EP2015334A2 - Druckluftschalter mit einfach anbringbarer Struktur für ein Überstromrelais - Google Patents

Druckluftschalter mit einfach anbringbarer Struktur für ein Überstromrelais Download PDF

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Publication number
EP2015334A2
EP2015334A2 EP08011612A EP08011612A EP2015334A2 EP 2015334 A2 EP2015334 A2 EP 2015334A2 EP 08011612 A EP08011612 A EP 08011612A EP 08011612 A EP08011612 A EP 08011612A EP 2015334 A2 EP2015334 A2 EP 2015334A2
Authority
EP
European Patent Office
Prior art keywords
over current
current relay
cover
circuit breaker
air circuit
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP08011612A
Other languages
English (en)
French (fr)
Other versions
EP2015334B1 (de
EP2015334A3 (de
Inventor
Seung-Pil Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LS Electric Co Ltd
Original Assignee
LS Industrial Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LS Industrial Systems Co Ltd filed Critical LS Industrial Systems Co Ltd
Publication of EP2015334A2 publication Critical patent/EP2015334A2/de
Publication of EP2015334A3 publication Critical patent/EP2015334A3/de
Application granted granted Critical
Publication of EP2015334B1 publication Critical patent/EP2015334B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/14—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch
    • H01H31/16—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member
    • H01H31/18—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member actuated through the movement of one or more insulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H2071/006—Provisions for user interfaces for electrical protection devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit

Definitions

  • the present invention relates to an air circuit breaker, more particularly, to an air circuit breaker having a simple detachable structure for an over current relay.
  • An over current relay is a part of an electronic device, serving as a controller for an air circuit breaker.
  • the over current relay serves to sense an abnormal current such as a short circuit current and an over current on a circuit and then generate an electric driving signal to a trip actuator triggering a switching mechanism so that the switching mechanism can be tripped in an air circuit breaker, to display an operation state of the air circuit breaker, and to communicate with an external monitoring device.
  • the over current relay is detached from the air circuit breaker when it is required to be replaced with a new one because its life is over, it is required to be checked due to an error generated while being operated, or it is required to be replaced with a multifunctional one.
  • the over current relay should be disassembled for an inspector's safety.
  • a front cover covering an almost entire front surface of the air circuit breaker should be detached from an air circuit breaker main body that is disposed at a rear side thereof. And, to this end, it is required to unscrew a plurality of connection screws, which causes inconvenience and wasting of time.
  • the present invention is directed to providing an air circuit breaker having a simple detachable structure for an over current relay.
  • an air circuit breaker comprising: a main body; a main cover that covers a front surface of the main body; a sub cover installed at one side of the main cover and assembled to the main cover so as to be disassembled therefrom by being pushed up; and an over current relay installed at a rear side of the sub cover so as to be disassembled therefrom and that serves as a controller of the air circuit breaker.
  • FIG. 1 is a perspective view obliquely showing an air circuit breaker from an upper side thereof in accordance with the present invention.
  • the air circuit breaker in accordance with the present invention includes a main body 100, a main cover 200 covering a front surface of the main body 100, a sub cover 300 installed at one side of the main cover, and an over current relay 400 installed at a rear side of the sub cover 300 so as to be disassemble therefrom and serving as a controller of the air circuit breaker.
  • the main body 100 of the air circuit breaker includes one switching mechanism (not shown) for providing a switching driving force, movable contactors and fixed contactors (not shown) for multiple phases, a common switching shaft (not shown) for transferring the switching driving force of the switching mechanism to the multiple movable contactors at the same time, an arc extinguishing mechanism for extinguishing an arc generated while executing an operation for breaking a circuit, namely, a tripping operation, or the like.
  • the main cover 200 covers the front surface of the air circuit breaker and approximately has a square shape.
  • the main cover 200 is formed of an electrically insulated resin.
  • the main cover 200 has a front surface provided with a manipulation button (reference numeral not given) for switching on or off the air circuit breaker, a charging handle (reference numeral not given) for manually charging a closing spring, or the like.
  • the main cover 200 is also called as a front surface manipulation portion.
  • the sub cover 300 is a member approximately having a rectangular shape, and is formed of an electrically insulated resin.
  • the sub cover 300 is provided with an opening portion 310 allowing a front surface of an over current relay 400 to be exposed so that a user can approach the front surface of the over current relay 400.
  • the sub cover 300 is installed at one side of the main cover 200, and assembled to the main cover 200 so as to be disassembled from the main cover 200 by being pushed up as shown in FIGS. 2 to 4 .
  • the sub cover 300 is provided with a hook portion 320 for preventing the sub cover 300 from being separated therefrom when it is assembled to the main cover 200.
  • the main cover 200 is provided with an insertion recess portion 220 corresponding to the hook portion 320 of the sub cover 300 so as to allow the hook portion 320 to be inserted thereinto.
  • the insertion recess portion 220 is implemented as a rectangular opening that is narrow and long in a length direction when being viewed from a front side. In the present invention, five insertion recess portions 220 are provided, preferably.
  • the hook portion 320 of the sub cover 300 is provided with an engaging recess portion 321.
  • the main cover 200 is provided with a protrusion 230 corresponding to the engaging recess portion 321 of the hook portion 320 thus to be engaged with the engaging recess portion 321.
  • the hook portion 320 of the sub cover 300 is provided with an inclined surface 311 for smoothly sliding and pushing up the sub cover 300
  • the main cover 200 is also provided with an inclined surface 210a-1 corresponding to the inclined surface 311 of the hook portion 320.
  • unexplained reference numeral 210a denotes an upper portion of the insertion recess portion 220 of the main cover 200
  • 210b denotes a lower portion of the insertion recess portion 220 of the main cover 200.
  • the air circuit breaker in accordance with the present invention further includes a supporting base 500 fixedly installed at the main body 100 so as to support the over current relay 400 to be disassembled.
  • the supporting base 500 is provided with a guide rail 510 for guiding the over current relay 400 when it is assembled to and disassembled from the air circuit breaker.
  • the over current relay 400 is provided with a guide shoe 410 corresponding to the guide rail 510.
  • the guide rail 510 and the guide shoe 410 are horizontally formed so that the over current relay 400 can be pushed into the supporting base 500 or drawn out therefrom in a horizontal direction.
  • the over current relay 400 is provided with fixing protrusions 420 at three positions, i.e., an upper portion and right and left side portions thereof.
  • the fixing protrusion 420 supports a position fixing screw S and is provided with a screw through hole (not shown) which the position fixing screw S can pass therethrough.
  • the supporting base 500 is provided with screw connection portions 520 forwardly extended from the upper portion and the right and left side portions thereof and provided with screw holes therein, as shown in FIGS. 6 to 9 .
  • the sub cover 300 is pushed up with being held in a user's hand.
  • it is required to push up the sub cover 300 by a force strong enough for the engaging recess portion 321 of the hook portion 320 to get over the protrusion 230 of the main cover 200.
  • the inclined surface 311 of the hook portion 320 and the inclined surface 210a-1 of the main cover 200 come into contact with each other and thus the sub cover 300 can be smoothly disassembled from the main cover 200, as shown in FIG. 3 .
  • a state that the hook portion 320 of the sub cover 300 is completely disassembled from the insertion recess portion 220 of the main cover 200 is shown in FIG. 4 .
  • Operation for assembling the sub cover 300 to the main cover 200 can be implemented by reversing the disassembling operation, with reversing the drawings from FIG. 4 to FIG. 2 through FIG. 3 .
  • the sub cover 300 is held in the user's hand and the hook portion 320 of the sub cover 300 is pushed into the insertion recess portion 220 of the main cover 200. And the, the sub cover 300 is drawn down.
  • the inclined surface 311 of the hook portion 320 and the inclined surface 210a-1 of the main cover 200 come into contact with each other and thus the hook portion 320 of the sub cover 300 can be smoothly inserted into the insertion recess portion 220 of the main cover 200.
  • the sub cover 300 can be assembled to the main cover 200, as shown in FIG. 2 .
  • the operation for disassembling the sub cover 300 from the main cover 200 should precede.
  • the sub cover 300 can be easily disassembled from the main cover 200 by only being pushed up.
  • the assembling operation may be executed at the time of replacing the over current relay 400 or returning the over current relay 400 to its original position after checking the over current relay 400.
  • the guide shoe 410 of the over current relay 400 to be assembled is fitted into the guide rail 510 of the supporting base 500.
  • the over current relay 400 is pushed into a receiving space in the supporting base 500 and the position fixing screws S are coupled through the fixing protrusions 420 of the over current relay 400 and the screw connection portions 520 of the supporting base 500, thus the over current relay 400 is fixed at the supporting base 500.
  • the disassembling operation may be executed at the time of replacing or checking the over current relay 400.
  • the disassembling operation is executed by reversing the assembling operation.
  • the position fixing screws S are unscrewed so as to release the over current relay 400 from the fixed state.
  • the over current relay 400 is drawn out from the receiving space in the supporting base 500 thus to terminate the disassembling operation.
  • the guide shoe 410 of the over current relay 400 is guided along the guide rail 510 of the supporting base 500 so that the over current relay 400 can be smoothly disassembled from the supporting base 500.
  • the air circuit breaker having the simple detachable structure for the over current relay in accordance with the present invention, when assembling or disassembling the over current relay, it is not required to detach the main cover of the air circuit breaker from the main body thereof that is positioned at the rear side of the main cover, accordingly it is capable of simply assembling or disassembling the over current relay.
  • the air circuit breaker having the simple detachable structure for the over current relay in accordance with the present invention is capable of assembling or disassembling the over current relay to or from the main cover by only pushing up or drawing down the sub cover, accordingly an operational productivity can be drastically enhanced when replacing or checking the over current relay.
  • the guide rail and the guide shoe are provided so as to guide the moving over current relay. Accordingly, it is capable of simply and rapidly executing the assembling and disassembling operations of the over current relay.

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EP08011612.2A 2007-07-12 2008-06-26 Luftschalter mit einfach anbringbarer Struktur für ein Überstromrelais Active EP2015334B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070070266A KR100881362B1 (ko) 2007-07-12 2007-07-12 기중차단기

Publications (3)

Publication Number Publication Date
EP2015334A2 true EP2015334A2 (de) 2009-01-14
EP2015334A3 EP2015334A3 (de) 2010-03-24
EP2015334B1 EP2015334B1 (de) 2015-08-05

Family

ID=39846943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08011612.2A Active EP2015334B1 (de) 2007-07-12 2008-06-26 Luftschalter mit einfach anbringbarer Struktur für ein Überstromrelais

Country Status (6)

Country Link
EP (1) EP2015334B1 (de)
KR (1) KR100881362B1 (de)
CN (1) CN101345164B (de)
ES (1) ES2551715T3 (de)
MY (1) MY160155A (de)
RU (1) RU2370846C1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3376520A4 (de) * 2015-11-10 2019-06-19 Zhejiang Chint Electrics Co., Ltd. Druckluftschalter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114975014B (zh) * 2022-05-27 2025-01-07 杭州申发电气有限公司 断开时不跳闸断路器的自动化控制系统及其方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0244629A (ja) 1988-08-01 1990-02-14 Fuji Electric Co Ltd 配線用遮断器
US5043688A (en) 1990-05-03 1991-08-27 General Electric Company Actuator-accessory interface unit for molded case circuit interrupter
US5581219A (en) 1991-10-24 1996-12-03 Fuji Electric Co., Ltd. Circuit breaker
US6480082B1 (en) 1996-12-25 2002-11-12 Hitachi, Ltd. Circuit breaker

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132324A (ja) * 1984-07-20 1986-02-15 富士電機株式会社 配線用遮断器の内部付属装置取付構造
KR100343132B1 (ko) * 1995-02-14 2002-11-23 삼성전자 주식회사 반도체장치의소자분리방법
DE20021499U1 (de) * 2000-12-20 2002-05-02 Moeller GmbH, 53115 Bonn Kipphebelbetätigtes elektrisches Schaltgerät mit frontseitigem Deckel
KR20030037019A (ko) * 2001-11-01 2003-05-12 현대중공업 주식회사 기중차단기의 통합 감시 제어 시스템
ITMI20012586A1 (it) * 2001-12-10 2003-06-10 Abb Service Srl Polo elettrico per un interruttore di potenza di bassa tensione, e relativo interruttore
KR20030072949A (ko) * 2002-03-07 2003-09-19 엘지전자 주식회사 공기 조화기용 송풍기
KR20040027164A (ko) * 2002-09-27 2004-04-01 엘지산전 주식회사 기중 차단기의 과전류 보호 계전기 및 그 제어방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0244629A (ja) 1988-08-01 1990-02-14 Fuji Electric Co Ltd 配線用遮断器
US5043688A (en) 1990-05-03 1991-08-27 General Electric Company Actuator-accessory interface unit for molded case circuit interrupter
US5581219A (en) 1991-10-24 1996-12-03 Fuji Electric Co., Ltd. Circuit breaker
US6480082B1 (en) 1996-12-25 2002-11-12 Hitachi, Ltd. Circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3376520A4 (de) * 2015-11-10 2019-06-19 Zhejiang Chint Electrics Co., Ltd. Druckluftschalter
RU2733885C2 (ru) * 2015-11-10 2020-10-07 Чжэцзян Чинт Электрикс Ко., Лтд. Воздушный выключатель

Also Published As

Publication number Publication date
CN101345164A (zh) 2009-01-14
KR100881362B1 (ko) 2009-02-02
EP2015334B1 (de) 2015-08-05
ES2551715T3 (es) 2015-11-23
KR20090006678A (ko) 2009-01-15
MY160155A (en) 2017-02-28
RU2370846C1 (ru) 2009-10-20
EP2015334A3 (de) 2010-03-24
CN101345164B (zh) 2012-01-18

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