WO2013171903A1 - 直流回路用回路遮断器及び直流回路用回路遮断装置 - Google Patents
直流回路用回路遮断器及び直流回路用回路遮断装置 Download PDFInfo
- Publication number
- WO2013171903A1 WO2013171903A1 PCT/JP2012/062829 JP2012062829W WO2013171903A1 WO 2013171903 A1 WO2013171903 A1 WO 2013171903A1 JP 2012062829 W JP2012062829 W JP 2012062829W WO 2013171903 A1 WO2013171903 A1 WO 2013171903A1
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- WIPO (PCT)
- Prior art keywords
- circuit
- circuit breaker
- arc
- insulator
- grid plate
- Prior art date
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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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/345—Mounting of arc chutes
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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
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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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
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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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
- H01H2009/365—Metal parts using U-shaped plates
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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
- H01H9/302—Means for extinguishing or preventing arc between current-carrying parts wherein arc-extinguishing gas is evolved from stationary parts
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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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
- H01H9/362—Mounting of plates in arc chamber
Definitions
- the present invention relates to a circuit breaker for a DC circuit and a circuit breaker for a DC circuit that can increase an arc voltage by putting resin between arc extinguishing plates (grid plates) of the arc extinguishing device.
- a circuit breaker that is used for both AC and DC circuits is difficult to cut off high voltage compared to AC circuits because DC current does not have a current zero when DC circuit is used. .
- the arc voltage is improved by increasing the number of arc extinguishing plates, and the magnetic driving force is increased by reducing the magnetic resistance on the arc extinguishing plate side.
- an insulating member that generates arc-extinguishing gas is arranged around the arc, and the gas driving force that drives the arc toward the arc-extinguishing plate by the pressure gradient of the gas enables a DC rated voltage without a permanent magnet. To increase the voltage.
- the present invention has been made in order to solve the above-described problems.
- a circuit breaker for a DC circuit and a circuit breaker for a DC circuit that can interrupt a high-voltage DC circuit without using a magnet in a small current arc. The purpose is to obtain.
- the circuit breaker for a DC circuit of the present invention includes a base of a housing, an external terminal arranged on the base at an interval, a fixed contact connected to one of the external terminals and having a fixed contact, and the fixed A movable contact having a movable contact contacting and separating from the contact and connected to the other of the external terminals; and provided in the vicinity of both the contact and the fixed contact, and a plurality of grid plates are laminated between the contacts.
- An arc extinguishing device that extinguishes the generated arc, and the grid plate is a circuit breaker in which a U-shaped cutout portion and side foot portions on both sides of the cutout portion are formed on the movable contact side.
- resin insulators are arranged without gaps in the grid plate stacking direction, and the U-shaped notch portions of the grid plates are opposed to the insulators.
- a letter-shaped notch is formed and the In which notch side surface of the grid plate at the side legs of the de plate is formed so as to expose.
- circuit breaker for a DC circuit by adding the insulator, it is possible to increase the arc voltage in a small current region where the arc driving force is small without using a magnet, and a high voltage DC The circuit can be shut off.
- FIG. 6 is a diagram for explaining magnetic driving of an arc in the first embodiment.
- FIG. 3 is an external connection diagram of the first and second embodiments.
- FIG. 10 is an external connection diagram of the third embodiment.
- FIG. 10 is an external connection diagram of the fourth embodiment.
- FIG. 1 is a longitudinal sectional view showing the overall configuration of a DC circuit breaker according to Embodiment 1 of the present invention.
- the circuit breaker 101 is configured by using a housing 10 including a base 11 and a cover 12 made of an insulating material.
- circuit breaker units 20 corresponding to the number of (one or more) poles are arranged at intervals.
- An opening / closing mechanism 30 having a well-known toggle link mechanism is disposed on the circuit breaking unit 20.
- the cover 12 covers the circuit breaker unit 20 of each pole on the base 11 and the opening / closing mechanism 30, and the operation handle 31 of the opening / closing mechanism 30 protrudes from the handle window hole 12 a of the cover 12.
- the circuit breaker units 20 for each pole are configured in the same manner, and the crossbar 32 is arranged on the base 11 so as to be orthogonal to the circuit breaker unit 20 for each pole in common with the circuit breaker unit 20 for each pole. Is done.
- the cross bar 32 is rotated about its axis by the opening / closing mechanism 30 and each movable contact 23 in the circuit breaker unit 20 of each pole is attached.
- the opening / closing mechanism 30 includes a known toggle link mechanism, and includes a known trip bar 33 driven by the tripping device 40.
- the circuit breaker unit 20 of each pole includes a power supply side terminal (external terminal) 24 provided on the base 11, a fixed contact 21 provided on a fixed contact 27 extending from the power supply side terminal 24, and this fixed A movable contact 22 that contacts and separates from the contact 21, a movable contact 23 provided at one end and rotatably held by a cross bar 32, and a movable contact holder 26 on the movable contact 23.
- the tripping device 40 connected via the tripping device, the load side terminal (external terminal) 25 extended from the tripping device 40, the fixed contact 27, and both the contacts 21, 22 are provided in the vicinity of the both contacts 21.
- an arc extinguishing device 50 that extinguishes the arc generated between them.
- the fixed contact 21 and the movable contact 22 constitute an open / close contact that opens and closes the electric circuit.
- the electric circuit between the terminals 24 and 25 is turned on.
- the movable contact 22 is separated from the fixed contact 21, the electric circuit between both the terminals 24 and 25 is turned on. Turn off. At this time, the arc generated between the movable contact 22 and the fixed contact 21 is extinguished by the arc extinguishing device 50.
- FIG. 2 is an enlarged perspective view showing the arc extinguishing apparatus of FIG. 3 is an enlarged side sectional view showing the arc extinguishing apparatus of FIG.
- FIG. 4 is an enlarged perspective view showing the arc extinguishing apparatus with the movable contact removed from FIG.
- FIG. 5 is an enlarged perspective view showing the arc extinguishing apparatus with the insulating member removed from FIG.
- FIG. 6 is an enlarged view showing the grid plate, where (a) is a front view and (b) is a side view thereof.
- FIG. 7 is an enlarged view showing an insulator, in which (a) is a front view and (b) is a side view thereof.
- the plurality of grid plates 51 and the uppermost grid plate 52 made of magnetic steel plates constituting the arc extinguishing device 50 are arranged on one side of the square plate (on the movable contact side). ) Are provided with substantially U-shaped cutout portions 51a and 52a, and side foot portions 51b are formed on both sides of the cutout portions 51a and 52a.
- the arc extinguishing device 50 is formed by using a plurality of grid plates 51 and one of the uppermost grid plates 52, stacking them at a predetermined interval, and sandwiching them between support plates 53a and 53b made of an insulating material. It is configured.
- the arc-extinguishing device 50 is installed such that the U-shaped cutouts 51a and 52a of the grid plate 51 and the uppermost grid plate 52 face the fixed contact 21 and the movable contact 22, and the U-shaped cutout 51a.
- the movable contactor 23 rotates in the space 50a formed by the above.
- the uppermost grid plate 52 is provided with a bent portion 52b so that the arc can be easily commutated from the movable contactor 23.
- an insulating member 55 made of a resin (for example, polyamide resin) that covers the power supply side terminal 24 and generates an arc extinguishing gas when it touches the arc is provided. It has been. Further, as shown in FIG. 3, a resin insulator 54 (for example, polyamide resin or polyacetal resin) is interposed between the plurality of grid plates 51 and the uppermost grid plate 52 in the arc extinguishing device 50. Arranged without gaps in the stacking direction, the front end surface 51 d on the side of the cross bar 32 in the side foot portion 51 b of the grid plate 51 is also covered with the bent portion 54 b of the insulator 54.
- a resin insulator 54 for example, polyamide resin or polyacetal resin
- the side surface 51c on the space 50a side (notch portion 51a side) of the side foot portion 51b of the grid plate 51 is not covered with the insulator 54, and is exposed so that the side surface 51b of the side foot portion 51b touches the arc.
- the insulator 54 is formed with a U-shaped cutout portion 54a opposite to the U-shaped cutout portion 51a in the grid plate 51, and is formed of one part by the connecting portion 54c. It is configured. Note that it is not necessary to arrange the insulators 54 between the grid plate 51 and the uppermost grid plate 52, and the number of plates to be arranged may be changed according to the required arc voltage. Further, the insulator 54 is formed with a notch 54d that extends the notch 54a and magnetically drives the arc toward the back of the grid plates 51 and 52 on the side of the notch 54a opposite to the movable contact. .
- the breaking operation of the circuit breaker 101 will be described.
- the tripping device 40 rotates and pushes the trip bar 33 to drive the opening / closing mechanism 30 and rotate the movable contact 23.
- the movable contact 22 is separated from the fixed contact 21 by the rotation of the movable contact 23.
- the arc caused by the flowing current tends to be maintained at the shortest distance between the fixed contact 21 and the movable contact 22.
- the magnetic flux that is attracted to the grid plate 51 and passes through the U-shaped cutouts 51a of the plurality of grid plates 51 The arc is magnetically driven to the back of the space formed by the U-shaped cutouts 51a of the plurality of grid plates 51 (in the direction of the power supply side terminal 24 in FIG. 3). Further, the arc is driven to the arc extinguishing plate 51 side by the pressure gradient of the arc extinguishing gas generated from the insulating member 55 due to the high heat of the arc.
- the arc moved to the arc extinguishing plate 51 side is divided into short arcs by the plurality of grid plates 51, and the arc voltage is increased by the cathode fall voltage obtained by the division.
- this arc voltage becomes higher than the power supply voltage, the arc disappears and the interruption is completed.
- the resin insulator 54 is interposed between the plurality of grid plates 51 and the uppermost grid plate 52 so as to utilize the arc voltage increase caused by the cooling gas generated when the arc touches the resin. Arranged. In order to extinguish the arc generated between the contacts 21 and 22 at an early stage, the side surface 51c of the side foot portion 51b of the grid plate 51 is exposed so as to be easy to touch the arc. Thus, the arc voltage is increased by utilizing the cathode fall voltage generated when the arc touches the grid plates 51 and 52.
- the insulator 54 is disposed between the grid plates 51 and 52 without gaps in the grid plate stacking direction, the required grid plates 51 and 52 are reduced without reducing the number of grid plates 51 and 52. Thus, the arc voltage is increased. Furthermore, if there is a gap between the grid plates 51 and 52 and the insulator 54, it can be avoided that the gas escapes in the direction of the power supply side terminal 24 and a sufficient increase in pressure cannot be expected. By increasing the gas pressure and reducing the diameter of the arc, the arc resistance is increased and the current is easily reduced and cut off. Next, the operation of the bent portion 54b of the insulator 54 will be described. 8A and 8B are diagrams for explaining the magnetic drive of the arc. FIG.
- FIG. 8A shows the case where the bent portion 54b of the insulator 54 is not provided
- FIG. 8B shows the case where the bent portion 54b of the insulator 54 is provided.
- the arc 56 may touch the front end surface 51d of the side foot portion 51b of the grid plate 51 as shown in FIG. If it does so, the magnetic flux which can be made around the arc 56 will become like 56a, and will become a magnetic flux which passes only the side leg part 51b of one side. For this reason, the arc 56 cannot be driven to the back of the grid plate 51 (on the left side in the drawing), and remains in the vicinity of the front end surface 51d of the side foot 51b.
- the arc is driven by the gas generated from the bent portion 54b and is driven to the side surface 51c side of the side foot portion 51b. Then, as shown in FIG. 8B, the magnetic flux that can be generated around the arc 56 becomes 56b.
- the magnetic flux passing through the side foot portions 51b on both sides causes the arc 56 to move toward the back of the grid plate 51 (on the paper surface). It can be driven on the left side (in the direction of arrow A).
- connection of the DC power supply 60 and the load 61 when the circuit breaker 102 is connected to the DC circuit will be described.
- FIG. 10 showing the external connection diagram in the first and second embodiments
- the DC power supply 60 is used as the power supply terminals 24a and 24b
- the load 61 is used as the load terminals 25a and 25b. Just connect in series and connect in series.
- the positive side of the DC power source 60 is connected to the power source side terminal 24a
- the negative side of the DC power source 60 is connected to the power source side terminal 24b.
- a resin insulator is arranged between the grid plates of the arc extinguishing device without any gap in the stacking direction of the grid plates, and the insulator is opposed to the U-shaped notch portion of the grid plate.
- the U-shaped cutout portion is formed and the side face of the grid plate is exposed so that the side surface of the cutout portion side of the grid plate is exposed.
- the arc voltage in the region can be increased, and the high voltage DC circuit can be interrupted.
- the bent portion 54b is provided in the insulator and covers the front end surface of the side foot portion of the grid plate, the arc can be efficiently driven toward the back of the grid plate, and the arc driving force is small in a small current region.
- the arc voltage can be increased and the high voltage DC circuit can be interrupted.
- the bent portion 54b of the insulator 54 can position the insulator 54 when the insulator 54 is inserted between the grid plates, and the assembling work is facilitated.
- FIG. FIG. 9 is an enlarged view showing an insulator in the second embodiment, where (a) is a front view and (b) is a side view thereof.
- the insulator 54 is composed of the insulator 54 excluding the connecting portion 54a provided in the first embodiment in order to discharge the melt generated when an extra large current is interrupted (current exceeding several kA). . That is, the notch 54d that extends the notch 54a of the insulator 54 and induces an arc reaches the non-movable contact side of the insulator 54 and discharges the melt and pressure generated when the arc current is interrupted. It is formed as follows. As a result, it is possible to obtain a circuit breaker for a DC circuit that satisfies all performances in the extra large current region, the large current region, and the small current region.
- FIG. 11 is an external connection diagram illustrating a circuit breaker for a three-pole DC circuit in the third embodiment.
- FIG. 10 shows an example of a circuit breaker for a two-pole DC circuit.
- three circuit breaker units 20 that are the same as those in the first and second embodiments are used.
- 103 is configured. Note that the circuit interruption unit 20 is the same as in the first and second embodiments, and thus the description thereof is omitted.
- the positive side / negative side of the DC circuit 60 is connected to the power supply side terminal 24a, the negative side / positive side of the DC circuit 60 is connected to the power supply side terminal 24c, and the load side terminal 25a and the power supply side are connected.
- Terminal 24b is connected.
- the load 61 connects the positive side / negative side to the load side terminal 25b and the negative side / positive side to the load side terminal 25c.
- a power source may be connected to each power supply side terminal 24a, 24b, 24c, and a load may be connected to each load side terminal 25a, 25b, 25c.
- the circuit breaker 103 it can be applied to a DC circuit having a higher voltage by a series wiring that is cut at three points.
- FIG. 12 is an external connection diagram illustrating a circuit breaker for a four-pole DC circuit in the fourth embodiment.
- a four-pole circuit breaker 104 is configured using four circuit breaker units 20 similar to those in the first and second embodiments.
- the circuit interruption unit 20 is the same as in the first and second embodiments, and thus the description thereof is omitted.
- the positive / negative side of the DC circuit 60 is connected to the power supply terminal 24a, the negative / positive side of the DC circuit 60 is connected to the power supply terminal 24d, and the load terminal 25a and the power supply are connected.
- the side terminal 24b is connected, and the load side terminal 25d and the power supply side terminal 24c are connected.
- the load 61 connects the positive side / negative side to the load side terminal 25b and the negative side / positive side to the load side terminal 25c.
- the circuit breaker 104 When the circuit breaker 104 is applied to a DC circuit, the circuit breaker 104 can be applied to a DC circuit having a higher voltage by a series wiring that is cut at four points as shown in FIG. It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
図1は本発明の実施の形態1における直流回路用回路遮断器の全体構成を示す縦断面図である。図1に示すように、回路遮断器101は、絶縁材料で形成されたベース11とカバー12とからなる筐体10を用いて構成される。ベース11上には、(1又は複数)極数分の回路遮断ユニット20が互いに間隔をおいて配列される。回路遮断ユニット20の上部には、周知のトグルリンク機構を有する開閉機構部30が配置される。カバー12は、ベース11上の各極の回路遮断ユニット20と、開閉機構部30を覆い、開閉機構部30の操作ハンドル31はカバー12のハンドル用窓孔12aから突出している。
図9は実施の形態2における絶縁体を示す拡大図で、(a)は正面図、(b)はその側面図である。絶縁体54は、特大電流遮断時(数kAを超える電流)に発生する溶融物を外へ排出させるため、実施の形態1で設けていた繋ぎ部54aを排除した絶縁体54で構成している。つまり、絶縁体54の切欠部54aを延長しアークを誘導する切欠路54dは、絶縁体54の反可動接触子側まで達して、アーク電流を遮断するときに発生する溶融物や圧力を排出するように形成されている。これにより特大電流領域,大電流領域、小電流領域のすべての性能を満足する直流回路用回路遮断器を得ることができる。
図11は実施の形態3における3極の直流回路用回路遮断装置を示す外部結線図である。図10は、2極の直流回路用回路遮断装置の例であったが、実施の形態3では、実施の形態1,2と同じ回路遮断ユニット20を3個用いて、3極の回路遮断装置103を構成したものである。なお、回路遮断ユニット20については、実施の形態1,2と同様のため、説明を省略する。
図12は実施の形態4における4極の直流回路用回路遮断装置を示す外部結線図である。実施の形態4では、実施の形態1,2と同じ回路遮断ユニット20を4個用いて、4極の回路遮断装置104を構成したものである。なお、回路遮断ユニット20については、実施の形態1,2と同様のため、説明を省略する。
なお、本発明は、その発明の範囲内において、各実施の形態を自由に組み合わせたり、各実施の形態を適宜、変形、省略することが可能である。
Claims (6)
- 筺体のベースと、このベース上に間隔をおいて配置された外部端子と、前記外部端子の一方に接続され固定接点を有する固定接触子と、前記固定接点と接離する可動接点を有し前記外部端子の他方に接続された可動接触子と、前記両接点及び前記固定接触子の近傍に設けられ、複数のグリッド板が積層され前記両接点間に発生したアークを消弧する消弧装置とを備え、
前記グリッド板には、前記可動接触子側にU字形の切欠部と前記切欠部の両側の側足部が形成されている回路遮断器であって、
前記消弧装置のグリッド板間には、前記グリッド板の積層方向に隙間なく樹脂製の絶縁体が配置され、前記絶縁体には前記グリッド板のU字形の切欠部と対向するU字形の切欠部が形成されると共に、前記グリッド板の側足部における前記グリッド板の切欠部側側面が露出するよう形成されたことを特徴とする直流回路用回路遮断器。 - 前記消弧装置のグリッド板間に配置された絶縁体には、前記グリッド板の側足部の先端面を被う曲げ部が形成されていることを特徴とする請求項1記載の直流回路用回路遮断器。
- 前記消弧装置のグリッド板間に配置された絶縁体には、前記絶縁体の切欠部の反可動接触子側に、前記絶縁体の切欠部を延長しアークを誘導する切欠路が形成されていることを特徴とする請求項1又は請求項2記載の直流回路用回路遮断器。
- 前記絶縁体の切欠部を延長しアークを誘導する切欠路は、前記絶縁体の反可動接触子側まで達して、アーク電流を遮断するときに発生する溶融物や圧力を排出するように形成されている請求項3記載の直流回路用回路遮断器。
- 請求項1~請求項4のいずれか1項記載の直流回路用回路遮断器を3極設け、これらの直流回路用回路遮断器を直列に配線して回路電圧を遮断できるよう構成した直流回路用回路遮断装置
- 請求項1~請求項4のいずれか1項記載の直流回路用回路遮断器を4極設け、これらの直流回路用回路遮断器を直列に配線して回路電圧を遮断できるよう構成した直流回路用回路遮断装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2012/062829 WO2013171903A1 (ja) | 2012-05-18 | 2012-05-18 | 直流回路用回路遮断器及び直流回路用回路遮断装置 |
JP2012531574A JP5084982B1 (ja) | 2012-05-18 | 2012-05-18 | 直流回路用回路遮断器及び直流回路用回路遮断装置 |
KR1020147027889A KR101678288B1 (ko) | 2012-05-18 | 2012-05-18 | 직류 회로용 회로 차단기 및 직류 회로용 회로 차단 장치 |
CN201280073266.8A CN104321847B (zh) | 2012-05-18 | 2012-05-18 | 直流电路用电路断路器以及直流电路用电路断路装置 |
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PCT/JP2012/062829 WO2013171903A1 (ja) | 2012-05-18 | 2012-05-18 | 直流回路用回路遮断器及び直流回路用回路遮断装置 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016042430A (ja) * | 2014-08-18 | 2016-03-31 | 河村電器産業株式会社 | 直流遮断器 |
EP3598468A1 (en) * | 2018-07-18 | 2020-01-22 | LSIS Co., Ltd. | Arc extinguishing unit of molded case circuit breaker |
EP3699941A1 (en) * | 2019-02-21 | 2020-08-26 | Eaton Intelligent Power Limited | Switchgear |
JP2021508920A (ja) * | 2017-12-27 | 2021-03-11 | エルエス、エレクトリック、カンパニー、リミテッドLs Electric Co., Ltd. | 直流遮断器 |
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JP2016042430A (ja) * | 2014-08-18 | 2016-03-31 | 河村電器産業株式会社 | 直流遮断器 |
JP2021508920A (ja) * | 2017-12-27 | 2021-03-11 | エルエス、エレクトリック、カンパニー、リミテッドLs Electric Co., Ltd. | 直流遮断器 |
JP7094370B2 (ja) | 2017-12-27 | 2022-07-01 | エルエス、エレクトリック、カンパニー、リミテッド | 直流遮断器 |
US11430621B2 (en) | 2017-12-27 | 2022-08-30 | Ls Electric Co., Ltd. | DC circuit breaker |
EP3598468A1 (en) * | 2018-07-18 | 2020-01-22 | LSIS Co., Ltd. | Arc extinguishing unit of molded case circuit breaker |
CN110739166A (zh) * | 2018-07-18 | 2020-01-31 | Ls产电株式会社 | 配线用断路器的灭弧装置 |
US10811207B2 (en) | 2018-07-18 | 2020-10-20 | Lsis Co., Ltd. | Arc extinguishing unit of molded case circuit breaker |
CN110739166B (zh) * | 2018-07-18 | 2022-03-25 | Ls产电株式会社 | 配线用断路器的灭弧装置 |
EP3699941A1 (en) * | 2019-02-21 | 2020-08-26 | Eaton Intelligent Power Limited | Switchgear |
Also Published As
Publication number | Publication date |
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CN104321847B (zh) | 2016-08-31 |
CN104321847A (zh) | 2015-01-28 |
KR20140138843A (ko) | 2014-12-04 |
JP5084982B1 (ja) | 2012-11-28 |
KR101678288B1 (ko) | 2016-11-21 |
JPWO2013171903A1 (ja) | 2016-01-07 |
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