GB544787A - Improvements in or relating to electric motor control systems - Google Patents

Improvements in or relating to electric motor control systems

Info

Publication number
GB544787A
GB544787A GB16618/40A GB1661840A GB544787A GB 544787 A GB544787 A GB 544787A GB 16618/40 A GB16618/40 A GB 16618/40A GB 1661840 A GB1661840 A GB 1661840A GB 544787 A GB544787 A GB 544787A
Authority
GB
United Kingdom
Prior art keywords
motor
nov
stage
wire
contactors
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.)
Expired
Application number
GB16618/40A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic 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 Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Publication of GB544787A publication Critical patent/GB544787A/en
Expired 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
    • H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
    • H02P1/20—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor by progressive reduction of resistance in series with armature winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Motor And Converter Starters (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

544,787. Master control of motors. IGRANIC ELECTRIC CO., Ltd. Nov. 18, 1940, No. 16618. Convention date, Nov. 18, 1939. Drawings to Specification. [Class 38 (iii)] A motor is accelerated by sequentially operated contactors, the time interval between the closures of which is reduced if the motor fails to start. Movement of a master switch to an " on " position energises the operating coils of the contactors, and as each closes, interlocks thereon open the circuit of a restraining coil on the next contactor, this coil normally, discharges slowly through a resistor and a capacitor. If the motor has failed to start, a voltage responsive relay across the armature fails to operate and leaves another resistor connected across the next restraining coil so as to discharge it quickly and so allow the next contactor to close quickly. This method of control when applied to a motor driving a wire-drawing machine reduces the time of threading the wire stage by stage.
GB16618/40A 1939-11-18 1940-11-18 Improvements in or relating to electric motor control systems Expired GB544787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US544787XA 1939-11-18 1939-11-18

Publications (1)

Publication Number Publication Date
GB544787A true GB544787A (en) 1942-04-28

Family

ID=21991361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16618/40A Expired GB544787A (en) 1939-11-18 1940-11-18 Improvements in or relating to electric motor control systems

Country Status (1)

Country Link
GB (1) GB544787A (en)

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