KR20020007536A - Lighting panel board having a explosion and flame proof - Google Patents

Lighting panel board having a explosion and flame proof Download PDF

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Publication number
KR20020007536A
KR20020007536A KR1020000040779A KR20000040779A KR20020007536A KR 20020007536 A KR20020007536 A KR 20020007536A KR 1020000040779 A KR1020000040779 A KR 1020000040779A KR 20000040779 A KR20000040779 A KR 20000040779A KR 20020007536 A KR20020007536 A KR 20020007536A
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KR
South Korea
Prior art keywords
explosion
rotary knob
proof structure
distribution panel
contact portion
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KR1020000040779A
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Korean (ko)
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KR100341999B1 (en
Inventor
최승진
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최승진
현대방폭전기(주)
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Priority to KR1020000040779A priority Critical patent/KR100341999B1/en
Publication of KR20020007536A publication Critical patent/KR20020007536A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • 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
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)
  • Distribution Board (AREA)

Abstract

PURPOSE: A cabinet panel board having an explosion proof structure is provided to continuously maintain a main rotary knob or a sub rotary knob in an on/off status, and ensure an explosion proof structure resistible against the outside air. CONSTITUTION: A switching rotary shaft(26) is positioned on a rear surface of a holding part(23) to be connected with a rotary shaft of a main contact part inside a case through a coupling hole(25). Insertion recesses(27a,27b) are formed at the same line on the outside of the coupling hole(25). A metal ball(28) and a coil spring(29) are formed on the insertion recesses(27a,27b) to be contacted with an outer circumference of the switching rotary shaft(26). A locking unit forms through holes(30a,30b) at predetermined positions of an outer circumference of a rotary knob contacted with an inner circumference of the cylindrical case. As the holding part(23) rotates, coupling recesses(31a,31b) are formed on an outer circumference(24) of the cylindrical case in a manner that positions of the coupling recesses are coincided with those of the through holes(30a,30b) to form a path.

Description

방폭 구조를 갖는 분전반{Lighting panel board having a explosion and flame proof}Lighting panel board having a explosion and flame proof}

본 발명은 분전반에 관한 것으로서, 특히, 방폭의 특성인 밀봉성과 밀폐성이 유지되며, 안정적인 온/오프 상태를 유지하는 분전반에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution panel, and more particularly, to a distribution panel which maintains a stable on / off state and maintains sealing and sealing properties, which are characteristics of explosion-proof.

통상적으로 정유 공장이나 가스 정제 공장 및 인화성 물질을 취급하는 공장에는 항시 폭발 및 화재의 위험성이 상존한다.There is always a risk of explosions and fires in oil refineries, gas refineries and plants handling flammable materials.

따라서, 이러한 위험지역은 국제적인 협약, 가령 NEC(National Electric Code) 또는 IEC(International Electro-technical Committee),에서 위험 상태에 따라 위험장소를 구분하여 분류하고 있다.Therefore, these hazardous areas are classified according to their risk status in international conventions such as the National Electric Code (NEC) or the International Electro-technical Committee (IEC).

이러한 분류의 대표적인 것으로 위험장소를 대략 세 가지 장소로 구분하게 되는데, 위험 분위기가 보통상태에서 계속해서 발생하거나 또는 발생할 염려가 있는 장소를 0 종 장소, 보통장소에서 위험분위기가 발생할 우려가 있는 장소를 1 종 장소, 이상상태에서 위험 분위기가 단시간 존재 할 수 있는 장소를 2 종 장소로 각각 구분된다.As a representative example of this classification, the dangerous place is divided into three places.The place where the dangerous atmosphere is continuously generated or is likely to occur in the normal state is identified as the 0 species and the place where the dangerous atmosphere may occur in the normal place. There are two kinds of places, one place and a place where dangerous atmosphere can exist for a short time under abnormal conditions.

이 위험 지역 가운데 0 종 장소 및 1 종 장소에는 항시 폭발 및 화재의 위험성이 상존하므로 이 지역에서 사용되는 전기기구( 전원 케이블, 스위치 및 스위치 박스, 코넥터 등)는 스파크가 발생되거나 불안전한 전원 연결이 발생되면 이는 곧 폭발 및 화재 발생의 원인이 되므로, 전기기구는 각별히 폭발 및 화재의 위험에 노출되지 않도록 하는 수단이 요구된다.There are always risks of explosions and fires in the 0 and 1 of these hazardous areas, so electrical appliances (power cables, switches and switch boxes, connectors, etc.) used in these areas may have sparked or unsafe power connections. If this occurs, it will cause an explosion and fire, and electric appliances require a means to prevent them from being particularly exposed to explosion and fire.

따라서, 위험 지역에 사용되는 전기기구는 대개 방폭된 구조를 가지도록 규정되어 있다.Therefore, electrical appliances used in hazardous areas are usually defined to have an explosion-proof structure.

특히, 각종 조명기구 또는 작동장치에 전원을 인가하기 위해 사용되는 분전반의 경우, 도 1 에 도시된 바와 같이, 케이스(1)와 전면패널(2)가 결합되어 구성되며 전면패널(2)의 전면으로 메인 회전노브(3)와 다수개의 서브 회전노브(4)가 형성되어 있고, 케이스(1)내부에는 메인 회전노브(3)와 서브 회전노브(4)의 작동에 따라 온/오프 작동되어 외부의 전기기구에 전원을 공급하는 미도시된 접점부가 형성된다.In particular, in the case of the distribution panel used to apply power to various lighting fixtures or operating devices, as shown in Figure 1, the case 1 and the front panel 2 is configured to be combined and the front of the front panel 2 The main rotary knob (3) and a plurality of sub rotary knob (4) is formed, the case (1) inside the on / off operation in accordance with the operation of the main rotary knob 3 and the sub rotary knob (4) A non-illustrated contact portion for supplying power to the electrical appliance is formed.

여기서, 메인 회전노브(3)와 서브 회전노브(4)는 소정의 각도로 회전하면서 온/오프 작동 제어되고, 미도시된 메인 접접부와 서브 접점부는 회전노브의 회전에 따라 접점이 온/오프 되어 전원을 공급하는 것이다.Here, the main rotary knob 3 and the sub rotary knob 4 is turned on / off operation control while rotating at a predetermined angle, the main contact portion and the sub contact portion (not shown) is turned on / off according to the rotation of the rotary knob To supply power.

이러한 구성으로 이루어진 종래의 방폭 구조를 갖는 분전반은 위험지역 내부에 각종 전기기구에 전원을 인가하여 작동시키기 위해 오프 상태의 메인 회전노브(3)를 온 상태로 전환시키면 메인 접점부가 온 작동되고, 전원을 인가하고자 하는 특정 전기기구에 연결된 서브 회전노브(4)를 온 상태로 전환시키면 서브 접점부가 온 작동된다.In the distribution panel having a conventional explosion-proof structure having such a configuration, when the main rotary knob 3 in the off state is turned on in order to apply power to various electric appliances inside the hazardous area, the main contact part is turned on and operated. When the sub-rotation knob 4 connected to the specific electric appliance to which is applied is turned on, the sub contact part is turned on.

그러나, 이러한 종래의 분전반은 대개 하나의 메인 회전노브와 다수개의 서브 회전노브로 이루어져 있어 작업자의 조작실수에 의해 작동중인 각각의 접점부들이 온/오프 전환되면 큰 사고를 유발시킬 소지가 많다.However, such a distribution panel is usually composed of one main rotary knob and a plurality of sub-rotary knobs, which are likely to cause a big accident if each of the contact points in operation are switched on / off by an operator's mistake.

즉, 위험지역 내에서 작업을 진행하고 있는 과정에서 온 상태를 지속적으로 유지하여야 하는 메인 회전노브 또는 서브 회전노브가 다른 작업자에 의해 오프되는 경우, 위험 지역 내의 작업자는 폭발, 가스 중독 등의 위험 요소에 그대로 노출되는 문제점이 있다.In other words, if the main rotary knob or sub rotary knob is turned off by another operator while the work is being carried out in the dangerous zone, the worker in the hazardous zone is subject to risks such as explosion and gas poisoning. There is a problem that is exposed as it is.

반대로 오프 상태를 지속적으로 유지하여야 하는 메인 회전노브 또는 서브 회전노브가 다른 작업자에 의해 온 되는 경우에도 마찬가지이다.On the contrary, the same applies when the main rotary knob or the sub rotary knob is to be turned on by another operator.

또한, 종래의 분전반은 케이스와 전면패널의 결합부위를 밀봉 처리시켜 하우징 내부가 방폭되도록 하고 있으나, 이러한 방폭 구조에 의해 안전한 방폭이 불가능한 문제점이 있어왔다.In addition, the conventional distribution panel seals the coupling portion between the case and the front panel to prevent the interior of the housing from explosion-proof, but there has been a problem in that the explosion-proof structure prevents the safety of the explosion-proof.

이에 본 발명은 메인 회전노브 또는 서브 회전노브가 온/오프 상태에서 계속적으로 유지시킬 수 있으며, 외기로부터 안전한 방폭 구조를 가지는 분전반을 제공하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide a distribution panel having a main rotary knob or a sub rotary knob continuously maintained in an on / off state and having an explosion-proof structure that is safe from outside air.

따라서, 본 발명에 따른 방폭 구조를 갖는 분전반은 상기 목적을 달성하기 위해, 전면패널에 부착된 회전노브와 케이스 내부에 부착되어 회전노브의 회전에 따라 온/오프 동작되는 접점부로 이루어진 방폭 스위치가 다수개 구비된 방폭 구조를 갖는 분전반에 있어서, 방폭 스위치에 온/오프 동작 상태를 유지시키는 록킹수단이 구비된 것을 특징으로 한다.Therefore, the distribution panel having an explosion-proof structure according to the present invention has a plurality of explosion-proof switches consisting of a rotary knob attached to the front panel and a contact portion attached to the inside of the case to operate on / off according to the rotation of the rotary knob. In the distribution board having an explosion-proof structure provided, it characterized in that the explosion-proof switch is provided with locking means for maintaining the on / off operation state.

또한, 본 발명에 따른 방폭 구조를 갖는 분전반은 접점부를 각각의 유닛 단위로 밀봉된 것을 특징으로 한다.In addition, the distribution panel having an explosion-proof structure according to the invention is characterized in that the contact portion is sealed in each unit unit.

도 1 은 종래의 방폭 구조를 갖는 분전반을 설명하기 위한 사시도.1 is a perspective view for explaining a distribution panel having a conventional explosion-proof structure.

도 2 은 본 발명에 따른 방폭구조를 갖는 분전반을 설명하기 위한 사시도.Figure 2 is a perspective view for explaining a distribution panel having an explosion-proof structure according to the present invention.

도 3 는 본 발명에 따른 방폭구조를 갖는 분전반의 전면패널을 제거한 상태의 평면도.3 is a plan view of the front panel of the distribution panel having a explosion-proof structure in accordance with the present invention removed.

도 4 는 본 발명에 따른 방폭 구조를 갖는 분전반에서 회전 스위치의 분해 사시도.Figure 4 is an exploded perspective view of the rotary switch in the distribution panel having an explosion-proof structure according to the present invention.

도 5 은 본 발명에 따른 방폭 구조를 갖는 분전반에서 회전 스위치의 사용상태도.5 is a state of use of the rotary switch in the distribution panel having an explosion-proof structure according to the present invention.

※ 도면의 주요부분에 대한 부호의 설명 ※※ Explanation of code about main part of drawing ※

1,10 : 케이스 2,11 : 전면패널1,10: Case 2,11: Front panel

3,12 : 메인 스위치 4,13 : 서브 스위치3,12 main switch 4,13 sub switch

14 : 메인 접점부 15 : 서브 접점부14: main contact portion 15: sub contact portion

16,17 : 회전축 18 : 잠금부재16, 17: rotating shaft 18: locking member

20 : 후면판 21 : 원통 케이스20: rear panel 21: cylindrical case

23 : 회전노브 25 : 결합공23: rotary knob 25: coupling hole

26 : 스위칭 회전축 27 : 삽입홈26: switching shaft 27: insertion groove

28 : 금속볼 29 : 코일 스프링28: metal ball 29: coil spring

30 : 관통공 31 : 결합홈30: through hole 31: coupling groove

이하, 첨부된 도면을 참조하여 본 발명에 따른 방폭 구조를 갖는 분전반의 바람직한 일실시예를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the distribution panel having an explosion-proof structure according to the present invention.

본 발명에 따른 방폭 구조를 갖는 분전반은 케이스(10)와 케이스를 덮어 내부가 밀봉되게 하는 전면패널(11)이 결합되고, 온 또는 오프 상태를 유지시킬 수 있는 록킹 수단이 구비된 메인 및 서브 스위치가 부착된다.The distribution panel having the explosion-proof structure according to the present invention is the main panel and the sub-switch having a locking means capable of maintaining the on or off state is coupled to the case 10 and the front panel 11 to cover the case and sealed inside Is attached.

메인 및 서브 스위치는 전면패널(11)전면에 부착된 메인 회전노브(12)및 다수개의 서브 회전노브(13)와, 메인 회전노브 및 다수개의 서브 회전노브와 상호 일대일 대응되어 회전노브의 회전에 따라 접점들이 온/오프되도록 케이스(10)내부에 부착된 메인 접점부(14) 및 다수개의 서브 접점부(15)가 부착된다.The main and sub switches correspond to the main rotary knob 12 and the plurality of sub rotary knobs 13 attached to the front of the front panel 11, and the main rotary knob and the plurality of sub rotary knobs one-to-one to each other to prevent rotation of the rotary knob. Accordingly, the main contact portion 14 and the plurality of sub contact portions 15 attached to the inside of the case 10 are attached to turn on / off the contacts.

여기서, 메인 회전노브(12)는 전면패널(11)의 전면에 부착되고 중심부에 결합공(25)이 형성된 후면판(20)및 후면판에 부착되어 돌출된 원통 케이스(21)로 이루어지며, 원통 케이스(21)내부에는 접점부(14,15)의 온/오프 작동을 위한 파지부(23)가 원통 케이스의 내주연(22)과 외주연(24)이 접촉되게 형성된다.Here, the main rotary knob 12 is formed of a rear plate 20 attached to the front of the front panel 11 and the coupling hole 25 formed in the center and a cylindrical case 21 protruding from the rear plate, Inside the cylindrical case 21, a holding part 23 for on / off operation of the contact parts 14 and 15 is formed such that the inner circumferential edge 22 and the outer circumferential edge 24 of the cylindrical case come into contact with each other.

파지부(23)의 후면에는 결합공(25)을 거쳐 케이스(10)내부의 메인 접점부(14)의 회전축(16)과 결합되는 스위칭 회전축(26)이 위치된다.On the rear surface of the gripping portion 23 is a switching rotary shaft 26 coupled with the rotary shaft 16 of the main contact portion 14 in the case 10 via the coupling hole 25.

결합공(25)의 외측에는 삽입홈(27a,27b)이 동일선상으로 형성되고, 삽입홈(27a,27b)에는 스위칭 회전축(26)의 외주연과 접촉되는 금속볼(28)및 코일 스프링(29)이 차례로 결합된다.Insertion grooves (27a, 27b) are formed in the same line on the outside of the coupling hole 25, the metal ball 28 and the coil spring (28) in contact with the outer periphery of the switching rotary shaft 26 in the insertion grooves (27a, 27b) 29) are combined one after the other.

그리고, 록킹 수단은 원통 케이스의 내주연(22)과 접촉되는 회전 노브의 외주연(24)소정 위치에 관통공(30a,30b)을 형성하고, 파지부(23)가 회전함에 따라관통공(30a,30b)과 위치가 일치되어 통로가 형성되도록 원통 케이스의 외주연(24)에 결합홈(31a,31b)을 형성하여 이루어진다.The locking means forms through-holes 30a and 30b at predetermined positions of the outer circumferential edge 24 of the rotary knob in contact with the inner circumferential edge 22 of the cylindrical case, and as the grip portion 23 rotates, the through-hole ( The coupling grooves 31a and 31b are formed in the outer circumference 24 of the cylindrical case so that the positions are coincided with the positions of 30a and 30b.

이때, 관통공(30a,30b)과 결합홈(31a,31b)의 형성위치는 파지부(23)가 회전하여 메인 접점부(14)가 온 상태로 전환되는 위치 및 파지부(23)가 회전하여 메인 접점부가 오프 상태로 전환되는 위치일 때 서로 일치되도록 하여 통로가 형성되게 하는 것이 바람직하다.At this time, the forming positions of the through holes 30a and 30b and the coupling grooves 31a and 31b are rotated by the grip part 23 and the main contact part 14 is turned on, and the grip part 23 is rotated. Therefore, it is preferable that the passage is formed by coinciding with each other when the main contact portion is turned to the off state.

따라서, 파지부(23)가 회전하여 메인 접점부(14)가 온 또는 오프 상태로 전환되면 관통공(30a,30b)과 결합홈(31a,31b)의 위치가 서로 일치되고, 자물쇠 등의 잠금 부재(18)가 관통공과 결합홈을 가로질러 설치되면 파지부(23)가 회전될 수 없는 상태가 되도록 하여 접점부의 온 또는 오프 상태를 계속적으로 유지시킬 수 있게 된다.Therefore, when the gripping portion 23 rotates and the main contact portion 14 is turned on or off, the positions of the through holes 30a and 30b and the coupling grooves 31a and 31b coincide with each other, and locks such as locks are used. When the member 18 is installed across the through-hole and the coupling groove, the grip portion 23 is in a state in which it can not be rotated so that the on or off state of the contact portion can be continuously maintained.

본 발명에서는 메인 회전노브(12)및 메인 접점부(14), 메인 회전노브(12)에 형성된 록킹 수단을 기준으로 설명하였으나, 서브 회전노브(13)및 서브 접점부(15)는 메인 회전노브 및 메인 접점부와 동일한 구성으로 이루어지며, 록킹 수단 역시 동일하다.In the present invention, the main rotary knob 12 and the main contact portion 14, the locking means formed on the main rotary knob 12, but the sub rotary knob 13 and the sub contact portion 15 is the main rotary knob And the same configuration as the main contact portion, and the locking means is also the same.

이와 같은 구성으로 이루어짐으로써 본 발명에 따른 방폭 구조를 갖는 분전반은 작업자가 조작실수에 의해 온 또는 오프 상태의 파지부(23)를 회전시켜 발생되는 안전사고를 미연에 방지할 수 있게 된다.The distribution panel having the explosion-proof structure according to the present invention by such a configuration can prevent the safety accident caused by the operator rotates the holding unit 23 in the on or off state by the operation error.

즉, 파지부(23)가 온 또는 오프 회전된 상태에서 자물쇠 등의 잠금부재(18)가 설치되어 파지부(23)가 회전될 수 없는 상태가 되어 회전노브의 회전이 방지되기 때문이다.That is, since the locking member 18 such as a lock is installed in the state in which the gripping portion 23 is turned on or off, the gripping portion 23 cannot be rotated and rotation of the rotary knob is prevented.

그리고, 본 발명에 따른 방폭 구조를 갖는 분전반은 메인 접점부(14)및 서브 접점부(15)를 엔지니어링 플라스틱 계열의 폴리에스터(polyester) 재질 등으로 하나의 유닛 단위로 각각 밀봉시켜 접점부 자체가 방폭된 구조를 가지도록 형성함으로써 분전반 내부가 이중 방폭 구조로 이루어져 방폭의 안전성이 향상된다.In addition, the distribution panel having an explosion-proof structure according to the present invention seals the main contact portion 14 and the sub contact portion 15 with a unit of an engineering plastic series polyester material, respectively, so that the contact portion itself is sealed. By forming the explosion-proof structure, the interior of the distribution panel has a double explosion-proof structure to improve the safety of explosion-proof.

상기에서 상술한 바와 같이, 본 발명에 따른 방폭 구조를 갖는 분전반은 록킹수단을 구비한 메인 회전노브 및 다수개의 서브 회전노브에 의해 접점부가 온 또는 오프 상태를 안정적으로 유지할 수 있어 위험지역 내에서 발생되는 각종 안전 사고를 미연에 방지할 수 있게 된다.As described above, the distribution panel having an explosion-proof structure according to the present invention can be stably maintained in the on or off state of the contact portion by the main rotary knob and the plurality of sub-rotary knobs provided with locking means, and thus occur in a hazardous area. Various safety accidents can be prevented in advance.

게다가, 분전반 내부의 접점부가 하나의 유닛 단위로 방폭된 구조를 가짐으로써 스파크 발생 등에 의한 폭발 등의 위험요소를 제거할 수 있게 된다.In addition, since the contact portion inside the distribution panel has a structure that is explosion-proof in one unit unit, it is possible to eliminate risk factors such as an explosion due to sparking.

Claims (3)

전면패널에 부착된 회전노브 및 케이스 내부에 부착되어 상기 회전노브의 회전에 따라 온/오프 동작되는 접점부로 이루어진 방폭 스위치가 다수개 구비된 방폭 구조를 갖는 분전반에 있어서,In the distribution panel having an explosion-proof structure is provided with a plurality of explosion-proof switch consisting of a rotary knob attached to the front panel and a contact portion attached to the inside of the case is operated on / off in accordance with the rotation of the rotary knob, 상기 방폭 스위치에 온/오프 동작 상태를 유지시키는 록킹수단이 구비된 것을 특징으로 하는 방폭 구조를 갖는 분전반.The distribution panel having an explosion-proof structure, characterized in that the explosion-proof switch is provided with a locking means for maintaining an on / off operation state. 청구항 1 에 있어서,The method according to claim 1, 상기 록킹 수단은 상기 접점부의 회전축과 결합된 상기 회전노브의 파지부 외주연 소정위치에 결합공을 형성하고,The locking means forms a coupling hole at a predetermined position on the outer circumferential edge of the grip of the rotary knob coupled to the rotation axis of the contact portion, 상기 파지부가 온 또는 오프 위치로 회전함에 따라 상기 결합공과 연통되는 삽입홈을 상기 파지부의 외주연과 접촉되는 상기 회전노브의 원통 케이스에 형성하여,As the gripping portion rotates to an on or off position, an insertion groove communicating with the coupling hole is formed in the cylindrical case of the rotary knob contacting the outer circumference of the gripping portion. 상기 회전노브의 회전을 방지하는 걸림부재가 상기 결합공과 삽입홈의 연결된 통로에 삽입 가능하도록 한 것을 특징으로 하는 방폭 구조를 갖는 분전반.The distribution panel having an explosion-proof structure, characterized in that the locking member for preventing the rotation of the rotary knob to be inserted into the connecting passage of the coupling hole and the insertion groove. 청구항 1 에 있어서,The method according to claim 1, 상기 접점부는 각각의 유닛 단위로 밀봉된 것을 특징으로 하는 방폭 구조를 갖는 분전반.The distribution panel having an explosion-proof structure, characterized in that the contact portion is sealed in each unit unit.
KR1020000040779A 2000-07-15 2000-07-15 Lighting panel board having a explosion and flame proof KR100341999B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100938930B1 (en) * 2008-03-05 2010-01-27 삼화기전 주식회사 Junction box
CN113488883A (en) * 2021-08-05 2021-10-08 上海宝临防爆电器有限公司 Explosion-proof box with explosion-proof surface

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101113319B1 (en) * 2009-12-31 2012-03-13 삼화기전 주식회사 Switch operation device for switch box
KR102071374B1 (en) 2019-06-07 2020-01-30 주식회사 동산전력 Distribution panelboard having device of prevention of explosion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100938930B1 (en) * 2008-03-05 2010-01-27 삼화기전 주식회사 Junction box
CN113488883A (en) * 2021-08-05 2021-10-08 上海宝临防爆电器有限公司 Explosion-proof box with explosion-proof surface

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