JPS552963A - Phase rotation detecting circuit for three-phase power supply - Google Patents

Phase rotation detecting circuit for three-phase power supply

Info

Publication number
JPS552963A
JPS552963A JP7618578A JP7618578A JPS552963A JP S552963 A JPS552963 A JP S552963A JP 7618578 A JP7618578 A JP 7618578A JP 7618578 A JP7618578 A JP 7618578A JP S552963 A JPS552963 A JP S552963A
Authority
JP
Japan
Prior art keywords
power supply
differential transformer
phases
thyristors
phase
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
JP7618578A
Other languages
Japanese (ja)
Inventor
Makoto Oota
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 JP7618578A priority Critical patent/JPS552963A/en
Publication of JPS552963A publication Critical patent/JPS552963A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: For stabilizing phase rotation detectin, to connect the series circuit of the thyristors connected in anti-parallel to each other and a relay between desired two phases of three-phase power supply and the series circuit of a resistor and a differential transformer between either of, and the other than, said two phases so that said thyristors may be gated.
CONSTITUTION: The parallel circuit made of the thyristors 5 and 14 connected in antiparallel to each other and a relay are connected between two phases of three power supply, the primary coil winding 15a of a differential transformer 15 between the other than, and a desirable one of, said two phases, and the secondary and tertiary coil windings 15b and 15c of said differential transformer 15 between the gate and cathode of said thyristors 5 and 14 so that the output voltage of said differential transformer 15 may be generated at the zero point of the input voltage of said differential transformer 15.
COPYRIGHT: (C)1980,JPO&Japio
JP7618578A 1978-06-22 1978-06-22 Phase rotation detecting circuit for three-phase power supply Pending JPS552963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7618578A JPS552963A (en) 1978-06-22 1978-06-22 Phase rotation detecting circuit for three-phase power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7618578A JPS552963A (en) 1978-06-22 1978-06-22 Phase rotation detecting circuit for three-phase power supply

Publications (1)

Publication Number Publication Date
JPS552963A true JPS552963A (en) 1980-01-10

Family

ID=13598055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7618578A Pending JPS552963A (en) 1978-06-22 1978-06-22 Phase rotation detecting circuit for three-phase power supply

Country Status (1)

Country Link
JP (1) JPS552963A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5892965A (en) * 1981-11-30 1983-06-02 Matsushita Electric Ind Co Ltd Three phase phase rotation detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5892965A (en) * 1981-11-30 1983-06-02 Matsushita Electric Ind Co Ltd Three phase phase rotation detector

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