BR8005500A - Dispositivo de medicao de impedancia para a protecao de impedancia - Google Patents

Dispositivo de medicao de impedancia para a protecao de impedancia

Info

Publication number
BR8005500A
BR8005500A BR8005500A BR8005500A BR8005500A BR 8005500 A BR8005500 A BR 8005500A BR 8005500 A BR8005500 A BR 8005500A BR 8005500 A BR8005500 A BR 8005500A BR 8005500 A BR8005500 A BR 8005500A
Authority
BR
Brazil
Prior art keywords
impedance
protection
medication device
medication
impedance protection
Prior art date
Application number
BR8005500A
Other languages
English (en)
Inventor
Eriksson Leif
Original Assignee
Asea Ab
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 Asea Ab filed Critical Asea Ab
Publication of BR8005500A publication Critical patent/BR8005500A/pt

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
    • 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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measuring Phase Differences (AREA)
BR8005500A 1979-08-30 1980-08-29 Dispositivo de medicao de impedancia para a protecao de impedancia BR8005500A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7907212A SE418035B (sv) 1979-08-30 1979-08-30 Impedansmetande anordning vid impedansskydd

Publications (1)

Publication Number Publication Date
BR8005500A true BR8005500A (pt) 1981-03-10

Family

ID=20338720

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8005500A BR8005500A (pt) 1979-08-30 1980-08-29 Dispositivo de medicao de impedancia para a protecao de impedancia

Country Status (9)

Country Link
US (1) US4352136A (pt)
BR (1) BR8005500A (pt)
CA (1) CA1143008A (pt)
CH (1) CH662909A5 (pt)
DE (1) DE3031534C2 (pt)
FR (1) FR2464480A1 (pt)
GB (1) GB2064241B (pt)
SE (1) SE418035B (pt)
YU (1) YU214880A (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4617636A (en) * 1982-03-03 1986-10-14 National Research Development Corporation Protection of electrical power supply systems
FR2538122A1 (fr) * 1982-12-16 1984-06-22 Enertec Perfectionnement aux procedes et dispositifs de determination d'un parametre associe a une ligne electrique en defaut
EP0204978B1 (en) * 1985-05-21 1992-01-08 Fujitsu Limited Shutdown control means for an electric power supply
SE452534B (sv) * 1986-04-08 1987-11-30 Asea Ab Forfarande och anordning for reckviddsbegrensning och direktutlosning i samband med skydd av en kraftledning
US10509063B2 (en) * 2017-11-28 2019-12-17 Fluke Corporation Electrical signal measurement device using reference signal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE356407B (pt) * 1971-09-27 1973-05-21 Asea Ab
FR2203080B1 (pt) * 1972-10-17 1977-08-26 Ice
SE373239B (pt) * 1973-05-21 1975-01-27 Asea Ab
CH623963A5 (pt) * 1977-10-28 1981-06-30 Bbc Brown Boveri & Cie

Also Published As

Publication number Publication date
CH662909A5 (de) 1987-10-30
SE7907212L (sv) 1981-03-01
US4352136A (en) 1982-09-28
FR2464480B1 (pt) 1985-02-08
DE3031534A1 (de) 1981-03-26
GB2064241B (en) 1983-06-02
DE3031534C2 (de) 1984-10-11
YU214880A (en) 1983-10-31
SE418035B (sv) 1981-04-27
GB2064241A (en) 1981-06-10
FR2464480A1 (fr) 1981-03-06
CA1143008A (en) 1983-03-15

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Legal Events

Date Code Title Description
MK Patent expired

Effective date: 19950829