JPS5631382A - Controller for starting of induction motor - Google Patents

Controller for starting of induction motor

Info

Publication number
JPS5631382A
JPS5631382A JP10507479A JP10507479A JPS5631382A JP S5631382 A JPS5631382 A JP S5631382A JP 10507479 A JP10507479 A JP 10507479A JP 10507479 A JP10507479 A JP 10507479A JP S5631382 A JPS5631382 A JP S5631382A
Authority
JP
Japan
Prior art keywords
revolution
motor
starting
resistor
value
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
JP10507479A
Other languages
Japanese (ja)
Inventor
Tomosaburo Takeuchi
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.)
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Electric Manufacturing 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 Toyo Electric Manufacturing Ltd filed Critical Toyo Electric Manufacturing Ltd
Priority to JP10507479A priority Critical patent/JPS5631382A/en
Publication of JPS5631382A publication Critical patent/JPS5631382A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed

Landscapes

  • Motor And Converter Starters (AREA)

Abstract

PURPOSE:To prevent an abnormal high speed condition at a starting process due to the unbalance of load torque by a mechanism wherein the number of revolution of a wound-rotor induction motor is detected, a contactor is operated when the value exceeds the set value, and a secondary resistor is short-circuited. CONSTITUTION:A secondary resistro 9 is mounted at the secondary side of a motor 1 while contactors MC1-MC3 are installed which short-circuit the resistance value of the resistor 9 in the reducing direction when starting. The number of revolution of the motor 1 is detected by means of a revolution number detector 11 such as a speed generator, the contactor MC3 is energized through a judging circuit 12 and a drive circuit 13 when the value exceeds the set value, and the resistance value of the secondary resistor 9 is made to zero. Thereby, an abnormal high speed condition is avoided on the basis of the unbalance of load torque at a starting process in the case when driving a lifting gear, etc. lifting and lowering a carrier 6 through a chain gear 3 and a chain 4 by means of the motor 1, and the revolution can be controlled to a synchronous speed extent.
JP10507479A 1979-08-20 1979-08-20 Controller for starting of induction motor Pending JPS5631382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10507479A JPS5631382A (en) 1979-08-20 1979-08-20 Controller for starting of induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10507479A JPS5631382A (en) 1979-08-20 1979-08-20 Controller for starting of induction motor

Publications (1)

Publication Number Publication Date
JPS5631382A true JPS5631382A (en) 1981-03-30

Family

ID=14397788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10507479A Pending JPS5631382A (en) 1979-08-20 1979-08-20 Controller for starting of induction motor

Country Status (1)

Country Link
JP (1) JPS5631382A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05311504A (en) * 1991-08-29 1993-11-22 Japan Small Corp Device for continuously and transversely boiling raw silk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05311504A (en) * 1991-08-29 1993-11-22 Japan Small Corp Device for continuously and transversely boiling raw silk

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