JPS57179761A - Test method for dc leak current of electric device - Google Patents

Test method for dc leak current of electric device

Info

Publication number
JPS57179761A
JPS57179761A JP56066604A JP6660481A JPS57179761A JP S57179761 A JPS57179761 A JP S57179761A JP 56066604 A JP56066604 A JP 56066604A JP 6660481 A JP6660481 A JP 6660481A JP S57179761 A JPS57179761 A JP S57179761A
Authority
JP
Japan
Prior art keywords
converter
leak current
current
light volume
constitution
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
JP56066604A
Other languages
Japanese (ja)
Other versions
JPH0140956B2 (en
Inventor
Susumu Shimokuchi
Akio Miura
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.)
DAINICHI NIPPON DENSEN KK
Dainichi Nippon Cables Ltd
Original Assignee
DAINICHI NIPPON DENSEN KK
Dainichi Nippon Cables 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 DAINICHI NIPPON DENSEN KK, Dainichi Nippon Cables Ltd filed Critical DAINICHI NIPPON DENSEN KK
Priority to JP56066604A priority Critical patent/JPS57179761A/en
Publication of JPS57179761A publication Critical patent/JPS57179761A/en
Publication of JPH0140956B2 publication Critical patent/JPH0140956B2/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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

Landscapes

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

Abstract

PURPOSE:To measure leak current without receiving an effect of high voltage- ground current, by inserting an electrooptic converter to the high voltage side and converting the leak current amount into the light volume to be measured after converting the light volume into the current amount through a photoelectric converter via an optical guide. CONSTITUTION:A protecting resistance 12 is provided to prevent flowing of a large current in case a test cable 1 has a short circuit. The impedance of the resistance 12 is set larger than that of an electrooptic converter 5. As a result, only the leak current of a cable insulator flows through the converter 5 to be converted into the light volume and then transmitted to a photoelectric converter 6 via an optical guide 7. The output of the converter 6 corresponding to the leak current is recorded to a recorder 8. In such constitution, the measuring circuit system is cut off from the power supply voltage by the converter 5. As a result, the complicatedness of a measuring circuit system and the difficulty of the measuring operation can be eliminated.
JP56066604A 1981-04-30 1981-04-30 Test method for dc leak current of electric device Granted JPS57179761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56066604A JPS57179761A (en) 1981-04-30 1981-04-30 Test method for dc leak current of electric device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56066604A JPS57179761A (en) 1981-04-30 1981-04-30 Test method for dc leak current of electric device

Publications (2)

Publication Number Publication Date
JPS57179761A true JPS57179761A (en) 1982-11-05
JPH0140956B2 JPH0140956B2 (en) 1989-09-01

Family

ID=13320671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56066604A Granted JPS57179761A (en) 1981-04-30 1981-04-30 Test method for dc leak current of electric device

Country Status (1)

Country Link
JP (1) JPS57179761A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161069A (en) * 1984-08-31 1986-03-28 Toyota Motor Corp Automatic diagnosing device for insulation performance of power cable
JPS61187670A (en) * 1985-02-15 1986-08-21 Showa Electric Wire & Cable Co Ltd Apparatus for testing insulation of power cable
JPH02173579A (en) * 1988-12-27 1990-07-05 Showa Electric Wire & Cable Co Ltd Deciding method for insulation deterioration

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50158367A (en) * 1974-06-10 1975-12-22
JPS5746169A (en) * 1980-09-05 1982-03-16 Showa Electric Wire & Cable Co Ltd Method for measuring leaking dc current from cable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50158367A (en) * 1974-06-10 1975-12-22
JPS5746169A (en) * 1980-09-05 1982-03-16 Showa Electric Wire & Cable Co Ltd Method for measuring leaking dc current from cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161069A (en) * 1984-08-31 1986-03-28 Toyota Motor Corp Automatic diagnosing device for insulation performance of power cable
JPS61187670A (en) * 1985-02-15 1986-08-21 Showa Electric Wire & Cable Co Ltd Apparatus for testing insulation of power cable
JPH02173579A (en) * 1988-12-27 1990-07-05 Showa Electric Wire & Cable Co Ltd Deciding method for insulation deterioration

Also Published As

Publication number Publication date
JPH0140956B2 (en) 1989-09-01

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