KR940011954A - Microcurrent Measuring Device and Method - Google Patents

Microcurrent Measuring Device and Method Download PDF

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Publication number
KR940011954A
KR940011954A KR1019920021856A KR920021856A KR940011954A KR 940011954 A KR940011954 A KR 940011954A KR 1019920021856 A KR1019920021856 A KR 1019920021856A KR 920021856 A KR920021856 A KR 920021856A KR 940011954 A KR940011954 A KR 940011954A
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KR
South Korea
Prior art keywords
flashing
current
microcurrent
electrical contact
measuring
Prior art date
Application number
KR1019920021856A
Other languages
Korean (ko)
Other versions
KR960005603B1 (en
Inventor
타다하루 나까야마
Original Assignee
쿠라우찌 노리타카
스미도모덴기고오교오 가부시기가이샤
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.)
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Publication date
Application filed by 쿠라우찌 노리타카, 스미도모덴기고오교오 가부시기가이샤 filed Critical 쿠라우찌 노리타카
Publication of KR940011954A publication Critical patent/KR940011954A/en
Application granted granted Critical
Publication of KR960005603B1 publication Critical patent/KR960005603B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R5/00—Instruments for converting a single current or a single voltage into a mechanical displacement

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

본 발명은 전기접점을 개재해서 흐르는 미소전류를, 상기 접점의 접촉저항의 안정화를 얻어 잡음전압을 저감한 환경에서 미소전류를 확실하게 측정할 수 있는 장치를 제공하는 것을 목적으로 하며, 그 구성은, 미소전류를 측정하는 측정회로에 접속되어 있는 전기접점(al,a2, RY1a,RY2a)에 상기 미소전류보다 큰 플래싱전류를 환류해서 흐르게 하기 위한 절환수단(21-2n), 플래싱용 전원(15, 12), 타이머(16), 환류접속수단(a3, Ry3al, Ry3a2)을 구비하고 있는 것을 특징으로 한다.It is an object of the present invention to provide a device capable of reliably measuring a microcurrent flowing through an electrical contact in an environment in which the contact resistance of the contact is stabilized to reduce a noise voltage. Switching means (2 1-2 n ) for flowing a flashing current larger than the small current to the electrical contacts al, a2, RY1a and RY2a connected to the measuring circuit for measuring the small current, and a power supply for flashing (15, 12), timer 16, and reflux connection means a3, Ry3al, Ry3a2.

Description

미소전류측정장치 및 방법Microcurrent Measuring Device and Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 일실시예를 표시한 회로구성도,1 is a circuit diagram showing an embodiment of the present invention,

제2도는 제1도의 장치를 사용해서 측정대상케이블(12)에 대해서 관측된 플래싱후의 전압기록도,FIG. 2 is a voltage record after flashing observed with respect to the cable 1 2 to be measured using the apparatus of FIG.

제3도는 제1도의 장치를 사용해서 측정대상케이블(19)에 대해서 관측된 플래싱후의 전압기록도.3 is a voltage record after flashing observed with respect to the cable to be measured 1 9 using the apparatus of FIG.

Claims (2)

측정대상미소전류를 측정하는 측정회로에 접속되어 있는 전기접점에 상기 미소전류보다 큰 플래싱전류의 통전으로 절환하는 절환수단과, 상기 플랜싱전류를 공급하는 플래싱용전원과, 상기 전기접점, 절환수단 및 플래싱용 전원을 개재해서 플래싱전류를 환류시키는 환류접속수단을 구비하고, 상기 환류접속수단은 또 타이머수단을 구비하고, 이 타이머수단은 상기 절환수단이 상기 전지접점을 플래싱 전류의 통전으로 절환한 소정시간후에 상기 플래싱전류의 통전을 차단하는 것을 특징으로 하는 미소전류측정장치.Switching means for switching the energization of a flashing current larger than the microcurrent to an electrical contact connected to a measurement circuit for measuring a microcurrent to be measured, a flashing power supply for supplying the planing current, and the electrical contact and switching means. And reflux connection means for refluxing the flashing current via a flashing power source, wherein the reflux connection means further includes a timer means, wherein the switching means switches the battery contact to energize flashing current. The micro-current measuring device, characterized in that the energization of the flashing current is cut off after a predetermined time. 활선하에서 고압전력케이블에 직류신호전압을 중첩인가하고, 측정대상케이블의 차페단부와 대지사이에 삽입된 미소전류측정장치에 의해 전기접점을 개재해서 흐르는 누설미소전류를 판독하므로서 고압전력케이블의 절연저항을 측정하는 미소전류 측정방법에 있어서, 상기 누설미소전류의 측정에 앞서서, 상기 전기접점을 플래싱용전원에 접속하고, 이 전기접점을 개재해서 상기 누설미소전류보다 큰 플래싱전류를 단시간 흐르게 하고, 전기접점의 접촉저항의 안정화를 행하는 단계를 포함한 것을 특징으로 하는 미소전류측정방법.Insulation of high voltage power cable by applying DC signal voltage to high voltage power cable under live wire and reading leakage small current flowing through electrical contact by micro current measuring device inserted between shield end of cable to be measured and earth. In the microcurrent measuring method of measuring resistance, prior to the measurement of the leakage microcurrent, the electrical contact is connected to a flashing power supply, and a flashing current larger than the leakage microcurrent is flown for a short time through the electrical contact. A microcurrent measuring method comprising the step of stabilizing the contact resistance of the electrical contact. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920021856A 1991-11-21 1992-11-20 Current mesurement circuit and method KR960005603B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP03305936A JP3029070B2 (en) 1991-11-21 1991-11-21 Microcurrent measuring device and method
JP91-305936 1991-11-21

Publications (2)

Publication Number Publication Date
KR940011954A true KR940011954A (en) 1994-06-22
KR960005603B1 KR960005603B1 (en) 1996-04-26

Family

ID=17951082

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920021856A KR960005603B1 (en) 1991-11-21 1992-11-20 Current mesurement circuit and method

Country Status (2)

Country Link
JP (1) JP3029070B2 (en)
KR (1) KR960005603B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100802094B1 (en) * 2005-03-18 2008-02-13 한국전기안전공사 Electrical measurement meter
KR100816101B1 (en) * 2006-09-26 2008-03-24 (주)김포전력 Apparatus for pinpointing short circuit in live state
KR102656937B1 (en) 2023-11-09 2024-04-12 (주)플루토테크놀로지 Lightning Arrester Grounding Line Leakage Current Measurement Device using Automatic Switching of Measurement Current Section and Noise Removal Technology for Measuring Microcurrent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100802094B1 (en) * 2005-03-18 2008-02-13 한국전기안전공사 Electrical measurement meter
KR100816101B1 (en) * 2006-09-26 2008-03-24 (주)김포전력 Apparatus for pinpointing short circuit in live state
KR102656937B1 (en) 2023-11-09 2024-04-12 (주)플루토테크놀로지 Lightning Arrester Grounding Line Leakage Current Measurement Device using Automatic Switching of Measurement Current Section and Noise Removal Technology for Measuring Microcurrent

Also Published As

Publication number Publication date
KR960005603B1 (en) 1996-04-26
JPH0694758A (en) 1994-04-08
JP3029070B2 (en) 2000-04-04

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