JPS552963A - Phase rotation detecting circuit for three-phase power supply - Google Patents
Phase rotation detecting circuit for three-phase power supplyInfo
- 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
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
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
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)
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 |
-
1978
- 1978-06-22 JP JP7618578A patent/JPS552963A/en active Pending
Cited By (1)
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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