GB1055034A - Electrical control circuit arrangement for lifting-magnets - Google Patents

Electrical control circuit arrangement for lifting-magnets

Info

Publication number
GB1055034A
GB1055034A GB444564A GB444564A GB1055034A GB 1055034 A GB1055034 A GB 1055034A GB 444564 A GB444564 A GB 444564A GB 444564 A GB444564 A GB 444564A GB 1055034 A GB1055034 A GB 1055034A
Authority
GB
United Kingdom
Prior art keywords
winding
magnet
rectifier
contactors
lifting
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
GB444564A
Inventor
Paul Truninger
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.)
Truninger AG
Original Assignee
Truninger AG
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 Truninger AG filed Critical Truninger AG
Priority to GB444564A priority Critical patent/GB1055034A/en
Publication of GB1055034A publication Critical patent/GB1055034A/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
    • 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
    • B66C2700/087—Electrical assemblies or electrical control devices for electrically actuated grabs

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

1,055,034. Control systems for lifting magnets. TRUNINGER A.G. Feb. 3. 1964. 4445/64. Heading H2H. A system for controlling the energization of a lifting magnet has the winding 10 of the magnet permanently connected to the output of a rectifier 4 supplied from a three-phase source over a main switch 1 and a contactor 2. Reverse energization of the winding 10 is provided by a transformer 12 and rectifier 18. When it is desired to drop the load on the magnet contactors 2 and 11 are opened and contactors 16 closed. The collapse of the magnetic flux in the winding 10 produces a voltage which bucks the voltage from the rectifier 18 so that initially a relay coil 21 remains de-energized. As the voltage due to the collapse of the flux decreases the relay coil 21 becomes energized to close contacts 24 thereby applying reverse energization to the magnet winding 10. When the reverse energization reaches a predetermined value a relay 8 is energized sufficiently to cause its contacts to make thus to effect opening of contactors 16 so switching off the reverse energization of the winding 10. The pull-in point of relay 8 may be adjusted by means of a variable resistor 28.
GB444564A 1964-02-03 1964-02-03 Electrical control circuit arrangement for lifting-magnets Expired GB1055034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB444564A GB1055034A (en) 1964-02-03 1964-02-03 Electrical control circuit arrangement for lifting-magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB444564A GB1055034A (en) 1964-02-03 1964-02-03 Electrical control circuit arrangement for lifting-magnets

Publications (1)

Publication Number Publication Date
GB1055034A true GB1055034A (en) 1967-01-11

Family

ID=9777317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB444564A Expired GB1055034A (en) 1964-02-03 1964-02-03 Electrical control circuit arrangement for lifting-magnets

Country Status (1)

Country Link
GB (1) GB1055034A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143696A (en) * 1983-07-18 1985-02-13 Pt Components Inc Operating coil control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143696A (en) * 1983-07-18 1985-02-13 Pt Components Inc Operating coil control system

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