ZA763449B - Protection circuits - Google Patents

Protection circuits

Info

Publication number
ZA763449B
ZA763449B ZA763449A ZA763449A ZA763449B ZA 763449 B ZA763449 B ZA 763449B ZA 763449 A ZA763449 A ZA 763449A ZA 763449 A ZA763449 A ZA 763449A ZA 763449 B ZA763449 B ZA 763449B
Authority
ZA
South Africa
Prior art keywords
protection circuits
circuits
protection
Prior art date
Application number
ZA763449A
Other languages
English (en)
Inventor
T Domanski
Original Assignee
Charbonnages Ste Chimique
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 Charbonnages Ste Chimique filed Critical Charbonnages Ste Chimique
Publication of ZA763449B publication Critical patent/ZA763449B/xx

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
    • H02H3/12—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 underload or no-load
    • H02H3/13—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 underload or no-load for multiphase applications, e.g. phase interruption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16509—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using electromagnetic relays, e.g. reed relay
    • 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
    • H02H3/027—Details with automatic disconnection after a predetermined time

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Protection Of Generators And Motors (AREA)
ZA763449A 1975-06-23 1976-06-10 Protection circuits ZA763449B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7519591A FR2315697A1 (fr) 1975-06-23 1975-06-23 Procede de detection d'un courant alternatif

Publications (1)

Publication Number Publication Date
ZA763449B true ZA763449B (en) 1977-05-25

Family

ID=9156877

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA763449A ZA763449B (en) 1975-06-23 1976-06-10 Protection circuits

Country Status (3)

Country Link
BE (1) BE843232A (fr)
FR (1) FR2315697A1 (fr)
ZA (1) ZA763449B (fr)

Also Published As

Publication number Publication date
FR2315697A1 (fr) 1977-01-21
BE843232A (fr) 1976-10-18
FR2315697B1 (fr) 1979-10-19

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