KR101596389B1 - Gas Insulated Switchgear - Google Patents

Gas Insulated Switchgear Download PDF

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Publication number
KR101596389B1
KR101596389B1 KR1020150121065A KR20150121065A KR101596389B1 KR 101596389 B1 KR101596389 B1 KR 101596389B1 KR 1020150121065 A KR1020150121065 A KR 1020150121065A KR 20150121065 A KR20150121065 A KR 20150121065A KR 101596389 B1 KR101596389 B1 KR 101596389B1
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South Korea
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side feeder
portions
power cable
bay
feeder bay
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KR1020150121065A
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Korean (ko)
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남삼우
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선도전기주식회사
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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
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

The present invention relates to a gas insulated switchgear which includes a main bay, which receives power, an AF-side feeder bay (10) and a TF-side feeder bay (20), which are coupled with the main bay through a mother line portion (17,27) to be adjacent to each other in a symmetrical manner and supply power to a load, and a manipulator and control box (30) which is connected to the AF-side feeder bay (10) and the TF-side feeder bay (20). The AF-side feeder bay (10) and the TF-side feeder bay (20) are characterized in including: a mother line grounding unit (15,25) which is installed on the mother line portion (17,27) which is arranged at a bottom side thereof, and connects or disconnects a transmission line between the mother line portion (17,27) and a disconnecting portion (14,24); the disconnecting portion which is vertically installed on an upper side of the mother line grounding unit (15,25) and disconnects a fault current and a load current by connecting or disconnecting the transmission line; a power cable grounding unit (12,22) which is installed inside the disconnecting portion (14,24) and connects or disconnects the transmission line; and a power cable connecting unit (11,21) which is vertically installed at a lower side of the power cable grounding unit (12,22), and outputs or receives power to or from the outside. According to the present invention, spatial efficiency is improved by symmetrically arranging the AF-side feeder bay (10) and the TF-side feeder bay (20).

Description

가스절연 개폐장치{Gas Insulated Switchgear}[0001] The present invention relates to a gas insulated switchgear,

본 발명은 가스절연 개폐장치(Gas Insulated Switchgear; GIS)에 관한 것이다.The present invention relates to a gas insulated switchgear (GIS).

최근 산업이 발달함에 따라 전력소비가 증가하게 되었으며, 대도시 또는 특정의 좁은 지역에 대용량의 전력소비가 요구되고 있다. 이를 수용할 설치 공간의 부족으로 소형화한 대용량 전력기기인 가스절연기기가 필요로 하게 되었다.Recent developments in the industry have led to an increase in power consumption, and a large amount of power consumption is required in large cities or in certain small areas. The lack of installation space to accommodate this necessitates gas insulated appliances that are miniaturized large-capacity power devices.

가스 절연기기라고 하면 주로 SF6가스를 절연 매체로 한 기기를 말한다. 최근 가스절연기기로서 가스절연 개폐장치가 많이 사용되어지고 있다.Gas insulation equipment refers to equipment mainly using SF6 gas as insulation medium. Recently, gas insulated switchgears have been widely used as gas insulated appliances.

가스절연 개폐장치는 불활성 가스인 SF6의 우수한 물리적인 전기적 성질을 응용하여 정상상태의 전류계폐뿐 아니라 단락사고 등 이상상태에 있어서도 안전하게 운전 개폐하여 계통을 보호하는 복합 기계 장치로서 사용되고 있다.The gas insulated switchgear is used as a complex mechanical device that protects the system by safely opening and closing the system not only in the normal state of the ammeter lung but also in the abnormal state such as a short circuit accident by applying the excellent physical electric property of SF6 which is an inert gas.

한편, 이와 같은 가스절연 개폐장치를 구성할 때 전체적인 공간의 효율성을 고려할 필요가 있다.On the other hand, when constructing such a gas insulated switchgear, it is necessary to consider the overall space efficiency.

이와 관련된 선행기술문헌 정보: 등록특허 제10-1271146호(공고일자 2013년06월05일) "기체절연 개폐장치"Related Prior Art Document Information: Registered Patent No. 10-1271146 (Publication Date June 05, 2013) "Gas Insulated Switchgear"

본 발명은 전술한 과제를 해결하기 위하여 안출한 것으로, AF측 피더베이 및 TF측 피더베이가 이웃하여 대칭으로 구성된 가스절연 개폐장치를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a gas insulated switchgear device in which the AF side feeder bays and the TF side feeder bays are arranged adjacent to each other in a symmetrical manner.

이와 같은 목적을 달성하기 위하여,In order to achieve this object,

본 발명의 일 형태에 따르면,According to an aspect of the present invention,

전력을 수전하는 메인베이와 모선부(17, 27) 통해 연결되고 부하에 전력을 공급하며 이웃하여 대칭으로 구성된 AF측 피더베이(10) 및 TF측 피더베이(20)와, 상기 AF측 피더베이(10) 및 TF측 피더베이(20)에 연결된 조작기 및 콘트롤 박스(30)로 이루어지는 가스절연 개폐장치로서,An AF side feeder bay 10 and a TF side feeder bay 20 which are connected to each other through a bus bar 17 and 27 and supply electric power to the main bay and are symmetrically arranged adjacent to each other, (10) and a TF side feeder bay (20), and a control box (30)

상기 AF측 피더베이(10) 및 TF측 피더베이(20)는,The AF side feeder bay 10 and the TF side feeder bay 20,

하단에 위치된 모선부(17, 27) 상측에 설치되어 상기 모선부(17, 27)와 차단부(14, 24) 사이의 선로를 통전 또는 단로시키는 모선부 접지단로부(15, 25);25 which are provided on the lower ends of the bus bars 17 and 27 to energize or cut off the line between the bus bars 17 and 27 and the blocking portions 14 and 24, ;

상기 모선부 접지단로부(15, 25) 상측에 수직하게 설치되어 선로를 통전 또는 차단해서 사고전류 및 부하전류를 차단하는 차단부(14, 24);Blocking portions (14, 24) vertically installed above the bus-bar grounded ends (15, 25) to cut off the fault current and load current by energizing or breaking the line;

상기 차단부(14, 24)의 내측에 설치되어 선로를 통전 또는 단로시키는 전력케이블 접지단로부(12, 22); 및A power cable grounding end portion 12, 22 provided inside the blocking portions 14, 24 for energizing or disconnecting the line; And

상기 전력케이블 접지단로부(12, 22)의 하측에 수직하게 설치되어 외부에 대해 전력을 인입 또는 인출하는 전력케이블 접속부(11, 21);Power cable connecting portions (11, 21) vertically installed below the power cable grounding end portions (12, 22) for introducing or extracting electric power to the outside;

를 포함하는 것을 특징으로 한다.And a control unit.

상기 차단부(14, 24)의 상측에 설치되어 특고압을 저압으로 낮추어 계기용으로 사용하도록 하는 계기용 변압기(16, 26);A meter transformer (16, 26) installed on the upper side of the cut-off portion (14, 24) for lowering the high-pressure to a low pressure for use as a meter;

상기 계기용 변압기(16, 26) 내측에 이웃하게 설치되어 낙뢰충격 및 개폐 써지전압을 대지로 방전하는 피뢰기(18, 28); 및A lightning arrester (18, 28) disposed adjacent to the inside of the instrument transformer (16, 26) for discharging a lightning shock and an opening / closing surge voltage to the ground; And

상기 전력케이블 접속부(11, 21)의 탱크(13, 23) 외측에 설치되어 대전류를 저전류로 변성하여 계기용으로 사용하도록 하는 계기용 변류기(51, 52);Instrumentation current transformers (51, 52) provided outside the tanks (13, 23) of the power cable connecting portions (11, 21) for transforming a large current into a low current for use as an instrument;

를 더 포함하는 것을 특징으로 한다.And further comprising:

상기 전력케이블 접속부(11, 21), 전력케이블 접지단로부(12, 22), 모선부 접지단로부(15, 25) 및 차단부(14, 24)는 대지에 대해 절연하는 절연 스페이서(31, 32, 33, 41, 42, 43)에 의해 구분되는 것을 특징으로 한다.The power cable connecting portions 11 and 21, the power cable grounding end portions 12 and 22, the bus bar grounding end lead portions 15 and 25 and the blocking portions 14 and 24 are insulating spacers 31, 32, 33, 41, 42, 43).

상기 조작기 및 콘트롤 박스(30)는 상기 전력케이블 접지단로부(12, 22), 모선부 접지단로부(15, 25) 및 차단부(14, 24)의 동작을 조작하는 것을 특징으로 한다.The manipulator and control box 30 are characterized by operating the operation of the power cable grounding end portions 12 and 22, the base end grounding end portions 15 and 25 and the blocking portions 14 and 24 .

본 발명은, AF측 피더베이(10) 및 TF측 피더베이(20)가 이웃하여 대칭으로 구성됨에 따라 전체적인 공간의 효율성이 높아지고 이에 따라 설치 작업효율성이 높아지는 효과가 있다.In the present invention, since the AF side feeder bay 10 and the TF side feeder bay 20 are arranged symmetrically adjacent to each other, the efficiency of the whole space is increased and the installation efficiency is improved accordingly.

도 1은 본 발명에 따라 조작기 및 콘트롤 박스와, 대칭으로 구성된 AF측 피더베이 및 TF측 피더베이로 이루어지는 가스절연 개폐장치의 일 실시 예를 나타낸 도면이다.
도 2는 도 1에 도시된 AF측 피더베이 및 TF측 피더베이의 단선도를 하나로 나타낸 도면이다.1 is a view showing an embodiment of a gas-insulated switchgear comprising an actuator and a control box, and a symmetrically configured AF side feeder bay and a TF side feeder bay according to the present invention.
Fig. 2 is a view showing a single line diagram of the AF side feeder bays and the TF side feeder bays shown in Fig. 1. Fig.

이하, 첨부된 도면을 참조하여 본 발명에 따른 실시 예를 상세히 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따라 조작기 및 콘트롤 박스(30)와, 대칭으로 구성된 AF측 피더베이(10) 및 TF측 피더베이(20)로 이루어지는 가스절연 개폐장치의 일 실시 예를 나타낸 도면으로, AF측 피더베이(10), 전력케이블 접속부(11, 21), 전력케이블 접지단로부(12, 22), 탱크(13, 23), 차단부(14, 24), 모선부 접지단로부(15, 25), 계기용 변압기(16, 26), 모선부(17, 27), 피뢰기(18, 28), TF측 피더베이(20), 조작기 및 콘트롤 박스(30), 절연 스페이서(31, 32, 33, 41, 42, 43) 및 계기용 변류기(51, 52)로 구성된다.1 is a view showing an embodiment of a gas insulated switchgear comprising an operation device and a control box 30, a symmetrically configured AF side feeder bay 10 and a TF side feeder bay 20 according to the present invention, The power cable connecting portions 11 and 21, the power cable grounding end portions 12 and 22, the tanks 13 and 23, the blocking portions 14 and 24, 15, 25, the transformers 16, 26, the bus bars 17, 27, the lightning arresters 18, 28, the TF side feeder bay 20, the manipulator and control box 30, 32, 33, 41, 42, 43, and instrumental current transformers 51, 52.

이와 같은 본 발명을 도 2를 참조하여 상세히 보면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to FIG.

도 2는 도 1에 도시된 AF측 피더베이(10) 및 TF측 피더베이(20)의 단선도를 하나로 나타낸 도면이다.Fig. 2 is a view showing a single line diagram of the AF-side feeder bay 10 and the TF-side feeder bay 20 shown in Fig.

도 1 및 도 2에 있어서, 먼저 가스절연 개폐장치는 AF측 피더베이(10), TF측 피더베이(20) 및 조작기 및 콘트롤 박스(30)로 이루어진다. 이때 조작기 및 콘트롤 박스(30)는 AF측 피더베이(10) 및 TF측 피더베이(20)에 연결된다.1 and 2, the gas insulated switchgear includes an AF side feeder bay 10, a TF side feeder bay 20, an actuator, and a control box 30. At this time, the manipulator and the control box 30 are connected to the AF side feeder bay 10 and the TF side feeder bay 20.

이와 같은 AF측 피더베이(10) 및 TF측 피더베이(20)는 전력을 수전하는 메인베이와 모선부(17, 27) 통해 연결되고 부하에 전력을 공급하며 이웃하여 대칭으로 구성된다.The AF side feeder bay 10 and the TF side feeder bay 20 are connected to each other via the main buses 17 and 27 for receiving electric power and are symmetrically arranged adjacent to each other while supplying power to the load.

즉, AF측 피더베이(10) 및 TF측 피더베이(20)에 구성된 모선부 접지단로부(15, 25)는 하단에 위치된 모선부(17, 27) 상측에 설치되어 모선부(17, 27)와 차단부(14, 24) 사이의 선로를 통전 또는 단로시킨다.That is, the bus bar grounding end passage portions 15 and 25 provided in the AF side feeder bay 10 and the TF side feeder bay 20 are provided on the lower side of the bus bar portions 17 and 27, 27 and the blocking portions 14, 24, respectively.

차단부(14, 24)는 모선부 접지단로부(15, 25) 상측에 수직하게 설치되어 선로를 통전 또는 차단해서 사고전류 및 부하전류를 차단한다.The blocking portions 14 and 24 are vertically provided above the bus bar grounded ends 15 and 25 to block or interrupt the fault current and the load current.

전력케이블 접지단로부(12, 22)는 차단부(14, 24)의 내측에 설치되어 선로를 통전 또는 단로시킨다.The power cable grounding end sections 12 and 22 are provided inside the shielding sections 14 and 24 to energize or disconnect the line.

전력케이블 접속부(11, 21)는 전력케이블 접지단로부(12, 22)의 하측에 수직하게 설치되어 외부에 대해 전력을 인입 또는 인출한다.The power cable connecting portions 11 and 21 are vertically installed on the lower side of the power cable grounding end portions 12 and 22 to draw or draw power to the outside.

계기용 변압기(16, 26)는 차단부(14, 24)의 상측에 설치되어 특고압을 저압으로 낮추어 계기용으로 사용하도록 한다.The meter transformers 16 and 26 are installed on the upper side of the cut-off portions 14 and 24 so that the high-pressure is lowered to a low pressure and used as a meter.

피뢰기(18, 28)는 계기용 변압기(16, 26) 내측에 이웃하게 설치되어 낙뢰충격 및 개폐 써지전압을 대지로 방전한다.The lightning arresters 18 and 28 are disposed adjacent to the inside of the instrument transformers 16 and 26 to discharge the lightning shock and the open / close surge voltage to the ground.

계기용 변류기(51, 52)는 전력케이블 접속부(11, 21)의 탱크(13, 23) 외측에 설치되어 대전류를 저전류로 변성하여 계기용으로 사용하도록 한다.The instrumental current transformers 51 and 52 are provided outside the tanks 13 and 23 of the power cable connecting portions 11 and 21 so as to transform the large current into a low current to be used for the instrument.

한편, 전력케이블 접속부(11, 21), 전력케이블 접지단로부(12, 22), 모선부 접지단로부(15, 25) 및 차단부(14, 24)는 대지에 대해 절연하는 절연 스페이서(31, 32, 33, 41, 42, 43)에 의해 구분된다.On the other hand, the power cable connecting portions 11 and 21, the power cable grounding end portions 12 and 22, the bus lead portions 15 and 25, and the blocking portions 14 and 24 are insulated spacers (31, 32, 33, 41, 42, 43).

조작기 및 콘트롤 박스(30)는 전력케이블 접지단로부(12, 22), 모선부 접지단로부(15, 25) 및 차단부(14, 24)의 동작을 조작한다.The manipulator and control box 30 manipulates the operation of the power cable grounding end portions 12 and 22, the bus bar grounding end portions 15 and 25 and the blocking portions 14 and 24.

이와 같은 본 발명은 AF측 피더베이(10) 및 TF측 피더베이(20)가 이웃하여 대칭으로 구성됨에 따라 전체적인 공간의 효율성이 높아지고 이에 따라 설치 작업효율성이 높아지는 장점이 있다.Since the AF side feeder bay 10 and the TF side feeder bay 20 are symmetrically arranged in the neighborhood of the AF side feeder bay 10, the efficiency of the overall space is increased and the installation efficiency is improved.

특히 모선부(17, 27)를 하단에 위치시킴에 따라 모선부(17, 27)를 조립하기 위한 공간이 충분히 확보되고 모선부(17, 27)에 메인베이를 연결하기가 편리하다.It is convenient to secure a space for assembling the bus bars 17 and 27 and to connect the main bays to the bus bars 17 and 27 by locating the bus bars 17 and 27 at the lower end.

전력케이블 접속부(11, 21)를 차단부(14, 24) 내측에 높이를 낮추어 배치함에 따라 전력케이블 접속부(11, 21)에 전력케이블을 접속하기가 편리하다.It is convenient to connect the power cable connection portions 11 and 21 to the power cable connection portions 11 and 21 by disposing the power cable connection portions 11 and 21 inside the blocking portions 14 and 24 at a reduced height.

전력케이블 접지단로부(12, 22)와 모선부 접지단로부(15, 25)를 이용하여 차단부(14, 24)를 용이하게 시험할 수 있다.It is possible to easily test the blocking portions 14 and 24 by using the power cable grounding end portions 12 and 22 and the base end grounding end portions 15 and 25. [

이상에서 본 발명에 대한 기술사상을 첨부도면과 함께 서술하였지만 이는 본 발명의 바람직한 실시 예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다. 또한, 이 기술분야의 통상의 지식을 가진 자라면 누구나 본 발명의 기술사상의 범주를 이탈하지 않는 범위 내에서 다양한 변형 및 모방이 가능함은 명백한 사실이다.Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

10: AF측 피더베이
11, 21: 전력케이블 접속부
12, 22: 전력케이블 접지단로부
13, 23: 탱크
14, 24: 차단부
15, 25: 모선부 접지단로부
16, 26: 계기용 변압기
17, 27: 모선부
18, 28: 피뢰기
20: TF측 피더베이
30: 조작기 및 콘트롤 박스
31, 32, 33, 41, 42, 43: 절연 스페이서
51, 52: 계기용 변류기10: AF side feeder bay
11, 21: Power cable connection
12, 22: Power cable grounding end part
13, 23: tank
14, 24:
15, 25: Bus terminal grounding end part
16, 26: Instrument transformer
17, 27:
18, 28: Arrester
20: TF side feeder bay
30: Actuator and control box
31, 32, 33, 41, 42, 43: insulated spacers
51, 52: Current transformer

Claims (4)

전력을 수전하는 메인베이와 모선부(17, 27) 통해 연결되고 부하에 전력을 공급하며 이웃하여 대칭으로 구성된 AF측 피더베이(10) 및 TF측 피더베이(20)와, 상기 AF측 피더베이(10) 및 TF측 피더베이(20)에 연결된 조작기 및 콘트롤 박스(30)로 이루어지는 가스절연 개폐장치로서,
상기 AF측 피더베이(10) 및 TF측 피더베이(20)는,
하단에 위치된 모선부(17, 27) 상측에 설치되어 상기 모선부(17, 27)와 차단부(14, 24) 사이의 선로를 통전 또는 단로시키는 모선부 접지단로부(15, 25);
상기 모선부 접지단로부(15, 25) 상측에 수직하게 설치되어 선로를 통전 또는 차단해서 사고전류 및 부하전류를 차단하는 차단부(14, 24);
상기 차단부(14, 24)의 내측에 설치되어 선로를 통전 또는 단로시키는 전력케이블 접지단로부(12, 22); 및
상기 전력케이블 접지단로부(12, 22)의 하측에 수직하게 설치되어 외부에 대해 전력을 인입 또는 인출하는 전력케이블 접속부(11, 21);
를 포함하되,

상기 차단부(14, 24)의 상측에 설치되어 특고압을 저압으로 낮추어 계기용으로 사용하도록 하는 계기용 변압기(16, 26);
상기 계기용 변압기(16, 26) 내측에 이웃하게 설치되어 낙뢰충격 및 개폐 써지전압을 대지로 방전하는 피뢰기(18, 28); 및
상기 전력케이블 접속부(11, 21)의 탱크(13, 23) 외측에 설치되어 대전류를 저전류로 변성하여 계기용으로 사용하도록 하는 계기용 변류기(51, 52);
를 더 포함하며,

상기 전력케이블 접속부(11, 21), 전력케이블 접지단로부(12, 22), 모선부 접지단로부(15, 25) 및 차단부(14, 24)는 대지에 대해 절연하는 절연 스페이서(31, 32, 33, 41, 42, 43)에 의해 구분되며,

상기 조작기 및 콘트롤 박스(30)는 상기 전력케이블 접지단로부(12, 22), 모선부 접지단로부(15, 25) 및 차단부(14, 24)의 동작을 조작하는 것을 특징으로 하는 가스절연 개폐장치.An AF side feeder bay 10 and a TF side feeder bay 20 which are connected to each other through a bus bar 17 and 27 and supply electric power to the main bay and are symmetrically arranged adjacent to each other, (10) and a TF side feeder bay (20), and a control box (30)
The AF side feeder bay 10 and the TF side feeder bay 20,
25 which are provided on the lower ends of the bus bars 17 and 27 to energize or cut off the line between the bus bars 17 and 27 and the blocking portions 14 and 24, ;
Blocking portions (14, 24) vertically installed above the bus-bar grounded ends (15, 25) to cut off the fault current and load current by energizing or breaking the line;
A power cable grounding end portion 12, 22 provided inside the blocking portions 14, 24 for energizing or disconnecting the line; And
Power cable connecting portions (11, 21) vertically installed below the power cable grounding end portions (12, 22) for introducing or extracting electric power to the outside;
, ≪ / RTI &

A meter transformer (16, 26) installed on the upper side of the cut-off portion (14, 24) for lowering the high-pressure to a low pressure for use as a meter;
A lightning arrester (18, 28) disposed adjacent to the inside of the instrument transformer (16, 26) for discharging a lightning shock and an opening / closing surge voltage to the ground; And
Instrumentation current transformers (51, 52) provided outside the tanks (13, 23) of the power cable connecting portions (11, 21) for transforming a large current into a low current for use as an instrument;
Further comprising:

The power cable connecting portions 11 and 21, the power cable grounding end portions 12 and 22, the bus bar grounding end lead portions 15 and 25 and the blocking portions 14 and 24 are insulating spacers 31, 32, 33, 41, 42, 43,

Characterized in that the manipulator and the control box (30) operate the operation of the power cable grounding end portions (12,22), the base end grounding end ledge portions (15,25) and the blocking portions (14,24) Gas insulated switchgear. 삭제delete 삭제delete 삭제delete
KR1020150121065A 2015-08-27 2015-08-27 Gas Insulated Switchgear KR101596389B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200495159Y1 (en) 2021-10-28 2022-03-18 주식회사 디투엔지니어링 Gas-insulated switch gear having an automatic fire extinguishing function in an extry-exit casing part

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101546791B1 (en) * 2015-04-03 2015-08-24 제룡전기 주식회사 Gas insulated switchgear
KR101546647B1 (en) * 2015-03-30 2015-08-25 (주)서전기전 Phase separable compact type 29kv gas insulated switchgear

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101546647B1 (en) * 2015-03-30 2015-08-25 (주)서전기전 Phase separable compact type 29kv gas insulated switchgear
KR101546791B1 (en) * 2015-04-03 2015-08-24 제룡전기 주식회사 Gas insulated switchgear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200495159Y1 (en) 2021-10-28 2022-03-18 주식회사 디투엔지니어링 Gas-insulated switch gear having an automatic fire extinguishing function in an extry-exit casing part

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