JPS56158966A - Method and circuit for measuring opening time difference of breaker - Google Patents

Method and circuit for measuring opening time difference of breaker

Info

Publication number
JPS56158966A
JPS56158966A JP6219780A JP6219780A JPS56158966A JP S56158966 A JPS56158966 A JP S56158966A JP 6219780 A JP6219780 A JP 6219780A JP 6219780 A JP6219780 A JP 6219780A JP S56158966 A JPS56158966 A JP S56158966A
Authority
JP
Japan
Prior art keywords
contactor
opening time
current
detector
difference
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
JP6219780A
Other languages
Japanese (ja)
Inventor
Yutaka Senda
Minoru Sato
Katsuichi Kashimura
Takeshi Hashimoto
Masao Hosokawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6219780A priority Critical patent/JPS56158966A/en
Publication of JPS56158966A publication Critical patent/JPS56158966A/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
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272—Apparatus, systems or circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Keying Circuit Devices (AREA)

Abstract

PURPOSE:To measure a difference in opening time efficiently by coupling an AC power source electromagnetically with the closed circuit consisting of a main contactor, making resistor and auxiliary contactor. CONSTITUTION:With the series circuit of a resistor 2A and contactor 3A of the closed circuit 4A including a main contactor 1A, making resistor 2A and the auxiliary contactor 3A, two current transformers 11A and 12A are coupled electromagnetically. One transformer 11A has an AC power source 13A, and the other transformer 12A a current detector 15A. In breaking operation, the auxiliary contactor 3A opens first to cease the current of the detector 15A. Next, when the main contactor 1A opens, the current of the detector 7A disappears. An opening time difference is therefore measured by the difference in detection time between two detectors. Thus, the measurement is taken with the assembly completed, so that the measuring operation will be performed efficiently.
JP6219780A 1980-05-13 1980-05-13 Method and circuit for measuring opening time difference of breaker Pending JPS56158966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6219780A JPS56158966A (en) 1980-05-13 1980-05-13 Method and circuit for measuring opening time difference of breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6219780A JPS56158966A (en) 1980-05-13 1980-05-13 Method and circuit for measuring opening time difference of breaker

Publications (1)

Publication Number Publication Date
JPS56158966A true JPS56158966A (en) 1981-12-08

Family

ID=13193174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6219780A Pending JPS56158966A (en) 1980-05-13 1980-05-13 Method and circuit for measuring opening time difference of breaker

Country Status (1)

Country Link
JP (1) JPS56158966A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104459523A (en) * 2014-06-30 2015-03-25 国家电网公司 10 kV vacuum circuit breaker opening time on-load automatic testing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104459523A (en) * 2014-06-30 2015-03-25 国家电网公司 10 kV vacuum circuit breaker opening time on-load automatic testing method

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