WO2015186245A1 - 開閉装置 - Google Patents
開閉装置 Download PDFInfo
- Publication number
- WO2015186245A1 WO2015186245A1 PCT/JP2014/065075 JP2014065075W WO2015186245A1 WO 2015186245 A1 WO2015186245 A1 WO 2015186245A1 JP 2014065075 W JP2014065075 W JP 2014065075W WO 2015186245 A1 WO2015186245 A1 WO 2015186245A1
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- WIPO (PCT)
- Prior art keywords
- arc
- contact
- magnet
- fixed contact
- magnetic
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
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- 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
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
- H01H50/38—Part of main magnetic circuit shaped to suppress arcing between the contacts of the relay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Definitions
- This invention relates to a switching device such as a switch, a switch, a circuit breaker, an electromagnetic contactor, a relay, etc., for cutting off current.
- the arc generated between the contacts is stretched to increase the arc resistance, and the arc voltage is increased to cut off the current.
- the technique of extending the arc is important.
- the magnetic field lines of a permanent magnet are linked to the arc, and the arc length is extended by applying a Lorentz force to the arc (see, for example, Patent Document 1).
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a switchgear that can ensure sufficient breaking reliability even when a small magnet is used regardless of the direction of current. .
- the switchgear according to the present invention includes a fixed contact having a fixed contact, a movable contact having a movable contact, an opening / closing mechanism for performing an opening / closing operation of the fixed contact and the movable contact, a magnet, and one end portion.
- a switchgear having a long magnetic body that is in contact with the magnetic pole surface of the magnet and extends between at least one of the fixed contact and the movable contact and the magnet the fixed contact and At least one of the movable contacts is provided with a suction bar integrated contact that is integrally formed with the magnetic body using a magnetic material.
- the arc generated between the contacts can be driven in the direction of the magnet along the side surface of the suction rod, which is a long magnetic body, regardless of the direction of the current.
- the arc travels and expands in the direction of the magnet while being driven along the side surface of the suction rod, so that the arc is rapidly cooled.
- FIG. 1 and FIG. 2 show the technology that forms the basis of the present invention.
- FIG. 1 is a side sectional view showing the main configuration of an opening / closing mechanism part and an arc extinguishing chamber part in an open state of the opening / closing device.
- the switchgear 100 as the basis of the present invention includes a fixed contact 1 having a fixed contact 1a, a movable contact 2 having a movable contact 2a, and opening / closing of the fixed contact 1a and the movable contact 2a.
- the other end of the suction bar 3 is disposed so as to be close to the arc generation region between the fixed contact 1 and the movable contact 2, and when the contacts 1a and 2a are separated, Magnet 4 that controls and expands arc A generated in step 1, and an attracting rod made of a magnetic material having one end disposed in the vicinity of the arc generation region and the other end surface-bonded to one magnetic pole surface of magnet 4 3, the arc A is stretched along the longitudinal side surface of the attracting rod 3, which is a magnetic body, by the magnetic field generated by the magnet 4.
- the switchgear 100 is provided with a fixed-side terminal portion 11 and a movable-side terminal portion 12 connected to an external power circuit at both ends of a casing constituted by a case 101 made of an insulator.
- a casing constituted by a case 101 made of an insulator.
- an arc extinguishing chamber 102 in which a fixed contact 1a is arranged at one end and a magnet 4 is arranged at the other end.
- the arc extinguishing chamber 102 has a fixed contact 1 formed integrally with the fixed-side terminal portion 11 and provided with a fixed contact 1a at a predetermined portion, and a movable contact 2a that contacts and separates from the fixed contact 1a.
- a long magnetic body having one end disposed in the vicinity of the arc generation region so as to face the space between the movable contact 2 provided so as to be fixed, the fixed contact 1 and the movable contact 2
- a magnet 4 is disposed on the end face of the other end of the suction bar 3 on the side, and a magnetic pole face facing this end face is surface-bonded to drive the arc along the peripheral side surface of the suction bar 3.
- Reference numeral 15 denotes a flexible conductor.
- the suction rod 3 can obtain the same effect even when a round bar, a rectangular parallelepiped, a cylindrical shape, or a shape such as a polygonal rod is used. It is protected by a magnetic insulating cover 3c provided so as to face an area where an arc A having a current-carrying direction in front of the paper surface, and a magnet reinforcing plate 6 described later is attached to the magnet 4.
- a magnetic insulating cover 3c provided so as to face an area where an arc A having a current-carrying direction in front of the paper surface, and a magnet reinforcing plate 6 described later is attached to the magnet 4.
- the structure of the part which is not shown in figure is the same as that of the prior art of patent document 1, etc., for example.
- the magnetic lines of force M generated from the permanent magnet 41 are induced by the attracting rod 3, and the interlinkage magnetic field to the arc from the tip of the attracting rod 3 toward the arc. Will occur.
- the Lorentz force acts on the arc by the interlinkage magnetic field, and the arc is driven in the lower direction in FIG.
- the magnetic lines of force M formed so as to wrap around the arc driven in the stage (I) from the tip of the attracting rod 3 to the S pole side of the permanent magnet 41 are chained. Come to fuck.
- This interlinkage magnetic field attracts the arc to the arc extension space that extends to the side surface in the longitudinal direction of the suction rod.
- the arc drawn into the arc extension space is drawn further to the back by the magnetic force line M generated on the normal from the side surface of the suction bar 3.
- the strength of the magnetic field generated from the side surface of the suction rod 3 increases, so that it becomes difficult for the arc to be detached from the suction rod 3, and the arc is stably transferred to the rear side (right side) of the suction rod 3. Can be stretched.
- the magnetic field lines interlinking with the arc drawn in the back contain many magnetic field lines that wrap around the S pole side of the permanent magnet 41, and the interlinkage magnetic field by the magnetic field lines in this direction (right side in the figure) is A force for attracting the arc to the inside of the suction rod 3 is caused.
- the same effect can be obtained even when the energization direction is reversed.
- the arc extends so as to be symmetric with respect to the axis of the suction bar 3 as shown in FIG. I will do it.
- the same effect can be obtained even when the direction of the magnetic pole surface of the permanent magnet 41 (or the magnet 4) is reversed, and the arc expands so as to be the target at the axis of the suction bar 3 at each arc extinguishing stage. I will do it.
- the suction rod 3 and the permanent magnet 41 (or the magnet 4) it becomes possible to drive and extend the arc in the same direction, and the reliability of interruption without increasing the size of the switchgear. Can be increased.
- the switchgear of FIG. 1 it has the further effect by adding the following members other than said basic structure.
- the switchgear includes an arc extension space part, and by arranging a permanent magnet (or magnet) in the arc extension space part, it is possible to extend the length that the arc can be extended and to further increase the arc resistance.
- the magnetic reinforcing plate 6 made of a magnetic material is provided on the magnetic pole surface on the opposite side (the anti-attraction bar side) that is not adjacent (surface bonded) to the attraction bar 3 of the permanent magnet 41 (or magnet 4), thereby attracting the magnet.
- the magnetic resistance of the magnetic circuit formed by the magnetic field lines that circulate around the permanent magnet 41 (or the magnet 4) via the bar 3 is reduced, the magnetic field intensity generated from the surface of the attraction bar 3 is increased, further improving the arc extinguishing performance. Can be increased.
- the magnet 4 used in the form of FIG. 1 is composed of the permanent magnet 41, a constant magnetic flux can be applied to the arc, so that even in a current region where the magnetic flux generated from the conducting conductor is weak (for example, less than 1 kA). A stable shut-off can be performed.
- FIG. 3 is a side sectional view schematically showing a main configuration of the arc extinguishing chamber portion in the open state of the switchgear according to Embodiment 1 of the present invention.
- the switchgear according to Embodiment 1 of the present invention is based on the configuration shown in FIG. 1 described above, and the fixed contact and the suction rod, which is a long magnetic body, are integrally formed of a magnetic material.
- This is a suction bar integrated contact 10 (hereinafter also simply referred to as an integrated contact) 10. That is, it can be said that the attraction bar integrated contact 10 has one end in contact with the magnetic pole surface of the magnet 4 and the other end having the function of the fixed contact 1. That is, the suction bar integrated contact 10 is formed by integrating the end of the fixed contact 1 on the side of the suction bar 3 and the other end of the suction bar 3.
- the other configuration is the same as that of the switchgear of FIG.
- the number of parts is reduced by integrally molding the stationary contact and the suction rod in addition to the effects described in the apparatus of FIG.
- the magnetic field lines generated from the magnet can be efficiently guided to the vicinity of the fixed contact, so that the arc generated at the time of opening the contact can be quickly driven and extended to suppress contact wear.
- the movable contact may also be formed of a magnetic material.
- Both fixed and movable contacts are made of a magnetic material and are integrally formed with the suction rod.
- the arc is commutated and held.
- An arc commutation portion 10A that branches from the contact 10 is provided, and the arc is extended from the arc commutation portion 10A along the longitudinal side surface of the suction bar.
- the arc can be held at a position away from the fixed contact 1a, contact wear can be suppressed and contact reliability of the contact can be improved. Moreover, even when the arc extended by the effect of the present invention is short-circuited due to dielectric breakdown between the suction bar integrated contact 10 and the movable contact 2, the arc commutation portion 10A and the movable contact 2 are not affected. Since the short circuit occurs, it is possible to prevent the reverse contact between the two contacts 1a and 2a and to stabilize the breaking performance.
- Embodiment 3 a third embodiment which is a modification of the second embodiment of the present invention will be described with reference to FIG.
- the arc commutation portion 10A is provided so as to be exposed from the magnetic insulating cover 3c.
- the insulating ablation gas is ejected from the magnetic insulating cover 3c around the arc commutation portion 10A by the arc heat and is filled, thereby further increasing the resistance inside the arc. Furthermore, the possibility of a short circuit between the two contacts 10 and 2 can be greatly suppressed.
- Embodiment 4 FIG. Next, a fourth embodiment of the present invention which is a modification of the suction bar integrated contact shown in the second embodiment will be described with reference to FIG.
- a contraction portion 10 ⁇ / b> B in which a partial cross-sectional area located between the fixed contact 1 a and the magnetic pole surface of the magnet 4 (see FIG. 4) is reduced is provided. It is a thing.
- the lines of magnetic force generated from the magnets are concentrated in the contraction portion 10B, and the electromagnetic force acting on the arc can be increased in the space around the contraction portion 10B. Further, by disposing the contraction portion 10B in the vicinity of the fixed contact 1a, an arc generated immediately after the contact is released can be quickly moved to the magnet side, so that contact wear can be suppressed.
- FIG. 7 an arc extinguishing chamber of the switchgear according to Embodiment 5 of the present invention will be described with reference to FIG.
- the arc extinguishing chamber of the switchgear according to the fifth embodiment is an application example when there are a plurality of arc extinguishing spaces in one phase.
- two arc extinguishing spaces and an electromagnetic actuator unit 105 are accommodated in the case 101.
- two magnets 4A and 4B and these magnets 4A are stored.
- 4B is bonded to the magnetic pole surface of 4B to protect the two attracting rods 3 extending between the fixed contact 3 and the movable contact 2 and the magnets 4A and 4B, and the magnets 4A and 4B and the attracting rod 3, respectively.
- the suction rod integrated fixed contact and the suction rod integrated movable contact integrally molded in the above are provided. And it is comprised so that the movable contact 2 can be opened by operating the electromagnetic actuator part 105 from the external circuit which is not illustrated.
- the arc generated between the two contact points 1a and 2a in the two arc extinguishing spaces extends toward the magnets 4A and 4B while being along the side surfaces of the two integrated contacts. After being drawn and extended to the vicinity of the arrangement position, it is cooled by the ablated gas from the insulating cover 3c, and the arc is extinguished. Further, by arranging the magnetic pole directions of the magnets 4A and 4B that are surface-bonded to the two integrated contacts in different directions, the chattering generated at the time of closing due to the effect of the magnetic force acting between the two integrated contacts. The phenomenon can also be suppressed.
- FIG. 8 a sixth embodiment, which is a modification of the fifth embodiment, will be described with reference to FIG. 8 in the suction bar integrated contact 10 arranged across two arc-extinguishing spaces, the magnet 4 is disposed in a surface-bonded manner between the respective arc-extinguishing spaces, and the insulating cover 3c magnets the magnet. Protect with 4
- the arc generated in the two arc extinguishing spaces can be extended toward the magnet side at the same time with one magnet 4, so that the interruption performance can be achieved with a small number of parts. Can be raised.
- the present invention is suitable as a switching device such as a switch, a switch, a circuit breaker, an electromagnetic contactor, a relay, etc. for cutting off a current.
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
このような開閉装置では、アークに所望のローレンツ力を作用させるためにローレンツ力の作用面に対し、一様な方向の磁力線を作用させる必要がある。アークに対して一様な方向の磁力線を鎖交させるためには、ローレンツ力の作用面よりも永久磁石の磁極面を大きくしなければならず、高コストな構成となり、配置スペースを確保することが困難となる。
また、永久磁石からの磁力線を永久磁石の対向面より外側でも形成させるため、磁気ヨークを用いることがあるが、永久磁石からの磁力線によって生じるローレンツ力は、電流の向きが変わると逆方向に作用するため、この場合では逆接接続すると遮断が困難となり事故の原因となる。この事故を避けるためには、電流の向きが逆転してアークが逆方向に動いても十分に伸張できるアーク伸張空間と磁気ヨークを搭載しなければならず、開閉装置が大形化する問題があった。
また、固定接触子と上記吸引棒を一体成型することで、部品点数を低減させることができるだけでなく、磁石から発生する磁力線を固定接点付近まで効率的に誘導できるため、開極時に発生するアークは速やかに駆動・伸長され接点損耗を抑制することができる。
図1、図2は、この発明の基礎となる技術を示すもので、図1は、開閉装置の開極状態における開閉機構部と消弧室部分の要部構成を示す側断面図、図2は、図1の開閉装置のアークの消弧動作を説明するための説明図である。
図1に示すように、この発明の基礎となる開閉装置100は、固定接点1aを有する固定接触子1と、可動接点2aを有する可動接触子2と、固定接点1aと可動接点2aとの開閉動作を行う開閉機構部103と、固定接点1aと可動接点2aとの開離時に固定接触子1と可動接触子2間で発生したアークを伸張させるための磁界を発生させる磁石4と、一端部が磁石4の磁極面に接し、他端部が固定接触子1の側にあり、固定接触子1と磁石4との間に延在する長尺状の磁性体である吸引棒3とを備えている。そして、吸引棒3の他端部は固定接触子1と可動接触子2との間のアーク発生領域に近接するように配置され、両接点1a、2aの開離時に両接触子1、2間で発生したアークAを制御して伸張させる磁石4と、一端部がアーク発生領域の近傍に配置されると共に他端部が磁石4の一方の磁極面に面接合された磁性体からなる吸引棒3とを基本構成とするものであり、前記構成によってアークAは、磁石4により発生した磁界によって、磁性体である吸引棒3の長手方向側面に沿って伸張される。
図1において、開閉装置100は、絶縁物からなるケース101によって構成された筐体の両端部に、外部の電力回路と接続される固定側端子部11及び可動側端子部12が設けられ、下部にはアークを消弧するために、一端に固定接点1aが配置され、他端に磁石4が配置された消弧室102が設けられている。
消弧室102には、固定側端子部11と一体的に形成され、所定部に固定接点1aが設けられた固定接触子1と、固定接点1aに接離する可動接点2aを有し回動するように設けられた可動接触子2と、固定接触子1と可動接触子2とが挟みこむ空間に対向するよう、一端部がアークの発生領域の近傍に配置された長尺状の磁性体からなる吸引棒3と、この吸引棒3に隣接(面接合)し吸引棒3の他端部、すなわち固定接点1aと可動接点2aとの両接点間で発生するアークAの対向面とは逆側の吸引棒3の他端部端面に、この端面と対向する磁極面を面接合し吸引棒3周側面に沿いながらアークを駆動させる磁石4とが配置されている。なお、15は可撓導体である。
次に、消弧の進展段階(II)においては、(I)の段階で駆動されたアークに、吸引棒3の先端から永久磁石41のS極側に回り込むように形成される磁力線Mが鎖交するようになる。この鎖交磁場により吸引棒長手方向の側面部分に拡がるアーク伸張空間にアークは、引きこまれる。
このように、吸引棒3と永久磁石41(又は磁石4)を用いることでアークを同一方向に駆動、伸張することができるようになり、開閉装置を大形化することなく、遮断の信頼性を高めることができる。
まず、開閉装置はアーク伸張空間部を備えており、永久磁石(又は磁石)をアーク伸張空間部に配置することで、アークを伸張できる長さを拡張でき、アーク抵抗をさらに高めることができる。
また、永久磁石41(又は磁石4)の吸引棒3と隣接(面接合)していない反対側(反吸引棒側)の磁極面に、磁性体からなる磁気補強板6を設けることで、吸引棒3を介して永久磁石41(又は磁石4)の周囲を周回する磁力線が形成する磁気回路の磁気抵抗が低下するため、吸引棒3の表面から発生する磁場強度が高まり、消弧性能をさらに高めることができる。
図3はこの発明の実施の形態1における開閉装置の開極状態における消弧室部分の要部構成を概略的に示す側断面図である。この発明の実施の形態1の開閉装置は、上述した図1の構成を基本構成として、固定接触子と長尺の磁性体である吸引棒とを磁性材料により一体成型して、固定接触子を吸引棒一体型接触子(以下、単に一体型接触子ともいう。)10としたものである。つまり、吸引棒一体型接触子10は、一端部が磁石4の磁極面に接し、他端部に固定接触子1の機能が形成されているといえる。すなわち、固定接触子1における吸引棒3の側の端部と、吸引棒3の他端部とが一体となったものが吸引棒一体型接触子10である。なお、その他の構成は、図1の開閉装置と同様故、説明は省略する。
次に、この発明の実施の形態1の変形例である実施の形態2を、図4にもとづき説明する。実施の形態2では、実施の形態1の吸引棒と固定接触子を一体成型した吸引棒一体型接触子10を備えた構成に加えて、アークを転流させて保持するため、吸引棒一体型接触子10から分岐するアーク転流部10Aを設け、アークをアーク転流部10Aから吸引棒の長手方向側面に沿って伸長させるようにしたものである。
次に、この発明の実施の形態2の変形例である実施の形態3を、図5にもとづき説明する。実施の形態3では、アーク転流部10Aを、磁性体用絶縁カバー3cから露出するように設けている。
次に、実施の形態2で示される吸引棒一体型接触子の変形例であるこの発明の実施の形態4を、図6にもとづき説明する。
この実施の形態4では、吸引棒一体型接触子10において、固定接点1aと、磁石4(図4参照)の磁極面との間に位置する一部の断面積を小さくした収縮部10Bを設けたものである。
また、収縮部10Bを固定接点1a近傍に配置することで、接点開離直後に発生するアークを速やかに磁石側へ移動させることができるため、接点損耗を抑制することもできる。
次に、この発明の実施の形態5における開閉装置の消弧室を、図7にもとづいて説明する。この実施の形態5における開閉装置の消弧室は、一つの相に複数の消弧空間がある場合の応用例である。
図7において、ケース101の内部には、2箇所の消弧空間と、電磁アクチュエータ部105とが収納されており、それぞれの消弧空間には、2個の磁石4A、4Bと、これら磁石4A、4Bの磁極面と面接合し、固定接触子3および可動接触子2と磁石4A、4Bの間にそれぞれ延在する2個の吸引棒3と、磁石4A、4Bおよび吸引棒3を保護する2個の絶縁カバー3cと、可動接点2aを有した可動接触子2と、固定接点1aを有した固定接触子1とを有し、これら両接触子1、2と吸引棒3をそれぞれ磁性材料で一体成型した吸引棒一体型固定接触子および吸引棒一体型可動接触子を備えている。そして、電磁アクチュエータ部105を図示していない外部回路より操作することで、可動接触子2を開極することができるよう構成されている。
また、両一体型接触子に面接合する磁石4A,4Bの磁極方向をそれぞれ異なる向きで配置することで、両一体型接触子間で作用する磁気作用による引力の効果により閉極時に発生するチャタリング現象を抑制することもできる。
次に、実施の形態5の変形例である実施の形態6を、図8にもとづき説明する。
図8において、2箇所の消弧空間にまたがって配置されている吸引棒一体型接触子10において、それぞれの消弧空間の間で、磁石4を面接合して配置し、絶縁カバー3cで磁石4とともに保護している。
1a:固定接点、2:可動接触子、 2a:可動接点、
11:固定側端子部、 12:可動側端子部、
15:可撓導体、 3:吸引棒、 3c:磁性体用絶縁カバー、
3e:凹状の細隙、 4、4A、4B:磁石、 41:永久磁石、
6:磁気補強板、10:吸引棒一体型接触子、
10A:アーク転流部、 10B:収縮部、100:開閉装置、
101:ケース、 102:消弧室、 103:開閉機構部、
105:電磁アクチュエータ部。
Claims (7)
- 固定接点を有する固定接触子と、可動接点を有する可動接触子と、前記固定接点と前記可動接点との開閉動作を行う開閉機構部と、磁石と、一端部が前記磁石の磁極面に接し、前記固定接触子および前記可動接触子の少なくとも何れか一方と前記磁石との間に延在する長尺状の磁性体とを有する開閉装置において、前記固定接触子および前記可動接触子の少なくとも何れか一方を磁性材料により前記磁性体と一体成型した吸引棒一体型接触子を備えたことを特徴とする開閉装置。
- 前記固定接触子と可動接触子の両方を磁性材料で形成したことを特徴とする請求項1に記載の開閉装置。
- 前記吸引棒一体型接触子から分岐するアーク転流部を設けたことを特徴とする請求項1または請求項2に記載の開閉装置。
- 前記吸引棒一体型接触子は、前記磁石と接触する面と、前記固定接点、あるいは可動接点との間に、一部の断面積が小さい収縮部を形成したことを特徴とする請求項1から請求項3のいずれか1項に記載の開閉装置。
- 一端に前記固定接点が配置され、他端に前記磁石が配置された消弧室を有することを特徴とする請求項1から請求項4のいずれか1項に記載の開閉装置。
- 前記磁石は、磁界を発生し、前記固定接点と前記可動接点との開離時に前記固定接触子と前記可動接触子間で発生したアークを伸張させ、前記アークは、前記磁性体の長手方向側面に沿って伸張されること特徴とする請求項1から請求項5のいずれか1項に記載の開閉装置。
- 前記磁石は、磁界を発生し、前記固定接点と前記可動接点との開離時に前記固定接触子と前記可動接触子間で発生したアークを伸張させ、前記アークは、前記アーク転流部から前記磁性体の長手方向側面に沿って伸張されること特徴とする請求項3に記載の開閉装置。
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PCT/JP2014/065075 WO2015186245A1 (ja) | 2014-06-06 | 2014-06-06 | 開閉装置 |
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JP2012064584A (ja) * | 2010-09-20 | 2012-03-29 | Secheron Sa | 電気機械式回路遮断器 |
WO2013108291A1 (ja) * | 2012-01-18 | 2013-07-25 | 三菱電機株式会社 | 回路遮断器 |
JP2013235748A (ja) * | 2012-05-10 | 2013-11-21 | Nitto Kogyo Co Ltd | 直流開閉器 |
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JP2004071512A (ja) * | 2002-08-09 | 2004-03-04 | Omron Corp | 開閉装置 |
JP2004349203A (ja) * | 2003-05-26 | 2004-12-09 | Omron Corp | 直流負荷用接点構成および該接点構成を有した開閉器 |
JP5778989B2 (ja) * | 2011-05-19 | 2015-09-16 | 富士電機機器制御株式会社 | 電磁接触器 |
KR101354405B1 (ko) * | 2011-06-07 | 2014-01-22 | 후지쯔 콤포넌트 가부시끼가이샤 | 전자계전기 및 전자계전기의 제조방법 |
CN202487498U (zh) * | 2012-03-21 | 2012-10-10 | 温州市明达电器有限公司 | 双向磁场消弧装置 |
EP3154074B1 (en) * | 2014-06-06 | 2019-03-20 | Mitsubishi Electric Corporation | Switch device |
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JP2012064584A (ja) * | 2010-09-20 | 2012-03-29 | Secheron Sa | 電気機械式回路遮断器 |
WO2013108291A1 (ja) * | 2012-01-18 | 2013-07-25 | 三菱電機株式会社 | 回路遮断器 |
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JP6091711B2 (ja) | 2017-03-08 |
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CN105140065B (zh) | 2017-08-08 |
CN105140065A (zh) | 2015-12-09 |
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