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GB817565A - A quick-response holding magnet particularly for electrical switchgear - Google Patents

A quick-response holding magnet particularly for electrical switchgear

Info

Publication number
GB817565A
GB817565A GB2890557A GB2890557A GB817565A GB 817565 A GB817565 A GB 817565A GB 2890557 A GB2890557 A GB 2890557A GB 2890557 A GB2890557 A GB 2890557A GB 817565 A GB817565 A GB 817565A
Authority
GB
United Kingdom
Prior art keywords
armature
quick
tripping
holding magnet
electrical switchgear
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
GB2890557A
Inventor
Franz Stockl
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.)
Optische Anstalt Cp Goerz GmbH
Original Assignee
Optische Anstalt Cp Goerz GmbH
Filing date
Publication date
Priority to DEO5229A priority Critical patent/DE1059093B/en
Application filed by Optische Anstalt Cp Goerz GmbH filed Critical Optische Anstalt Cp Goerz GmbH
Priority to US687200A priority patent/US2897415A/en
Publication of GB817565A publication Critical patent/GB817565A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/10—Contacts retained open or closed by a latch which is controlled by an electromagnet
    • 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
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Non-Mechanical Conveyors (AREA)

Abstract

817,565. Electromagnets. OPTISCHE ANSTALT C.P. GOERZ G.m.b.H. Sept. 13, 1957, No. 28905/57. Class 35. [Also in Group XXXVII] A magnetic trip comprises two laminated frames 2, 2<SP>1</SP> separated by a layer 3 of non- magnetic material and bridged at their lower sides by a permanent or electromagnet 5 and at their upper sides by an armature 6. A tripping current passing in either direction through the operating coils 7, 8 releases the armature which is lifted by a spring (not shown). The armature is re-set by external means. More than two operating coil-carrying arms may be provided on the frames, each arm carrying independent coils to allow tripping only on the passage of simultaneous tripping currents.
GB2890557A 1955-12-30 1957-09-13 A quick-response holding magnet particularly for electrical switchgear Expired GB817565A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEO5229A DE1059093B (en) 1955-12-30 1956-12-04 Holding magnet protection relay
US687200A US2897415A (en) 1957-09-13 1957-09-30 Holding magnet system

Publications (1)

Publication Number Publication Date
GB817565A true GB817565A (en) 1959-07-29

Family

ID=1741331

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2890557A Expired GB817565A (en) 1955-12-30 1957-09-13 A quick-response holding magnet particularly for electrical switchgear

Country Status (1)

Country Link
GB (1) GB817565A (en)

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