GB866531A - Improvements in and relating to electromagnetic protective relays - Google Patents

Improvements in and relating to electromagnetic protective relays

Info

Publication number
GB866531A
GB866531A GB3238656A GB3238656A GB866531A GB 866531 A GB866531 A GB 866531A GB 3238656 A GB3238656 A GB 3238656A GB 3238656 A GB3238656 A GB 3238656A GB 866531 A GB866531 A GB 866531A
Authority
GB
United Kingdom
Prior art keywords
coil
relay
core
coils
oct
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
GB3238656A
Inventor
Albert Russell Van C Warringto
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB3238656A priority Critical patent/GB866531A/en
Publication of GB866531A publication Critical patent/GB866531A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H53/00—Relays using the dynamo-electric effect, i.e. relays in which contacts are opened or closed due to relative movement of current-carrying conductor and magnetic field caused by force of interaction between them
    • H01H53/10—Induction relays, i.e. relays in which the interaction is between a magnetic field and current induced thereby in a conductor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/40—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current
    • H02H3/407—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current using induction relays

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

866,531. Induction relays. ENGLISH ELECTRIC CO. Ltd. Oct. 23, 1957 [Oct. 24, 1956], No. 32386/56. Addition to 841,866. Class 38 (5). An induction-disc relay has an operating winding 24 which surrounds a two-part control winding 25 embracing a split core 15. The flux produced by the coil 24 follows the path shown in broken lines and that produced by the coil 25 circulates in the split part of the core as shown by the double arrow. The coil 25 is arranged so as to normally saturate the split part of the core so as to give the relay an impedance characteristic when the respective coils 24, 25 are connected to current and voltage transformers 13, 14. The relay may have its coils fed by current transformers in parallel feeders or at each end of the same feeder, or the operating coil 24 may be fed from the A.C. side, and the control coils 25 by the D.C. side, of a rectifier so as to provide differential current protection.
GB3238656A 1956-10-24 1956-10-24 Improvements in and relating to electromagnetic protective relays Expired GB866531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3238656A GB866531A (en) 1956-10-24 1956-10-24 Improvements in and relating to electromagnetic protective relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3238656A GB866531A (en) 1956-10-24 1956-10-24 Improvements in and relating to electromagnetic protective relays

Publications (1)

Publication Number Publication Date
GB866531A true GB866531A (en) 1961-04-26

Family

ID=10337802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3238656A Expired GB866531A (en) 1956-10-24 1956-10-24 Improvements in and relating to electromagnetic protective relays

Country Status (1)

Country Link
GB (1) GB866531A (en)

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