GB170915A - Improvements in balanced electrical relays - Google Patents

Improvements in balanced electrical relays

Info

Publication number
GB170915A
GB170915A GB2229620A GB2229620A GB170915A GB 170915 A GB170915 A GB 170915A GB 2229620 A GB2229620 A GB 2229620A GB 2229620 A GB2229620 A GB 2229620A GB 170915 A GB170915 A GB 170915A
Authority
GB
United Kingdom
Prior art keywords
fulcra
contacts
protective arrangements
electrical relays
balanced electrical
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
GB2229620A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2229620A priority Critical patent/GB170915A/en
Publication of GB170915A publication Critical patent/GB170915A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/14—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for differential operation of the relay

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

170,915. Railing, A. H., Garrard, C. C., and Wilson, W. July 27, 1920. Protective arrangements; electromagnetic and magnetic switches; contacts.-Balanced electric relays, for use in conjunction with protective arrangements of the type described in Specification 105,356, are constructed with solenoids E, E<1> mounted in a frame B, their plungers D, D, being hung from an arm A, supported on two fulcra C, C<1>. These fulcra are so disposed that the out-of-balance current must exceed a predetermined proportion of the total current passed before the energization of the coil affected is sufficiently strong to rock the bar A on its adjacent pivot, thereby completing a tripping-circuit through contacts F, G or F1, G1.
GB2229620A 1920-07-27 1920-07-27 Improvements in balanced electrical relays Expired GB170915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2229620A GB170915A (en) 1920-07-27 1920-07-27 Improvements in balanced electrical relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2229620A GB170915A (en) 1920-07-27 1920-07-27 Improvements in balanced electrical relays

Publications (1)

Publication Number Publication Date
GB170915A true GB170915A (en) 1921-10-27

Family

ID=10177070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2229620A Expired GB170915A (en) 1920-07-27 1920-07-27 Improvements in balanced electrical relays

Country Status (1)

Country Link
GB (1) GB170915A (en)

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