JPS5779463A - Internal abnormality detector for electric equipment - Google Patents

Internal abnormality detector for electric equipment

Info

Publication number
JPS5779463A
JPS5779463A JP55156148A JP15614880A JPS5779463A JP S5779463 A JPS5779463 A JP S5779463A JP 55156148 A JP55156148 A JP 55156148A JP 15614880 A JP15614880 A JP 15614880A JP S5779463 A JPS5779463 A JP S5779463A
Authority
JP
Japan
Prior art keywords
temperature
corresponds
signal
short
circuit
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
JP55156148A
Other languages
Japanese (ja)
Inventor
Mamoru Yamada
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing 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 Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP55156148A priority Critical patent/JPS5779463A/en
Publication of JPS5779463A publication Critical patent/JPS5779463A/en
Pending 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
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/302—Contactless testing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Protection Of Transformers (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

PURPOSE:To take a countermeasure to an accident before electric equipment breaks down thermally, by finding an internal fault in its early stage by detecting a rise in the internal temperature of the electrical equipment due to local heat generation through continuous monitoring by infrared-ray irradiation. CONSTITUTION:If the short-circuit part 7 of a mode coil 1 causes a short circuit, the temperature of the short-circuit part 7 rises, so thermal radiation which corresponds to the temperature is performed to radiate infrared rays 8. Those infrared rays 8 are inputted to a heat-sensitive detecting element 2 to be converted into an electric temperature signal which corresponds to its intensity, thereby supplying the signal to an output part 4. The output part 4 has a set temperature signal which corresponds to the upper limit temperature of the mode coil 1 and when an input signal higher than the set temperature signal is applied from an amplification part 3, the occurrence of the internal fault is discriminated. Thus, a necessary countermeasure to an accident is taken accurately before thermal destruction due to the short circuit of the coil 1 occurs.
JP55156148A 1980-11-06 1980-11-06 Internal abnormality detector for electric equipment Pending JPS5779463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55156148A JPS5779463A (en) 1980-11-06 1980-11-06 Internal abnormality detector for electric equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55156148A JPS5779463A (en) 1980-11-06 1980-11-06 Internal abnormality detector for electric equipment

Publications (1)

Publication Number Publication Date
JPS5779463A true JPS5779463A (en) 1982-05-18

Family

ID=15621377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55156148A Pending JPS5779463A (en) 1980-11-06 1980-11-06 Internal abnormality detector for electric equipment

Country Status (1)

Country Link
JP (1) JPS5779463A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001007901A1 (en) * 1999-07-23 2001-02-01 Telcordia Technologies, Inc. Infrared thermographic method for process monitoring and control of multilayer conductive compositions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001007901A1 (en) * 1999-07-23 2001-02-01 Telcordia Technologies, Inc. Infrared thermographic method for process monitoring and control of multilayer conductive compositions

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