GB694615A - Improvements in and relating to control devices for load carrying electromagnets - Google Patents

Improvements in and relating to control devices for load carrying electromagnets

Info

Publication number
GB694615A
GB694615A GB18494/51A GB1849451A GB694615A GB 694615 A GB694615 A GB 694615A GB 18494/51 A GB18494/51 A GB 18494/51A GB 1849451 A GB1849451 A GB 1849451A GB 694615 A GB694615 A GB 694615A
Authority
GB
United Kingdom
Prior art keywords
contacts
magnet
discharge circuit
relating
control devices
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
GB18494/51A
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Publication of GB694615A publication Critical patent/GB694615A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

694,615. Control systems for electromagnets. TELEMACANIQUE ELECTRIQUE. Aug. 3, 1951 [Dec. 30, 1950], No. 18494/51. Class 38 (iv). [Also in Group XXXVII] In a control system for a lifting magnet E, wherein (a) the magnet is normally energized over switch contacts A1, D2; (b) upon opening of contacts A1 a discharge circuit A2, 8, D2 is provided for the magnet; and (c) operation of a switch having contacts D1, D2 interrupts the discharge circuit and completes a demagnetizing circuit 6, D1, E, A2, 8 to effect release of the load, the contacts D2 are provided with a blowout coil S disposed in the demagnetizing circuit (so that the coil does not have to carry the normal energizing current of the magnet) and a time delay relay is provided for operating the contacts D1, D2 a predetermined time after the closing of the discharge circuit.
GB18494/51A 1950-12-30 1951-08-03 Improvements in and relating to control devices for load carrying electromagnets Expired GB694615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR694615X 1950-12-30

Publications (1)

Publication Number Publication Date
GB694615A true GB694615A (en) 1953-07-22

Family

ID=9045577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18494/51A Expired GB694615A (en) 1950-12-30 1951-08-03 Improvements in and relating to control devices for load carrying electromagnets

Country Status (1)

Country Link
GB (1) GB694615A (en)

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