GB1116705A - Improvements in or relating to the control of electric motors - Google Patents

Improvements in or relating to the control of electric motors

Info

Publication number
GB1116705A
GB1116705A GB1239566A GB1239566A GB1116705A GB 1116705 A GB1116705 A GB 1116705A GB 1239566 A GB1239566 A GB 1239566A GB 1239566 A GB1239566 A GB 1239566A GB 1116705 A GB1116705 A GB 1116705A
Authority
GB
United Kingdom
Prior art keywords
control
motor
relating
electric motors
winding
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
GB1239566A
Inventor
Arthur Thomas Charles Burrows
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.)
Geo W King Ltd
Original Assignee
Geo W King 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 Geo W King Ltd filed Critical Geo W King Ltd
Priority to GB1239566A priority Critical patent/GB1116705A/en
Publication of GB1116705A publication Critical patent/GB1116705A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/22—Control systems or devices for electric drives
    • B66C13/23—Circuits for controlling the lowering of the load
    • B66C13/26—Circuits for controlling the lowering of the load by ac motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/081—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists with ac motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

1,116,705. Control of A.C. motors. G. W. KING Ltd. 10 March, 1967 [21 March, 1966], No. 12395/66. Heading H2J. A hoist motor 1 has separate high and low speed windings and an electromechanical brake winding 2 which, when either motor winding is fully energized, is energized in series with the other motor winding, the current through it being insufficient to influence the motor. Speed is selected by push button contacts 6, slight and heavy pressure being used to obtain low and high speed respectively.
GB1239566A 1966-03-21 1966-03-21 Improvements in or relating to the control of electric motors Expired GB1116705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1239566A GB1116705A (en) 1966-03-21 1966-03-21 Improvements in or relating to the control of electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1239566A GB1116705A (en) 1966-03-21 1966-03-21 Improvements in or relating to the control of electric motors

Publications (1)

Publication Number Publication Date
GB1116705A true GB1116705A (en) 1968-06-12

Family

ID=10003793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239566A Expired GB1116705A (en) 1966-03-21 1966-03-21 Improvements in or relating to the control of electric motors

Country Status (1)

Country Link
GB (1) GB1116705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631298A1 (en) * 1986-09-13 1988-03-24 Rolf Gnauert Reversible pole three-phase motor for underground operation, especially a squirrel-cage rotor motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631298A1 (en) * 1986-09-13 1988-03-24 Rolf Gnauert Reversible pole three-phase motor for underground operation, especially a squirrel-cage rotor motor

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