JPS54154055A - Malfunction detector of power switching device - Google Patents

Malfunction detector of power switching device

Info

Publication number
JPS54154055A
JPS54154055A JP6296778A JP6296778A JPS54154055A JP S54154055 A JPS54154055 A JP S54154055A JP 6296778 A JP6296778 A JP 6296778A JP 6296778 A JP6296778 A JP 6296778A JP S54154055 A JPS54154055 A JP S54154055A
Authority
JP
Japan
Prior art keywords
voltage
magnetic field
passing
filter
point
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
JP6296778A
Other languages
Japanese (ja)
Inventor
Shiro Fukuda
Osayoshi Imamura
Yoshiaki Ida
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6296778A priority Critical patent/JPS54154055A/en
Publication of JPS54154055A publication Critical patent/JPS54154055A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To discriminate shorted point by operating magnetic field caused by a current flowing through a high voltage conductor and predetermined low magnetic field at an iron core saturated higher than predetermined magnetic field and detecting only the component of the low magnetic field of the voltage inducted in a secondary coil wound on the iron core.
CONSTITUTION: The induced voltage Es of secondary coil when a shortage occurs dut to certain cause between a point D of a metallic container 2-2 and a point C of a conductor 1 and a voltage Efs after passing through a filter 8 become very low at the portion saturated at the voltage Es as shown by g in a view, and the voltage Efs after passing the filter 8 also becomes very low during the zone as shown by h in a view. Accordingly, the shortage occurring position can be clarified by observing the voltage waveform after passing the filter.
COPYRIGHT: (C)1979,JPO&Japio
JP6296778A 1978-05-25 1978-05-25 Malfunction detector of power switching device Pending JPS54154055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6296778A JPS54154055A (en) 1978-05-25 1978-05-25 Malfunction detector of power switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6296778A JPS54154055A (en) 1978-05-25 1978-05-25 Malfunction detector of power switching device

Publications (1)

Publication Number Publication Date
JPS54154055A true JPS54154055A (en) 1979-12-04

Family

ID=13215606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6296778A Pending JPS54154055A (en) 1978-05-25 1978-05-25 Malfunction detector of power switching device

Country Status (1)

Country Link
JP (1) JPS54154055A (en)

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