GB479621A - Improvements in and relating to electromagnetic control devices for circuit interrupters and switches - Google Patents

Improvements in and relating to electromagnetic control devices for circuit interrupters and switches

Info

Publication number
GB479621A
GB479621A GB28276/36A GB2827636A GB479621A GB 479621 A GB479621 A GB 479621A GB 28276/36 A GB28276/36 A GB 28276/36A GB 2827636 A GB2827636 A GB 2827636A GB 479621 A GB479621 A GB 479621A
Authority
GB
United Kingdom
Prior art keywords
coil
gap
contact
core
relating
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
GB28276/36A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB479621A publication Critical patent/GB479621A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7007—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein the flow is a function of the current being interrupted

Landscapes

  • Breakers (AREA)
  • Electromagnets (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

479,621. Electromagnets. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 17, 1936, No. 28276. Convention date, Oct. 17, 1935. [Class 35] [Also in Group XXXVII] An electromagnet core 10 of soft-iron laminations comprises a readily - saturable part 13 of small crosssection, and a part 14 of large cross-section having an air-gap 14<1>. A coil 15 embracing a limb of the core is mounted on an insulated rod 17 slidable in the core and carrying a contact 18. With low currents in the coil the flux is confined to the path 13 and does not traverse the gap, and the coil is consequently moved so that contact 18 closes the circuit of a minimum-current indicator G. With large coil-currents, path 13 becomes saturated and an increase of flux in the gap occurs, so that the coil is moved towards the gap and contact 18 energizes a maximum-current indicator R. Light springs 15<11> centre the coil.
GB28276/36A 1935-10-17 1936-10-17 Improvements in and relating to electromagnetic control devices for circuit interrupters and switches Expired GB479621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45417A US2085549A (en) 1935-10-17 1935-10-17 Electric control device

Publications (1)

Publication Number Publication Date
GB479621A true GB479621A (en) 1938-02-09

Family

ID=21937763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28276/36A Expired GB479621A (en) 1935-10-17 1936-10-17 Improvements in and relating to electromagnetic control devices for circuit interrupters and switches

Country Status (5)

Country Link
US (1) US2085549A (en)
BE (1) BE417961A (en)
DE (1) DE662071C (en)
FR (1) FR811881A (en)
GB (1) GB479621A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB765127A (en) * 1954-10-01 1957-01-02 English Electric Co Ltd Improvements in and relating to electromagnetic relays
US3022400A (en) * 1957-06-27 1962-02-20 Ahlefeldt Rolf S Von Two-way solenoid

Also Published As

Publication number Publication date
FR811881A (en) 1937-04-24
US2085549A (en) 1937-06-29
BE417961A (en)
DE662071C (en) 1938-07-04

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