KR200169790Y1 - An instrument for measuring earth resistance of concrete electric-pole - Google Patents
An instrument for measuring earth resistance of concrete electric-pole Download PDFInfo
- Publication number
- KR200169790Y1 KR200169790Y1 KR2019990019788U KR19990019788U KR200169790Y1 KR 200169790 Y1 KR200169790 Y1 KR 200169790Y1 KR 2019990019788 U KR2019990019788 U KR 2019990019788U KR 19990019788 U KR19990019788 U KR 19990019788U KR 200169790 Y1 KR200169790 Y1 KR 200169790Y1
- Authority
- KR
- South Korea
- Prior art keywords
- ground
- pole
- measuring
- concrete
- current
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
Abstract
본 고안은 콘크리트 전주용 접지저항 측정기에 관한 것으로, 특히 콘크리트 전주에 변압기와 피뢰기와 같은 기기가 탑재되어 있고 이들의 전력기기에서는 늘 누설전류가 흐르고 있음에 착안하여 이 누설전류를 전류극으로 이용하여 접지저항을 측정하는 휴대형 콘크리트 전주용 접지저항 측정기에 관한 것이며, 콘크리트 전주의 접지선에 연결되어 전주상에 설치된 변압기와 피뢰기등에서 흐르는 불평형 전류와 누설전류를 측정하는 변류기와; 상기 변류기를 상측 단부에 결착하고, 하부로 일정길이 연장되어 나오되, 굴절 가능한 구조로 되어 작업자가 지상에서 조작함에 의해 상기 전주의 접지선에 연결할 수 있도록 구비된 제어봉과; 상기 변류기에서 측정된 전류가 입력되며, 내부에 프로세서를 내장하고 있는 프로세서 내장형 측정기와; 전주의 하부 콘크리트부 근처에 설치되어 대지전위를 측정하는 접지측정용단자와; 상기 접지측정용단자에서 측정된 대지전위를 상기 측정기로 전달하는 대지전위측정용 리드선으로 구성으로 되어, 별도의 전원을 갖지 않고도 누설전류와 불평형전류를 이용하여 운전중인 콘크리트 전주의 접지저항을 측정할 수 있고, 콘크리트 전주에 탑승하지 않고 지상에서의 측정작업이 가능하므로 작업의 편리성을 도모할 수 있어 접지저항을 유지하고 접검하는데 소요되는 비용과 인건비를 절감할 수 있다.The present invention relates to a ground resistance measuring device for concrete poles. In particular, the concrete poles are equipped with devices such as transformers and lightning arresters, and the leakage current flows in these power devices. The present invention relates to a ground resistance measuring device for portable concrete poles for measuring grounding resistance, comprising: a current transformer connected to the ground wire of the concrete pole and measuring unbalanced current and leakage current flowing from a transformer and an arrester installed on the pole; A control rod which is connected to the current transformer at an upper end, extends a predetermined length downward, and becomes a deflectable structure so that an operator can connect to the ground wire of the pole by operating on the ground; A current meter measured by the current transformer and a processor built-in measuring device having a built-in processor therein; A grounding measurement terminal installed near the lower concrete part of the pole and measuring earth potential; It is composed of a ground potential measuring lead that transfers the earth potential measured by the ground measuring terminal to the measuring device, and it is possible to measure the ground resistance of the concrete pole in operation by using leakage current and unbalanced current without having a separate power source. It is possible to make measurements on the ground without boarding concrete poles, thus facilitating the convenience of work, thereby reducing the cost and labor cost of maintaining ground resistance and inspection.
Description
본 고안은 콘크리트 전주용 접지저항 측정기에 관한 것으로, 특히 콘크리트 전주에 변압기와 피뢰기와 같은 기기가 탑재되어 있고 이들의 전력기기에서는 늘 누설전류가 흐르고 있음에 착안하여 이 누설전류를 전류극으로 이용하여 접지저항을 측정하는 휴대형 콘크리트 전주용 접지저항 측정기에 관한 것이다.The present invention relates to a ground resistance measuring device for concrete poles. In particular, the concrete poles are equipped with devices such as transformers and lightning arresters, and the leakage current flows in these power devices. The present invention relates to a grounding resistance meter for portable concrete poles for measuring grounding resistance.
콘크리트 전주에 있어서의 접지저항을 측정하기 위한 종래의 기술은 별도의 전원을 접지극에 공급하고 전압계와 전류계를 접지극에 연결해야하나 전주에서는 접지선을 절연전선으로 사용하므로 이 방법을 시행하는 것이 일반적으로 어렵다.Conventional techniques for measuring ground resistance in concrete poles require a separate power source to be connected to the ground pole and a voltmeter and ammeter connected to the ground pole, but this pole is generally difficult to implement because the ground wire is used as an insulated wire. .
또한, 대지전위를 측정하기 위해서 전주에 탑승해야하는 문제점을 갖고 있다.In addition, in order to measure the earth potential has a problem that you need to board a pole.
첨부된 도면을 참조하여 상기한 종래기술을 상세히 설명하면 다음과 같다.Referring to the accompanying drawings, the prior art will be described in detail as follows.
도 1은 일반적인 콘크리트 전주의 상부 구조물을 설명하기 위한 개략도이고,1 is a schematic diagram for explaining a superstructure of a general concrete pole;
도 2는 종래의 기술에 따라 콘크리트 전주의 접지저항을 측정하는 방법을 설명하기 위한 개략도로서, 서로 연관시켜 함께 설명한다.Figure 2 is a schematic diagram for explaining a method of measuring the ground resistance of concrete pole according to the prior art, it will be described in conjunction with each other.
먼저, 도 1을 살펴보면, 콘크리트 전주(10)의 최상부에는 낙뢰로부터 전주와 전력선을 보호하는 가공지선(1)이 설치되고, 상기 가공지선(1)은 접지선(6)에 의해 접지봉(12)으로 접지되며, 상기 가공지선(1)의 하단부에는 역시 접지되어 각종 애자 및 피뢰기등을 지지하는 금속의 지지물인 완금(11)이 설치되며, 상기 완금(11)에는 지지애자(4)로 지지되는 상도체(3)와, 접지되어있는 피뢰기(2)가 설치되어진다.First, referring to Figure 1, the top of the concrete pole 10 is provided with a processing ground line (1) to protect the pole and power lines from lightning strikes, the processing ground line 1 is a ground rod 12 by the ground wire (6) The ground 11 is grounded at the lower end of the processing ground wire 1, which is grounded to support various insulators and lightning arresters, and is provided with a support 11, and the image 11 supported by the support insulator 4 is provided. The conductor 3 and the grounded lightning arrester 2 are provided.
또한 변압기(9)의 외함과 중선선 접지선(6)과 연결되어 안전한 동작과 위험전압을 저감시키로록 되어있다. 변전소로부터 연결되어온 접지선(5)는 피뢰기의 접지선(7)과 연결되어 접지인입구(8)을 통해 접지극(12)와 연결된다.In addition, it is connected to the enclosure of the transformer 9 and the center line ground wire 6 to reduce the safe operation and dangerous voltage. The ground line 5 connected from the substation is connected to the ground line 7 of the arrester and is connected to the ground electrode 12 through the ground inlet 8.
콘크리트전주위에 설치되는 변압기(9)와 피뢰기(2)가 정상적으로 동작되기 위해서는 가장 먼저 접지상태가 양호해야만 가능하다. 그러므로 양호한 접지상태를 유지하고 이를 주기적으로 점검하는 작업은 양호한 전력공급이라는 측면에서 매우 중요하다.In order for the transformer 9 and the arrester 2 installed on the concrete pole to operate normally, the grounding state must be good first. Therefore, maintaining good grounding and checking it regularly is very important in terms of good power supply.
실제로 접지저항을 측정하려면, 상기 도 2에 도시된 바와 같이 우선, 유입전류를 흘려주는 전원(25)가 있어야하고 이를 측정하는 전류계(24)가 반드시 필요하며, 또한 대지전위상승을 측정하는 전압계(23)도 있어야한다.In order to actually measure the ground resistance, as shown in FIG. 2, first, there must be a power supply 25 through which inflow current flows, and an ammeter 24 for measuring the ground current is necessary, and a voltmeter for measuring ground potential rise ( 23) Should also be
그러나 상기한 종래의 방법은 전력을 공급중인 콘크리트 전주에 적용하게 되면, 전원(25)와 피뢰기(2) 및 변압기(9)에서 흘러나오는 누설전류와의 간섭현상에 의해 정확한 접지저항의 측정이 불가능하고, 절연전선으로 되어있는 접지선(6)과 측정을 위한 리드선(측정선)(21)을 피복이 벗겨진 부분과 연결해야하는 어려운 점이 존재한다.However, when the conventional method is applied to a concrete pole that is supplying power, accurate ground resistance cannot be measured due to interference between leakage current flowing from the power source 25, the arrester 2, and the transformer 9. In addition, there is a difficulty in connecting the ground wire 6, which is made of an insulated wire, and the lead wire (measurement wire) 21 for measurement with the stripped portion.
또한 누설전류와의 간섭현상 때문에 전력을 공급중인 상태에서는 측정이 거의 불가능하다.Also, due to interference with leakage current, measurement is almost impossible while power is being supplied.
따라서 본 고안은 상기와 같은 종래의 문제점을 해결하기 위한 것으로서, 본 고안은 전력을 공급하고 있는 상태에서도 접지저항의 측정이 가능하고, 별도의 전원이 필요없으며, 콘크리트전주에 탑승하지 않고도 측정이 가능한 콘크리트 전주용 접지저항 측정기를 제공함에 그 목적이 있다.Therefore, the present invention is to solve the conventional problems as described above, the present invention is capable of measuring the ground resistance even in the state of supplying power, and does not need a separate power source, it is possible to measure without boarding a concrete pole The purpose is to provide a ground resistance meter for concrete poles.
따라서 본 고안에서는 전주상에 항상 흐르고 있는 누설전류를 이용하여 전류전극을 해결할 수 있고, 크램프형CT를 사용하고 이를 조절하는 제어봉을 이용하여 탑승하는 문제점을 해결할 수 있다.Therefore, in the present invention, it is possible to solve the current electrode by using the leakage current that always flows on the electric pole, and to solve the problem of using the cramp-type CT and using the control rod to adjust it.
도 1은 일반적인 콘크리트 전주의 상부 구조물을 설명하기 위한 개략도.1 is a schematic view for explaining the upper structure of a typical concrete pole.
도 2는 종래의 기술에 따라 콘크리트 전주의 접지저항을 측정하는 방법을 설명하기 위한 개략도.Figure 2 is a schematic diagram for explaining a method of measuring the ground resistance of the concrete pole according to the prior art.
도 3은 본 고안에 따른 접지저항 측정기를 이용하여 콘크리트 전주의 접지저항을 측정하는 방법을 설명하기 위한 개략도.Figure 3 is a schematic diagram for explaining a method of measuring the ground resistance of the concrete pole using a ground resistance meter according to the present invention.
도 4는 상기 도 3에서의 접지저항 측정기의 동작을 설명하기 위한 흐름도4 is a flow chart for explaining the operation of the ground resistance meter in FIG.
＜도면의 주요부분에 대한 부호 설명><Description of Signs of Major Parts of Drawings>
1 : 가공지선 2 : 피뢰기1: overhead line 2: lightning arrester
3 : 전력선 4 : 상도체 지지애자3: power line 4: conductor insulator
5 : 중선선 6 : 변압기 중선선5: middle line 6: transformer medium line
7 : 피뢰기 접지선 8 : 접지선 인입구7: Lightning arrester ground wire 8: Ground wire inlet
9 : 변압기 10 : 콘크리트 전주9: transformer 10: concrete pole
12 : 접지봉 20 : 접지동판12: ground rod 20: ground copper
21 : 대지전위를 측정하기 위한 리드선 22 : 접지측정용 단자21: Lead wire for measuring earth potential 22: Grounding measurement terminal
23 : 대지전위측정용 전압계 24 : 인가전류 측정용 전류계23 voltmeter for measuring earth potential 24 ammeter for measuring applied current
25 : 전류 인가용 전원 31 : 누설전류 측정용 CT25: power supply for current application 31: CT for leakage current measurement
32 : 굴절가능한 CT 제어봉 33 : 누설전류 전달용 전선32: refractorable CT control rod 33: wire for transferring leakage current
34 : 프로세서 내장용 메터 35 : 대지전위측정용 리드선34: processor built-in meter 35: ground potential measurement lead
상기와 같은 목적을 달성하기 위한 본 고안에 따른 콘크리트 전주용 접지저항 측정기는, 콘크리트 전주용 접지저항 측정기에 있어서,Concrete resistance ground resistance measuring device according to the present invention for achieving the above object, in the concrete resistance ground resistance measuring device,
콘크리트 전주의 접지선에 연결되어 전주상에 설치된 변압기와 피뢰기등에서 흐르는 불평형 전류와 누설전류를 측정하는 변류기(31)와;A current transformer 31 connected to the ground wire of the concrete pole and measuring an unbalanced current and a leakage current flowing from a transformer and an arrester installed on the pole;
상기 변류기(31)를 상측 단부에 결착하고, 하부로 일정길이 연장되어 나오되, 굴절 가능한 구조로 되어 작업자가 지상에서 조작함에 의해 상기 전주의 접지선에 연결할 수 있도록 구비된 제어봉(32)과;A control rod (32) for binding the current transformer (31) to an upper end and extending a predetermined length to the bottom, and having a deflectable structure to be connected to the ground wire of the pole by the operator operating on the ground;
상기 변류기(31)에서 측정된 전류가 입력되며, 내부에 프로세서를 내장하고 있는 프로세서 내장형 측정기(34)와;A current meter measured by the current transformer 31 and a processor-integrated measuring instrument 34 having a processor therein;
전주의 하부 콘크리트부 근처에 설치되어 대지전위를 측정하는 접지측정용단자(22)와;A grounding measurement terminal 22 installed near the lower concrete part of the pole and measuring earth potential;
상기 접지측정용단자(22)에서 측정된 대지전위를 상기 측정기(34)로 전달하는 대지전위측정용 리드선(35)을 포함한 구성으로 됨을 특징으로 한다.The ground potential measurement lead 22 is characterized in that the configuration including a ground potential measurement lead wire 35 for transmitting to the measuring device (34).
이하, 본 고안에 따른 콘크리트 전주용 접지저항 측정기 및 그 측정시스템에 관하여 첨부 도면을 참조하여 상세히 설명한다.Hereinafter, a ground resistance measuring device for concrete poles according to the present invention and a measuring system thereof will be described in detail with reference to the accompanying drawings.
도 3은 본 고안에 따른 콘크리트 전주의 접지저항 측정기를 이용하여 접지저항을 측정하는 방법을 설명하기 위한 도면이고,3 is a view for explaining a method for measuring grounding resistance using a ground resistance measuring instrument of concrete pole according to the present invention,
도 4는 상기 도 3의 본 고안에 따른 콘크리트 전주용 접지저항측정기를 사용하여 접지저항을 측정하는 과정을 설명하기 위한 도면이다.4 is a view for explaining a process of measuring the ground resistance using a ground resistance measuring device for concrete pole according to the present invention of FIG.
먼저, 도 3을 참조하면 콘크리트 전주의 접지저항을 측정하기위한 전원으로서 피뢰기(2)와 혹은 변압기(9)의 누설전류를 사용하는 것이 본고안에 따른 기술의 핵심이라 할 수 있으므로 본 고안에서는 전원에서 흐르는 누설전류를 클램프형 변류기(31)를 사용하여 측정한다.First, referring to FIG. 3, since the leakage current of the arrester 2 and / or the transformer 9 is used as a power source for measuring the ground resistance of concrete poles, the present invention can be referred to as the core of the technology. The leakage current flowing is measured using the clamp type current transformer 31.
상기 변류기(31)는 굴절 가능한 제어봉(32)에 의해서 입구가 조절되므로 작업자가 지상에서 조작하여 전선에 걸수 있는 구조로 되어 있다. 굴절 가능한 제어봉(32)은 승용차등에 탑재가 가능한 크기로 굴절되는 형상을 갖는다.Since the inlet is controlled by the deflectable control rod 32, the current transformer 31 has a structure in which a worker can operate on the ground and hang it on an electric wire. The refracting control rod 32 has a shape that is refracted to a size that can be mounted on a passenger car or the like.
상기 변류기(31)에서 측정된 전류는 프로세서 내장형 측정기(34)에 의해 가공되어 접지저항을 계산하는 요소로 사용되는 데, 이 경우 별도의 접지저항 측정용 전원이 필요없게 된다.The current measured by the current transformer 31 is processed by the processor built-in measuring device 34 and used as an element for calculating the ground resistance. In this case, a separate ground resistance measurement power supply is not necessary.
또한, 대지전위를 측정하기 위한 접지측정용단자(22)중 콘크리트 근처에 있는 단자는 가능한한 콘크리트와 가깝게 타설하여 콘크리트전주에 인가되는 대지전위상승이 전부 측정되도록 한다.In addition, the terminal near the concrete of the ground measuring terminal 22 for measuring the earth potential is placed as close as possible to the concrete so that all the earth potential rise applied to the concrete pole.
이것은 도심의 전주 주위가 콘크리트와 같은 단단한 재료로 되어있어 단자(22)의 타설이 어려우므로 전주의 바로 밑에 타설하는 것은 실용상 장점으로 작용한다. 또한 상대적으로 먼 접지측정용단자(22)는 실제로 전류를 흘리는 작용이 아니라 다만 전위의 영점만을 정하는 단자이므로 깊이 타설할 필요는 없다.This is because the circumference of the pole in the city is made of a solid material such as concrete is difficult to place the terminal 22, so placing underneath the pole is a practical advantage. In addition, the relatively distant ground measuring terminal 22 does not need to be poured deep because it is a terminal that determines only the zero point of the potential, not actually flowing current.
도 4는 상기 도 3에 도시된 본 고안의 접지저항 측정기를 이용하여 접지저항을 측정할 때 접지저항 측정기의 동작흐름을 도시한 도면이다.4 is a view illustrating an operation flow of the ground resistance meter when measuring the ground resistance using the ground resistance meter of the present invention shown in FIG.
상기 도면에서, 누설전류를 측정하는 단계(41)은 상기 변류기(31)에 의해 측정되어 고주파를 걸러내는 저역필터(42)를 통과함과 동시에 A/D(아날로그/디지털) 변환기(미도시)를 거쳐 접지저항 계산단계(45)로 전달된다. 이때, 상기 접지저항 계산단계(45)에서는 내부에 장착된 알고리즘에 의해 자동계산 처리되도록 구비되어 있다.In the figure, the step 41 of measuring leakage current passes through a low pass filter 42 which is measured by the current transformer 31 and filters high frequencies, and at the same time an A / D (analog / digital) converter (not shown). It passes through the ground resistance calculation step 45 through. In this case, the ground resistance calculation step 45 is provided to be automatically calculated by an algorithm mounted therein.
또한, 접지저항 측정용 단자(22)에 의해서 측정된 대지전위는 역시 저역필터(44)와 A/D 변환기를 거쳐 접지저항 계산부(45)에 전달된다. 이렇게 전달된 정보는 마이크로프로세서(46)에 의해서 가공되고 제어된 후 작업자에게 출력(47)된다.In addition, the ground potential measured by the ground resistance measuring terminal 22 is also transmitted to the ground resistance calculator 45 via the low pass filter 44 and the A / D converter. The information thus delivered is processed and controlled by the microprocessor 46 and then outputted to the operator 47.
이상에서 설명한 바와 같이, 본 고안에 따른 콘크리트 전주용 접지저항 측정기는 별도의 전원을 갖지 않고도 누설전류와 불평형전류를 이용하여 운전중인 콘크리트 전주의 접지저항을 측정할 수 있고, 콘크리트 전주에 탑승하지 않고 지상에서의 측정작업이 가능하므로 작업의 편리성을 도모할 수 있어 접지저항을 유지하고 접검하는데 소요되는 비용과 인건비의 절감에 크게 기여할 수 있다.As described above, the ground resistance measuring device for concrete pole according to the present invention can measure the ground resistance of the concrete pole in operation by using a leakage current and an unbalanced current without having a separate power source, and without boarding the concrete pole. Since the measurement work on the ground is possible, the convenience of the work can be achieved, which can greatly contribute to the reduction of the cost and labor cost for maintaining and inspecting the ground resistance.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990019788U KR200169790Y1 (en) | 1999-09-15 | 1999-09-15 | An instrument for measuring earth resistance of concrete electric-pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990019788U KR200169790Y1 (en) | 1999-09-15 | 1999-09-15 | An instrument for measuring earth resistance of concrete electric-pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR200169790Y1 true KR200169790Y1 (en) | 2000-02-15 |
Family
ID=19588840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019990019788U KR200169790Y1 (en) | 1999-09-15 | 1999-09-15 | An instrument for measuring earth resistance of concrete electric-pole |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200169790Y1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100402062B1 (en) * | 2001-01-11 | 2003-10-17 | 한빛이디에스(주) | Apparatus for measuring ground resistance of transmission tower posts |
| KR100521635B1 (en) * | 2001-12-14 | 2005-10-12 | 주식회사 포스코 | Apparatus for searching the principal earth plate |
| KR100775601B1 (en) | 2006-05-17 | 2007-11-15 | 제주대학교 산학협력단 | Measuring system for soil resistance |
| KR101066617B1 (en) | 2009-09-30 | 2011-09-22 | 한국전력공사 | Method for ground resistance measurement of concrete electric pole |
| KR20190037638A (en) * | 2017-09-29 | 2019-04-08 | 한국전력공사 | Grounding resistance measuring apparatus |
| KR101995479B1 (en) * | 2018-04-12 | 2019-07-02 | (주)광진 | Measuring apparatus and method for grounding resistance of telephone pole using separating pole |
| KR102028183B1 (en) * | 2019-08-30 | 2019-10-04 | (주)웅진엔지니어링 | Exposure apparatus for earthing resistance measurement of earth wire |
| KR20230101059A (en) | 2021-12-29 | 2023-07-06 | 한국전력공사 | Remote ground resistance automatic measuring tester with solar panel |
-
1999
- 1999-09-15 KR KR2019990019788U patent/KR200169790Y1/en not_active IP Right Cessation
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100402062B1 (en) * | 2001-01-11 | 2003-10-17 | 한빛이디에스(주) | Apparatus for measuring ground resistance of transmission tower posts |
| KR100521635B1 (en) * | 2001-12-14 | 2005-10-12 | 주식회사 포스코 | Apparatus for searching the principal earth plate |
| KR100775601B1 (en) | 2006-05-17 | 2007-11-15 | 제주대학교 산학협력단 | Measuring system for soil resistance |
| KR101066617B1 (en) | 2009-09-30 | 2011-09-22 | 한국전력공사 | Method for ground resistance measurement of concrete electric pole |
| KR20190037638A (en) * | 2017-09-29 | 2019-04-08 | 한국전력공사 | Grounding resistance measuring apparatus |
| KR101983004B1 (en) | 2017-09-29 | 2019-05-29 | 한국전력공사 | Grounding resistance measuring apparatus |
| KR101995479B1 (en) * | 2018-04-12 | 2019-07-02 | (주)광진 | Measuring apparatus and method for grounding resistance of telephone pole using separating pole |
| KR102028183B1 (en) * | 2019-08-30 | 2019-10-04 | (주)웅진엔지니어링 | Exposure apparatus for earthing resistance measurement of earth wire |
| KR20230101059A (en) | 2021-12-29 | 2023-07-06 | 한국전력공사 | Remote ground resistance automatic measuring tester with solar panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2394250C2 (en) | Method and device to pinpoint faulty grounding section | |
| KR100402062B1 (en) | Apparatus for measuring ground resistance of transmission tower posts | |
| KR200169790Y1 (en) | An instrument for measuring earth resistance of concrete electric-pole | |
| JP2003523519A (en) | Voltage sensor | |
| CN201681115U (en) | Current sensor used for grounding current detection of transmission poles and towers | |
| CN105846330B (en) | For arrester charged for replacement leakage current table special complete instrument and operational method | |
| JP2000206162A (en) | Method and system for measuring grounding resistance | |
| CN219102509U (en) | Microphone support device and audible noise measuring apparatus | |
| ATE327515T1 (en) | DEVICE FOR MEASURING THE CAPACITY OF ELECTRICAL WIRES | |
| CN105388354A (en) | Mounting assembly for all-optical overvoltage sensor for overvoltage measurement | |
| CN113203926B (en) | Direct-current withstand voltage tester and method for inter-phase lap joint water conduit of water-cooled generator | |
| CN106970325B (en) | Generator handbag insulation reverse wiring inspection device and method for high potential measurement | |
| KR20050048407A (en) | Apparatus for measuring earth resistance | |
| JPS644628B2 (en) | ||
| CN107064643A (en) | 1000 kilovolts of GIS device major loop method for testing resistance | |
| KR200339609Y1 (en) | A concrete electric pole | |
| CN205960612U (en) | Zinc oxide lightning arrester | |
| CN108445300A (en) | A kind of method and apparatus for measuring transformer running parameter | |
| Caprara et al. | Partial Discharge measurements during AC voltage test: a fast and effective method for the site commissioning of long EHV XLPE cable systems | |
| CN220289806U (en) | Multisection zinc oxide arrester leakage current measures auxiliary device | |
| CN106291050A (en) | A kind of erecting device of the optics overvoltage sensor for transmission line of electricity | |
| CN115173310A (en) | Operation method for changing loaded linear rod into tension-resistant rod and additionally installing pole switch | |
| JPH0442779Y2 (en) | ||
| CN104267278B (en) | Reactive power compensation device and live-part verification method of lightning arrester | |
| Gutman et al. | BOLD™: New Line Design Meets New Impedance Measurement Method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20041119 Year of fee payment: 6 |
|
| LAPS | Lapse due to unpaid annual fee |