KR100832326B1 - Vacuum circuit breaker - Google Patents

Vacuum circuit breaker Download PDF

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Publication number
KR100832326B1
KR100832326B1 KR1020060139080A KR20060139080A KR100832326B1 KR 100832326 B1 KR100832326 B1 KR 100832326B1 KR 1020060139080 A KR1020060139080 A KR 1020060139080A KR 20060139080 A KR20060139080 A KR 20060139080A KR 100832326 B1 KR100832326 B1 KR 100832326B1
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South Korea
Prior art keywords
movable electrode
vacuum interrupter
vacuum
circuit breaker
terminal
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KR1020060139080A
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Korean (ko)
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김성태
신용운
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엘에스산전 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6642—Contacts; Arc-extinguishing means, e.g. arcing rings having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66276—Details relating to the mounting of screens in vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/046—Enhanced legend space by smaller actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/032—Anti-tamper

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

A vacuum circuit breaker is provided to reduce a size and a manufacturing cost by preventing increment of a size according to an additional installation of an insulator of a control rod by insulating in a vacuum interrupter with high dielectric strength. A vacuum circuit breaker includes an epoxy housing(250), a vacuum interrupter(200), and an insulation device. The epoxy housing includes an upper terminal(251), a lower terminal(252) connected to the outside, and an internal space. The vacuum interrupter is inserted into the internal space in forming the epoxy housing and electrically connected to the upper terminal and the lower terminal. The vacuum interrupter includes a fixed electrode(210) with a fixed electrode side contact(211) to be electrically connected to the upper terminal and a movable electrode(220) with a movable electrode side contact(221) selectively connected to the fixed contact according to opening and closing of a control rod(230). The insulating device is capable of reducing a length of the control rod by securing insulation through dielectric strength inside the vacuum interrupter. The control rod performs opening and closing by being connected to the vacuum interrupter.

Description

진공차단기{VACUUM CIRCUIT BREAKER}Vacuum Circuit Breaker {VACUUM CIRCUIT BREAKER}

도 1은 종래 진공차단기의 내부 구조를 나타낸 종단면도이고,1 is a longitudinal sectional view showing the internal structure of a conventional vacuum circuit breaker,

도 2는 본 발명의 일실시예에 따른 진공차단기의 내부구조를 도시한 종단면도이며,Figure 2 is a longitudinal sectional view showing the internal structure of the vacuum circuit breaker according to an embodiment of the present invention,

도 3은 도 2의 "A" 부분을 확대해서 보인 확대사시도이며,3 is an enlarged perspective view showing an enlarged portion "A" of FIG.

도 4는 도 2의 진공차단기의 접점이 접속된 상태에서 통전상태를 나타낸 종단면이다.4 is a longitudinal cross-sectional view illustrating an energized state in a state where the contacts of the vacuum circuit breaker of FIG. 2 are connected.

** 도면의 주요 부분에 대한 부호의 설명 **** Description of symbols for the main parts of the drawing **

200: 진공인터럽터 210: 고정전극200: vacuum interrupter 210: fixed electrode

211: 고정측접점 220: 가동전극211: fixed side contact 220: movable electrode

221: 가동측접점 222: 제1가동전극221: movable side contact point 222: first movable electrode

223: 제2가동전극 225: 세라믹절연체223: second movable electrode 225: ceramic insulator

230: 조작로드 240: 션트230: operation rod 240: shunt

245: 플렉시블메쉬 250: 에폭시하우징245: flexible mesh 250: epoxy housing

251: 상부터미널 252: 하부터미널251: From above 252: From above

260: 고정측실컵 270: 세라믹절연용기260: fixed side seal cup 270: ceramic insulated container

280: 가동측실컵 290: 금속기밀관280: movable side chamber cup 290: metal hermetic tube

295: 아킹쉴드 296: 센터플랜지295: Arcing Shield 296: Center Flange

본 발명은 진공차단기에 관한 것으로서, 더욱 상세히 말하면 절연내력이 우수한 진공인터럽터 내에서 절연함으로써 조작로드의 길이를 줄일 수 있도록 한 진공차단기에 관한 것이다.The present invention relates to a vacuum circuit breaker, and more particularly, to a vacuum circuit breaker capable of reducing the length of an operation rod by insulating in a vacuum interrupter having excellent dielectric strength.

일반적으로 차단기는 소호매질에 따라서 기름을 사용하는 유입차단기, 불활성 기체인 SF6 가스를 사용하는 가스차단기, 공기를 사용하는 공기차단기, 자기를 사용하는 자기차단기 및 진공의 우수한 절연내력을 사용하는 진공차단기 등으로 분류된다.In general, the breaker is an inlet breaker using oil, a gas breaker using SF6 gas as an inert gas, an air breaker using air, a magnetic breaker using magnetism, and a vacuum breaker using excellent dielectric strength of vacuum. And the like.

이 중에 진공차단기는 10-3Torr 이하의 진공 하에서 높은 절연내력을 갖는 장점을 이용하여 1960년대에 제품화에 성공하였으며, 고전압화, 대전류화, 및 소형화에 상당한 진척을 보이고 있다. 진공차단기에 있어서의 핵심 부품인 진공인터럽터는 진공상태를 유지하도록 긴밀히 밀폐된 절연용기와, 상기 절연용기 내에서 상호 접촉되는 가동전극과 고정전극을 구비하게 된다. Among them, the vacuum breaker succeeded in commercialization in the 1960s by using the advantage of having high dielectric strength under vacuum of 10-3 Torr or less, and has shown considerable progress in high voltage, high current, and miniaturization. The vacuum interrupter, which is a core component of the vacuum circuit breaker, includes an insulated container that is closely sealed to maintain a vacuum state, and a movable electrode and a fixed electrode which are in contact with each other in the insulating container.

좀더 자세히 설명하면 이러한 진공차단기에서 부하개폐 및 고장전류 차단은 진공인터럽터 내의 진공상태에서 이루어지나 진공인터럽터의 외부절연은 다양한 매질 속에서 이루어진다. In more detail, in these vacuum circuit breakers, load switching and fault current blocking are performed in a vacuum state in the vacuum interrupter, but external insulation of the vacuum interrupter is performed in various media.

즉, 브이씨비(VCB : Vacuum Circuit Breaker)처럼 진공인터럽터가 공기 속에 서 절연될 수도 있고, 오씨비(OCB : Oil Circuit Breaker)처럼 오일로 진공인터럽터가 감싸져 절연이 이루어지기도 하며, 고압개폐기처럼 SF6가스를 이용하여 절연이 이루어지기도 한다. That is, the vacuum interrupter may be insulated in the air like VCC (Vacuum Circuit Breaker), or the vacuum interrupter may be insulated with oil like OCB (Oil Circuit Breaker) to insulate and SF6 like high pressure switch. Insulation can also be achieved using gas.

그러나, 브이씨비(VCB) 같은 공기절연방식은 공기의 낮은 절연내력 때문에 높은 뇌충격전압을 요구하는 곳에서는 사용하지 못한다. 또한 오씨비(OCB) 같은 오일절연을 이용하는 경유는 오일의 폭발위험성 때문에 최근에는 거의 사용하지 않고 있다. 마지막으로 고압개폐기처럼 SF6 가스를 이용하는 경우는 폭발위험성은 없으나 환경적인 측면에서 점점 더 사용 규제를 받고 있는 실정이다.However, air insulation such as VCC cannot be used where high lightning shock voltage is required because of the low dielectric strength of air. In addition, diesel fuels using oil insulation, such as OCB, are rarely used in recent years due to the risk of oil explosion. Lastly, the use of SF6 gas, such as high pressure switch, has no risk of explosion, but is increasingly regulated in terms of environment.

이러한 경향에 의해 최근에는 고체절연 방식 중에 에폭시 성형시 진공인터럽터를 삽입하는 일체형 고체 절연방식이 사용되고 있으며, 첨부된 도면을 참조하여 상세히 살펴본다.Due to this trend, recently, an integrated solid insulation method for inserting a vacuum interrupter during epoxy molding in a solid insulation method has been used, and will be described in detail with reference to the accompanying drawings.

도 1은 종래 진공차단기의 내부 구조를 나타낸 종단면도이다.1 is a longitudinal sectional view showing the internal structure of a conventional vacuum circuit breaker.

도시된 바와 같이, 종래 진공차단기는 부하개폐 및 고장전류 차단이 이루어지는 진공인터럽터(100)가 상기 진공인터럽터(100)의 절연 및 지지 역할을 수행하는 에폭시하우징(150) 성형시 삽입되어 이루진다. 또, 상기 진공인터럽터(100)의 고정전극(110)을 상기 에폭시하우징(150)의 상부터미널(151)과 체결하여 상기 에폭시하우징(150)과 같은 형상의 캐비티를 갖는 금형에 삽입한 후 성형한다.As shown, the conventional vacuum circuit breaker is formed by inserting the vacuum interrupter 100, which is to open and close the load and the fault current blocking when forming the epoxy housing 150 to perform the insulating and supporting role of the vacuum interrupter (100). In addition, the fixed electrode 110 of the vacuum interrupter 100 is fastened to the terminal 151 from the top of the epoxy housing 150 and inserted into a mold having a cavity having the same shape as the epoxy housing 150 and then molded. .

더욱 상세하게는 소호부인 진공인터럽터(100)의 고정전극(110) 일측에는 통전부인 상부터미널(151)이 결합되고 상기 고정전극(110)의 타측에는 고정측접점(111)이 결합된다. 상기 진공인터럽터(100)의 가동전극(120) 일측에는 가동측점 점(121)이 결합되고 타측에는 구동메커니즘(미도시)과 연결되는 조작로드(130)가 결합된다. 상기 조작로드(130)는 통전부로부터 일정거리 이격되고 절연되도록 절연체(131)를 구비하여 이루어진다. More specifically, the terminal 151 is coupled to one side of the fixed electrode 110 of the vacuum interrupter 100, which is a arc extinguishing part, and the fixed side contact 111 is coupled to the other side of the fixed electrode 110. One side of the movable electrode 120 of the vacuum interrupter 100 is coupled to the movable side point 121, and the other side is coupled to the operation rod 130 is connected to the driving mechanism (not shown). The manipulation rod 130 is provided with an insulator 131 so as to be spaced apart and insulated from the energizing portion.

이때, 상기 가동전극(130)과 통전부인 하부터미널(152)은 션트(140)에 의해 연결되어 통전이 가능하게 이루어진다.At this time, the movable electrode 130 and the terminal 152 from the bottom of the energization part are connected by the shunt 140 to enable energization.

이러한 상기 진공인터럽터(100)는 진공기밀을 유지하기 위해 고정전극(110)에 고정측실컵(160)이 결합되고 상기 고정측실컵(160)은 세라믹절연용기(170)와 결합되어 있다.The vacuum interrupter 100 has a fixed side chamber cup 160 is coupled to the fixed electrode 110 and the fixed side chamber cup 160 is coupled with the ceramic insulating container 170 to maintain a vacuum tightness.

상기 세라믹절연용기(170)의 한쪽에는 가동측실컵(180)이 결합되고 상기 조작로드(130)에 의해 개폐동작시 진공기밀을 확보하기 위해 금속기밀관(190)이 상기 가동전극(120)과 가동측실컵(180)에 결합된다.A movable side seal cup 180 is coupled to one side of the ceramic insulating container 170, and a metal hermetic tube 190 is connected to the movable electrode 120 to secure a vacuum seal during the opening and closing operation by the manipulation rod 130. It is coupled to the movable side seal cup 180.

상기 진공인터럽터(100)의 내부에는 양측이 개구된 원통형상의 아킹쉴드(195)가 상기 가동측접점(121)과 고정측점점(111) 부근을 일정거리 이격되어 감싸도록 센터플랜지(196)에 의해 고정설치되고 상기 센터플랜지(196)는 상기 세라믹절연용기(170)에 삽입결합되어 이루어진다.The inside of the vacuum interrupter 100 has a cylindrical arcing shield 195 having both sides opened by a center flange 196 so as to surround the movable side contact 121 and the fixed side point 111 in a predetermined distance. The center flange 196 is fixedly installed and is inserted into and coupled to the ceramic insulating container 170.

이와 같이 구성된 종래 진공차단기는 다음과 같이 동작한다.The conventional vacuum circuit breaker configured as described above operates as follows.

구동메커니즘이 동작하여 상기 조작로드(130)가 상하방향으로 움직이게 되면 상기 조작로드(130)에 연결된 가동전극(120)의 가동측점점(121)이 상하로 움직이면서 고정측접점(111)과 접속 또는 이탈하게 된다. 이에 의해 부하가 개폐되거나 고장전류가 차단되는 것이다.When a driving mechanism is operated to move the manipulation rod 130 in the up and down direction, the movable side point 121 of the movable electrode 120 connected to the manipulation rod 130 moves up and down to connect with the fixed side contact 111 or You will be deviated. As a result, the load is opened or closed and the fault current is blocked.

이때 부하의 개폐 또는 고장전류의 차단은 진공인터럽터(100) 고유의 성능이나, 상간 절연 및 대지간 절연이 그 성능을 결정하는 중요한 요소이고, 외부로의 절연은 진공인터럽터(100)를 둘러싼 매질에 따라 그 성능이 결정되는바 고체절연방식의 진공인터럽터(100)는 에폭시하우징(150)에 의해 고성능 절연이 이루어지게 된다.At this time, the opening and closing of the load or the interruption of the fault current are inherent performance of the vacuum interrupter 100, but phase-to-phase insulation and earth-to-earth insulation are important factors for determining the performance, and the insulation to the outside is applied to the medium surrounding the vacuum interrupter 100. As a result, the performance is determined, the solid state vacuum interrupter 100 is a high performance insulation by the epoxy housing 150.

그러나, 전술한 바와 같은 종래 진공차단기는 통전부인 하부터미널(152)과 개폐동작을 위한 조작메커니즘과의 절연을 확보하기 위해 조작로드(130)의 절연거리 확보가 필요하다. However, the conventional vacuum circuit breaker as described above needs to secure the insulation distance of the operation rod 130 to ensure the insulation between the terminal 152 and the operation mechanism for the opening and closing operation.

이에 의해, 상기 조작로드(130)는 별도의 절연체(131)를 구비하게 되고 길이가 불필요하게 길어져 진공차단기의 크기가 커지는 문제가 있다.As a result, the operation rod 130 is provided with a separate insulator 131, the length is unnecessarily long, there is a problem that the size of the vacuum circuit breaker increases.

본 발명은 상기한 문제점을 감안하여 안출된 것으로서, 절연내력이 우수한 진공인터럽터 내에서 절연함으로써 조작로드의 길이를 줄일 수 있도록 함에 그 목적이 있다.The present invention has been made in view of the above-described problems, and an object thereof is to reduce the length of an operation rod by insulating in a vacuum interrupter having excellent insulation strength.

본 발명은 상술한 바와 같은 목적을 달성하기 위하여, 외측과 연결된 상부터미널과 하부터미널이 형성되고 내부공간을 갖는 에폭시하우징과; 상기 에폭시하우징의 성형시 내부공간에 삽입되고 상기 상부터미널과 하부터미널에 전기적으로 연결되는 진공인터럽터와; 상기 진공인터럽터 내부의 절연내력으로 절연성을 확보하여 상기 진공인터럽터와 연결되어 개폐동작을 하는 조작로드의 길이를 줄이도록 한 절연장치를; 포함하는 진공차단기를 제공한다.The present invention is an epoxy housing having an internal space and a terminal formed from the top and bottom terminals connected to the outside to achieve the object as described above; A vacuum interrupter inserted into an inner space during molding of the epoxy housing and electrically connected to a terminal from above and a terminal from below; An insulation device which secures insulation by the insulation strength inside the vacuum interrupter and reduces the length of the operation rod connected to the vacuum interrupter to open and close the operation; It provides a vacuum circuit breaker comprising a.

이하, 도면을 참조로 본 발명의 진동차단기에 대해 살펴본다.Hereinafter, with reference to the drawings looks at the vibration circuit breaker of the present invention.

도 2는 본 발명의 일실시예에 따른 진공차단기의 내부구조를 도시한 종단면도이고, 도 3은 도 2의 "A" 부분을 확대해서 보인 확대사시도이다.FIG. 2 is a longitudinal sectional view showing the internal structure of the vacuum circuit breaker according to the exemplary embodiment of the present invention, and FIG. 3 is an enlarged perspective view showing an enlarged portion "A" of FIG.

도시된 바와 같이, 본 발명의 진공차단기는 부하개폐 및 고장전류 차단이 이루어지는 진공인터럽터(200)가 상기 진공인터럽터(200)의 절연 및 지지 역할을 수행하는 에폭시하우징(250) 성형시 삽입되어 이루어진다. 또, 상기 진공인터럽터(200)의 고정전극(210)을 상기 에폭시하우징(250)의 상부터미널(251)과 체결하여 상기 에폭시하우징(250)과 같은 형상의 캐비티를 갖는 금형에 삽입한 후 성형한다.As shown, the vacuum circuit breaker of the present invention is inserted into the vacuum interrupter 200 is formed when the epoxy housing 250, which serves to insulate and support the vacuum interrupter 200, the load interruption and the fault current blocking. In addition, the fixed electrode 210 of the vacuum interrupter 200 is fastened to the terminal 251 from the epoxy housing 250 and inserted into a mold having a cavity having the same shape as the epoxy housing 250 and then molded. .

더욱 상세하게는 소호부인 진공인터럽터(200)의 고정전극(210) 일측에는 통전부인 상부터미널(251)이 결합되고 상기 고정전극(210)의 타측에는 고정측접점(211)이 결합된다. 상기 진공인터럽터(200)의 가동전극(220) 일측에는 가동측접점(221)이 결합되고 타측에는 구동메커니즘(미도시)과 연결되는 조작로드(230)가 결합된다.More specifically, the terminal 251 is coupled to one side of the fixed electrode 210 of the vacuum interrupter 200 which is the arc extinguishing part, and the fixed side contact 211 is coupled to the other side of the fixed electrode 210. A movable side contact 221 is coupled to one side of the movable electrode 220 of the vacuum interrupter 200, and an operation rod 230 coupled to a driving mechanism (not shown) is coupled to the other side.

이러한 상기 진공인터럽터(200)는 진공기밀을 유지하기 위해 상기 고정전극(210)에 고정측실컵(260)이 결합되고 상기 고정측실컵(260)은 세라믹절연용기(270)와 결합되어 있다.The vacuum interrupter 200 is a fixed side chamber cup 260 is coupled to the fixed electrode 210 and the fixed side chamber cup 260 is coupled to a ceramic insulating container 270 to maintain a vacuum tightness.

상기 세라믹절연용기(270)의 한쪽에는 가동측실컵(280)이 결합되고 상기 조작로드(230)에 의해 개폐동작시 진공기밀을 확보하기 위해 금속기밀관(290)이 상기 가동전극(220)과 가동측실컵(280)에 결합된다.A movable side seal cup 280 is coupled to one side of the ceramic insulating container 270, and a metal hermetic tube 290 is connected to the movable electrode 220 to secure a vacuum seal during the opening and closing operation by the operation rod 230. It is coupled to the movable side seal cup (280).

상기 가동전극(220)은 상기 진공인터럽터(200) 내부에 위치되고 상기 가동측접점(221)이 결합되는 제1가동전극(222)과, 상기 진공인터럽터(200)의 외측으로 연장되고 조작로드(230)가 결합되는 제2가동전극(223)으로 이루어진다.The movable electrode 220 is positioned inside the vacuum interrupter 200 and extends to the outside of the vacuum interrupter 200 and the first movable electrode 222 to which the movable side contact 221 is coupled. The second movable electrode 223 to which the 230 is coupled is formed.

이때, 상기 제1가동전극(222)과 제2가동전극(223)은 세라믹절연체(225)에 의해 구획되어 각각 통전측과 절연측이 된다.In this case, the first movable electrode 222 and the second movable electrode 223 are partitioned by the ceramic insulator 225 to become an energizing side and an insulating side, respectively.

또, 상기 세라믹절연체(225)는 양단 표면에 메탈라이징(Metallizing)(226)하여 금속성을 띠게 함으로써 상기 제1가동전극(222)과 제2가동전극(223)이 상기 세라믹절연체(225)에 결합이 용이하도록 형성된다.In addition, the ceramic insulator 225 is metallized (Metallizing) 226 on both surfaces thereof to be metallic, so that the first movable electrode 222 and the second movable electrode 223 are coupled to the ceramic insulator 225. It is formed to be easy.

상기 진공인터럽터(200)의 내부에는 양측이 개구된 원통형상의 아킹쉴드(295)가 상기 가동측접점(221)과 고정측점점(211) 부근을 일정거리 이격되어 감싸도록 센터플랜지(296)에 의해 고정설치되고 상기 센터플랜지(296)는 상기 세라믹절연용기(270)에 삽입결합되어 이루어진다.The inside of the vacuum interrupter 200 has a cylindrical arcing shield 295 having both sides opened by a center flange 296 so as to surround the movable side contact 221 and a fixed side point 211 in a predetermined distance. The center flange 296 is fixedly installed and is inserted into and coupled to the ceramic insulating container 270.

특히, 상기 제1가동전극(222)과 상기 아킹쉴드(295)는 접점이 연결되어 전기적으로 연결되도록 션트(240)가 결합된다. 이러한 상기 션트(240)는 일단이 상기 제1가동전극(222)에 연결되고 타단이 상기 아킹쉴드(295)에 연결되되 상기 가동전극(220)의 왕복운동시 탄력적으로 변형되어 그 양단이 상기 제1가동전극(222)과 아킹쉴드(295)에서 결합상태가 떨어지지 않도록 함이 바람직하다.In particular, the shunt 240 is coupled to the first movable electrode 222 and the arcing shield 295 so that the contacts are electrically connected to each other. The shunt 240 has one end connected to the first movable electrode 222 and the other end connected to the arcing shield 295, and elastically deformed during the reciprocating motion of the movable electrode 220, so that both ends of the shunt 240 are formed. It is preferable that the coupling state of the movable electrode 222 and the arcing shield 295 does not fall.

또한, 상기한 센터플렌지(296)와 하부터미널(252)이 전기적으로 연결되도록 플렉시블메쉬(Flexible Mesh)(245)가 에폭시하우징(250) 내부에 설치된다. 즉, 상기 플렉시블메쉬(245)는 일단이 상기 센터플렌지(296)에 연결되고 타단이 상기 하 부터미널(252)에 볼팅이나 용접에 의해 연결되어 이루어진다.In addition, a flexible mesh 245 is installed inside the epoxy housing 250 so that the center flange 296 and the terminal 252 are electrically connected to each other. That is, one end of the flexible mesh 245 is connected to the center flange 296 and the other end is connected to the terminal 252 by bolting or welding.

이와 같이 구성된 본 발명의 진공차단기는 다음과 같이 동작한다.The vacuum circuit breaker of the present invention configured as described above operates as follows.

구동메커니즘이 동작하여 상기 조작로드(230)가 상하방향으로 움직이게 되면 상기 조작로드(230)에 연결된 가동전극(220)의 가동측점점(221)이 상하로 움직이면서 고정측점점(211)과 접속 또는 이탈하게 된다. 이에 의해 부하가 개폐되거나 고장전류가 차단되는 것이다.When a driving mechanism is operated to move the operation rod 230 in the up and down direction, the movable point 221 of the movable electrode 220 connected to the manipulation rod 230 moves up and down to connect with the fixed point 211. You will be deviated. As a result, the load is opened or closed and the fault current is blocked.

특히, 통전 상태에서 전기 흐름은 도 4를 참조하면 상부터미널(251), 고정전극(210), 고정측접점(211), 가동측접점(221), 제1가동전극(222), 션트(240), 아킹쉴드(295), 센터플렌지(296), 플렉시블메쉬(245) 및 하부터미널(252)을 차례로 거치게 된다. 이와 동시에 세라믹절연체(225)가 상기 가동전극(220)을 구획하여 제2가동전극(223)에 결합되는 조작로드(230) 및 구동메커니즘은 절연상태가 된다.In particular, in the energized state, the flow of electricity is shown in FIG. 4 from the top of the terminal 251, the fixed electrode 210, the fixed side contact 211, the movable side contact 221, the first movable electrode 222, and the shunt 240. ), The arcing shield 295, the center flange 296, the flexible mesh 245 and the bottom terminal 252 in order. At the same time, the operation rod 230 and the driving mechanism in which the ceramic insulator 225 partitions the movable electrode 220 and is coupled to the second movable electrode 223 are in an insulated state.

즉, 본 발명의 진공차단기는 종래와 같이 통전부인 하부터미널과 개폐동작을 위한 조작메커니즘과의 절연을 위해 조작로드의 절연거리를 확보할 필요가 없게 된다. That is, the vacuum circuit breaker of the present invention does not need to secure the insulation distance of the operation rod for insulation between the terminal and the operation mechanism for the opening and closing operation as before.

이상에서 살펴본 바와 같이, 본 발명의 일실시예에 의한 진공차단기는 가동전극을 통전측과 절연측으로 구획하는 세라믹절연체를 구비하고, 절연내력이 우수한 진공인터럽터 내에서 절연함으로써 조작로드의 절연체 구비에 따른 진공차단기 크기가 커지는 문제를 해결할 수 있다.As described above, the vacuum circuit breaker according to the embodiment of the present invention includes a ceramic insulator for dividing the movable electrode into an energized side and an insulated side, and insulates the vacuum interrupter having excellent dielectric strength according to the insulator of the operation rod. It can solve the problem of increasing the size of the vacuum circuit breaker.

따라서, 진공차단기를 소형화할 수 있고 그만큼 제조비용이 절감되는 효과가 있다. Therefore, the vacuum circuit breaker can be miniaturized and the manufacturing cost can be reduced accordingly.

Claims (6)

외측과 연결된 상부터미널과 하부터미널이 형성되고 내부공간을 갖는 에폭시하우징과;An epoxy housing formed from a terminal and a lower terminal connected to the outside and having an inner space; 상기 에폭시하우징의 성형시 내부공간에 삽입되고 상기 상부터미널과 하부터미널에 전기적으로 연결되며, It is inserted into the inner space during the molding of the epoxy housing and electrically connected to the terminal from the top and the bottom, 상기 상부터미널과 전기적으로 연결되도록 고정측접점을 갖는 고정전극과, 상기 조작로드의 개폐동작에 따라 상기 고정측접점과 선택적으로 접속되는 가동측접점을 갖는 가동전극을 구비하고,A fixed electrode having a fixed side contact to be electrically connected to the terminal from above, and a movable electrode having a movable side contact selectively connected to the fixed side contact according to the opening and closing operation of the operation rod, 상기 가동전극은,The movable electrode, 상기 진공인터럽터 내부에 위치되고 상기 가동측접점이 결합되는 제1가동전극과, 상기 제1가동전극과 전기적으로 분리되고 상기 조작로드가 결합되는 제2가동전극을 구비하는 진공인터럽터와;A vacuum interrupter including a first movable electrode positioned inside the vacuum interrupter and coupled to the movable side contact point, and a second movable electrode electrically separated from the first movable electrode and coupled to the operation rod; 상기 진공인터럽터 내부의 절연내력으로 절연성을 확보하여 상기 진공인터럽터와 연결되어 개폐동작을 하는 조작로드의 길이를 줄이도록 한 절연장치를; 포함하는 진공차단기.An insulation device which secures insulation by the insulation strength inside the vacuum interrupter and reduces the length of the operation rod connected to the vacuum interrupter to open and close the operation; Vacuum breaker comprising. 삭제delete 삭제delete 제 1 항에 있어서, 상기 절연장치는,The method of claim 1, wherein the insulation device, 상기 제1가동전극과 상기 하부터미널이 전기적으로 연결되도록 형성되는 것을 특징으로 하는 진공차단기.And the first movable electrode and the terminal are electrically connected to each other. 제 1 항에 있어서, 상기 절연장치는,The method of claim 1, wherein the insulation device, 상기 제1가동전극과 제2가동전극을 구획하도록 결합되는 세라믹절연체를 포함하는 진공차단기. And a ceramic insulator coupled to partition the first movable electrode and the second movable electrode. 제 5항에 있어서, 상기 세라믹절연체는,The method of claim 5, wherein the ceramic insulator, 양단 표면이 메탈라이징되어 상기 제1가동전극과 제2가동전극이 양단에 용이하게 결합되도록 형성되는 것을 특징으로 하는 진공차단기.The both ends of the surface is metallized so that the first movable electrode and the second movable electrode is formed to be easily coupled to both ends of the vacuum circuit breaker.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101093445B1 (en) * 2010-09-27 2011-12-19 주식회사 비츠로테크 Vacuum circuit breaker
KR200460509Y1 (en) 2011-02-25 2012-05-25 엘에스산전 주식회사 Main circuit portion assembly of vacuum circuit breake
KR101191331B1 (en) 2011-08-22 2012-10-24 설연우 Vacuum interrupter
US10978256B1 (en) 2013-03-15 2021-04-13 Innovative Switchgear IP, LLC Electrical switching device

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Publication number Priority date Publication date Assignee Title
US5387772A (en) 1993-11-01 1995-02-07 Cooper Industries, Inc. Vacuum switch
KR100192109B1 (en) 1995-10-04 1999-06-15 다니구찌 이찌로오, 기타오카 다카시 Vacuum circuit breaker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387772A (en) 1993-11-01 1995-02-07 Cooper Industries, Inc. Vacuum switch
KR100192109B1 (en) 1995-10-04 1999-06-15 다니구찌 이찌로오, 기타오카 다카시 Vacuum circuit breaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101093445B1 (en) * 2010-09-27 2011-12-19 주식회사 비츠로테크 Vacuum circuit breaker
KR200460509Y1 (en) 2011-02-25 2012-05-25 엘에스산전 주식회사 Main circuit portion assembly of vacuum circuit breake
KR101191331B1 (en) 2011-08-22 2012-10-24 설연우 Vacuum interrupter
US10978256B1 (en) 2013-03-15 2021-04-13 Innovative Switchgear IP, LLC Electrical switching device

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