KR20010058529A - Pumping device for automatic transfer switches - Google Patents

Pumping device for automatic transfer switches Download PDF

Info

Publication number
KR20010058529A
KR20010058529A KR1019990065872A KR19990065872A KR20010058529A KR 20010058529 A KR20010058529 A KR 20010058529A KR 1019990065872 A KR1019990065872 A KR 1019990065872A KR 19990065872 A KR19990065872 A KR 19990065872A KR 20010058529 A KR20010058529 A KR 20010058529A
Authority
KR
South Korea
Prior art keywords
rotary
pumping
link
rotating
main
Prior art date
Application number
KR1019990065872A
Other languages
Korean (ko)
Other versions
KR100360597B1 (en
Inventor
정선임
Original Assignee
정선임
주식회사 피스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 정선임, 주식회사 피스코 filed Critical 정선임
Priority to KR1019990065872A priority Critical patent/KR100360597B1/en
Publication of KR20010058529A publication Critical patent/KR20010058529A/en
Application granted granted Critical
Publication of KR100360597B1 publication Critical patent/KR100360597B1/en

Links

Classifications

    • 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
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • 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
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/018—Application transfer; between utility and emergency power supply

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

PURPOSE: An automatic power supply switching device is provided to prevent defect due to arc and assure sure break and conductance by preventing the interference between shafts when a lever is being rotated and by instantaneously conducting and breaking a conducting part when the lever is completely rotated. CONSTITUTION: A rotating bush(11) having a connector(12) and a rotating link(13) is slidably inserted into a main rotating shaft(9) of a pumping part. Two fixing links(19) on both sides of the rotating bush(11) is connected to the main shaft(9) by welding. A bottom end of the rotating link(13) of the rotating bush(11) is rotatably coupled to a top end of a swivel pipe(15) through a connecting pin(18). A coil spring(17) is inserted between top/bottom connecting pins(14,18) of the swivel pipe(15).

Description

기중 차단기의 펌핑장치{Pumping device for automatic transfer switches}Pumping device for automatic transfer switches

본 발명은 산업현장등에서 과전류와 과전압을 차단하는 기중차단기에 관한 것으로,The present invention relates to an air circuit breaker for blocking over current and over voltage in industrial sites, etc.

특히, 과전류나 과전압에 의해 차단된 기중차단기를 수동으로 다시 연결할 때나 수동으로 기중차단기를 차단할 때 순간적인 통전과 차단이 이루어질 수 있도록 하는 기중차단기의 펌핑장치에 관한 것이다.In particular, the present invention relates to a pumping device for an air circuit breaker which enables instant energization and interruption when the air circuit breaker blocked by overcurrent or over voltage is manually reconnected or when the air circuit breaker is manually disconnected.

일반적으로 기중차단기의 펌핑장치는 모두 솔레노이드 전자방식이므로 동작시 많은 전류가 필요하였고 별도의 교류전원장치를 하여야 하였으며, 작동시 전력의 소모량이 35A-45A나 되어 그 손실이 막대 하였고, 약한 전원장치에서는 전압이 떨어짐으로 인하여 통전과 차단 속도가 일정치 못하여 기계적 전기적 손실이 크면서도 안정성이 없고 수명이 짧은 문제점이 있었다.Generally, the pumping device of the air circuit breaker is solenoid electronic type, so it requires a lot of current during operation and a separate AC power supply is needed. Due to the drop in voltage, the energization and breaking speeds were not constant, resulting in a large mechanical and electrical loss but no stability and a short lifespan.

또한, 종래의 기중차단기는 모터로 펌핑작용을 할 수 있도록 한 것도 개발되었으나, 이는 모터의 축에 워엄을 형성하고 그 워엄의 회전을 부채형기어에 전달하여 펌핑작용을 할 수 있도록 한 것이므로 펌핑시간이 길어지고 원하는 정도의 전류절약의 효과를 얻을 수 없었을 뿐만 아니라, 고정접촉자와 이동접촉자로 구성되는 통전부와 그 통전부의 차단 및 통전시에 발생되는 아아크를 흡수하는 방전부를 각각 구성함으로서 방전의 효과가 현저하게 감소되어 아아크에 의한 불량발생률이 높아지는 문제점이 있었다.In addition, the conventional air circuit breaker has also been developed to perform the pumping action by the motor, but this is to form a worm on the shaft of the motor and to transfer the rotation of the worm to the fan-shaped gear to pump the pumping time This long and desired current saving effect could not be obtained, and the electric discharge part composed of the fixed contactor and the mobile contactor and the discharge part absorbing the arc generated at the time of interruption and energization of the electric discharge part were respectively constructed. There was a problem that the effect is significantly reduced and the incidence of defects due to arc is increased.

근래에는 작업자가 손으로 레버를 당기면 통전되거나 차단되도록 한 펌핑장치도 개발되었으나, 이는 기중차단기의 프론트판넬내에는 펌핑부를 구성하고 그 후면부에는 통전부를 구성하되 그 펌핑부는 핸들이 고정된 핸들축을 펌핑하여 회전시키면 크랭크판이 회전되고 그 크랭크판의 회전은 회동판에 전달되어 핀으로 연결된 한쌍의 링크편을 회동시키며, 상기 회동판의 일측단은 상기 한쌍의 링크편중 일측의 링크편은 회동판의 일측단부에 핀으로 연결되고 타측의 링크편은 연결회전축의 연결편에 결합되도록 구성한 것이었다.In recent years, a pumping device has been developed to allow the operator to energize or shut off the lever by hand, but this consists of a pumping part in the front panel of the circuit breaker and an energizing part in the rear part, but the pumping part pumps a handle shaft with a fixed handle. When the crank plate rotates, the rotation of the crank plate is transmitted to the rotating plate to rotate a pair of link pieces connected by pins, and one side end of the rotating plate is one side of the pair of link pieces of the rotating plate. The link piece on the other side was configured to be connected to the connecting piece of the connecting rotary shaft.

그러나, 상기와 같은 기계식 펌핑장치도 레버를 당길 때 통전부의 축이 간섭을 받으면서 조금씩 회전되므로 순간적인 차단이나 통전은 시킬 수 없는 문제점이 있었으며, 이로 인하여 통전부의 차단 및 통전시에 발생되는 아아크의 방전효과가 현저하게 감소되어 아아크에 의한 불량발생률이 높아지는 문제점이 있었다.However, the mechanical pumping device as described above also has a problem in that the shaft of the energizing part rotates little by little when the lever is pulled, so that the momentary interruption or energization cannot be performed. There was a problem that the discharge effect of the markedly reduced due to the high incidence of defects due to arc.

따라서, 본 발명의 목적은 산업현장등에서 과전류와 과전압을 차단하는 기중차단기의 통전부를 수동으로 통전 및 차단시킬 때 레버를 회전시키는 동안에는 통전부의 축이 간섭되지 않도록 하고, 레버가 완전하게 회전되었을 때 통전부를 순간적으로 통전 및 차단할 수 있도록 함으로서 아아크에 의한 불량발생을 방지하고, 확실한 차단과 통전이 가능토록 한 기중차단기의 펌핑장치를 제공함에 있다.Accordingly, an object of the present invention is to prevent the shaft of the energizing portion from interfering while rotating the lever when manually energizing and interrupting the energizing portion of the air circuit breaker that blocks overcurrent and overvoltage in an industrial site, and the like. When it is possible to instantaneously energize and cut off the energizing part to prevent the occurrence of defects by the arc, and to provide a pumping device of the air circuit breaker to enable a reliable blocking and energization.

도 1은 본 발명의 기중차단기를 보인 일분 분해 사시도1 is an exploded perspective view showing the air circuit breaker of the present invention

도 2는 본 발명의 펌핑부를 보인 사시도2 is a perspective view showing a pumping part of the present invention

도 3a, 도 3b, 도 3c는 본 발명의 동작상태도3a, 3b, 3c is an operating state diagram of the present invention

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 : 기중차단기 2 : 통전부1: Circuit Breaker 2: Current Conduction Part

3 : 레버 4 : 펌핑부3: lever 4: pumping part

5, 6 : 솔레노이드 7, 8 : 리미트스위치5, 6: solenoid 7, 8: limit switch

9 : 메인회전축 10 : 펌핑장치9: main shaft 10: pumping device

11 : 회전부시 12 : 연결구11: rotating bush 12: connector

13 : 회전링크 14, 18 : 연결핀13: rotary link 14, 18: connecting pin

15 : 회동파이프 16 : 절개부15: rotating pipe 16: incision

17 : 코일스프링 19 : 고정링크17: coil spring 19: fixed link

이하, 본 발명의 바람직한 실시예를 첨부 도면에 의하여 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

통전부(2)와 펑핑부(4)로 구성되는 기중차단기(1)는 메인회전축(9)으로 통전부(2)와 펌핑부(4)가 연결된다.The air circuit breaker 1 composed of the energizing part 2 and the pinging part 4 is connected to the energizing part 2 and the pumping part 4 by the main rotary shaft 9.

또한, 상기 통전부(2)측의 메인회전축(9)에는 고정단자의 통전과 차단을 위한 접속단자가 통상의 기중차단기와 같이 구성되며, 펌핑부(4) 내에는 전기적으로 메인회전축(9)을 동작시키기 위한 한쌍의 솔레노이드(5)(6)와 리미트스위치(7)(8)가 구비되고, 그 펌핑부(4)측의 메인회전축(9)에는 수동조작을 위한 펌핑장치(11)가 구성된다.In addition, the main rotary shaft (9) on the side of the energizing portion (2) has a connection terminal for energizing and blocking the fixed terminal is configured as a conventional air circuit breaker, the pumping portion (4) is electrically connected to the main rotary shaft (9) A pair of solenoids (5) (6) and limit switches (7) (8) are provided for operating the pump, and a pumping device (11) for manual operation is provided at the main rotary shaft (9) of the pumping part (4) side. It is composed.

이때, 본 발명에 의한 펌핑장치(11)는 펌핑부(4)측의 메인회전축(9)에 연결구(12)와 회전링크(13)가 고정구비된 회전부시(11)를 회전가능하게 삽입하고, 그 회전부시(11)의 양측에는 고정링크(19)를 구비하면서 메인회전축(9)에 고정링크(19)를 용접하여 결합하며, 상기 회전부시(11)의 회전링크(13) 하단은 회동파이프(15)의 상부와 연결핀(14)으로 회전가능하게 결합하고, 그 회동파이프(15)의 절개부(16)가 형성된 하단은 고정링크(19)의 하단과 연결핀(18)으로 결합하면서 상기 회동파이프(15)의 내부에는 코일스프링(17)을 삽입하여 회동파이프(15) 상,하부의 상기 연결핀(14)(18)사이에 설치한다.At this time, the pumping device 11 according to the present invention rotatably inserts the rotary bush 11, the connector 12 and the rotary link 13 is fixed to the main rotary shaft 9 of the pumping unit 4 side. On both sides of the rotary bush 11, fixed links 19 are provided on both sides of the rotary bush 11, and the fixed links 19 are welded to the main rotary shaft 9, and the lower end of the rotary link 13 of the rotary bush 11 is rotated. The upper part of the pipe 15 is rotatably coupled to the connecting pin 14, and the lower end formed with the cutout 16 of the rotating pipe 15 is coupled to the lower end of the fixed link 19 and the connecting pin 18. While inserting the coil spring (17) in the inside of the rotating pipe 15 is installed between the connecting pins 14, 18 of the upper and lower rotating pipe 15.

상기와 같이 펌핑장치(11)를 구성할 때 회전링크(13)와 회동파이프(15)를 연결한 길이를 고정링크(19)의 길이보다 길게 형성하고, 회동파이프(15) 하측의 절개부(16)는 회전링크(13)와 회동파이프(15)를 연결한 연결핀(14)이 고정링크(19) 사이를 지나갈 수 있도록 장홈형상으로 구성하는 것이 바람직하다.When the pumping device 11 is configured as described above, the length of connecting the rotary link 13 and the rotary pipe 15 is formed longer than the length of the fixed link 19, and the cutout portion below the rotary pipe 15 ( 16 is preferably configured in the shape of a long groove so that the connecting pin 14 connecting the rotary link 13 and the rotating pipe 15 can pass between the fixed link (19).

이와 같이 구성된 본 발명은 기중차단기(1)를 수동으로 통전 및 차단시키려면 먼저 막대형 레버(3)를 연결구(12)에 삽입하고, 통전이나 차단을 위한 방향으로 레버(3)를 회전시키면 레버(3)의 회전이 끝날 무렵에 회동파이프(15)와 고정링크(19)를 연결한 연결핀(18)이 순간적으로 반대방향으로 이동하여 통전 및 차단을 시키게 된다.In the present invention configured as described above, in order to manually energize and block the air circuit breaker 1, the rod-shaped lever 3 is first inserted into the connector 12, and the lever 3 is rotated in the direction for energizing or blocking the lever. At the end of the rotation of (3), the connecting pin 18 connecting the rotary pipe 15 and the fixed link 19 is momentarily moved in the opposite direction to conduct and cut off.

즉, 도 3a에 도시된 바와 같이 회동파이프(15)와 고정링크(19)를 연결한 연결핀(18)이 좌측의 리미트스위치(7)를 누르고 있는 상태에서 연결구(12)에 삽입된 레버(3)를 우측으로 당기면 연결구(12)와 회전부시(11) 및 회전링크(13)가 메인회전축(9)을 중심으로 회전하게 된다.That is, as shown in FIG. 3A, a lever inserted into the connector 12 while the connecting pin 18 connecting the rotational pipe 15 and the fixing link 19 is pressing the limit switch 7 on the left side ( Pulling 3) to the right causes the connector 12, the rotary bush 11, and the rotary link 13 to rotate about the main rotary shaft 9.

이때, 상기 메인회전축(9)에는 회전부시(11)가 회전가능하게 결합된 상태이므로 메인회전축(9)은 회전하지 않는다.At this time, since the rotating bush 11 is rotatably coupled to the main rotating shaft 9, the main rotating shaft 9 does not rotate.

상기와 같이 레버(3)에 의해 회전링크(13)가 회전하면 연결핀(14)에 의해 회전가능하게 결합된 회동파이프(15)는 상측이 좌측으로 회전되므로 결국은 도 3b에 도시된 바와 같이 회전링크(13)와 회동파이프(15) 및 고정링크(19)가 일직선을 이루는 위치에 오게 된다.When the rotary link 13 is rotated by the lever 3 as described above, the rotary pipe 15 rotatably coupled by the connecting pin 14 is rotated to the left side, and as shown in FIG. 3B. The rotary link 13, the rotation pipe 15 and the fixed link 19 is in a straight line position.

이어서 레버(3)를 조금더 오른쪽으로 당기면 회전링크(13)와 회동파이프(15)를 연결한 연결핀(14)이 고정링크(19)의 중심축선을 지나게 되고, 이로 인하여 회동파이프(15) 상,하측의 연결핀(14)(18) 사이에 설치된 코일스프링(17)의 탄성력이 회동파이프(15)와 고정링크(19)의 하단을 결합한 연결핀(18)을 우측으로 밀게 되므로 그 연결핀(18)과 고정링크(19) 및 메인회전축(9)이 도 3c와 같이 반대편 리미트스위치(8)까지 순간적으로 회전되는 것이다.Subsequently, when the lever 3 is pulled a little further to the right, the connecting pin 14 connecting the rotary link 13 and the rotary pipe 15 passes through the central axis of the fixed link 19, thereby causing the rotary pipe 15 to be rotated. Since the elastic force of the coil spring 17 installed between the upper and lower connecting pins 14 and 18 pushes the connecting pin 18, which combines the rotation pipe 15 and the lower end of the fixing link 19, to the right. The pin 18, the fixed link 19 and the main rotary shaft 9 is instantaneously rotated to the opposite limit switch 8 as shown in Figure 3c.

상기와 같이 본 발명은 레버(3)를 회전시키는 과정에서도 메인회전축(9)의 회전은 이루어지지 않고, 레버의 회전이 끝날 무렵에야 메인회전축(9)이 회전하여 기중차단기(1)를 통전 및 차단시키므로 안정되게 기중차단기(1)를 펌핑할 수 있게 된다.As described above, the present invention does not rotate the main rotary shaft 9 even in the process of rotating the lever 3, and the main rotary shaft 9 rotates until the end of the rotation of the lever to energize the air circuit breaker 1. Since it blocks, the air circuit breaker 1 can be pumped stably.

상기에서와 같이 본 발명은 레버를 회전시키는 과정에서도 메인회전축의 회전은 이루어지지 않고, 레버의 회전이 끝날 무렵에야 메인회전축이 회전하여 기중차단기를 통전 및 차단시킬 수 있도록 함으로서 산업현장등에서 과전류와 과전압을 차단하는 기중차단기가 수동조작시에도 순간적으로 통전 및 차단동작이 가능하게 될 뿐만 아니라, 이로 인하여 아아크에 의한 불량발생을 방지하고, 확실한 차단과 통전이 가능해지는 효과가 제공되는 것이다.As described above, the present invention does not rotate the main rotating shaft even in the process of rotating the lever, and the main rotating shaft rotates only when the lever is finished, so that the air circuit breaker can be energized and cut off. The air circuit breaker for blocking the power supply and interruption operation can be instantaneously even during manual operation, thereby preventing the occurrence of defects due to arcing, and providing the effect of enabling reliable blocking and energization.

Claims (2)

통전부(2)와 펑핑부(4)로 구성되는 기중차단기(1)의 통전부(2)와 펌핑부(4)를 메인회전축(9)으로 연결하고, 상기 통전부(2)측의 메인회전축(9)에는 고정단자의 통전과 차단을 위한 접속단자가 구비되며, 펌핑부(4) 내에는 전기적으로 메인회전축(9)을 동작시키기 위한 한쌍의 솔레노이드(5)(6)와 리미트스위치(7)(8)가 구비되고, 그 펌핑부(4)측의 메인회전축(9)에는 수동조작을 위한 펌핑장치가 구성되는 기중차단기의 펌핑장치에 있어서,The energization part 2 and the pumping part 4 of the air circuit breaker 1 which consists of an electricity supply part 2 and the punching part 4 are connected by the main rotating shaft 9, and the main part by the said electricity supply part 2 side The rotary shaft 9 is provided with a connection terminal for energizing and blocking the fixed terminal, and a pair of solenoids 5 and 6 and a limit switch in the pumping unit 4 for electrically operating the main rotary shaft 9. In the pumping apparatus of the air circuit breaker, which is provided with a 7) (8), and a pumping apparatus for manual operation is formed in the main rotary shaft 9 on the pumping section 4 side, 펌핑장치(11)는 펌핑부(4)측의 메인회전축(9)에 연결구(12)와 회전링크(13)가 고정구비된 회전부시(11)를 회전가능하게 삽입하고, 그 회전부시(11)의 양측에는 고정링크(19)를 구비하면서 메인회전축(9)에 고정링크(19)를 용접하여 결합하며, 상기 회전부시(11)의 회전링크(13) 하단은 회동파이프(15)의 상부와 연결핀(14)으로 회전가능하게 결합하고, 그 회동파이프(15)의 절개부(16)가 형성된 하단은 고정링크(19)의 하단과 연결핀(18)으로 결합하면서 상기 회동파이프(15)의 내부에는 코일스프링(17)을 삽입하여 회동파이프(15) 상,하부의 상기 연결핀(14)(18)사이에 설치하여서 됨을 특징으로 한 기중차단기의 펌핑장치.The pumping device 11 rotatably inserts the rotary bush 11 having the connector 12 and the rotary link 13 fixedly connected to the main rotary shaft 9 on the pumping unit 4 side, and the rotary bush 11 The fixed link 19 is provided on both sides of the coupling while welding the fixed link 19 to the main rotary shaft (9), the lower end of the rotary link (13) of the rotary bush 11 is the upper portion of the rotary pipe (15) And rotatably coupled to the connecting pin 14, the lower end of which the cutout 16 of the rotating pipe 15 is formed is coupled to the lower end of the fixed link 19 by the connecting pin 18 and the rotating pipe 15. The pumping device of the air circuit breaker, characterized in that the coil spring (17) is inserted between the connecting pins (14, 18) on the upper and lower portions of the rotating pipe (15). 청구항 1에 있어서,The method according to claim 1, 상기 펌핑장치(11)의 회전링크(13)와 회동파이프(15)를 연결한 길이는 고정링크(19)의 길이보다 길게 형성하고, 회동파이프(15) 하측의 절개부(16)는 회전링크(13)와 회동파이프(15)를 연결한 연결핀(14)이 고정링크(19) 사이를 지나갈 수 있도록 장홈형상으로 구성하여서 됨을 특징으로 한 기중차단기의 펌핑장치.The length of connecting the rotary link 13 and the rotary pipe 15 of the pumping device 11 is formed longer than the length of the fixed link 19, the incision 16 below the rotary pipe 15 is the rotary link Pumping device of the air circuit breaker, characterized in that the connecting pin (14) connecting the 13 and the rotating pipe (15) is configured in a long groove shape so as to pass between the fixed link (19).
KR1019990065872A 1999-12-30 1999-12-30 Transfer device for automatic transfer switches KR100360597B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019990065872A KR100360597B1 (en) 1999-12-30 1999-12-30 Transfer device for automatic transfer switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019990065872A KR100360597B1 (en) 1999-12-30 1999-12-30 Transfer device for automatic transfer switches

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR2019990030523U Division KR200186075Y1 (en) 1999-12-30 1999-12-30 Transfer device for automatic transfer switches

Publications (2)

Publication Number Publication Date
KR20010058529A true KR20010058529A (en) 2001-07-06
KR100360597B1 KR100360597B1 (en) 2002-11-18

Family

ID=19633032

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019990065872A KR100360597B1 (en) 1999-12-30 1999-12-30 Transfer device for automatic transfer switches

Country Status (1)

Country Link
KR (1) KR100360597B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100787905B1 (en) * 2006-03-21 2007-12-27 오성기전주식회사 Automatic Transfer Switch

Also Published As

Publication number Publication date
KR100360597B1 (en) 2002-11-18

Similar Documents

Publication Publication Date Title
CN100541697C (en) multipole circuit breaker
CN104201072B (en) A kind of reclosing device of breaker
JP2008270228A (en) Low-voltage circuit breaker
EP4089707B1 (en) 2p2m electromagnetic residual current circuit breaker with overcurrent protection
CN101814705B (en) A draw-in and out device for circuit breaker and breaker with the same
CN108281320A (en) No. 3 cutters and earthing switch for gas-insulated switchgear
CN110400711A (en) Electric switch
CN101211720B (en) Switch mechanism for air circuit breaker and its elbow connection rod
KR20010058529A (en) Pumping device for automatic transfer switches
KR200186075Y1 (en) Transfer device for automatic transfer switches
KR20160136057A (en) Power transfer switch
CN1146614A (en) Contactor/breaker type switch
KR100480386B1 (en) Ground switch for distributing board
KR200157360Y1 (en) Air circuit breaker
CN112701015A (en) Switch fault detection and restoration equipment
JPH1154000A (en) Switch juxtaposed with voltage regulator
KR101011683B1 (en) Transmitting apparatus for transferring power
KR200157361Y1 (en) Pumping device for air circuit breaker
KR200154762Y1 (en) Air circuit breaker
CN214672478U (en) Arc extinguishing device of circuit breaker
KR20210084627A (en) Movable contact mechanism of double breakpoint breaker
CN111223723A (en) Electronic miniature circuit breaker
CN221262264U (en) Miniature circuit breaker
KR100371377B1 (en) Spring charging mechanism of high-voltage equipment
CN215731540U (en) Intelligent residual current circuit breaker with electric reclosing mechanism

Legal Events

Date Code Title Description
A201 Request for examination
A302 Request for accelerated examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20061031

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee