GB1100881A - Electrical protective relays - Google Patents

Electrical protective relays

Info

Publication number
GB1100881A
GB1100881A GB48647/63A GB4864763A GB1100881A GB 1100881 A GB1100881 A GB 1100881A GB 48647/63 A GB48647/63 A GB 48647/63A GB 4864763 A GB4864763 A GB 4864763A GB 1100881 A GB1100881 A GB 1100881A
Authority
GB
United Kingdom
Prior art keywords
voltage
relay
energized
dec
winding
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
GB48647/63A
Inventor
Hans Hoel
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
Priority to DENDAT1250916D priority Critical patent/DE1250916B/de
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB48647/63A priority patent/GB1100881A/en
Priority to US415736A priority patent/US3325685A/en
Priority to FR998145A priority patent/FR1416989A/en
Publication of GB1100881A publication Critical patent/GB1100881A/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
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2445—Electromagnetic mechanisms using a reed switch
    • 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
    • H02H3/02—Details
    • 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
    • H02H3/08—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 excess current
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

1,100,881. Magnetic reed relays. ENGLISH ELECTRIC CO. Ltd. 9 Dec., 1964 [10 Dec., 1963 (2)], Nos. 48647/63 and 48648/63. Heading H1N. [Also in Division H2] A protective relay has a winding 20 energized in an operating sense in accordance with the current in a protected circuit and a winding 19 energized in a restraining sense in accordance with the voltage of the protected circuit. A zener diode 30, or equivalent device, prevents the application of the voltage restraining signal when the voltage lies below a predetermined low value, and a zener diode 31 prevents the voltage restraining signal rising above a predetermined higher value. As shown, the relay may be of the magnetic reed type with contacts 10 within an envelope 11. The magnetic circuit of the relay includes a U-shaped member 14 having a part 15 of reduced cross-sectional area. A permanent magnet 16 is adjustable with respect to the part 15 and a metallic slug 18 may be provided.
GB48647/63A 1963-12-10 1963-12-10 Electrical protective relays Expired GB1100881A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DENDAT1250916D DE1250916B (en) 1963-12-10
GB48647/63A GB1100881A (en) 1963-12-10 1963-12-10 Electrical protective relays
US415736A US3325685A (en) 1963-12-10 1964-12-03 Electrical protective relays
FR998145A FR1416989A (en) 1963-12-10 1964-12-10 Electrical protection relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB48647/63A GB1100881A (en) 1963-12-10 1963-12-10 Electrical protective relays

Publications (1)

Publication Number Publication Date
GB1100881A true GB1100881A (en) 1968-01-24

Family

ID=10449392

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48647/63A Expired GB1100881A (en) 1963-12-10 1963-12-10 Electrical protective relays

Country Status (3)

Country Link
US (1) US3325685A (en)
DE (1) DE1250916B (en)
GB (1) GB1100881A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708723A (en) * 1971-03-05 1973-01-02 Airpax Electronics Low power magnetic circuit breaker
US3727106A (en) * 1972-06-09 1973-04-10 Zinsco Electric Prod Ground fault protection system
SE388713B (en) * 1974-08-22 1976-10-11 Mo Energeticheskij Institut TUNGRELE
US4811153A (en) * 1986-06-25 1989-03-07 Sakatos Michael J Circuit protector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969485A (en) * 1957-10-25 1961-01-24 Gen Electric Electric relay
US2920242A (en) * 1957-12-05 1960-01-05 Gen Electric Electric circuit
US3123742A (en) * 1959-06-08 1964-03-03 Moser

Also Published As

Publication number Publication date
DE1250916B (en) 1967-09-28
US3325685A (en) 1967-06-13

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