JPS57120102A - Control circuit - Google Patents

Control circuit

Info

Publication number
JPS57120102A
JPS57120102A JP519881A JP519881A JPS57120102A JP S57120102 A JPS57120102 A JP S57120102A JP 519881 A JP519881 A JP 519881A JP 519881 A JP519881 A JP 519881A JP S57120102 A JPS57120102 A JP S57120102A
Authority
JP
Japan
Prior art keywords
contact
service interruption
timer
turned
energized
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
JP519881A
Other languages
Japanese (ja)
Inventor
Yoshihiro Yamashita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP519881A priority Critical patent/JPS57120102A/en
Publication of JPS57120102A publication Critical patent/JPS57120102A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • H02P1/32—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by star/delta switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE:To prevent the plant trip caused by a service interruption and to increase the reliability of a plant, by starting the full voltage after an instantaneous service interruption is recovered for a motor which is driven by a starting system with reduction of voltage. CONSTITUTION:A delta starting contact device 10 is turned into a latch type contact device. As a result, the device 10 having its working coil energized after the set time of a start delta timer 7 maintains the delta connection unless a reset coil is energized. The reset coil of the device 10 is energized with the resetting of an auxiliary contact 15 of a main contact device 3 and a contact 16 of a timer 12 to be reset to the original state. And the contact 15 is turned on during an instantaneous service interruption, and the contact 16 is turned off in an instantaneous service interruption within the set time of the timer 12. As a result, the device 10 maintains its working state, and the full voltage is started after the power supply is recovered.
JP519881A 1981-01-19 1981-01-19 Control circuit Pending JPS57120102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP519881A JPS57120102A (en) 1981-01-19 1981-01-19 Control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP519881A JPS57120102A (en) 1981-01-19 1981-01-19 Control circuit

Publications (1)

Publication Number Publication Date
JPS57120102A true JPS57120102A (en) 1982-07-27

Family

ID=11604501

Family Applications (1)

Application Number Title Priority Date Filing Date
JP519881A Pending JPS57120102A (en) 1981-01-19 1981-01-19 Control circuit

Country Status (1)

Country Link
JP (1) JPS57120102A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110315A (en) * 1974-07-15 1976-01-27 Mitsubishi Electric Corp Kaitendenkino kidosochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110315A (en) * 1974-07-15 1976-01-27 Mitsubishi Electric Corp Kaitendenkino kidosochi

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