JPS552935A - Phase rotation detector - Google Patents
Phase rotation detectorInfo
- Publication number
- JPS552935A JPS552935A JP7573378A JP7573378A JPS552935A JP S552935 A JPS552935 A JP S552935A JP 7573378 A JP7573378 A JP 7573378A JP 7573378 A JP7573378 A JP 7573378A JP S552935 A JPS552935 A JP S552935A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- terminal
- emitting diodes
- terminals
- light
- 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 securing sufficient overall accuracy and saving parts and assembly costs, to ignite at a specified time the first and second phase control type rectifier devices provided between given first power supply terminals.
CONSTITUTION: The two complex devices made by optically interconnecting light- emitting diodes 14b and 15b and photo SCR's 14a and 15a are connected in anti- parallel to each other. The series circuit of said complex devices 14 and 15 and a relay 3 is connected between the first and third terminals for three-phase power supply. Current is supplied to said light-emitting diodes 14b and 15b in synchronization with the zero point of the voltage between a second terminal and said third terminal for said three-phase power supply.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7573378A JPS552935A (en) | 1978-06-21 | 1978-06-21 | Phase rotation detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7573378A JPS552935A (en) | 1978-06-21 | 1978-06-21 | Phase rotation detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS552935A true JPS552935A (en) | 1980-01-10 |
Family
ID=13584760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7573378A Pending JPS552935A (en) | 1978-06-21 | 1978-06-21 | Phase rotation detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS552935A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6378582U (en) * | 1986-11-08 | 1988-05-24 | ||
JPS63107171U (en) * | 1986-12-27 | 1988-07-11 |
-
1978
- 1978-06-21 JP JP7573378A patent/JPS552935A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6378582U (en) * | 1986-11-08 | 1988-05-24 | ||
JPS63107171U (en) * | 1986-12-27 | 1988-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52143713A (en) | Convergence unit | |
JPS552935A (en) | Phase rotation detector | |
JPS5361023A (en) | Thyristor converter | |
JPS52146829A (en) | Current type inverter | |
JPS52131139A (en) | Three phase ac voltage control circuit | |
JPS5529290A (en) | Emergency three-phase ac power supply | |
JPS552937A (en) | Phase rotation detector | |
JPS5445739A (en) | Inverter divece | |
JPS5435324A (en) | Inverter | |
JPS5568898A (en) | Inverter for synchronous motor | |
JPS5213627A (en) | D-c power source | |
JPS5395214A (en) | Synchronous machine | |
JPS52156345A (en) | Protecting dc power transmission line | |
JPS5330761A (en) | Controlling power converter of reactive power compensation type | |
JPS55104132A (en) | Interface circuit | |
JPS53128737A (en) | Ac power supply system | |
JPS559272A (en) | Great and constant current power supply system with high speed response | |
JPS52135040A (en) | Three-phase ac voltage control circuit | |
JPS54122840A (en) | Control system for ganged system | |
JPS53103138A (en) | Thyristor fault detector | |
JPS53115016A (en) | Dc excitation system for induction synchronous motor | |
JPS5342347A (en) | Constant voltage power source | |
JPS5436533A (en) | Rectifier | |
JPS52120352A (en) | Voltage divider protection circuit for series connected semiconductor rectifier element | |
JPS5347925A (en) | Inverter overvoltage protection system |