JPS552935A - Phase rotation detector - Google Patents

Phase rotation detector

Info

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
Application number
JP7573378A
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 JP7573378A priority Critical patent/JPS552935A/en
Publication of JPS552935A publication Critical patent/JPS552935A/en
Pending legal-status Critical Current

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  • 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
JP7573378A 1978-06-21 1978-06-21 Phase rotation detector Pending JPS552935A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6378582U (en) * 1986-11-08 1988-05-24
JPS63107171U (en) * 1986-12-27 1988-07-11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6378582U (en) * 1986-11-08 1988-05-24
JPS63107171U (en) * 1986-12-27 1988-07-11

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