JPS56101562A - Insulation resistance measuring method and device thereof of dc electric circuit in use - Google Patents

Insulation resistance measuring method and device thereof of dc electric circuit in use

Info

Publication number
JPS56101562A
JPS56101562A JP348080A JP348080A JPS56101562A JP S56101562 A JPS56101562 A JP S56101562A JP 348080 A JP348080 A JP 348080A JP 348080 A JP348080 A JP 348080A JP S56101562 A JPS56101562 A JP S56101562A
Authority
JP
Japan
Prior art keywords
resistors
circuit
voltage
insulation resistance
measuring method
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.)
Pending
Application number
JP348080A
Other languages
Japanese (ja)
Inventor
Hatsuo Tsujimura
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.)
JAPANESE NATIONAL RAILWAYS<JNR>
Japan National Railways
Original Assignee
JAPANESE NATIONAL RAILWAYS<JNR>
Japan National Railways
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 JAPANESE NATIONAL RAILWAYS<JNR>, Japan National Railways filed Critical JAPANESE NATIONAL RAILWAYS<JNR>
Priority to JP348080A priority Critical patent/JPS56101562A/en
Publication of JPS56101562A publication Critical patent/JPS56101562A/en
Pending legal-status Critical Current

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
    • G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE:To measure an insulation resistance safely and surely by a method wherein two resistors having different resistance values and being feasible to change-over are inserted between an earthing pole and a measuring point which is in use or is applied with voltage and a leak voltage is measured. CONSTITUTION:A circuit wherein a voltmeter V is in parallel connected to a parallel circuit of change-over feasible substitution resistors R1, R2, is connected at an optional point between an power source E1 and a load L and this circuit is earthed. At this time, the substitution resistors R1 and R2 shall have different resistance values respectively. The leak voltate at this time is measured through a voltmeter V1 and based on the actual voltage, a deviation value is operated and an actual resistance value of the insulated resistor can be determined by a conversion curve.
JP348080A 1980-01-18 1980-01-18 Insulation resistance measuring method and device thereof of dc electric circuit in use Pending JPS56101562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP348080A JPS56101562A (en) 1980-01-18 1980-01-18 Insulation resistance measuring method and device thereof of dc electric circuit in use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP348080A JPS56101562A (en) 1980-01-18 1980-01-18 Insulation resistance measuring method and device thereof of dc electric circuit in use

Publications (1)

Publication Number Publication Date
JPS56101562A true JPS56101562A (en) 1981-08-14

Family

ID=11558494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP348080A Pending JPS56101562A (en) 1980-01-18 1980-01-18 Insulation resistance measuring method and device thereof of dc electric circuit in use

Country Status (1)

Country Link
JP (1) JPS56101562A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277787A (en) * 2015-09-30 2016-01-27 上海凌翼动力科技有限公司 Method and system for predicting insulation resistor fault of electric car

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5540939A (en) * 1978-09-15 1980-03-22 Matsushita Electric Works Ltd Impedance measuring unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5540939A (en) * 1978-09-15 1980-03-22 Matsushita Electric Works Ltd Impedance measuring unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277787A (en) * 2015-09-30 2016-01-27 上海凌翼动力科技有限公司 Method and system for predicting insulation resistor fault of electric car

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