KR200341323Y1 - Ground rods for low impedance - Google Patents
Ground rods for low impedance Download PDFInfo
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- KR200341323Y1 KR200341323Y1 KR20-2003-0034045U KR20030034045U KR200341323Y1 KR 200341323 Y1 KR200341323 Y1 KR 200341323Y1 KR 20030034045 U KR20030034045 U KR 20030034045U KR 200341323 Y1 KR200341323 Y1 KR 200341323Y1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
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Abstract
본 고안은 저임피던스용 접지봉에 관한 것으로, 몸체(10)의 상부에 단자접속부(12)와, 이 단자접속부(12)에 연장된 방전부(14)로 구성된 접지봉에서, 상기 몸체(10)의 방전부(14)의 길이방향을 따라 복수개의 평면이 서로 맞닿게 결합되어, 상기 방전부(14)의 표면을 따라 적어도 3개 이상의 모서리부(14a)가 형성된 구조로 되어 있다.The present invention relates to a low-impedance ground rod, comprising a terminal connecting portion 12 on the upper portion of the body 10, and a ground rod composed of a discharge portion 14 extending to the terminal connecting portion 12, the room of the body 10 A plurality of planes are coupled to each other in contact with each other along the longitudinal direction of the whole portion 14, and at least three corner portions 14a are formed along the surface of the discharge portion 14.
본 고안에 따른 접지봉은 방전부(14)에 형성된 모서리부(14a)를 통해서 전하의 방전을 극대화하여 지중방전에 의한 임펄스임피던스를 감소시킬 수 있고, 이에 따라 절연파괴에 따른 전기설비사고나 타설비로 이상전압이 유입되는 사고를 예방할 수 있게 된다.Grounding rod according to the present invention can reduce the impulse impedance due to underground discharge by maximizing the discharge of the charge through the edge portion (14a) formed in the discharge portion 14, accordingly electrical equipment accidents or other equipment due to insulation breakdown As a result, an accident that an abnormal voltage is introduced can be prevented.
Description
본 고안은 접지봉에 관한 것으로, 특히 접지선과 연결한 상태로 토양에 매설하여 낙뇌 등에 의해 순간적으로 흐르는 급준파의 서지전류를 대지로 보내어 방전시킬 수 있는 저임피던스용 접지봉에 관한 것이다.The present invention relates to a grounding rod, and more particularly, to a low-impedance grounding rod that can be discharged by sending a surge current of a steep wave that flows momentarily by a thunderstorm or the like by embedding it in soil in connection with a grounding wire.
일반적으로, 접지는 인위적인 방법으로 전기설비의 일부를 전기적으로 대지와 결합하는 것으로, 이때 대지는 무한대의 0전위 기준점으로 작용한다. 전기설비와 대지의 전기적인 결합은 접지전극을 통하여 이루어지고, 고정전류, 토양, 접지전극을 변수로 하는 접지저항 또는 임피던스가 존재하고 있는 것이다. 상기 접지저항은 접지극에 유입하는 전류와 유입점의 전위와의 비로 정의할 수 있고, 유입전류의 파형, 주파수, 토양의 종류, 접지극의 길이 및 형상, 맬설방법과 깊이 등에 따라 크게 달라진다. 한편, 낙뇌와 같은 급준파 서지전류가 접지극에 유입될 경우 급준파전류에 대한 순간전위 상승의 비를 임펄스임피던스로 정의한다.In general, grounding is an artificial way of electrically coupling a portion of an electrical installation to the earth, where the earth acts as an infinite zero potential reference point. The electrical coupling between the electrical equipment and the ground is made through the grounding electrode, and there is a grounding resistance or impedance with a fixed current, soil, and grounding electrode as variables. The ground resistance may be defined as a ratio between the current flowing into the ground electrode and the potential of the inflow point, and varies greatly depending on the waveform of the inflow current, the frequency, the type of soil, the length and shape of the ground electrode, the method and depth of the ground electrode. On the other hand, when a surge surge current such as a thunderstorm flows into the ground electrode, the ratio of the instantaneous potential rise to the surge current is defined as an impulse impedance.
한편, 땅속에 매설된 접지봉의 지중방전은 토양의 조건, 인가되는 전위 등 외부조건이 같을 경우, 접지봉의 형상에 따른 표면의 전위경도에 따라 방전특성이 변화된다.On the other hand, the ground discharge of the ground rod embedded in the ground, when the external conditions such as soil conditions, applied potential, the same, the discharge characteristics are changed according to the potential hardness of the surface according to the shape of the ground rod.
종래의 접지봉은 도 1에 도시된 바와 같이, 몸체(100)의 상부에 단자접속부(102)와 이 단자접속부(102)에 연장된 방전부(104)로 이루어져 있다. 상기 단자접속부(102)는 중공부가 형성되어 리드선을 끼워서 연결하도록 되어 있다. 그리고, 상기 방전부(104)는 내부에 중공부가 없는 솔리드하게 되어 있고, 하부에 뾰족한 단말부(106)이 형성되어 용이하게 매설하도록 되어 있다.As shown in FIG. 1, the conventional ground rod includes a terminal connection part 102 and an electric discharge part 104 extending to the terminal connection part 102 on an upper portion of the body 100. The terminal connecting portion 102 has a hollow portion formed to connect the lead wires. The discharge part 104 is solid without a hollow part therein, and a pointed terminal part 106 is formed at the lower part so as to be easily buried.
그런데, 종래의 접지봉은 몸체(100)의 방전부(104) 단면이 원형으로 이루어져 곡율반경이 크므로 금속표면으로부터 전하의 방출이 어려운 단점이 있었다. 이로 인하여 낙뇌 등 급준파 서지전류가 방전부(104)로 유입될 경우, 고전압에서 지중방전이 발생하여 임펄스임피던스를 저감하는데 한계가 있었고, 대지전위의 상승치가 매우 크게 되므로 그 영향으로 전기설비의 절연파괴, 이상전압의 발생 및 파급되는 원인이 되었다.However, the conventional ground rod has a disadvantage in that discharge of charge from the metal surface is difficult because the radius of curvature of the discharge portion 104 of the body 100 is circular. As a result, when a steep surge current such as a thunderstorm flows into the discharge unit 104, there is a limit to reducing the impulse impedance due to the ground discharge at high voltage, and the rise of the earth potential is very large, and thus the insulation of electrical equipment is affected. It was the cause of breakdown, occurrence of abnormal voltage and spread.
이에 본 고안은 상술한 문제점을 해소하기 위해 안출된 것으로, 낙뇌 등 급준파 서지전류가 접지봉에 유입되더라도 지중방전을 용이하게 하여 임펄스임피던스를 저감할 수 있으며, 대지전위의 상승을 감소시켜 설비사고 및 안전사고를 줄일 수 있는 저임피던스용 접지봉을 제공하는데 그 목적이 있다.Therefore, the present invention was devised to solve the above-mentioned problems. Even if a steep wave surge current such as a thunderstorm flows into the ground rod, the earth discharge can be easily reduced, and the impulse impedance can be reduced. The objective is to provide a low impedance ground rod that can reduce safety accidents.
상술한 목적을 달성하기 위하여 본 고안은, 몸체의 상부에 단자접속부와, 이 단자접속부에 연장된 방전부로 구성된 접지봉에 있어서, 상기 몸체의 방전부 길이방향을 따라 복수개의 평면이 서로 맞닿게 결합되어, 상기 방전부의 표면을 따라 적어도 3개 이상의 모서리부가 형성된 구조로 되어 있다.In order to achieve the above object, the present invention, in the ground rod consisting of a terminal connecting portion on the upper portion of the body, and the discharge portion extending to the terminal connecting portion, the plurality of planes along the longitudinal direction of the discharge portion of the body coupled to each other Thus, at least three corner portions are formed along the surface of the discharge portion.
여기서, 상기 몸체의 방전부의 단면이 3각형으로 형성되는 것이 바람직하다.Here, the cross section of the discharge portion of the body is preferably formed in a triangle.
그리고, 상기 몸체의 방전부는 서로 다른 두종류의 방전재가 적층형성되되, 표면재가 내면재 보다 열전도성이 높도록 구성되어 있다.The discharge part of the body is formed by stacking two different types of discharge materials, and the surface material is configured to have higher thermal conductivity than the inner surface material.
이와 같은 본 고안에 따른 저임피던스용 방전봉에 의하면, 방전부의 표면을 따라 형성된 모서리부를 통해서 전하의 방전을 극대화하여 지중방전에 의한 임펄스임피던스를 대폭 감소시킬 수 있게 된다.According to the low-impedance discharge rod according to the present invention, by maximizing the discharge of the charge through the edge formed along the surface of the discharge portion it is possible to significantly reduce the impulse impedance due to underground discharge.
도 1은 종래기술에 따른 접지봉을 도시한 사시도,1 is a perspective view showing a ground rod according to the prior art,
도 2는 본 고안에 따른 저임피던스용 접지봉을 도시한 사시도,Figure 2 is a perspective view showing a ground rod for low impedance according to the present invention,
도 3은 도 2의 A-A선을 따라 절단한 단면도이다.3 is a cross-sectional view taken along line A-A of FIG. 2.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
10 : 몸체 12 : 단자접속부10 body 12 terminal connection
14 : 방전부 14a : 모서리부14: discharge portion 14a: corner portion
14′: 표면재 14″: 내면재14 ′: Surface material 14 ″: Internal material
16 : 단말부16: terminal
이하, 본 고안의 바람직한 실시예를 첨부한 예시도면에 따라 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.
도 2는 본 고안에 따른 접지봉을 도시한 사시도이고, 도 3은 도 2의 A-A선을 따라 절단한 단면도이다.Figure 2 is a perspective view showing a ground rod according to the present invention, Figure 3 is a cross-sectional view taken along the line A-A of FIG.
본 고안에 따른 저임피던스용 접지봉은 도 2 및 도 3에 도시된 바와 같이, 몸체(10)의 상부에 단자접속부(12)와, 이 단자접속부(12)에 연장된 방전부(14)로 구성되어 있다. 여기서, 상기 단자접속부(12)는 파이프타입으로 중공부가 형성되어 리드선을 끼워서 연결하도록 되어 있다.The low impedance grounding rod according to the present invention, as shown in Figures 2 and 3, is composed of a terminal connecting portion 12 on the upper portion of the body 10, and the discharge portion 14 extending to the terminal connecting portion 12 have. Here, the terminal connecting portion 12 is a pipe type hollow portion is formed so as to connect the lead wires.
상기 몸체(10)의 방전부(14)는 길이방향을 따라 복수개의 평면이 서로 맞닿게 결합되어, 상기 방전부(14)의 표면을 따라 적어도 3개 이상의 모서리부(14a)가 형성되어 있다. 여기서, 방전부(14)은 결합되는 평면의 갯수에 따라 여러종류의 다각형이 만들어질 수 있다.도 3에 도시된 바와 같이, 상기 방전부(14)의 단면은 정3각형으로 제작되는 것이 바람직하다.The discharge portion 14 of the body 10 is coupled to a plurality of planes in contact with each other along the longitudinal direction, at least three or more corner portions 14a are formed along the surface of the discharge portion (14). Here, the discharge unit 14 may be made of a variety of polygons according to the number of planes that are coupled. As shown in Figure 3, the cross section of the discharge unit 14 is preferably made of a regular triangle. Do.
그리고, 상기 몸체(10)의 방전부(14)는 서로 다른 두종류의 방전재(14′,14″)가 적층형성되되, 표면재(14′)가 내면재(14″) 보다 열전도성이 높도록 되어 있다. 여기서, 표면재(14′)는 구리로 되고, 내면재(14″)는 철재로 제작되는 것이 바람직하다.The discharge part 14 of the body 10 is formed by stacking two different kinds of discharge materials 14 'and 14 ″, and the surface material 14' has a higher thermal conductivity than the inner surface material 14 ″. It is supposed to be. Here, it is preferable that the surface material 14 'is made of copper, and the inner surface material 14 "is made of iron.
한편, 상기 방전부(14)의 하단에는 단말부(16)가 연장되어 뾰족하게 형성되어 있다. 여기서, 단말부(16)는 타입할 때 마찰을 줄이기 위하여 강도가 높은 강철로 제작되는 것이 바람직하다.On the other hand, the terminal portion 16 is extended to the lower end of the discharge portion 14 is formed sharply. Here, the terminal portion 16 is preferably made of high strength steel to reduce friction when typed.
아래에서 표 1에서는 동일한 규격의 종래의 원형접지봉과 본 고안의 저임피던스 접지봉의 특성을 비교한 것이다.Table 1 below compares the characteristics of the conventional circular ground rod of the same specification and the low impedance ground rod of the present invention.
표 1. 원형타입의 접지봉과 저임피던스 접지동봉의 특성 비교Table 1. Comparison of characteristics of circular type ground rod and low impedance ground rod
본 고안의 구성에 의하면, 낙뇌 등의 급준파 서지전류가 유입되더라도 몸체(10)의 방전부(14)의 표면을 따라 복수개로 형성된 모서리부(14a)를 통해서 전하의 방전을 극대화하여 지중방전에 의한 임펄스임피던스를 대폭 감소시킬 수 있게 되는 것이다.According to the constitution of the present invention, even if a steep wave surge current such as a thunderstorm flows, underground discharge is maximized through a plurality of corner portions 14a formed along the surface of the discharge portion 14 of the body 10. It is possible to greatly reduce the impulse impedance.
이상에서 설명한 바와 같은 본 고안에 따른 저임피던스 접지봉에 의하면, 종래의 원형타입의 접지봉을 삼각형 타입으로 제작함으로써, 제작비용의 상승없이 기계적 강도를 개선하여 시공성을 향상시킬 수 있게 된다.According to the low-impedance ground rod according to the present invention as described above, by manufacturing a conventional circular ground rod in a triangular type, it is possible to improve the workability by improving the mechanical strength without increasing the manufacturing cost.
그리고, 본 고안의 접지봉은 전기적으로 정상임피던스는 물론 지중방전에 의한 임펄스임피던스를 감소시켜, 낙뇌 등의 급준파 서지전류가 유입되더라도 대지전위 상승치를 저감할 있게 된다. 이에 따라 절연파괴에 따른 전기설비사고, 타설비로 이상전압이 유입되는 사고, 접촉전압 및 보폭전압의 감소에 따른 인체의 감전사고를 최소화할 수 있는 것이다.In addition, the ground rod of the present invention electrically reduces the impulse impedance caused by underground discharge as well as the normal impedance, thereby reducing the ground potential rise even if a steep wave surge current such as a thunderstorm flows. Accordingly, it is possible to minimize electric equipment accidents due to insulation breakdown, accidents in which abnormal voltages are introduced into other facilities, and electric shock accidents caused by reduction of contact voltage and stride voltage.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0034045U KR200341323Y1 (en) | 2003-10-30 | 2003-10-30 | Ground rods for low impedance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0034045U KR200341323Y1 (en) | 2003-10-30 | 2003-10-30 | Ground rods for low impedance |
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| KR200341323Y1 true KR200341323Y1 (en) | 2004-02-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101400200B1 (en) * | 2013-06-12 | 2014-05-28 | 선광엘티아이(주) | Conduction wire having thunderbolt inducer emitting ionic |
| CN110265801A (en) * | 2019-07-18 | 2019-09-20 | 国网山东省电力公司电力科学研究院 | A kind of environment-friendly type aluminum bronze rare earth alloy vertical grounding electrode and preparation method thereof |
| CN110265801B (en) * | 2019-07-18 | 2024-05-31 | 国网山东省电力公司电力科学研究院 | Environment-friendly aluminum-copper-rare earth alloy vertical grounding electrode and preparation method thereof |
-
2003
- 2003-10-30 KR KR20-2003-0034045U patent/KR200341323Y1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101400200B1 (en) * | 2013-06-12 | 2014-05-28 | 선광엘티아이(주) | Conduction wire having thunderbolt inducer emitting ionic |
| CN110265801A (en) * | 2019-07-18 | 2019-09-20 | 国网山东省电力公司电力科学研究院 | A kind of environment-friendly type aluminum bronze rare earth alloy vertical grounding electrode and preparation method thereof |
| CN110265801B (en) * | 2019-07-18 | 2024-05-31 | 国网山东省电力公司电力科学研究院 | Environment-friendly aluminum-copper-rare earth alloy vertical grounding electrode and preparation method thereof |
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