EP0771018A3 - Magnetic actuator arrangement - Google Patents

Magnetic actuator arrangement Download PDF

Info

Publication number
EP0771018A3
EP0771018A3 EP96307626A EP96307626A EP0771018A3 EP 0771018 A3 EP0771018 A3 EP 0771018A3 EP 96307626 A EP96307626 A EP 96307626A EP 96307626 A EP96307626 A EP 96307626A EP 0771018 A3 EP0771018 A3 EP 0771018A3
Authority
EP
European Patent Office
Prior art keywords
armature
bushes
spindle
magnetic actuator
actuator arrangement
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.)
Withdrawn
Application number
EP96307626A
Other languages
German (de)
French (fr)
Other versions
EP0771018A2 (en
Inventor
Gordon James Rushton
Brian Walter George Heel
Leslie Thomas Falkingham
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.)
GE Power UK
Original Assignee
GEC Alsthom 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 GEC Alsthom Ltd filed Critical GEC Alsthom Ltd
Publication of EP0771018A2 publication Critical patent/EP0771018A2/en
Publication of EP0771018A3 publication Critical patent/EP0771018A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H01H50/305—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature damping vibration due to functional movement of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Electromagnets (AREA)

Abstract

A magnetic actuator arrangement, principally for a vacuum switching apparatus, employs, instead of precision ball-joint bearings (16) supporting the armature (14), simple bushes (40) with an inside diameter deliberately greater than the outside diameter of the armature spindle (15), such that the armature (14) is a loose fit inside the bushes (40). The effect of this is to enable the armature (14) to make non-rotational movements in the plane perpendicular to the spindle (15), and so automatically to assume a properly seated position with respect to the pole pieces (21, 22) of the magnets (10, 11) when the latter are energised, thereby eliminating an undesirable vibration at the magnet-armature interface. With conventional bearings having negligible play, this can only be done after time-consuming manual adjustment of the bearing locations by skilled technical personnel.
EP96307626A 1995-10-25 1996-10-21 Magnetic actuator arrangement Withdrawn EP0771018A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9521822A GB2306788B (en) 1995-10-25 1995-10-25 Magnetic actuator arrangement
GB9521822 1995-10-25

Publications (2)

Publication Number Publication Date
EP0771018A2 EP0771018A2 (en) 1997-05-02
EP0771018A3 true EP0771018A3 (en) 1998-08-19

Family

ID=10782870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96307626A Withdrawn EP0771018A3 (en) 1995-10-25 1996-10-21 Magnetic actuator arrangement

Country Status (2)

Country Link
EP (1) EP0771018A3 (en)
GB (1) GB2306788B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB359420A (en) * 1930-07-21 1931-10-21 Allen West & Co Ltd Improvements in or relating to electromagnetic switches
US2891200A (en) * 1954-08-27 1959-06-16 Carpenter Rupert Evan Howard Electromagnetic relays

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB359420A (en) * 1930-07-21 1931-10-21 Allen West & Co Ltd Improvements in or relating to electromagnetic switches
US2891200A (en) * 1954-08-27 1959-06-16 Carpenter Rupert Evan Howard Electromagnetic relays

Also Published As

Publication number Publication date
GB2306788B (en) 2000-04-26
GB2306788A (en) 1997-05-07
EP0771018A2 (en) 1997-05-02
GB9521822D0 (en) 1996-01-03

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