JPS56128464A - Spark tester for electric wire - Google Patents

Spark tester for electric wire

Info

Publication number
JPS56128464A
JPS56128464A JP2529080A JP2529080A JPS56128464A JP S56128464 A JPS56128464 A JP S56128464A JP 2529080 A JP2529080 A JP 2529080A JP 2529080 A JP2529080 A JP 2529080A JP S56128464 A JPS56128464 A JP S56128464A
Authority
JP
Japan
Prior art keywords
circuit
charging current
electric wire
output
detecting
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP2529080A
Other languages
Japanese (ja)
Other versions
JPS6234109B2 (en
Inventor
Hitoshi Sugome
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
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.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP2529080A priority Critical patent/JPS56128464A/en
Publication of JPS56128464A publication Critical patent/JPS56128464A/en
Publication of JPS6234109B2 publication Critical patent/JPS6234109B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

PURPOSE:To shorten the time of response for detection of a defective insulation of the electric wire to be tested, by comparing the change component of the charging current with the reference voltage which is set according to the test voltage. CONSTITUTION:A detecting means including the reference circuit 11, detecting circuit 12 and comparator 14 is important. The circuit 11 produces an output of I=KE+C (K>=0, C>=0) to the test voltage E. The circuit 12 consists of a charging current DC converting circuit 18, charging current storage circuit 20 which performs a sampling storage and substractor circuit 22 which calculates the difference of outputs between the circuits 18 and 20. Thus the change component of the charging current is delivered from these circuits and then compared with the reference value through the circuit 14. And in case the output of detection is larger than the reference value, the control output circuit 24 is actuated. In such way, a malfunction can be eliminated for the detecting action. Then the time of response is reduced to increase the sensitivity greatly.
JP2529080A 1980-03-03 1980-03-03 Spark tester for electric wire Granted JPS56128464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2529080A JPS56128464A (en) 1980-03-03 1980-03-03 Spark tester for electric wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2529080A JPS56128464A (en) 1980-03-03 1980-03-03 Spark tester for electric wire

Publications (2)

Publication Number Publication Date
JPS56128464A true JPS56128464A (en) 1981-10-07
JPS6234109B2 JPS6234109B2 (en) 1987-07-24

Family

ID=12161879

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2529080A Granted JPS56128464A (en) 1980-03-03 1980-03-03 Spark tester for electric wire

Country Status (1)

Country Link
JP (1) JPS56128464A (en)

Also Published As

Publication number Publication date
JPS6234109B2 (en) 1987-07-24

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