de dimensions réduites, assurant d'excellentes performances.
PCT/JP1990/000835 1989-06-30 1990-06-27 Disjoncteur WO1991000609A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP90909849A EP0482197B1 (fr) 1989-06-30 1990-06-27 Disjoncteur
DE69030666T DE69030666T2 (de) 1989-06-30 1990-06-27 Ausschalter

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP1/166640 1989-06-30
JP16664089A JP2633959B2 (ja) 1989-06-30 1989-06-30 回路遮断器
JP1/318752 1989-12-11
JP1318752A JP2711002B2 (ja) 1989-12-11 1989-12-11 回路遮断器
JP2067009A JP2714216B2 (ja) 1990-03-19 1990-03-19 回路遮断器
JP2/67009 1990-03-19

Publications (1)

Publication Number Publication Date
WO1991000609A1 true WO1991000609A1 (fr) 1991-01-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/000835 WO1991000609A1 (fr) 1989-06-30 1990-06-27 Disjoncteur

Country Status (3)

Country Link
EP (1) EP0482197B1 (fr)
DE (1) DE69030666T2 (fr)
WO (1) WO1991000609A1 (fr)

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CN106409627A (zh) * 2015-08-03 2017-02-15 上海良信电器股份有限公司 断路器跳闸机构

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JP2894052B2 (ja) * 1990-12-11 1999-05-24 株式会社日立製作所 回路遮断器
JP4321296B2 (ja) * 2004-02-19 2009-08-26 富士電機機器制御株式会社 反発形回路遮断器の接触子装置
ITMI20072204A1 (it) * 2007-11-21 2009-05-22 Abb Spa Dispositivo di interruzione uni-polare o multi-polare a doppia interruzione
CN109216125B (zh) * 2017-07-06 2023-07-25 王静洋 一种高分断无弧断路器

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JPS468358B1 (fr) * 1967-01-27 1971-03-02
JPS5349057U (fr) * 1976-09-29 1978-04-25
JPS5553840A (en) * 1978-10-16 1980-04-19 Westinghouse Electric Corp Circuit breaker
JPS5556329A (en) * 1978-10-16 1980-04-25 Westinghouse Electric Corp Current limiting circuit breaker
JPS58154114A (ja) * 1982-03-08 1983-09-13 株式会社東芝 限流装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106409627A (zh) * 2015-08-03 2017-02-15 上海良信电器股份有限公司 断路器跳闸机构

Also Published As

Publication number Publication date
DE69030666D1 (de) 1997-06-12
DE69030666T2 (de) 1997-10-16
EP0482197A4 (en) 1992-11-25
EP0482197A1 (fr) 1992-04-29
EP0482197B1 (fr) 1997-05-07

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