GB484421A - Improvements in or relating to protection relays for electrical distribution networks - Google Patents

Improvements in or relating to protection relays for electrical distribution networks

Info

Publication number
GB484421A
GB484421A GB34210/36A GB3421036A GB484421A GB 484421 A GB484421 A GB 484421A GB 34210/36 A GB34210/36 A GB 34210/36A GB 3421036 A GB3421036 A GB 3421036A GB 484421 A GB484421 A GB 484421A
Authority
GB
United Kingdom
Prior art keywords
relay
time
relays
impedance
setting
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
GB34210/36A
Other languages
English (en)
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Publication of GB484421A publication Critical patent/GB484421A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/04—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes
    • H03G9/06—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes for gain control and tone control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
GB34210/36A 1935-12-13 1936-12-12 Improvements in or relating to protection relays for electrical distribution networks Expired GB484421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR799279T 1935-12-13

Publications (1)

Publication Number Publication Date
GB484421A true GB484421A (en) 1938-05-05

Family

ID=9236694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34210/36A Expired GB484421A (en) 1935-12-13 1936-12-12 Improvements in or relating to protection relays for electrical distribution networks

Country Status (4)

Country Link
BE (1) BE418906A (sk)
FR (1) FR799279A (sk)
GB (1) GB484421A (sk)
NL (1) NL45525C (sk)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1570491A (en) * 1975-11-14 1980-07-02 Gen Electric Co Ltd Protective relay arrangements

Also Published As

Publication number Publication date
BE418906A (sk)
NL45525C (sk)
FR799279A (fr) 1936-06-10

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