JPS5458808A - Squiprel-cage rotor conductor breakage detector - Google Patents

Squiprel-cage rotor conductor breakage detector

Info

Publication number
JPS5458808A
JPS5458808A JP12624977A JP12624977A JPS5458808A JP S5458808 A JPS5458808 A JP S5458808A JP 12624977 A JP12624977 A JP 12624977A JP 12624977 A JP12624977 A JP 12624977A JP S5458808 A JPS5458808 A JP S5458808A
Authority
JP
Japan
Prior art keywords
rotor conductor
phase
difference
instantaneous value
voltage
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.)
Granted
Application number
JP12624977A
Other languages
Japanese (ja)
Other versions
JPS5734736B2 (en
Inventor
Takashi Toda
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing Co Ltd
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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP12624977A priority Critical patent/JPS5458808A/en
Publication of JPS5458808A publication Critical patent/JPS5458808A/en
Publication of JPS5734736B2 publication Critical patent/JPS5734736B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Induction Machinery (AREA)

Abstract

PURPOSE: To detect the breakage of a rotor conductor irrespective of the distortion of applied voltage and its unbalance by detecting the difference of an instantaneous value owing to the phase difference in two winding currents a single phase component parallel winding.
CONSTITUTION: For 1-phase 3-parallel windings A1 to A3, CT1 and CT2 are set set up and the difference of an instantaneous value owing to the phase difference in the A1 and A2 currents. When a rotor conductor rotates normally, voltage breakdown is also equal since both the size and the phase of the output current in both current transformers are matched. Accordingly, there is no voltage between the cathode and the gate of a control rectifier element TR1 and TR1 is OFF. When breakage occurs in the rotor conductor, the magnetic flux intersection of a parallel circuit differs in A1 and A2 and the instantaneous value of the current is different. As a result, the voltage breakdown of R1 and R2 differs and the rectifier element TR1 turns ON. Moreover, a relay RY can be operated and the breakage detection signal of the rotor conductor be obtained
COPYRIGHT: (C)1979,JPO&Japio
JP12624977A 1977-10-19 1977-10-19 Squiprel-cage rotor conductor breakage detector Granted JPS5458808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12624977A JPS5458808A (en) 1977-10-19 1977-10-19 Squiprel-cage rotor conductor breakage detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12624977A JPS5458808A (en) 1977-10-19 1977-10-19 Squiprel-cage rotor conductor breakage detector

Publications (2)

Publication Number Publication Date
JPS5458808A true JPS5458808A (en) 1979-05-11
JPS5734736B2 JPS5734736B2 (en) 1982-07-24

Family

ID=14930487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12624977A Granted JPS5458808A (en) 1977-10-19 1977-10-19 Squiprel-cage rotor conductor breakage detector

Country Status (1)

Country Link
JP (1) JPS5458808A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141761A (en) * 1980-04-03 1981-11-05 Yamabishi Denki Kk Throuble shooting system for induction motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141761A (en) * 1980-04-03 1981-11-05 Yamabishi Denki Kk Throuble shooting system for induction motor

Also Published As

Publication number Publication date
JPS5734736B2 (en) 1982-07-24

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